某特大桥锚碇深基坑开挖支护结构力学分析
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摘要
某特大桥为大跨径悬索桥,锚碇基坑大且深。其东岸锚碇周围环境十分复杂,西侧为湖泊水域,东侧为居民区且存在高边坡,基坑位于受力不均的条件下施工开挖,结构安全风险较大;施工场地狭小,存在取土难,安全控制难等问题。基坑开挖过程中,须保证基坑支护结构的稳定性,确保施工安全,且不对锚碇基坑周围环境产生不良影响,为此,必须采取相应施工计算,以达到施工安全的目的。
A special bridge is a large-span suspension bridge with large and deep anchor foundation pits. The surrounding environment of the anchorage on the east coast is very complicated. The west side is the lake water area,the east side is the residential area and there is a high slope. The foundation pit is placed under the condition of uneven force,and the structural is high risk of safety;The construction site is small,and there are problems such as difficulty in obtaining soil and difficulty in safety control. During the excavation of the foundation pit,the stability of the foundation pit supporting structure must be ensured to ensure the construction safety,and the surrounding environment of the anchor foundation pit is not adversely affected. Therefore,corresponding construction calculation must be taken to achieve the purpose of construction safety.
A special bridge is a large-span suspension bridge with large and deep anchor foundation pits. The surrounding environment of the anchorage on the east coast is very complicated. The west side is the lake water area,the east side is the residential area and there is a high slope. The foundation pit is placed under the condition of uneven force,and the structural is high risk of safety;The construction site is small,and there are problems such as difficulty in obtaining soil and difficulty in safety control. During the excavation of the foundation pit,the stability of the foundation pit supporting structure must be ensured to ensure the construction safety,and the surrounding environment of the anchor foundation pit is not adversely affected. Therefore,corresponding construction calculation must be taken to achieve the purpose of construction safety.
引文
[1]《公路桥涵施工技术规范》(JTC/T P50-2011).
[2]《公路悬索桥设计规范》(报批稿).
[3]《建筑基坑支护技术规程》(JGJ120-99).
[4]《岩土工程勘察规范》(GB50021-94).
[5]《建筑基坑工程监测技术规范》(GB 50497-2009).
[6]《建筑变形测量规范》(JBJ/T 8-97).
[8]《工程测量规范》(GB50026-93).
[2]《公路悬索桥设计规范》(报批稿).
[3]《建筑基坑支护技术规程》(JGJ120-99).
[4]《岩土工程勘察规范》(GB50021-94).
[5]《建筑基坑工程监测技术规范》(GB 50497-2009).
[6]《建筑变形测量规范》(JBJ/T 8-97).
[8]《工程测量规范》(GB50026-93).