The utility model relates to the field of cantilever construction of continuous beams, in particular to a load balancing adjustment device for cantilever construction of concrete continuous beams. On the main beam bearing platform, the temporary buttress is set on both sides of the main beam pier, the upper end of the main beam pier body is loaded with the beam body, and the finishing rolling screw steel is embedded between the main beam bearing platform and the beam body between the two sides of the main beam bearing platform. The beneficial effect of the utility model is made by pre embedding the finishing rolling screw steel on the main pier bearing platform of the beam body and extending to the 0# block of the beam to form the passive balance device of the upper and lower drawing knots. It takes full advantage of the strong tensile characteristics of the steel thread steel, and passively participates in the balance adjustment of the T structure of the beam body, and forms the balance adjustment with the active balance adjustment device (temporary buttress). The unbalance load of the design value is counteracted by the temporary buttress, and the unbalanced load over the design value is passively offset by the refined rolling screw steel buried in the main beam bearing platform and the beam body, which greatly reduces the safety risk.
【技术实现步骤摘要】
一种混凝土连续梁悬臂施工荷载平衡调节装置
本技术涉及连续梁悬臂施工领域,具体涉及一种混凝土连续梁悬臂浇筑施工荷载平衡调节装置。
技术介绍
连续梁悬臂施工法施工从20世纪60年代由前西德使用以来,发展至今,已成为修建大中跨径桥梁的一种有效施工手段。由于悬臂施工的技术含量高,设备材料投入少,施工方便,跨越不利地形能力强,故越来越多地在大跨径桥梁中应用。悬臂施工法是指梁部施工从桥中间墩处开始,按对称方式逐步接长,悬出梁段直至合龙为止的施工方法。悬臂浇筑施工法的基本程序有两步:一是浇筑0#块形成T构(指墩梁临时固结组成的结构立面形状);二是把桥体沿桥梁轴线分成若干节段,在已浇筑的0#块上利用挂篮对称在两侧就地浇筑混凝土的施工方法。随着悬臂浇筑施工阶段的不断加长,悬臂两端的不平衡荷载对T构形式产生的弯矩也随之加大。往往为了保证0#块T构形式的稳定性,需在T构两侧设置临时支墩,用来抵消悬臂施工工程中由不平衡荷载对T构产生的弯矩,从而使整个连续梁悬臂安全施工直至全桥合龙。在实际悬臂施工过程中,除了混凝土浇筑进度无法保持完全同步之外,悬臂两端产生不平衡荷载原因还有很多,例如:施工 ...
【技术保护点】
一种混凝土连续梁悬臂施工荷载平衡调节装置,在主梁承台(1)上位于主梁墩身(4)的两侧设置临时支墩(2),主梁墩身(4)上端承载梁体(5),其特征是在主梁承台(1)和梁体(5)之间位于主梁承台(1)两侧埋设精轧螺纹钢(3)。
【技术特征摘要】
1.一种混凝土连续梁悬臂施工荷载平衡调节装置,在主梁承台(1)上位于主梁墩身(4)的两侧设置临时支墩(2),主梁墩身(4)上端承载梁体(5),其特征是在主梁承台(1)和梁体(5)之间位于主梁承台(1)两侧埋设精轧螺纹钢(3)。2.根据权利要求1所述混凝土连续梁悬臂施工荷载平衡调节装置,其特征是主梁承台(1)两侧各...
【专利技术属性】
技术研发人员:梁学成,冉鹏,李正全,王红力,黄强,胡勇,谢旭智,翁斌,赵贵朋,
申请(专利权)人:中国水利水电第七工程局有限公司,
类型:新型
国别省市:四川,51
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