The invention relates to a supporting structure and a construction method of a low and low cast-in-place cover beam, which comprises a concrete cushion, a sand box, a plastic film and a bottom formwork arranged in turn from bottom to top. The sand box comprises a frame, a pull bolt and a fine sand filler, the frame comprises two longitudinal frame bars and two transverse frame bars, and the corresponding positions of the two longitudinal frame bars are respectively provided with a plurality of through holes, and the pull bolt comprises two ends which are provided with bolts The opposite pull screw and two nuts of the grain part, the opposite pull screw runs through the frame and its thread part extends out of the longitudinal frame strip through the through hole, the nut is sleeved on the thread part and tightened until the nut is tightly pressed on the longitudinal frame strip, the fine sand filler fills the inner cavity of the frame, the top surface of the fine sand filler is flush with the top surface of the frame, the plastic film is covered on the top surface of the sand box, the bottom formwork is set on the plastic film, and the cover beam is poured On the bottom formwork. The invention can construct a low cast-in-place cover beam in a narrow space, which has little disturbance to the soil below, simple construction and disassembly operation of the support structure, and does not affect the safety of the structure under the soil.
【技术实现步骤摘要】
一种低矮现浇盖梁的支撑结构及其施工方法
本专利技术涉及桥梁施工领域,更具体地说,涉及一种低矮现浇盖梁的支撑结构及其施工方法。
技术介绍
目前,常规进行现浇盖梁需要在搭建现浇盖梁支架,而且现浇盖梁支架需要占用较大的施工空间,则需要的土方开挖量大,扰动原状土,对土体下方的结构影响较大。
技术实现思路
本专利技术所要解决的问题在于,提供一种低矮现浇盖梁的支撑结构及其施工方法,能在狭小的空间内施工低矮现浇盖梁,不受施工空间的影响,对下方土体扰动小,支撑结构的搭建与拆卸操作简单,不影响土体下方结构的安全。为了解决上述技术问题,本专利技术提供了一种低矮现浇盖梁的支撑结构,其包括自下而上依次设置的混凝土垫层、砂箱、塑料薄膜和底模板,所述砂箱包括框架、对拉螺栓和干燥的细砂填料,所述框架包括两纵框条和两横框条,所述纵框条与所述横框条固定连接且密封连接,两所述纵框条的对应位置分别开设有多个与所述对拉螺栓相匹配的通孔,所述通孔沿所述纵框条的长度方向等间距设置,所述对拉螺栓包括对拉螺杆和两螺母,所述对拉螺杆的两端均设有螺纹部,所述对拉螺杆贯穿所述框架且其螺纹部通过所述通孔伸出所述纵框条外,所 ...
【技术保护点】
1.一种低矮现浇盖梁的支撑结构,其特征在于,包括自下而上依次设置的混凝土垫层、砂箱、塑料薄膜和底模板,所述砂箱包括框架、对拉螺栓和干燥的细砂填料,所述框架包括两纵框条和两横框条,所述纵框条与所述横框条固定连接且密封连接,两所述纵框条的对应位置分别开设有多个与所述对拉螺栓相匹配的通孔,所述通孔沿所述纵框条的长度方向等间距设置,所述对拉螺栓包括对拉螺杆和两螺母,所述对拉螺杆的两端均设有螺纹部,所述对拉螺杆贯穿所述框架且其螺纹部通过所述通孔伸出所述纵框条外,所述螺母套设在所述螺纹部并拧紧至所述螺母压紧在所述纵框条上,所述框架的底面面积小于所述混凝土垫层的顶面面积,所述细砂填料填充 ...
【技术特征摘要】
1.一种低矮现浇盖梁的支撑结构,其特征在于,包括自下而上依次设置的混凝土垫层、砂箱、塑料薄膜和底模板,所述砂箱包括框架、对拉螺栓和干燥的细砂填料,所述框架包括两纵框条和两横框条,所述纵框条与所述横框条固定连接且密封连接,两所述纵框条的对应位置分别开设有多个与所述对拉螺栓相匹配的通孔,所述通孔沿所述纵框条的长度方向等间距设置,所述对拉螺栓包括对拉螺杆和两螺母,所述对拉螺杆的两端均设有螺纹部,所述对拉螺杆贯穿所述框架且其螺纹部通过所述通孔伸出所述纵框条外,所述螺母套设在所述螺纹部并拧紧至所述螺母压紧在所述纵框条上,所述框架的底面面积小于所述混凝土垫层的顶面面积,所述细砂填料填充满所述框架的内腔,且所述细砂填料为压紧状态,所述细砂填料的顶面与所述框架的顶面平齐,所述塑料薄膜覆盖在所述砂箱的顶面,所述底模板设置在所述塑料薄膜上,盖梁浇筑在所述底模板上。2.如权利要求1所述的低矮现浇盖梁的支撑结构,其特征在于,所述螺母与所述纵框条之间设有垫片。3.如权利要求2所述的低矮现浇盖梁的支撑结构,其特征在于,所述螺母与所述纵框条之间设有两个所述垫片。4.如权利要求1所述的低矮现浇盖梁的支撑结构,其特征在于,所述纵框条与所述横框条焊接固定。5.如权利要求1所述的低矮现浇盖梁的支撑结构,其特征在于,所述纵框条和所述横框条均为型钢。6.如权利要求1所述的低矮现浇盖梁的支撑结构,其特征在于,所述底模板由多块单元模板拼接组成,相邻的所述单元模板之间的拼缝位置上粘贴有透明胶。7.如权利要求6所述的低矮现浇盖梁的支撑结构,其特征在于,所述单元模板的宽度等于所述砂箱的净宽度,所有的所述单元模板的拼接总长度等于所述砂箱的净长度,所述底模板位于所述砂箱内的细砂的正上方。8.如权利要求1所述...
【专利技术属性】
技术研发人员:郭一贤,吴应军,何铭,陈建宁,颜苓,陈衡,
申请(专利权)人:广州市第三市政工程有限公司,
类型:发明
国别省市:广东,44
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