南京水碧桥的静力荷载试验  

Static Loading Tests for Shuibi Bridges in Nanjing City

作　　者：邓友生[1,2] 姚华伟[3] 田青芸[1] 

机构地区：[1]湖北工业大学土木工程与建筑学院,湖北武汉430068 [2]湖南大学土木工程学院,湖南长沙410082 [3]南京市政公用工程质量检测中心站,江苏南京210014

出　　处：《公路工程》2011年第2期13-17,共5页Highway Engineering

基　　金：湖北省教育厅重点项目(D20101401)

摘　　要：桥梁的静力荷载试验是检验桥梁结构安全运营的有效途径之一。本次静力荷载试验针对水碧桥3个试验桥跨进行6种工况的加载试验。试验结果表明:各试验桥跨挠度测试截面的实测挠度和应力均小于计算值,跨中最大实测活载挠度与计算跨径之比小于规范限值。荷载卸除后,残余应变较小,最大实测相对残余应变为8.0%。荷载试验前以及加载试验过程中,在各试验桥跨测试截面及附近区域的T梁表面未发现可见裂缝。因此,该桥的刚度和强度都满足设计要求。Static loading tests for bridge is one of effective methods to detect its structure safety.The loading tests were carried out for three spans of Shuibi bridges at six states.The results of tests indicated that,all test values of deflection and stress in section of span are less than their corresponding theoretical values,the ratio of live-load maximum test deflection to calculating span is less than code limitation also.Residual strain is small as unloading,the maximum relative residual strain in test is 8.0%.No visible crack had been found at test section or its adjacent zones in T beam surface before and after tests.so all strength and stiffness of the bridges meet with the need of design.

关 键 词：水碧桥 应力 挠度 裂缝 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]