Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underneath pass type road culvert transition section foam light soil roadbed structure and construction method thereof
The invention provides an underneath pass type road culvert transition section foam light soil roadbed structure and a construction method thereof. The roadbed structure comprises a sand cushion layerlocated at a bottom of a roadbed, a concrete cushion layer is laid on the sand cushion layer, three parts of foam light soil with different densities are poured on the concrete cushion layer, and a layer of plain concrete is poured on a contact surface of the foam light soil and a ballast bed. Compared with a traditional filler roadbed, the foam light soil roadbed has advantages that self-weightis light and compressive strength is higher; roadbed bearing strength is improved, and a foundation settlement value caused by a generated additional stress is reduced; and rolling vibration is not needed in a construction process, modes of mechanical stirring and pumping pouring operation are adopted, a needed operation area is small, engineering problems that an underneath pass type transition section construction site is limited, large equipment cannot enter a site, and roadbed rolling is not compact can be solved, vertical slope finishing can be achieved, a land acquisition area is reduced, cultivated lands are protected, and construction cost is saved.
本发明提供了一种下穿式路涵过渡段泡沫轻质土路基结构及其施工方法，包括位于路基底部的砂垫层，所述砂垫层上方铺设有混凝土垫层，混凝土垫层上浇筑有三部分不同密度的泡沫轻质土，泡沫轻质土与道床接触面上浇筑有一层素混凝土；该泡沫轻质土路基与传统填料路基相比，自重轻但抗压强度更高，路基承载强度得到提高，产生的附加应力所引起的地基沉降值减少，施工时无须碾压振动，采用机械搅拌，泵送浇筑作业的方式，所需作业面积较少，可解决下穿式过渡段施工场地受限，大型设备无法进场，路基碾压不实的工程问题，并且可垂直收坡，减少征地面积，保护耕地，节省施工费用。
Underneath pass type road culvert transition section foam light soil roadbed structure and construction method thereof
The invention provides an underneath pass type road culvert transition section foam light soil roadbed structure and a construction method thereof. The roadbed structure comprises a sand cushion layerlocated at a bottom of a roadbed, a concrete cushion layer is laid on the sand cushion layer, three parts of foam light soil with different densities are poured on the concrete cushion layer, and a layer of plain concrete is poured on a contact surface of the foam light soil and a ballast bed. Compared with a traditional filler roadbed, the foam light soil roadbed has advantages that self-weightis light and compressive strength is higher; roadbed bearing strength is improved, and a foundation settlement value caused by a generated additional stress is reduced; and rolling vibration is not needed in a construction process, modes of mechanical stirring and pumping pouring operation are adopted, a needed operation area is small, engineering problems that an underneath pass type transition section construction site is limited, large equipment cannot enter a site, and roadbed rolling is not compact can be solved, vertical slope finishing can be achieved, a land acquisition area is reduced, cultivated lands are protected, and construction cost is saved.
本发明提供了一种下穿式路涵过渡段泡沫轻质土路基结构及其施工方法，包括位于路基底部的砂垫层，所述砂垫层上方铺设有混凝土垫层，混凝土垫层上浇筑有三部分不同密度的泡沫轻质土，泡沫轻质土与道床接触面上浇筑有一层素混凝土；该泡沫轻质土路基与传统填料路基相比，自重轻但抗压强度更高，路基承载强度得到提高，产生的附加应力所引起的地基沉降值减少，施工时无须碾压振动，采用机械搅拌，泵送浇筑作业的方式，所需作业面积较少，可解决下穿式过渡段施工场地受限，大型设备无法进场，路基碾压不实的工程问题，并且可垂直收坡，减少征地面积，保护耕地，节省施工费用。
Underneath pass type road culvert transition section foam light soil roadbed structure and construction method thereof
一种下穿式路涵过渡段泡沫轻质土路基结构及其施工方法
LIU BINBIN (Autor:in) / LONG JUNXIAN (Autor:in) / YU YONGJIN (Autor:in) / ZHANG FENG (Autor:in) / ZENG ZHIJIAO (Autor:in) / DING YUEFAN (Autor:in) / ZHU YONGFENG (Autor:in) / HUANG JUNJIE (Autor:in) / LI WEIDONG (Autor:in) / WANG GUANGLI (Autor:in)
25.08.2020
Patent
Elektronische Ressource
Chinesisch
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