拉-剪状态下锚固节理剪切强度与破坏模式分析
作者:
何栋梁;杨伟军;林杭;曹日红
期刊:
公路交通科技 ,2019年36(4):95-101 ISSN:1002-0268
作者机构:
长沙理工大学 土木工程学院, 湖南 长沙 410114;湖南城市学院 土木工程学院, 湖南 益阳 413000;长沙理工大学 土木工程学院,湖南 长沙,410114;中南大学 资源与安全工程学院,湖南 长沙,410083;[何栋梁; 杨伟军] 长沙理工大学
关键词:
隧道工程;直剪;锚固节理;细观特征;抗剪强度
摘要:
为了分析拉-剪加载下锚固节理的剪切强度与破坏模式,基于颗粒流数值模拟方法,建立不同锚固角度的锚固节理模型(锚固角度分别为15°,30°,45°,60°,75°,90°) 。拉剪速率比设置为1∶ 1,结合数值模拟结果,从细观角度分析不同锚固角度下的岩石节理面破坏模式与锚杆变形状态。结果表明,锚固角度对模型的峰值剪切强度、剪切曲线以及黏结力分布趋势均存在较为明显的影响: (1)锚固角度对节理拉-剪作用下的破坏模式存在较大影响,随着锚固角度的不断变化,试样的破坏模式也存在较大的区别。当锚固角度较大时锚杆与节理交界处存在明显的核状破坏,在加载后期取决于拉伸裂纹的扩展。而锚固角度较小时,锚固节理的破坏主要是拉伸裂纹的扩展所致,锚杆与节理面接触位置并未出现明显的破坏现象。(2)当锚固角度较大时(60° ~ 90°) ,锚杆尖端并无明显的拉伸应力分布,且锚杆内部拉伸应力集中于锚杆中段。然而,当锚固角度较小时(15° ~ 45°) ,锚杆大部分区域均存在明显拉伸应力集中现象,且锚杆尖端位置岩体内部也出现了明显的拉伸应力。(3)峰值剪切应力随着锚固角度的增大呈现出先增大后减小的趋势,锚固角度为0°时峰值剪切应力处于最小值,锚固角为75°时峰值剪切应力达到最大值。
语种:
中文
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陶粒混凝土梁裂缝及延性的试验研究
作者:
于周平;杨伟军;詹培敏
期刊:
硅酸盐通报 ,2019年38(7):1991-1996 ISSN:1001-1625
作者机构:
长沙理工大学土木工程学院,长沙410076;绍兴文理学院元培学院,绍兴312000;长沙理工大学土木工程学院,长沙,410076;绍兴文理学院土木工程学院,绍兴,312000;[詹培敏] 绍兴文理学院
关键词:
陶粒混凝土梁;挠度;延性;裂缝
摘要:
通过对5根陶粒混凝土梁和1根普通混凝土梁进行受弯试验,研究陶粒的强度和粒径对混凝土梁裂缝和延性的影响。试验结果表明:陶粒混凝土梁的耗能性能和延性均优于普通混凝土梁,强度和刚度较普通混凝土梁略有降低。在陶粒粒径相同的情况下,陶粒强度越高,陶粒混凝土梁的裂缝数量少而稀,而耗能性能和延性减弱。随着陶粒粒径增大,陶粒混凝土梁的裂缝数量多而密,耗能性能和延性增强。
语种:
中文
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砂土地基钻孔灌注桩轴心温度场及应变试验研究
作者:
陈维超;杨伟军;任立;沈兆普
期刊:
中外公路 ,2018年38(5):151-157 ISSN:1671-2579
作者机构:
长沙理工大学土木工程学院,湖南长沙410004;湖南建工集团有限公司;长沙理工大学土木工程学院,湖南长沙,410004;[沈兆普] 中国路桥工程有限责任公司;[任立; 杨伟军; 陈维超] 长沙理工大学
关键词:
桥梁工程;砂土地基;温度场;应变;桩基;监测
摘要:
通过加蓬Ogooué特大桥砂土地基钻孔灌注桩温度及应变试验,研究了桩基轴心温度场及应变分布与发展规律.结果表明:桩基轴心不同深度的轴向与径向水化热温度包括诱导、快速升温、缓慢升温、迅速降温和缓慢降温5个发展阶段;混凝土初凝至终凝阶段温升速率最大,终凝后8~12 h达到温度峰值,进入缓慢降温阶段后桩基轴心温度最终与环境温度接近;水化热对桩基轴向方位温度场影响较小,最大温差1.1℃;建立了温升与温降阶段温度与龄期关系的Boltzmann及指数式模型,计算结果与试验结果吻合较好.桩基轴心同一位置达到应变峰值的时间相对温度峰值具有滞后性,且轴向方位的应变峰值滞后时间随深度增加而增加,轴向最大应变值在相同的水化热温度作用下随深度增加而减少,但轴向残余应变随深度增加而增大.
语种:
中文
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Effect of Thickness of Gravel Base and Asphalt Pavement on Road Deformation
作者:
He, Dongliang* ;Yang, Weijun
期刊:
Advances in Civil Engineering ,2018年2018:1-7 ISSN:1687-8086
通讯作者:
He, Dongliang
作者机构:
[He, Dongliang; Yang, Weijun] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;[He, Dongliang] Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构:
[He, Dongliang] C;[He, Dongliang] H;Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
摘要:
This study uses a test section of a highway, a study object, to explore the effect of thickness of the gravel base and asphalt layer on the vertical deformation of the road surface. The thickness of the asphalt layer and graded gravel base is changed. The nonlinear description equation of the relationship between the thickness (h1) of the asphalt layer and the vertical deformation (d1) is established: d1=a4(1 b4 h1). The thickness of the asphalt pavement is then determined to reduce vertical deformation. Numerical calculation shows that the maximum vertical deformation of the foundation is within 8 mm, which is less than the 15 mm maximum vertical deformation of the embankment. This level meets the design requirements. © 2018 Dongliang He and Weijun Yang.
语种:
英文
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Surface Morphology of Structural Plane and Effects of the Shear Strength Parameters
作者:
He, Dongliang* ;Yang, Weijun;Cheng, Yanhui
期刊:
Advances in Civil Engineering ,2018年2018 ISSN:1687-8086
通讯作者:
He, Dongliang
作者机构:
[He, Dongliang; Yang, Weijun; Cheng, Yanhui] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;[He, Dongliang; Cheng, Yanhui] Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构:
[He, Dongliang] C;[He, Dongliang] H;Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
摘要:
The surface morphology of a discontinuous structural plane in a natural rock mass is irregular. In studies on the shear strength of discontinuous structural planes, Barton introduced the joint roughness coefficient (JRC) to describe and calibrate the morphological characteristics of a rough structural plane. To describe Barton's typical rough profile model, researchers commonly conduct a comparison based on a standard curve. This approach does not guarantee graphic precision. With subjective comparison reference drawing, the size and angle of a structural plane cannot be quantitatively controlled, and small bumps cannot be described. When the influence of the roughness coefficient of a rock surface is discussed, errors are caused by comparing Barton's typical roughness profile model and a general structural surface model. This paper proposed a new method to simulate Barton's typical structural surface. A numerical model of a complex structural plane is built automatically. The effects of cohesion and internal friction angle on the shear strength of the structural plane are discussed by changing the value of the shear strength parameters. © 2018 Dongliang He et al.
语种:
英文
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水位与进尺及支护时机对富水隧道稳定性的影响
作者:
黄戡;杨伟军;安永林;胡文轩;李依;...
期刊:
中南大学学报(自然科学版) ,2018年49(11):2843-2851 ISSN:1672-7207
通讯作者:
Huang, K.
作者机构:
长沙理工大学 土木工程学院,湖南 长沙,410114;湖南科技大学 土木工程学院,湖南 湘潭,411201;[傅蕾; 黄戡; 李依; 邱朗; 杨伟军; 周经伟] 长沙理工大学;[安永林; 胡文轩] 湖南科技大学
通讯机构:
School of Civil Engineering, Changsha University of Science & Technology, Changsha, China
关键词:
富水隧道;水位线;支护;开挖方法
摘要:
以实际富水隧道为参考背景,通过不同水位、支护、开挖条件建立三维数值模拟,分析富水隧道在不同条件下的稳定性及围岩变形。研究结果表明:地表沉降和开挖面的水平位移均随着水位的上升而增加,并且水位越接近地表,地表沉降和开挖面的水平位移增加得越明显;支护在滞后2.5 m时,相应的拱顶沉降和塑性区与及时支护条件下相差不大,但在支护滞后5.0 m时,拱顶沉降和塑性区域显著增大,并且塑性区向上部围岩蔓延;随着进尺增加,围岩位移与塑性应变增大;随着渗流时间增加,掌子面前方的孔隙水压力逐渐减少,逐渐呈现漏斗状分布。
语种:
中文
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Influence of Structural Plane Microscopic Parameters on Direct Shear Strength
作者:
Cheng, Yanhui* ;Yang, Weijun;He, Dongliang
期刊:
Advances in Civil Engineering ,2018年2018:1-7 ISSN:1687-8086
通讯作者:
Cheng, Yanhui
作者机构:
[He, Dongliang; Cheng, Yanhui; Yang, Weijun] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;[He, Dongliang; Cheng, Yanhui] Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构:
[Cheng, Yanhui] C;[Cheng, Yanhui] H;Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
摘要:
Structural plane is a key factor in controlling the stability of rock mass engineering. To study the influence of structural plane microscopic parameters on direct shear strength, this paper established the direct shear mechanical model of the structural plane by using the discrete element code PFC2D. From the mesoscopic perspective, the research on the direct shear test for structural plane has been conducted. The bonding strength and friction coefficient of the structural plane are investigated, and the effect of mesoscopic parameters on the shear mechanical behavior of the structural plane has been analyzed. The results show that the internal friction angle φ of the structural plane decreases with the increase of particle contact stiffness ratio. However, the change range of cohesion is small. The internal friction angle decreases first and then increases with the increase of parallel bond stiffness ratio. The influence of particle contact modulus EC on cohesion c is relatively small. The internal friction angle obtained by the direct shear test is larger than that obtained by the triaxial compression test. Parallel bond elastic modulus has a stronger impact on friction angle φ than that on cohesion c. Under the same normal stress conditions, the shear strength of the specimens increases with particle size. The shear strength of the specimen gradually decreases with the increase of the particle size ratio. © 2018 Yanhui Cheng et al.
语种:
英文
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Impact of glass plates rigidity on load sharing in an aerogel composited glass unit
作者:
He, Yunzhen* ;Yang, Weijun
期刊:
IOP Conference Series: Materials Science and Engineering ,2018年322:1-5 ISSN:1757-8981
通讯作者:
He, Yunzhen
作者机构:
[He, Yunzhen; Yang, Weijun] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha, Hunan, Peoples R China.
通讯机构:
[He, Yunzhen] C;Changsha Univ Sci & Technol, Sch Civil Engn, Changsha, Hunan, Peoples R China.
会议名称:
The 1st International Symposium on Application of Materials Science and Energy Materials (SAMSE 2017)
会议时间:
2017-12-28
会议地点:
上海
会议主办单位:
[He, Yunzhen;Yang, Weijun] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha, Hunan, Peoples R China.
会议论文集名称:
The 1st International Symposium on Application of Materials Science and Energy Materials (SAMSE 2017) 论文集
摘要:
An aerogel composited glass unit consists of two glass sheets and an interlayer filled with aerogel granules. When it is subjected to a uniformly distributed load, part of the load is transferred to the leeward glass sheet through the interlayer. A numerical analysis method is employed to describe the effect of glass plates rigidity on load sharing of two glass plates and an experimental research is conducted to verify the validity of the numerical method. The experimental results suggested that the assumptions which were employed in the numerical method are valid when the difference of glass sheets rigidity is small, but it becomes inapplicable when the difference of glass sheets rigidity becomes much greater.
语种:
英文
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新型保温装饰一体化复合外墙体系研究
作者:
谢金;陈维超;杨伟军;李俊;代灏东
期刊:
湖南城市学院学报(自然科学版) ,2018年27(3):27-31 ISSN:1672-7304
作者机构:
湖南城市学院土木工程学院;[陈维超] 湖南省建筑工程集团总公司;长沙理工大学土木工程学院;[代灏东; 李俊] 湖南城市学院;[谢金; 杨伟军] 长沙理工大学
关键词:
保温装饰一体化;复合外墙体系;节能环保;泡沫混凝土
摘要:
随着人们对建筑节能环保要求的进一步提高,外墙保温体系使用年限的增加和结构的进一步改进是势在必行的研究课题.新型保温装饰一体化复合外墙体系为结构自保温外墙体系,保温年限能做到与结构使用年限相同,后续发展潜力大.本文探讨了新型保温装饰一体化复合外墙体系的组成;主要组成材料泡沫混凝土、轻钢龙骨、内侧水泥纤维板和外侧装饰板的选择;各个组成部分之间的构造连接方式以及将来需要进一步研究解决的关键问题.
语种:
中文
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Influence of Sample Size on the Shear Strength of Structural Plane
作者:
Cheng, Yanhui;Yang, Weijun;He, Dongliang
期刊:
Geotechnical and Geological Engineering ,2018年36(6):4029-4036 ISSN:0960-3182
通讯作者:
Cheng, Yanhui(chengyanhuihn@126.com)
作者机构:
[Cheng, Yanhui; Yang, Weijun; He, Dongliang] School of Civil Engineering, Changsha University of Science and Technology, Changsha;410114, China;School of Civil Engineering, Hunan University of City, Yiyang;Hunan;413000, China
通讯机构:
[Yanhui Cheng] S;School of Civil Engineering, Changsha University of Science and Technology, Changsha, China<&wdkj&>School of Civil Engineering, Hunan University of City, Yiyang, China
关键词:
Cohesion;Friction angle;Sample size;Shear strength;Structural plane
摘要:
The indoor experimental research of structural planes is often limited, whereas that of rock mass is practically extensive. Therefore, using a small structure to simulate the mechanical properties of reactions in a large structural plane is worthy of further study. Then studies for the effects of size on the shear strength of structural planes have important significance. This paper uses samples with a variety of sizes in the direct shear test of structure planes under varying values of normal stress. The results show that, the corresponding shear deformation is small and the shear capacity of the structural plane generally declines after reaching the peak shear stress. Cohesion c was small when the height of the specimen was not over half of its length. If the height is below half of the specimen length, then the internal friction angle increases. When the specimen size is small, the effect of cohesion was limited. The internal friction angle decreases with an increase in size. © 2018, Springer International Publishing AG, part of Springer Nature.
语种:
英文
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中英建筑技术法规对比及我国建筑结构规范的编制建议
作者:
梁建国;吴体;杨伟军;徐建;梁辉
期刊:
四川建筑科学研究 ,2018年44(1):62-69 ISSN:1008-1933
作者机构:
长沙理工大学土木工程学院;[吴体] 四川省建筑科学研究院;[徐建] 中国机械工业集团有限公司;[梁辉] 中元国际工程设计研究院;[梁建国; 杨伟军] 长沙理工大学
关键词:
建筑结构;标准;法规;对比
摘要:
通过对比中英现行建筑技术法规和技术标准,并对英国技术准则与中国强制性条文加以对比,提出了将类似于英国技术准则及其全文引用的技术标准合并为建筑结构规范的强制性标准方案,并建议采用基于性能的方法编写我国建筑结构规范,为我国建筑结构技术法规的制订提供参考.
语种:
中文
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Influence of Microscopic Parameters on the Stress-Strain Relation in Rocks
作者:
Cheng, Yanhui* ;Yang, Weijun
期刊:
Advances in Civil Engineering ,2018年2018 ISSN:1687-8086
通讯作者:
Cheng, Yanhui
作者机构:
[Cheng, Yanhui; Yang, Weijun] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;[Cheng, Yanhui] Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构:
[Cheng, Yanhui] C;[Cheng, Yanhui] H;Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China.;Hunan Univ City, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
摘要:
Macromaterial properties should correspond to the mesoscopic parameters simulated in practical engineering problems. Discrete element contains a variety of particle models and its corresponding mesoscopic parameters, and the one-to-one relationship between the mesoscopic parameters and macroscopic parameters is difficult to establish. This paper studies the influence of microscopical characteristic parameters, such as particle contact stiffness ratio, parallel bond stiffness ratio, particle contact modulus, and parallel bond elastic modulus, on the stress-strain relation in rocks, which shows that (1) The range of particle contact stiffness ratio kn/ks largely varies, but the stress-strain relation curve is relatively small. The particle contact stiffness has less influence on the elastic modulus of the simulated specimens than kn/ks. (2) Before the failure of the specimen, the axial strain corresponding to the peak compressive strength increases with the increase in the stiffness ratio kn/ks of the parallel bond. (3) The particle contact modulus Ec has a great influence on the elastic modulus of sandstone and is characterized by the increase in the particle contact modulus Ec, corresponding axial strain for the peak compressive strength decreases, and the slope of the stress-strain relationship curves before damage increases. (4) The elastic modulus of the parallel bond greatly influences the uniaxial compressive strength, and the relationship between them is proportional. © 2018 Yanhui Cheng and Weijun Yang.
语种:
英文
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Numerical Simulation Analysis of Block's Thermal Performance and Its Influencing Factors
作者:
Ma, Lihui* ;Wei, Liang;Yang, Weijun
期刊:
Systems Engineering Procedia ,2011年1:80-84 ISSN:2211-3819
通讯作者:
Ma, Lihui
作者机构:
[Wei, Liang; Ma, Lihui] Hebei United Univ, Sch Civil Engn, 46 Xinhua W Rd, Tangshan 063009, Peoples R China.;[Wei, Liang; Ma, Lihui] Earthquake Engn Res Ctr, Tangshan 063009, Peoples R China.;[Yang, Weijun] Changsha Univ Sci & Technol, Sch Bridge & Struct Engn, Changsha 410076, Peoples R China.
通讯机构:
[Ma, Lihui] H;Hebei United Univ, Sch Civil Engn, 46 Xinhua W Rd, Tangshan 063009, Peoples R China.
会议名称:
4th International Conference on Engineering and Risk Management (ERM)
会议时间:
OCT 28-30, 2011
会议地点:
Fields Inst, Toronto, CANADA
会议主办单位:
Fields Inst
会议论文集名称:
Systems Engineering Procedia
关键词:
Energy saving;Block;engineering design;Numerical analysis
摘要:
A different degree of energy saving effect was achieved by using different new block. In this paper, numerical analysis of the steady state behaviour about two-dimensional temperature field was carried out about three kinds of block. Then the effect on thermal performance by the pass and the kind of concrete was analyzed qualitatively and quantitatively. This paper will put forward some meaningful suggestions for the engineering design. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Organising Committee of The International Conference of Risk and Engineering Management.
语种:
英文
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模式识别技术在结构可靠度分析中的应用
作者:
蒋友宝;杨伟军;冯健
期刊:
工程力学 ,2008年25(8):53-57 ISSN:1000-4750
通讯作者:
Jiang, Y.-B.(jiangybseu@163.com)
作者机构:
[蒋友宝; 杨伟军] College of Bridge and Structural Engineering, Changsha University of Science and Technology, Changsha 410076, China;[冯健] College of Civil Engineering, Southeast University, Nanjing 210096, China
通讯机构:
[Jiang, Y.-B.] C;College of Bridge and Structural Engineering, Changsha University of Science and Technology, China
关键词:
结构工程;可靠度;模式识别;分类器;线性规划
摘要:
提出了一种重构功能函数的新方法。该方法采用模式识别中的最小错分样本数准则以实现对样本点较好的分类效果,从而得到功能函数的一个较好逼近。然后通过迭代算法修正每步得到的设计点以实现在真实设计点附近较高精度地逼近真实功能函数。它克服了一般响应面方法需用到功能函数值的不足。数值算例表明:该方法具有较高的精度且所需样本数量较少。
语种:
中文
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夏热冬冷地区适宜推广的保温体系研究
作者:
倪玉双;杨伟军;蒋耀华;张振浩
作者机构:
[倪玉双; 杨伟军; 蒋耀华; 张振浩] 长沙理工大学桥梁与结构学院;[倪玉双; 杨伟军; 蒋耀华; 张振浩] 中机国际工程设计研究院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
夏热冬冷;节能;导热系数;传热系数
摘要:
夏热冬冷地区外墙的传统做法为:240mm基层墙体加内、外分别为20mm厚的混合砂浆和水泥砂浆抹灰。这种构造不能满足当前的节能要求,故本文对夏热冬冷地区适宜推广的保温体系进行研究,提出了几种满足节能要求的体系。
语种:
中文
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模型房屋拟动力试验地震波的选取研究
作者:
杨春侠;施楚贤;杨伟军
作者机构:
[杨春侠; 施楚贤; 杨伟军] 湖南大学土木工程学院;[杨春侠; 施楚贤; 杨伟军] 长沙理工大学桥梁与结构学院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
混凝土多孔砖砌体结构;模型房屋;拟动力试验;地震波选取;频谱分析;小波分析
摘要:
针对混凝土多孔砖砌体结构模型房屋拟动力试验,本文首先对模型房屋进行模态分析,采用反应谱分析和频谱分析并结合模态分析结果选取进行模型房屋拟动力试验的地震波,并运用小波变换截取对结构地震响应最不利的地震波时段,可以为拟动力试验地震波的选取和截取提供理论依据。
语种:
中文
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混凝土多孔砖砌体结构拟动力试验模型房屋设计研究
作者:
杨春侠;施楚贤;杨伟军
作者机构:
[杨春侠; 施楚贤; 杨伟军] 湖南大学土木工程学院;[杨春侠; 施楚贤; 杨伟军] 长沙理工大学桥梁与结构学院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
混凝土多孔砖砌体;拟动力试验;模型房屋;模态分析
摘要:
本文通过对原型房屋、模型房屋的模态分析和弹性地震响应分析,对比研究不同模型与原型房屋动力特性的相似性,可以为抗震试验时模型房屋的设计提供参考。
语种:
中文
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热桥影响范围的研究
作者:
倪玉双;杨伟军;蒋耀华
作者机构:
[倪玉双; 杨伟军; 蒋耀华] 长沙理工大学桥梁与结构学院;[倪玉双; 杨伟军; 蒋耀华] 中机国际工程设计研究院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
热桥;导热系数;温度场;热流
摘要:
本文应用ANSYS有限元方法对同一种基层墙体不同热桥形式及不同基层墙体同一种热桥形式的热桥影响区域进行了数值模拟分析,得出了热桥的影响范围大约等于其宽度的结论,并建议在各种保温体系中,应先对热桥及其影响范围内的部分进行保温,然后对整个墙体进行保温。
语种:
中文
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混凝土多孔砖底部框架房屋抗震墙的简化计算
作者:
王岐芳;杨伟军
作者机构:
[王岐芳; 杨伟军] 湖南农业大学工学院;[王岐芳; 杨伟军] 长沙理工大学桥梁与结构学院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
混凝土多孔砖;抗震构造措施;抗震墙;抗侧刚度;刚度比
摘要:
本文通过理论推导并结合抗震设计规范,给出了底层抗震墙数量的简化计算方法,可用于指导底部房屋的初步设计。
语种:
中文
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底层框架——混凝土多孔砖房屋原型地震响应分析
作者:
杨伟军;莫振林;张海殿
作者机构:
[杨伟军; 莫振林; 张海殿] 长沙理工大学桥梁与结构学院
会议名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议
会议时间:
2007-12-07
会议地点:
长沙
会议论文集名称:
2007年全国砌体结构与墙体材料基本理论及其工程应用学术会议论文集
关键词:
砌体结构;有限元;非线性;模态分析
摘要:
本文针对底层框架—混凝土多孔砖抗震墙和底层框架—粘土砖抗震墙两种不同的结构,分别建立有限元模型,进行了模态分析及动力非线性有限元分析,并对两种模型计算结果进行相互比较,讨论该类混凝土多孔砖房屋的抗震性能。
语种:
中文
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