A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roadbed splicing construction method in expressway reconstruction and extension
The invention discloses a roadbed splicing construction method in expressway reconstruction and extension. The method comprises the following steps: 1, removing surface soil of a roadbed substrate tobe widened, and rolling the substrate after the surface soil is removed before filling; 2, laying geocells on the base, and manually scattering gravels in the geocells; 3, performing slope cutting onthe to-be-widened side of the old roadbed, excavating steps at the slope part from top to bottom, and after the steps are excavated, and laying steel-plastic grids at the roadbed along the step surfaces; and 4, performing layered filling on the roadbed to be widened, and arranging settlement observation points and horizontal displacement observation points in the roadbed filling process. With application of the roadbed splicing method, the new roadbed and the old roadbed are well connected, longitudinal cracks caused by differential settlement of the new roadbed and the old roadbed are avoided, and thus the construction quality of highway reconstruction and extension engineering projects is guaranteed, and the highway construction level of China can be improved.
本发明公开了一种高速公路改扩建中路基拼接施工方法，包括以下步骤：步骤一、清除待加宽路基基底表土，对清除表土后的基底进行填前碾压；步骤二、在基底铺设土工格室，并在土工格室内人工撒布碎石；步骤三、对老路基待加宽侧进行削坡，并在边坡部位自上而下开挖台阶，台阶开挖后在路床处沿台阶面铺设钢塑格栅；步骤四、对待加宽路基进行分层填筑，并在路基填筑过程中布设沉降观测点以及水平位移观测点。采用该路基拼接工法使得新老路基得到了良好的衔接，避免新老路基不均匀沉降而产生纵向裂缝，从而保证高速公路改扩建工程项目的施工质量，有利于提升我国高速公路建设水平。
Roadbed splicing construction method in expressway reconstruction and extension
The invention discloses a roadbed splicing construction method in expressway reconstruction and extension. The method comprises the following steps: 1, removing surface soil of a roadbed substrate tobe widened, and rolling the substrate after the surface soil is removed before filling; 2, laying geocells on the base, and manually scattering gravels in the geocells; 3, performing slope cutting onthe to-be-widened side of the old roadbed, excavating steps at the slope part from top to bottom, and after the steps are excavated, and laying steel-plastic grids at the roadbed along the step surfaces; and 4, performing layered filling on the roadbed to be widened, and arranging settlement observation points and horizontal displacement observation points in the roadbed filling process. With application of the roadbed splicing method, the new roadbed and the old roadbed are well connected, longitudinal cracks caused by differential settlement of the new roadbed and the old roadbed are avoided, and thus the construction quality of highway reconstruction and extension engineering projects is guaranteed, and the highway construction level of China can be improved.
本发明公开了一种高速公路改扩建中路基拼接施工方法，包括以下步骤：步骤一、清除待加宽路基基底表土，对清除表土后的基底进行填前碾压；步骤二、在基底铺设土工格室，并在土工格室内人工撒布碎石；步骤三、对老路基待加宽侧进行削坡，并在边坡部位自上而下开挖台阶，台阶开挖后在路床处沿台阶面铺设钢塑格栅；步骤四、对待加宽路基进行分层填筑，并在路基填筑过程中布设沉降观测点以及水平位移观测点。采用该路基拼接工法使得新老路基得到了良好的衔接，避免新老路基不均匀沉降而产生纵向裂缝，从而保证高速公路改扩建工程项目的施工质量，有利于提升我国高速公路建设水平。
Roadbed splicing construction method in expressway reconstruction and extension
一种高速公路改扩建中路基拼接施工方法
CHANG HUI (author) / LYU ZHENWEI (author) / YIN ZHIYONG (author) / CHEN WENPING (author) / LIU YONGMEI (author) / XIONG ZHIGANG (author) / ZHOU QI (author) / MA MIN (author)
2020-08-04
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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