紧邻立交桥的连续墙受力分析和安全性评价

doi:10.11835/j.issn.1674-4764.2016.03.002

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紧邻立交桥的连续墙受力分析和安全性评价
DOI:
                        10.11835/j.issn.1674-4764.2016.03.002
                    
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作者:
                        陈江陈江
中南大学 土木工程学院, 长沙 410075
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阳军生阳军生
中南大学 土木工程学院, 长沙 410075
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陈思明陈思明
中铁建设投资集团有限公司, 广东 深圳 518055
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张学民张学民
中南大学 土木工程学院, 长沙 410075
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欧雪峰欧雪峰
中南大学 土木工程学院, 长沙 410075
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基金项目:国家自然科学基金(51378505、50808178);中国中铁股份有限公司科技开发计划(2012-19)

Force analysis and security assessment of diaphragm walls adjacent overpasses

Author:

Chen Jiang
Chen Jiang
School of Civil Engineering, Central South University, Changsha 410075, P. R. China
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Yang Junsheng
Yang Junsheng
School of Civil Engineering, Central South University, Changsha 410075, P. R. China
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Chen Siming
Chen Siming
Construction & Investment Group Co. Ltd., Shenzhen 518055, Guangdong, P. R. China
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Zhang Xuemin
Zhang Xuemin
School of Civil Engineering, Central South University, Changsha 410075, P. R. China
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Ou Xuefeng
Ou Xuefeng
School of Civil Engineering, Central South University, Changsha 410075, P. R. China
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参考文献 [15]

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摘要:

以深圳地铁车公庙交通枢纽7 & 9号线车站深基坑工程为研究背景,选取典型的监测断面,埋置混凝土应变计,进行地下连续墙的内力测试,分析了连续墙在深基坑开挖过程中的内力变化规律,并对连续墙的安全性进行了评价,得到以下结论:随着基坑开挖深度的增加,地下连续墙的内力变化越发明显,基坑负二层和负三层开挖对连续墙的内力变化影响较大,应重点关注和监测;根据现场测试数据得到两侧地下连续墙的内力变化并非完全一致,主要受到紧邻基坑开挖和周边建筑物的影响;最后计算得到地下连续墙处于安全状态。

关键词:地下连续墙;现场测试;弯矩;安全系数

Abstract:

A typical measurement-section was selected, and concrete strain meters were embedded to make measurement for diaphragm walls on the construction of Station of Metro Line 7&9 of Chegongmiao Station of Shenzhen Metro. The internal force change of diaphragm walls was discussed, and the reliability of diaphragm walls was evaluated. Results showed that with the increasing of the excavation depth of foundation pits, the variation of stresses of diaphragm walls was observable. According to the strain data from field measurement, safety factors of diaphragm walls were calculated, which turned out to meet national code. Meanwhile, it can be concluded that diaphragm walls were in the safe status. In the end, the variation relationship of their internal force, which would provide some references for the design and construction of similar projects in the future, was obtained.

Key words:diaphragm wall;field measurement;bending moments;safety factor

参考文献

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引用本文

陈江,阳军生,陈思明,张学民,欧雪峰.紧邻立交桥的连续墙受力分析和安全性评价[J].土木与环境工程学报（中英文）,2016,38(3):12-17. Chen Jiang, Yang Junsheng, Chen Siming, Zhang Xuemin, Ou Xuefeng. Force analysis and security assessment of diaphragm walls adjacent overpasses[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2016,38(3):12-17.10.11835/j. issn.1674-4764.2016.03.002

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收稿日期:2016-03-03
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