一种随路基沉降式检查井井盖及支座安装方法介绍

传统的管道检查井井盖及支座直接安装在砖砌或预制井筒上,不会随管沟回填土的沉降而沉降。当管沟回填路基沉降引起路面沉降时,井盖就会凸出路面,这极大地增加了汽车对井盖的冲击荷载,严重影响行车的舒适性。本文介绍了一种新型的井盖及支座安装方法,将井盖及支座安装在一块环形钢筋混凝土板上,而环形板坐落在管沟回填路基上,与井筒之间则采用柔性连接。这种安装方法使得井盖及支座可以随管沟回填路基的沉降而沉降,从而有效避免了井盖凸出路面的问题。

Introduction of One kind of Settleable Manhole Cover Subsiding With Ground Foundation and Its Support In stallation

The manhole cover and its support is directly assembled on the brick block or precast cylindrical shell traditionally.They don’t follow the settlement of backfill in pipe duct.When settlement of backfill in pipe duct causing pavement settled,the manhole cover is higher than the pavement.It greatly increase impact load of carriage to manhole cover and seriously influence the comfortability of carriage running.A new assembling method of manhole cover and its support is introduced in this paper.They are assembled on a ring R.C slab.The latter is located on the backfill in pipe duct and flexible connect to the cylindrical shell.By such assembling method the manhole cover and its support can follow the settlement of backfill in pipe duct.Thereby,it will effectively avoid the problem of the manhole cover higher than the pavement.