The invention belongs to the technical field of the construction of the lower-pressure hanging basket. In order to solve the problem that the hanging basket can not be moved in place at one time and positioned accurately and quickly during the construction of the closure section of the lower-pressure hanging basket, the invention provides a construction method suitable for the quick positioning of the closure section of the lower-pressure hanging basket, which is continuous after the completion of the casting construction. After the beam section, the sliding groove is used to move the undercarriage forward as a whole, and then the closure section is constructed, and the sliding groove is fixed on the surface of the poured continuous beam; the main truss of the undercarriage is provided with a running wheel close to the bottom of the flange plate of the continuous beam body, and two sets of running wheels are arranged on both sides of the rear and upper beams of the undercarriage, which can be arranged along the sliding groove direction. Front sliding seat. At the same time, a suspension bottom formwork system is added to the front and bottom crossbeams of the undercarriage. The suspension bottom formwork system is suspended directly by the main truss through the pre-buried holes, and the front and upper crossbeams can be dismantled separately. The construction of the closure section can be completed at one time without dismantling the bottom formwork system of the undercarriage.
【技术实现步骤摘要】
一种适用下承式挂篮合拢段快速定位的施工方法
本专利技术型属于下承压式挂篮施工的
,具体涉及一种适用下承式挂篮合拢段快速定位的施工方法。
技术介绍
挂篮悬臂浇筑施工又称迪维达克施工,因其采用挂篮施工结构简单、受力合理及一次移动到位,无需搭设支架不妨碍桥下净空及正常交通等优点使得悬臂浇筑法应用的最为广泛。挂篮作为悬灌法施工的主要设备已发展为众多种类,常见的以菱形、三角形挂篮为主,均为上承式挂篮结构原理,就目前挂篮在连续梁施工中的应用来说,下承式挂篮的使用极为少见。下承式挂篮底模、内模悬吊系统通过在主桁架前端上方设置横梁进行调整固定,该横梁位置高度与梁体顶板基本一致,在合拢段施工时,横梁必须拆除后挂篮才能前移,横梁拆除时底模系统也随之拆除,合拢段模板再次组装费时费力、精确定位难度加大。上承式挂篮通过调整外挂横梁精轧螺纹钢对侧模进行定位,而下承式挂篮只通过调整后上横梁锚固点及主桁架后支点就可以对挂篮侧模进行精确定位。如何解决挂篮一次性合拢及缩短模板精确快速定位时间成为挂篮设计需解决的问题。
技术实现思路
本专利技术型是为了解决下承式挂篮合拢段施工时,挂篮不能一次性移动到位并精确快速定位这一问题,本专利技术提供了一种合拢段施工改进方法、一种挂篮快速定位辅助装置,解决现有挂篮合拢段施工时前上横梁必须拆除导致底模系统随之拆除、侧模定位及走行速度慢的问题,达到加快挂篮定位进度,提高连续梁施工工效,同时降低挂篮因杆件拆除存在坠落、挂篮倾覆的安全风险及因定位慢而影响工效的问题。本专利技术采用如下技术方案:一种适用下承式挂篮合拢段快速定位的施工方法,在浇筑施工完相邻两段连续梁 ...
【技术保护点】
1.一种适用下承式挂篮合拢段快速定位的施工方法,其特征在于,在浇筑施工完相邻两段连续梁节后,利用滑槽对下承式挂篮进行整体前移,再进行合拢段施工,滑槽固定于已浇筑连续梁梁面;所述下承式挂篮的主桁架后端设有与连续梁梁体翼缘板底面密贴的行走轮,下承式挂篮的后上横梁两侧设置有两套能沿滑槽向前滑移的滑座。
【技术特征摘要】
1.一种适用下承式挂篮合拢段快速定位的施工方法,其特征在于,在浇筑施工完相邻两段连续梁节后,利用滑槽对下承式挂篮进行整体前移,再进行合拢段施工,滑槽固定于已浇筑连续梁梁面;所述下承式挂篮的主桁架后端设有与连续梁梁体翼缘板底面密贴的行走轮,下承式挂篮的后上横梁两侧设置有两套能沿滑槽向前滑移的滑座。2.根据权利要求1所述的适用下承式挂篮合拢段快速定位的施工方法,其特征在于,所述下承式挂篮主桁架端头、前上横梁相对应位置预埋孔洞均设有预埋孔洞,在下承式挂篮的前下横梁处增设悬吊底模系统,通过预埋孔洞使悬吊底模系统由主桁架直接悬吊,且前上横梁便可直接单独拆除,实现挂篮底模系统不拆除即可一次性完成合拢段施工。3.根据权利要求2所述的适用下承式挂篮合拢段快速定位的施工方法,其特征在于,下承式挂篮整体前移的过程为:前移滑槽到已浇筑完成段,并将滑槽用膨胀螺栓固定于已浇筑连续梁顶面...
【专利技术属性】
技术研发人员:侯利军,魏宏双,孙中华,邓世甲,许海峰,刘德智,
申请(专利权)人:中铁三局集团有限公司,中铁三局集团第六工程有限公司,
类型:发明
国别省市:山西,14
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