既有混凝土结构现存应力测试方法研究  

On the testing method for the existing stress of concrete structures

作　　者：时蓓玲[1] 吴锋[1] 孙穆[1] 

机构地区：[1]中交上海三航科学研究院有限公司,上海200032

出　　处：《水运工程》2011年第1期131-135,共5页Port & Waterway Engineering

摘　　要：混凝土实际应力水平是反映混凝土结构受力状况的最重要的指标之一,从而也是反映混凝土结构功能可靠性的主要指标。利用应力释放的力学原理,进行了既有钢筋混凝土结构现存应力测试研究,同时对应力测试结果的影响因素进行了系统的研究,并进行了相应的应力测试试验,验证了该方法的正确性,为准确评估现有结构承载力提供了可靠的试验方法。Actual stress level is an important indicator of concretes′ status,which is also a major indicator of concrete structures′ reliability.This paper conducted a test research on the existing stress of reinforced concrete structures by means of stress release method and carried out a systematic research on the incomplete degree of stress release with various members.In the mean time,corresponding stress tests were conducted to demonstrate the validity of the method used,thus providing a reliable test method for accurate evaluation of the bearing capacity of existing structures.

关 键 词：混凝土结构 现存应力 应力释放 

分 类 号：TU317.3[建筑科学—结构工程]