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混凝土桥梁裂缝的种类,就其产生的原因。主要可划分如下几种: 一、荷载引起的裂缝混凝土桥梁在常规静、动荷载及次应力下产生的裂缝称荷载裂缝,归纳起来主要有直接应力裂缝、次应力裂缝两种。直接应力裂缝是指外荷载引起的直接应力产生的裂缝。裂缝产生的原因有: 1、设计计算阶段,结构计算时不计算或部分漏算;计算模型不合理;结构受力假设与实际受力不符;荷载少算或漏算;内力与配筋计算错误;结构安全系数不够。结构设计时不考虑施工的可能性;设计断面不足;钢筋设置偏少或布置
Concrete cracks in the type of bridge, its causes. Mainly divided into the following categories: First, the load caused by cracks Concrete bridge in the conventional static and dynamic load and secondary stress generated cracks called load cracks, summed up there are two direct stress cracks, secondary stress cracks. Direct stress cracks refer to cracks caused by direct stresses caused by external loads. The reasons for the cracks are as follows: 1, The calculation and calculation stage is not calculated or partially missed in the structural calculation; the calculation model is not reasonable; the structural stress assumption is inconsistent with the actual stress; the load is neglected or missing; ; Structural safety factor is not enough. Structural design does not consider the possibility of construction; lack of design cross section;