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Construction method for preventing differential settlement of filling and digging junction of collapsible loess site
The invention discloses a construction method for preventing differential settlement of a filling and digging interface of a collapsible loess site, which is implemented by the following steps of: 1, cleaning topsoil on an original filling and digging interface, and digging the original filling and digging interface into continuous steps along the height direction; secondly, layered backfilling and tamping are started from the lowest position of the filling area; thirdly, settlement transition zones are arranged on the two sides of the original filling and digging interface, and the lengths of the transition zones are gradually decreased along with the depth; fourthly, geogrids are laid in the settlement transition zone in a layered mode, and reverse wrapping sections are arranged on the two sides of the filling and digging portion of each layer of laid geogrids; fifthly, after each layer of geogrid is laid, layered backfilling and tamping are conducted; sixthly, waterproof geotextile is arranged on the surface layer of the geogrid on the uppermost layer, and then surface layer construction is conducted. By arranging the settlement transition zone, uniform transition of settlement of the filling area and the excavation area is guaranteed, and the problems of tension fracture, slab staggering, rainwater invasion and the like caused by uneven settlement of the filling and excavation junction are avoided.
本发明公开了一种防止湿陷性黄土场地填挖交界不均匀沉降的施工方法，该方法实现的步骤如下：步骤一：清理原始填挖交界面浮土，将原始填挖交界面开挖成沿高度方向的连续的台阶；步骤二：从填方区最低处开始分层回填夯实；步骤三：在原始填挖交界面两侧，设置沉降过渡带，过渡带长度随深度逐渐变小；步骤四：在沉降过渡带内分层铺设土工格栅，每层铺设土工格栅在填挖两侧设有反包段；步骤五：每层土工格栅铺设完成后进行分层回填夯实；步骤六：在最上层的土工格栅表层设置隔水土工布，随后进行面层施工。本发明通过设置沉降过渡带，保证了填方区和挖方区沉降能均匀过渡，避免了填挖交界处不均匀沉降造成的拉裂、错台、雨水入侵等问题的出现。
Construction method for preventing differential settlement of filling and digging junction of collapsible loess site
The invention discloses a construction method for preventing differential settlement of a filling and digging interface of a collapsible loess site, which is implemented by the following steps of: 1, cleaning topsoil on an original filling and digging interface, and digging the original filling and digging interface into continuous steps along the height direction; secondly, layered backfilling and tamping are started from the lowest position of the filling area; thirdly, settlement transition zones are arranged on the two sides of the original filling and digging interface, and the lengths of the transition zones are gradually decreased along with the depth; fourthly, geogrids are laid in the settlement transition zone in a layered mode, and reverse wrapping sections are arranged on the two sides of the filling and digging portion of each layer of laid geogrids; fifthly, after each layer of geogrid is laid, layered backfilling and tamping are conducted; sixthly, waterproof geotextile is arranged on the surface layer of the geogrid on the uppermost layer, and then surface layer construction is conducted. By arranging the settlement transition zone, uniform transition of settlement of the filling area and the excavation area is guaranteed, and the problems of tension fracture, slab staggering, rainwater invasion and the like caused by uneven settlement of the filling and excavation junction are avoided.
本发明公开了一种防止湿陷性黄土场地填挖交界不均匀沉降的施工方法，该方法实现的步骤如下：步骤一：清理原始填挖交界面浮土，将原始填挖交界面开挖成沿高度方向的连续的台阶；步骤二：从填方区最低处开始分层回填夯实；步骤三：在原始填挖交界面两侧，设置沉降过渡带，过渡带长度随深度逐渐变小；步骤四：在沉降过渡带内分层铺设土工格栅，每层铺设土工格栅在填挖两侧设有反包段；步骤五：每层土工格栅铺设完成后进行分层回填夯实；步骤六：在最上层的土工格栅表层设置隔水土工布，随后进行面层施工。本发明通过设置沉降过渡带，保证了填方区和挖方区沉降能均匀过渡，避免了填挖交界处不均匀沉降造成的拉裂、错台、雨水入侵等问题的出现。
Construction method for preventing differential settlement of filling and digging junction of collapsible loess site
一种防止湿陷性黄土场地填挖交界不均匀沉降的施工方法
ZHANG JIANHUA (author) / ZHAO JIE (author) / YAN BIN (author) / NAN SHUAI (author) / ZHOU QIJIAN (author) / YANG DONG (author) / DING LIN (author) / LI YONGLIANG (author) / GUAN XUAN (author) / QIU HAILONG (author)
2024-02-23
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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