薄弱层

初始弹性侧移刚度比对框支配筋砌块砌体剪力墙结构的薄弱层位置、弹塑性变形性能和破坏形态的影响较大。

The value of lateral stiffness ratio has significant influence on the place of weak story , elastic-plastic distortion and failure characteristic .

结果表明：该结构未出现明显的薄弱层，能够满足规范的抗震设防要求，阻尼器发挥了一定的消能减震效果，进一步提高了结构的抗震性能。

The analysis and test results show that the structure has no obvious weak story and can meet the code requirements for energy dissipation structures , and the dampers play important role in energy dissipation and improve seismic performance of the structure further .

在ANSYS的屈曲分析中对薄弱层进行稳定验算，得出薄弱层未失稳。

Buckling in the ANSYS analysis of the weak layer stability checking , did not come to weak layer instability .

这在一定程度上使界面层弱谷变浅，Hy-d曲线变平，界面及其最薄弱层得到强化。

As a result the weak valley of the interfacial layer becomes shallow . the H_ ? - d curve approaches to flatness , and the weakest interfacial layers will be strengthened .

RC组合结构属竖向不规则结构，容易因刚度和强度的突变形成薄弱层。

SRC-RC composite structure is a kind of vertical irregular structure , so it may include the weak floor due to the discontinuity of strength and rigidity .

底层薄弱层框架&填充墙抗震性能研究

Study on Seismic Performance of Infilled Frame of Underlying Weak Layer

框架结构薄弱层分析

Analysis of Strength of the Weakness & layer of Framed Structure

带底部薄弱层住宅结构抗震设计

Seismic design of an apartment building with bottom weak story

从时程曲线中分析得到的薄弱层与极值响应图得到的薄弱层的结果基本一致，可以用这两种方法中的任一种来判断薄弱层。

We can judge weak-stories from time history curve or extreme response figures .

地震累积破坏对结构薄弱层位置的影响

An Effect by the Seismic Cumulative Damage on the Position of Weak-layer of Structures

应用超声波法探测边坡薄弱层

Ultrasonic Method for Detecting Weak Plane in Slope

因此，施工阶段必须考虑到基础刚度与模板支撑薄弱层。

Consequently , foundation stiffness and insufficient level shores should be taken into account during construction .

掉层建筑结构的薄弱层一般位于坎上第一层。

The weak storey of step-terrace structure is usually on the first floor above the scarp . 4 .

由于填充墙刚度效应的存在，填充墙框架结构在一些情况下可能产生薄弱层效应。

The stiffness effect of the infill walls can make the soft storey effect occur in the infilled frames .

斜柱式转换结构转换层侧向刚度较大，不易使转换层形成结构薄弱层；

Lateral rigidity of inclined column-shaped transfer stories is large , making it difficult to engender structure weakness stories .

通过对河滩相软土地基变形规律的分析，提出了施工控制的最薄弱层法。

A method of construction control to the weakest layer is brought forward by the data analysis and conclusion about basic deformation principles .

施工模板支撑薄弱层导致其上楼板承担的施工荷载增大，其下楼板承担的施工荷载减小，变化幅度约4.3%。

The insufficient level shores will increase loads on the slab and reduce the loads under the slab by as much as 4.3 % .

通过对这些数据的分析，结合河滩相软土特点，提出软土地基路堤施工控制的最薄弱层法和预压期控制方法。

By analyzing these data and the characteristic of alluvial flat soft clay , the methods that control embankment construction and precompression are brought forward .

高阶振型对结构的影响比较明显，薄弱层出现在结构的上部。

The influence of the high mode of vibration is quite obvious to the structure , and the weak spot is at upside of the structure .

同时，由于加强层的设置将会引起结构刚度和内力的突变，并易形成薄弱层。

In the meantime , the setup of strengthened story will cause sudden change of structural rigidity and internal force and form of a weak layer .

试验分析还表明，消能支撑框架模型结构的破坏主要集中在底层，即底层是模型结构的薄弱层。

In addition , the analysis indicates the damage of the frame model with energy-dissipation braces concentrates on the ground floor , namely the weak floor .

试验分别在五层钢框架模型的第一、三和五层薄弱层设置三种耗能阻尼器支撑，进行了多遇地震和罕遇地震的抗震试验。

The model added the three kinds of EDD-bracing system on the 1st , the 2nd and the top weak floor , experiences simulative minute earthquake and disastrous earthquake .

本文最后进行了框架薄弱层设置耗能阻尼器支撑的地震模拟振动台试验和针对振动台试验的有限元分析。

Finally , The vibrating table test and the relevant finite element analysis about steel frame model , whose weak layers are equipped with EDD-bracing system , are performed in this paper .

在结构设计过程中，结构最大弹塑性位移响应是评估结构在大震作用下结构性能的主要指标，较好的把握结构的薄弱层最大弹塑性层间位移具有重要的工程意义。

The maximum plastic-elastic displacement is the main aspect of structural performance evaluation in the structure design . To grasp the max plastic-elastic storey drift of structures has great significance for the engineering .

目前，我国建筑防倒塌验算是通过对罕遇地震作用下对薄弱层的层间弹塑性位移的验算来实现的。

At present , the checking computation of collapse preventing performance of architecture is realized by calculating the plastic displacement between layers of the unsubstantial layer under the action of the rarely met earthquake .

结果表明，结构在地震中的反应和破坏主要集中在薄弱层，尤其是薄弱层的柱子破坏非常严重，极易失效倒塌。

The results show that the reaction and damage of the structure under seism mainly concentrated in soft storey . Especially the pillars of the soft storey , very serious damage and failure found extremely easy .

设计合理的填充墙可充当结构的第一道抗震防线，提高结构的抗震能力；设计不合理的填充墙，可能会造成如结构薄弱层破坏，扭转破坏等不利现象。

Reasonable designed infilled walls can serve as the first seismic line of a structure , improving the seismic capacity ; unreasonable designed filler walls may cause negative phenomenon such as structural weak layer destruction , torsion failure .

通过对地震响应的对比分析可知：防屈曲支撑可以对局部收进形成薄弱层的位置进行加强，减弱由于结构刚度突变而对结构产生的不利影响。

Through the contrast of seismic response analysis , can prevent buckling support local in form to strengthen the position of the weak layer , weakened due to structural stiffness mutation and the adverse influence on the structure .

为便于现场施工组织和安全检验，针对多（高）层建筑混凝土结构施工阶段，建立了一个包含了基础刚度与施工模板支撑薄弱层参数的统一模型。

A unified model was developed to organize construction conveniently and check safety of the structures in site for reinforced concrete structures of multi-story or high-rise buildings . The model accounted for stiffness of the foundation and the insufficient level shores .

不对称结构抗震性能相对于对称结构来说较差，结构的底层是薄弱层，多维地震对角柱影响显著，这些应在抗震设计中加强注意；以及两点关于改善结构抗震机制的建议。

The earthquake performance of asymmetric structure is worse than symmetric one , the bottom of structure is weak layer , corner column is more affected in multidimensional seismic actions , and these parts should be taken more attention in design .