Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method using foam lightweight concrete as foundation pit backfill material
The invention discloses a construction method using foam lightweight concrete as a foundation pit backfill material, which comprises the following steps of: carrying out field investigation and slope surface treatment, carrying out foam lightweight concrete backfill material proportioning test in combination with geological exploration data, design requirements and economical efficiency, determining the foam lightweight concrete mix proportion, and carrying out foundation pit backfill material proportioning test. The method comprises the following steps: determining the length of a construction section and the thickness of a pouring layer according to the scale of a construction working face and the allocation condition of constructors, and according to design data, if an overlying structure and the thickness of a structure layer subtracted from the elevation of the top surface of the structure are the backfill elevation and are larger than or equal to the sum of the tunnel structure elevation and 0.5 m, if no overlying structure exists, reducing 0.7 m according to the ground elevation and the backfill elevation is not larger than 0.5 m. And the height is greater than or equal to the sum of the tunnel structure elevation and 0.5 m. The load-reducing layer is formed by the foam lightweight concrete, has the characteristics of flexible construction, good fluidity, low density and good load-reducing effect, and can effectively reduce the influence of load on the underground structure and prolong the service life of the underground structure.
本发明公开了一种用泡沫轻质混凝土作为基坑回填材料的施工方法，该方法步骤如下：现场勘察及坡面处理，结合地勘资料、设计要求及经济性进行泡沫轻质混凝土回填料配比试验，确定泡沫轻质混凝土配合比，根据施工工作面规模及施工人员配备情况，确定施工段长度及浇筑层厚度，根据设计资料，若上覆构筑物，构筑物顶面标高减结构层厚度即为回填高程，且满足大于等于隧道结构高程加0.5m，若无上覆构筑物，则按地面高程减0.7m，且满足大于等于隧道结构高程加0.5m。本发明采用的泡沫轻质混凝土形成减荷层，具有施工灵活、流动性好、密度低、减荷效果好的特点，可有效降低荷载对地下结构的影响，延长地下结构使用年限。
Construction method using foam lightweight concrete as foundation pit backfill material
The invention discloses a construction method using foam lightweight concrete as a foundation pit backfill material, which comprises the following steps of: carrying out field investigation and slope surface treatment, carrying out foam lightweight concrete backfill material proportioning test in combination with geological exploration data, design requirements and economical efficiency, determining the foam lightweight concrete mix proportion, and carrying out foundation pit backfill material proportioning test. The method comprises the following steps: determining the length of a construction section and the thickness of a pouring layer according to the scale of a construction working face and the allocation condition of constructors, and according to design data, if an overlying structure and the thickness of a structure layer subtracted from the elevation of the top surface of the structure are the backfill elevation and are larger than or equal to the sum of the tunnel structure elevation and 0.5 m, if no overlying structure exists, reducing 0.7 m according to the ground elevation and the backfill elevation is not larger than 0.5 m. And the height is greater than or equal to the sum of the tunnel structure elevation and 0.5 m. The load-reducing layer is formed by the foam lightweight concrete, has the characteristics of flexible construction, good fluidity, low density and good load-reducing effect, and can effectively reduce the influence of load on the underground structure and prolong the service life of the underground structure.
本发明公开了一种用泡沫轻质混凝土作为基坑回填材料的施工方法，该方法步骤如下：现场勘察及坡面处理，结合地勘资料、设计要求及经济性进行泡沫轻质混凝土回填料配比试验，确定泡沫轻质混凝土配合比，根据施工工作面规模及施工人员配备情况，确定施工段长度及浇筑层厚度，根据设计资料，若上覆构筑物，构筑物顶面标高减结构层厚度即为回填高程，且满足大于等于隧道结构高程加0.5m，若无上覆构筑物，则按地面高程减0.7m，且满足大于等于隧道结构高程加0.5m。本发明采用的泡沫轻质混凝土形成减荷层，具有施工灵活、流动性好、密度低、减荷效果好的特点，可有效降低荷载对地下结构的影响，延长地下结构使用年限。
Construction method using foam lightweight concrete as foundation pit backfill material
一种用泡沫轻质混凝土作为基坑回填材料的施工方法
HU ZHONGJING (Autor:in) / WANG QINGBIAO (Autor:in) / SHI ZHENYUE (Autor:in) / YANG SHUO (Autor:in)
17.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method of foam concrete backfill embankment in karst area
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023