Experimental Study on Bending Moment of Double-Row Steel Pipe Piles in Foundation Excavation
Experimental Study on Bending Moment of Double-Row Steel Pipe Piles in Foundation Excavation
复制标题
基坑开挖双排钢管桩弯矩试验研究
DOI：
10.1155/2020/8882713
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发表时间：
2020-10
影响因子：
1.8
通讯作者：
Sun Shao-xia
中科院分区：
文献类型：
--
作者：
Zhang Ming-yi;Ma Jia-xiao;Yang Shu-juan;Wang Yong-hong;Bai Xiao-yu;Sun Shao-xia
双排钢管桩具有承载力高、抗弯刚度大、施工速度快等优点，在基坑支护中得到了广泛的应用，为评价应变计监测双排钢管桩在基坑开挖过程中应变的可行性，进行了现场试验。两个钢管桩用应变计测量，然后安装到钻孔中。首先介绍了应变片的安装方法。对基坑开挖过程中试桩的弯矩进行了分析。现场试验结果表明，应变片的成活率为100%，试验中采用的监测方法对双排钢管桩弯矩的测量是可行的。随着基坑开挖深度的增加，试验桩的弯矩均增大，且内侧桩的弯矩明显大于外侧桩。整个支护体系的弯矩分布符合常规的桩锚支护模式。试验结果可为双排钢管桩的设计和施工提供参考和依据。
Double-row steel pipe piles have been widely used in retaining and protection of foundation excavation because of the advantages of high bearing capacity, high flexural rigidity, fast construction speed, and so on. This study presents a field test to assess the feasibility of strain gauges in monitoring the strain of double-row steel pipe piles during foundation excavation. Two steel pipe piles were instrumented with strain gauges and then installed into the drilling holes. The installation method of strain gauges is introduced first. Then, the bending moment of the test piles during the foundation excavation was analyzed. The field test results indicate that the survival rate of strain gauges was 100%, and the monitoring method used in the test was feasible to measure the bending moment of double-row steel pipe piles. Moreover, with the increase in foundation excavation depth, the bending moment of the test piles all increased, and the bending moment of the inner pile was obviously higher than that of the outer pile. The bending moment distribution of the whole support system accords with the conventional pile-anchor mode. The test results can provide reference and basis for the design and construction of double-row steel pipe piles.
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影响因子：
1.5
作者：
Wu Gang
通讯作者：
Wu Gang
DOI：
--
发表时间：
2009
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Cheng Junsheng
通讯作者：
Cheng Junsheng
影响因子：
1.5
作者：
Li Xing-wang
通讯作者：
Li Xing-wang
影响因子：
2.9
作者：
Bingxiang Yuan;Lei Xiong;Li-hua Zhai;Yuefeng Zhou;Gongfa Chen;X. Gong;W. Zhang
通讯作者：
Bingxiang Yuan;Lei Xiong;Li-hua Zhai;Yuefeng Zhou;Gongfa Chen;X. Gong;W. Zhang
影响因子：
1.5
作者：
Zhao Guo-jing
通讯作者：
Zhao Guo-jing