A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Differential settlement control structure for road and bridge transition section in permafrost region and construction method of differential settlement control structure
The invention relates to a structure for controlling differential settlement of a road-bridge transition section in a permafrost region. The structure comprises a conventional roadbed, an asphalt pavement, a bridge abutment and a road-bridge transition section roadbed. A block stone extrusion layer is arranged below the road-bridge transition section roadbed; the bottom surface of the block stone extrusion layer is a transverse drainage slope, a prefabricated pipe pile is arranged at the bottom, and anti-seepage geotechnical cloth I is laid on the bottom surface of the block stone extrusion layer; anti-seepage geotechnical cloth II is laid on the slope surface of the road-bridge transition section roadbed, and a heat preservation layer I and a composite geogrid are laid in the middle; permeable geotextile is laid at the joint of the road and bridge transition section roadbed and the block stone extrusion layer; laying a thermal insulation layer II on the slope surface of the abutment protection cone; ventilation bricks are laid on the road-bridge transition section roadbed slope surface and the outer layer of the bridge abutment protection cone, and a plurality of L-shaped hot rods are inserted into the ventilation bricks. U-shaped drainage ditches are formed in the surfaces of the movable layers on the two sides of the road and bridge transition section roadbed, and water seepage blind ditches are formed in the lower portions of the U-shaped drainage ditches; the water seepage blind ditch is connected with the block stone extrusion layer through a guide pipe. The invention further discloses a construction method of the structure. According to the invention, collapse, cracking and differential settlement of the pavement can be avoided.
本发明涉及一种多年冻土区路桥过渡段不均匀沉降控制的结构，包括常规路基、沥青路面、桥台和路桥过渡段路基。路桥过渡段路基下方设块石挤压层；块石挤压层底面为横向排水坡，底部设预制管桩，该块石挤压层的底面铺设防渗土工布Ⅰ；路桥过渡段路基坡面铺设防渗土工布Ⅱ，中部铺设保温层Ⅰ及复合土工格栅；路桥过渡段路基与块石挤压层相接处铺设透水土工布；桥台护锥坡面铺设保温层Ⅱ；路桥过渡段路基坡面与桥台护锥外层均铺设通风砖，且插有多根L型热棒；路桥过渡段路基两侧的活动层表面设U型排水沟，U型排水沟的下部设渗水盲沟；渗水盲沟与块石挤压层通过导管相连。本发明还公开了该结构的施工方法。本发明可避免路面塌陷、开裂及不均匀沉降。
Differential settlement control structure for road and bridge transition section in permafrost region and construction method of differential settlement control structure
The invention relates to a structure for controlling differential settlement of a road-bridge transition section in a permafrost region. The structure comprises a conventional roadbed, an asphalt pavement, a bridge abutment and a road-bridge transition section roadbed. A block stone extrusion layer is arranged below the road-bridge transition section roadbed; the bottom surface of the block stone extrusion layer is a transverse drainage slope, a prefabricated pipe pile is arranged at the bottom, and anti-seepage geotechnical cloth I is laid on the bottom surface of the block stone extrusion layer; anti-seepage geotechnical cloth II is laid on the slope surface of the road-bridge transition section roadbed, and a heat preservation layer I and a composite geogrid are laid in the middle; permeable geotextile is laid at the joint of the road and bridge transition section roadbed and the block stone extrusion layer; laying a thermal insulation layer II on the slope surface of the abutment protection cone; ventilation bricks are laid on the road-bridge transition section roadbed slope surface and the outer layer of the bridge abutment protection cone, and a plurality of L-shaped hot rods are inserted into the ventilation bricks. U-shaped drainage ditches are formed in the surfaces of the movable layers on the two sides of the road and bridge transition section roadbed, and water seepage blind ditches are formed in the lower portions of the U-shaped drainage ditches; the water seepage blind ditch is connected with the block stone extrusion layer through a guide pipe. The invention further discloses a construction method of the structure. According to the invention, collapse, cracking and differential settlement of the pavement can be avoided.
本发明涉及一种多年冻土区路桥过渡段不均匀沉降控制的结构，包括常规路基、沥青路面、桥台和路桥过渡段路基。路桥过渡段路基下方设块石挤压层；块石挤压层底面为横向排水坡，底部设预制管桩，该块石挤压层的底面铺设防渗土工布Ⅰ；路桥过渡段路基坡面铺设防渗土工布Ⅱ，中部铺设保温层Ⅰ及复合土工格栅；路桥过渡段路基与块石挤压层相接处铺设透水土工布；桥台护锥坡面铺设保温层Ⅱ；路桥过渡段路基坡面与桥台护锥外层均铺设通风砖，且插有多根L型热棒；路桥过渡段路基两侧的活动层表面设U型排水沟，U型排水沟的下部设渗水盲沟；渗水盲沟与块石挤压层通过导管相连。本发明还公开了该结构的施工方法。本发明可避免路面塌陷、开裂及不均匀沉降。
Differential settlement control structure for road and bridge transition section in permafrost region and construction method of differential settlement control structure
多年冻土区路桥过渡段不均匀沉降控制结构及其施工方法
LAI YUANMING (author) / MA QINGUO (author) / ZHOU KEYU (author) / LUO XIAOXIAO (author) / CHEN WENXUAN (author)
2024-12-03
Patent
Electronic Resource
Chinese
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