文档介绍：摘要
桥梁是确保公路畅通咽喉,其承载能力和通行能力又是贯通全线的关键。所以有计划的、有步骤的突出重点,及时加强对现有桥梁的检测调查研究,区别情况,分析损坏原因,采取相应的维修措施是必要的。
诸永高速公路温州段S12、S14标各包括一座特大桥,分别为河屿高架桥和楠溪江大桥。为了系统地掌握桥梁技术状况,及时发现缺损,采取相应的养护措施,确保高速公路桥梁的安全运营。我们对这两座桥进行了工程缺陷期全面的健康检测。检测内容包括:外观检查、裂缝检测、钢筋锈蚀、支座检查等。检测、检查中对发现的问题进行详细记录,并分析原因。在报告中根据不同桥型的相应病害提出了维修处治建议。
桥梁工程缺陷期常见的主要病害基本符合各构件的受力分布。伸缩缝处由于伸缩量过大导致的橡胶开裂。梁底板横向裂缝、支座附近腹板斜向裂缝较为严重,横隔板裂缝较为普遍,曲线桥外侧防震挡块被挤裂,易导致落梁。支座脱空、移位等,易导致梁正负弯矩去的改变,后果较严重,桥墩台的竖向裂缝较为普遍。根据病害成因级处治建议对桥梁进行一般性维修和结构性加固。
关键词:桥梁,病害,裂缝,检测,处治建议
Abstract
Bridge is to keep roads free throat, through all of its carrying capacity and capacity are critical. So planned, systematic focus on strengthening investigation on existing bridge detection in a timely manner, difference, analysis of damage causes and take appropriate maintenance measures are necessary.
Zhu Yong-Wenzhou Expressway S12, S14, includes a bridge, viaduct and River Island along nanxi River Bridge, respectively. In order to systematically master the technical condition of bridge, timely detection of defects, take appropriate conservation measures, and ensure the safety of highway bridge operations. We are prehensive health monitoring of bridge engineering defects. Detection includes: Visual inspection, cracks, rust, bearing checking, etc. To detail the problems found in testing and examination records, and to analyze the reasons. Report according to different type of the appropriate make mendations for maintenance treatment of diseases.
Bridge project of the main diseases mon plies with the stress distribution of ponents. Expansion joint expansion amount due to excessive rubber craze. Transverse crack, support beam slab inclined to crack near webs are serious, horizontal mon cracks, the lateral shock block piece curve bridge was cracked, easy to fall beam. Bearings, and shift, contractors and easy to beam bending moment of positive and negative to change, the consequence is more serious, bridge pier platform of vertical cracks widespread. According to the disease causes trea