论文部分内容阅读
在城市地下建筑和高层建筑深基础施工过程中,经常会遇到由于场地的限制,要求土方直壁式开挖,为了确保土坡稳定,必须采取相应的支护措施,以往常用的方法有:①护坡桩,采用有锚杆或无锚杆的大直径钢筋混凝土灌注桩;②地下连续墙;③钢板桩,环梁护壁桩等.以上各种方法,各有利弊,本文介绍一种充分发挥锚杆锚固力的锚喷网支护法.该法可随基坑的开挖,逐层钻孔制作全长灌浆锚杆,并喷注钢筋网混凝土面层,其优点是明显缩短施工期,降低支护费用.
In the process of deep foundation construction of urban underground buildings and high-rise buildings, it is often encountered that due to site constraints, earthworks are required to be excavated by straight walls. In order to ensure stability of the earth slopes, corresponding support measures must be taken. The commonly used methods in the past are: 1 Slope protection piles, using large-diameter reinforced concrete cast-in-place piles with anchor rods or without anchor rods; 2 underground continuous walls; 3 steel sheet piles, ring beam retaining wall piles, etc. Each of the above methods has its own advantages and disadvantages. This article introduces a full play. Anchor Bolt Shotcreting Support Method for Anchoring Strength of Anchors. This method can be used to excavate foundation pits and make layer-by-layer drilling to make full-length grouted anchor rods and inject steel mesh concrete surface. This has the advantage of significantly shortening the construction period and reducing Support costs.