Before formwork erection, it is necessary to measure to correct the foundation elevation of anti-collision wall. Too high or too low foundation will have a very serious impact on the later ctruction. If it is too high, the higher part must be chiseled out when installing the formwork, which is time-cuming, laborious and expensive. If it is too low, there may be gaps at the bottom of the formwork in the later stage, which will cause cement slurry to flow out and cause pockmarked surface.

支模时需要丈量来肯定防撞墙的平面位置和钢模的标高，这决议了防撞墙的线型和美不雅问题，丈量禁绝确，轻易造成防撞墙歪七扭八、凹凸不服，严重的乃至会跟下一段防撞墙构成错台，一旦发生错台，后期的处置将会花费更多的时候、精神、金钱。丈量正确了，防撞墙成型今后，线型流利，看起来就会很舒适、很标致。

防撞墙是为了避免车辆冲到道路之外的或桥梁之外而设置的，一般在高速公路桥梁中多见。为了削减车辆对周边周边区域酿成的危险性，避免车辆冲出桥梁也设置混凝土防撞墙。

Anti-collision waleyu����.txtlls are set up to prevent vehicles from rushing out of roads or bridges. They are usually found in highway bridges. In order to reduce the danger caused by vehicles to the surrounding areas, concrete anti-collision walls are also set up to prevent vehicles from rushing out of bridges.

最近几年来，跟着**经济高速成长，全国根本举措措施是扶植渐入**，各地根本举措措施扶植如火如荼地展开起来，作为**城市交通的主要手段之一，立交桥也在全国如雨后春笋般一座座耸立起来。防撞墙作为立交桥面系的主要构成部门，它不但担当着**责任，还直接影响着桥梁的美不雅，所以，若何对防撞墙施工质量进行杰出的节制同样成了一个不成轻忽的问题。