广州南沙地区深厚软土地层灌注桩承载变形性状现场试验和数值模拟研究  

Field Test and Numerical Simulation Research on Bearing Deformation Behavior of Cast-in-place Piles in Deep Soft Soil Layers in Nansha,Guangzhou

作　　者：曾翔 ZENG Xiang(Guangdong Houpu Construction Engineering Co.,Ltd.Guangzhou 511493,China)

机构地区：[1]广东厚普建设工程有限公司,广州511493

出　　处：《广东土木与建筑》2021年第8期126-128,共3页Guangdong Architecture Civil Engineering

摘　　要：依托于广州市某热力电厂项目,通过单桩静载荷试验和有限元数值模拟,定量分析桩底沉渣厚度对灌注桩竖向承载性能的影响规律。结果表明:深厚软弱土层下卧岩层的地层条件的灌注桩的荷载-沉降曲线呈缓变型;随着桩底沉渣厚度增大,灌注桩的承载性状发生明显改变。可为类似工程提供参考依据。Based on a thermal power plant project in Guangzhou,this paper quantitatively analyzes the influence of bottom sediment thickness on the vertical bearing performance of cast-in-place piles through single pile static load test and finite element numerical simulation.The results show that the load-settlement curve of the cast-in-place pile under the stratum condition of the deep and weak soil layer is slow‐ly changing;As the thickness of the bottom sediment increases,the bearing properties of the cast-in-place pile change significantly.It can provide a reference basis for similar projects.

关 键 词：桩底沉渣 真空联合堆载预压 数值模拟 灌注桩 

分 类 号：TU473.14[建筑科学—结构工程]