A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for preventing roadbed slope freeze-thaw instability in plateau frozen soil area
The invention discloses a construction method for preventing roadbed slope freeze-thaw instability in a plateau frozen soil area. The construction method comprises the steps of foundation pit survey setting-out, foundation pit excavation treatment, formwork installation, construction of an inverted-inclined type immersed road shoulder wall and backfill construction of the wall back of the road shoulder wall. Before a foundation pit is excavated, the excavation depth and the excavation side boundary of the foundation pit are determined according to the original ground elevation, the designed elevation of the bottom of the inverted-inclined type road shoulder wall and the geometric dimension of the inverted-inclined type road shoulder wall, lime lines are sprayed for identification, foundation excavation is conducted according to the identification, and after excavation is conducted to the designed elevation, floating soil of a base is removed and leveled; and after the base is tamped, an inverted-inclined type immersed road shoulder wall formwork is installed, after installation is completed, the inverted-inclined type immersed road shoulder wall is poured and maintained, and finally wall back backfill is conducted. According to the scheme, a drainage system is arranged in the inverted-inclined type road shoulder wall, water retained in the roadbed due to freezing and thawing ofthe roadbed slope can be effectively drained, and then the phenomenon of instability caused by freezing and thawing of the roadbed slope in the plateau frozen earth area is controlled.
一种高原冻土地区防治路基边坡冻融失稳的施工方法，包括基坑测量放样、基坑开挖处理、模板安装、仰斜式浸水路肩墙的施工以及路肩墙墙背回填施工。基坑开挖之前根据原地面高程与仰斜式路肩墙底部设计高程及仰斜式路肩墙几何尺寸确定基坑开挖深度及开挖边线，并洒白灰线进行标识，按照标识进行基础开挖，开挖至设计标高后，清除基底的浮土并进行整平，基底夯实后进行仰斜式浸水路肩墙模板的安装，安装完成后进行仰斜式浸水路肩墙的浇筑与养护，最后进行墙背回填。本方案通过在仰斜式路肩墙内设置排水系统，可以有效排出因路基边坡冻融滞留在路基内的水，进而控制高原冻土地区路基边坡发生冻融引起失稳的现象。
Construction method for preventing roadbed slope freeze-thaw instability in plateau frozen soil area
The invention discloses a construction method for preventing roadbed slope freeze-thaw instability in a plateau frozen soil area. The construction method comprises the steps of foundation pit survey setting-out, foundation pit excavation treatment, formwork installation, construction of an inverted-inclined type immersed road shoulder wall and backfill construction of the wall back of the road shoulder wall. Before a foundation pit is excavated, the excavation depth and the excavation side boundary of the foundation pit are determined according to the original ground elevation, the designed elevation of the bottom of the inverted-inclined type road shoulder wall and the geometric dimension of the inverted-inclined type road shoulder wall, lime lines are sprayed for identification, foundation excavation is conducted according to the identification, and after excavation is conducted to the designed elevation, floating soil of a base is removed and leveled; and after the base is tamped, an inverted-inclined type immersed road shoulder wall formwork is installed, after installation is completed, the inverted-inclined type immersed road shoulder wall is poured and maintained, and finally wall back backfill is conducted. According to the scheme, a drainage system is arranged in the inverted-inclined type road shoulder wall, water retained in the roadbed due to freezing and thawing ofthe roadbed slope can be effectively drained, and then the phenomenon of instability caused by freezing and thawing of the roadbed slope in the plateau frozen earth area is controlled.
一种高原冻土地区防治路基边坡冻融失稳的施工方法，包括基坑测量放样、基坑开挖处理、模板安装、仰斜式浸水路肩墙的施工以及路肩墙墙背回填施工。基坑开挖之前根据原地面高程与仰斜式路肩墙底部设计高程及仰斜式路肩墙几何尺寸确定基坑开挖深度及开挖边线，并洒白灰线进行标识，按照标识进行基础开挖，开挖至设计标高后，清除基底的浮土并进行整平，基底夯实后进行仰斜式浸水路肩墙模板的安装，安装完成后进行仰斜式浸水路肩墙的浇筑与养护，最后进行墙背回填。本方案通过在仰斜式路肩墙内设置排水系统，可以有效排出因路基边坡冻融滞留在路基内的水，进而控制高原冻土地区路基边坡发生冻融引起失稳的现象。
Construction method for preventing roadbed slope freeze-thaw instability in plateau frozen soil area
一种高原冻土地区防治路基边坡冻融失稳的施工方法
MIAO XIANGDA (author) / LIU RUNXI (author) / GUO YONGQI (author) / DING JIAOYUE (author) / WANG XIAOCHUAN (author) / CHENG WEIFENG (author) / ZHANG XIONGWEI (author) / ZHANG YAOYANG (author) / LIANG BIN (author)
2020-12-18
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
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CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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