长吉高速公路饮马河大桥墩柱检测技术及病害分析.rar

长吉高速公路饮马河大桥墩柱检测技术及病害分析

摘　要　针对长吉高速公路饮马河大桥桥墩柱身出现不同程度的裂缝病害，通过现场调查、检测和材料试验，分析裂缝产生原因和对破坏机理研究的基础上，提出综合技术评价。然后根据检测结论提出相应的墩柱加固设计和施工技术处理方案，为桥梁检测与加固设计提供实例
具有重要理论价值和经济价值。
关键词　饮马河大桥  墩柱 　检测技术　 试验   病害分析     
一、桥梁概况
1.大桥设计情况概述
饮马河大桥位于长春至吉林高速公路上，1996年7月30日竣工，1997年10月正式投入运营，通车后运营正常，并进行了正常养护。该桥上部主梁结构为预应力砼简支箱梁，下部结构为钻孔灌注桩基础，肋板式埋置桥台，柱式桥墩。桥台钻孔灌注桩设计桩径为110厘米，双排桩长16米。桥墩钻孔灌注桩基础桩径为140厘米，桩长15.5~19.7米不等。桥墩采用三柱式钢筋砼柱式墩，墩柱高度为8.3~14.4米不等，柱直径为120厘米，砼设计标号为25号，纵向受力主筋为22Φ20，箍筋为φ8，砼净保护层厚度为3cm。
2．大桥下部结构状况
    饮马河大桥于1996年7月30日竣工，1997年10月正式投入运营，通车后运营正常，并进行了常规养护。近几年来，发现桥梁墩柱砼出现不同程度的裂缝，尤以竖向裂缝为重，特别是4号、5号、6号墩的个别柱砼竖向裂缝发展较快。为确保桥梁运行安全，省交通厅组织有关单位进行了现场勘察，研究有关对策，并对桥梁下部工程特别是墩柱裂缝进行了全面调查，在试验检测分析的基
Long Ji Highway Bridge Pier Yinma Disease Detection and Analysis

Abstract Long Ji Expressway Yinma Bridge column body Crack different degrees, by field investigation, testing and materials testing, analysis and cause of the cracks on the failure mechanism based on the proposed comprehensive technical evaluation. Then the corresponding conclusions based on test design and construction of pier reinforcement technology processing solutions for bridge inspection and reinforcement design examples
Has important theoretical value and economic value.
Key words Yinma Bridge Pier detection test of disease
First, the bridge profile
1. Bridge Overview
Yinma Bridge in Changchun to Jilin highway, July 30, 1996 was completed in October 1997 officially put into operation, normal operation after the opening and conducted regular maintenance. Girder bridge superstructure was the pre concrete box girder and substructure for the bored pile foundation Rib abutment plate embedded, column pier. Abutment design pile diameter bored piles of 110 cm, length 16 m double pile. Diameter bored pile foundation pier is 140 cm, pile length ranging from 15.5 to 19.7 meters. Reinforced concrete bridge pier column with three column pier, pier height ranging from 8.3 to 14.4 m, column diameter of 120 cm, concrete design numbered 25, the longitudinal force main reinforcement for the 22Φ20, stirrup to φ8, the net protection of concrete thickness of 3cm.
2. Bridge structural condition of the lower
    Yinma Bridge on July 30, 1996 was completed in October 1997 officially put into operation, normal operation after the opening and conducted routine maintenance. In recent years, found that different degrees of concrete bridge pier cracks, especially vertical cracks as the weight, especially 4, 5, 6, vertical concrete pier columns of individual cracks developed rapidly. To ensure safe operation of the bridge, the Provincial Communications Department organized the units on-site inspections to examine the countermeasures, and the bridge pier cracks in the lower part of the special is a comprehensive survey of the basic test