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地下连续墙既能防渗挡土又能承受外部竖向和水平荷载,在地铁交通枢纽中的应用越来越广泛。但由于其承载力较大,现场承载力试验资料较少。本文基于墙顶水平荷载作用下软弱土地基中单片地下连续墙的现场试验,研究地下连续墙的水平受力承载性能,确定地连墙的水平临界荷载和极限承载能力,并根据钢筋应变计的数据分析了墙身应变,推算出墙身弯矩和墙侧土抗力,试验结果为超长超厚地下连续墙基础的设计和应用提供了重要依据。
Diaphragm wall can both seepage prevention soil and can withstand external vertical and horizontal load, in the subway traffic hub in the application of more and more widely. However, due to its large carrying capacity, the test data of on-site carrying capacity are few. Based on the field test of single continuous diaphragm wall in soft soil foundation under horizontal wall load, the horizontal bearing capacity of diaphragm wall is studied to determine the horizontal critical load and ultimate bearing capacity of diaphragm wall, The analysis of the wall strain, calculate the wall bending moment and wall side soil resistance, the test results provide an important basis for the design and application of ultra-long thick underground continuous wall foundation.