TSC管桩抗弯强度计算方法

Study of TSC pipe pile bending strength calculation

TSC管桩的抗弯性能是进行桩基设计的重要指标。现行JG/T 272—2010中抗弯强度计算依据DL/T 5030—1996标准规定,而DL/T 5030—1996中对混凝土壁厚有严格规定,对TSC管桩的适用性有待商榷。针对TSC管桩抗弯承载力进行了理论推导,建立了管桩抗弯强度理论计算方法,同时与JG/T 272—2010规范值进行对比分析。计算结果表明该抗弯强度理论公式与规范值结果吻合程度较好,适用性更广。

TSC pipe pile bending capacity is an important index of the pile foundation design. Current JG/T 272--2010 in bending strength calculation is on the basis of DL/T 5030--1996 standard, and the wall thickness of concrete according to DL/T 5030--1996 has strict rules whose application in the TSC pipe pile is up for debate.This paper has carried on the theoretical derivation of TSC bearing capacity.Bending strength calculation method of pipe pile is established. At the same time comparison and analysis is made with the current standard values. The calculation results show that the theoretical formula of bending strength which built in this paper matches well with the standard values, and it can be used in the TSC pipe pile flexural strength calculation.