桥面整体化层混凝土施工裂缝控制分析

混凝土开裂可以说是“常见病”和“多发病”。长期困扰着桥梁工程技术人员．混凝土裂缝出现的原因很多。从设计到施工、从混凝土原材料到配合比。任何一个环节的疏忽都可能导致裂缝的出现．由于混凝土本身实际收缩量就大干混凝土这种材料的允许变形量。因此。混凝土的裂缝很难避免。关键在于控制裂缝的生长宽度．笔者以桥面整体化层为例。尽可能对商品混凝土引起的裂缝的种类和产生的原因作较全面的分析、总结，以方便施工中找出控制裂缝的可行办法。达到防范作用．

Control Analysis on Concrete Construction Rifts in Integration Tier of Bridge Roadway

Being considered as "common illness" or "frequently occurring disease",concrete rifts perplexed bridgework technician for a long time.The concrete rifts appear due to many reasons.From design to construction and from concrete raw material to mixture ratio,a fault in any link is likely to cause rifts.The concrete's self actual contraction amount is greater than its allowing deformation amount.Therefore,it is difficult to avoid rifts in the material.The key is in controlling over the growth width of the concrete rifts.Take the integration tier of bridge roadway as an example,the sorts and causes of rifts in commodity concrete are analyzed and summaried all round as far as possible in the essay.So that the feasible way can be found in the construction for preventing trouble before it happens.