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梁板式支撑体系深基坑边桁架板-对撑板刚度比研究

Research on stiffness ration of trussplatetobraceplate in deep beam-slab braced foundation pit
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摘要 梁板式支撑结构深基坑设计中,引入桁架板-支撑板刚度比概念来分析支护结构不同轴向受压抵抗能力与侧向受弯抵抗能力组合下的受力变形状态。采用MIDAS GTS对某工程梁板式支撑结构计算分析,得出在含桁架(板)构件的梁板式支撑体系进行设计时,可先基于刚度比0.25~2.5初定支撑结构尺寸,后根据工程条件、经济成本来确定支撑结构尺寸。 In the design of deep foundation pit of beam slab braced foundation pit,the stiffness ratio of truss plate to support plate is introduced to analyze the stress and deformation state of supporting structure under different combination of axial compression resistance and lateral bending resistance.MIDAS GTS is used to calculate a certain beam slab support structure.It was shown that the size of the support structure can be initially determined based on the stiffness ratio of 0.25~2.5 in the design of foundation pit,then to be accurately determined based on engineering conditions and economic costs.
作者 常学宁 罗俊兴 CHANG Xuening;LUO Junxing(CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China)
出处 《建筑结构》 北大核心 2023年第S02期2554-2557,共4页 Building Structure
关键词 梁板式支撑 刚度比 弯矩 水平位移 beam-slab bracing system stiffness ration bending moment horizontal displacement
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