采用盖板结构肥槽的基坑系统设计
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摘要
开挖单侧山体形成的建筑基坑,往往深度较大。如果可以敞露,则可按照边坡处理;如果需要原状恢复,一般情况会优先考虑回填。在建筑无法提供足够的水平抗力情况下,单纯回填将影响建筑的安全。依托具体的工程实例,进行基坑顶部盖板系统的设计,承担上部覆土绿化,解决场地原状恢复的要求。针对基坑部分回填方案,对基坑的敞露段及回填段分别按照边坡、基坑标准设计。对于盖板系统,采用同结构相同的设计等级,考虑地震作用进行承载力计算,并采取了适当的构造措施以提高其稳定性。
The foundation excavations near the mountainside usually have a large excavation depth.After the foundation construction,if the gap between the foundation and the supporting system can be left open,the supporting system should be permanently stabilized.If the gap needs to be restored to its original appearance,the backfill method will usually be considered first.Excessive lateral earth pressure might adversely affect the safety of the foundation system.This paper presents a cover slab system design over gap between the excavation supporting system and the foundation.Vegetation is planted on the cover so that the site is environmentally friendly.For the backfill portion,the foundation is designed for the lateral earth pressure induced from the backfill soils;for the opening portion,the supporting system is designed for the permanent conditions;for the covered portion,the cover and supporting system have the same design requirement as the foundation system for the stability requirement such as,seismic conditions.
The foundation excavations near the mountainside usually have a large excavation depth.After the foundation construction,if the gap between the foundation and the supporting system can be left open,the supporting system should be permanently stabilized.If the gap needs to be restored to its original appearance,the backfill method will usually be considered first.Excessive lateral earth pressure might adversely affect the safety of the foundation system.This paper presents a cover slab system design over gap between the excavation supporting system and the foundation.Vegetation is planted on the cover so that the site is environmentally friendly.For the backfill portion,the foundation is designed for the lateral earth pressure induced from the backfill soils;for the opening portion,the supporting system is designed for the permanent conditions;for the covered portion,the cover and supporting system have the same design requirement as the foundation system for the stability requirement such as,seismic conditions.
引文
[1]建筑边坡工程技术规范(GB 50330-2013)[S].
[2]建筑基坑支护技术规程(JGJ 120-2012)[S].
[3]混凝土结构设计规范(GB 20010-2010)[S].
[4]熊昌,周小松.无肥槽施工技术在深基坑支护中的应用[J].山西建筑,2017年12月
[2]建筑基坑支护技术规程(JGJ 120-2012)[S].
[3]混凝土结构设计规范(GB 20010-2010)[S].
[4]熊昌,周小松.无肥槽施工技术在深基坑支护中的应用[J].山西建筑,2017年12月