苏通大桥超长灌注桩基持力层分析

Analysis of Bearing Layer for Piles in Sutong Highway Bridge

本文以苏通大桥为例用优势指标法对桥址区持力层进行了优选分析。先找出针对持力层的优势指标 ,再给出各优势指标的权重值和因子值 ,即可求出各持力层方案的综合值。结果表明 ,选 8— 1中粗砂层作为桩基持力层是最佳方案 ;优势指标法不失为一简单、实用而可靠的方法。

This paper have a optimization analysis of bearing layer for piles in Sutong highway bridge on Yangtze River by preferred index method. The result shows that 8-1 layer is best bearing layer, and the preferred index method is a simple, applicable and reliable method.