杨宾;林从谋;殷榕鹏;温智捷;张帆;
YANG Bin;LIN Cong-mou;YIN Rong-peng;WEN Zhi-jie;ZHANG Fan;Research Institute of Geotechnical Engineering,Huaqiao University;Fujian Tunnel and Urban Underground Space Engineering Technology Research Center;

• 1:华侨大学岩土工程研究所
• 2:福建省隧道与城市地下空间工程技术研究中心

摘要(Abstract)：

为确保建筑物拆除爆破时地下各类管线的安全,以漳州东立交桥整体爆破拆除工程为背景,将桥体爆破拆除时的塌落对土体的作用过程类比为强夯,基于强夯理论提出建筑物塌落冲击对土体的影响深度以及土体沉降值的计算方法。采用PLAXIS和ANSYS/LSDYNA分别对漳州市东立交桥逐跨塌落进行数值模拟,根据塑性区的范围和土体的位移大小判断影响深度。最后将数值模拟和现场实测数据与建立方法的计算结果进行对比分析,证明计算方法的可行性。研究成果可以为类似工程及相关研究提供参考。
In order to ensure the safety of all kinds of underground pipelines in the building blasting demolition,the blasting demolition project of Zhangzhou east overpass was taken as the background.The collapse effect of the bridge demolished by blasting was analogous to dynamic compaction.Based on the theory of dynamic compaction,the calculation formula of the soil influence depth and soil settlement value was put forward.PLAXIS and ANSYS LS-DYNA were used to numerically simulate the collapse of Zhangzhou east overpass span by span.According to the range of plastic zone and the magnitude displacement of the soil,the effect depth was judged.Finally,the numerical simulation,the field test data and the result of calculation methods were compared and analyzed.The method was proved feasible.It could provide a reference for similar projects.

关键词(KeyWords)： 爆破拆除;塌落冲击;土体变形;计算方法;影响深度;桥体拆除
Blasting demolition;Collapse impact;Soil deformation;Calculation method;Influence depth;Bridge demolition

Abstract:

Keywords:

基金项目(Foundation): 福建省自然科学基金计划资助项目(2014J01197);; 华侨大学研究生科研创新能力培育计划资助项目

作者(Authors): 杨宾;林从谋;殷榕鹏;温智捷;张帆;
YANG Bin;LIN Cong-mou;YIN Rong-peng;WEN Zhi-jie;ZHANG Fan;Research Institute of Geotechnical Engineering,Huaqiao University;Fujian Tunnel and Urban Underground Space Engineering Technology Research Center;

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