Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for underwater pile splicing of outer bottom sealing of steel casing
The invention relates to a construction method of a steel casing outer sealing bottom underwater pile splicing system. The construction method comprises the steps that a main trestle and a branch trestle are erected; an outer steel casing is vertically put down along the first stable hoop and the second stable hoop and then is welded and fixed; an inner protective cylinder is placed in the outer steel protective cylinder, and the outer steel protective cylinder is pulled out; a pile casing outer wall gravel sealing bottom is formed at the bottom of the inner steel pile casing; the pile head of the existing pile foundation is cut through a pile breaking drill bit of the intelligent pile cutting machine in the steel casing; and a reinforcement cage is hoisted, and pile body concrete is cast to the cast-in-place pile cast-in-place elevation. The steel casing hoop cantilever stabilizing device has the beneficial effects that the steel casing hoop cantilever stabilizing device ensures the descending perpendicularity of the outer steel casing, and meanwhile, the steel casing hoop cantilever stabilizing device serves as a fixing device of the outer steel casing, so that the stability in the punching process is improved; the outer side of the bottom of the inner steel casing is provided with a casing outer wall broken stone backfill sealing bottom, and the stability and watertightness are good; an intelligent pile cutting machine in a steel casing is adopted, and a micro jack and a pile breaking drill bit are made to reach the pile cutting position of an existing pile foundation pile head through a vertical moving air cylinder for construction.
本发明涉及一种钢护筒外封底水中接桩体系的施工方法，包括步骤：搭设主栈桥和支栈桥；沿第一稳固抱箍和第二稳固抱箍垂直下放外钢护筒后焊接固定；在外钢护筒内下放内护筒，将外钢护筒拔除；在内钢护筒底部形成护筒外壁碎石封底；通过钢护筒内智能截桩机的破桩钎头对已有桩基桩头截桩；吊放钢筋笼并灌注桩身混凝土至灌注桩灌注标高。本发明的有益效果是：钢护筒抱箍悬臂稳固装置保证外钢护筒下放的垂直度，同时作为外钢护筒的固定装置，提高冲孔的过程的稳固性；内钢护筒底部外侧设置护筒外壁碎石回填封底，稳固性和止水性好；采用钢护筒内智能截桩机，通过竖向移动气缸使微型千斤顶和破桩钎头到达已有桩基桩头的截桩位置进行施工。
Construction method for underwater pile splicing of outer bottom sealing of steel casing
The invention relates to a construction method of a steel casing outer sealing bottom underwater pile splicing system. The construction method comprises the steps that a main trestle and a branch trestle are erected; an outer steel casing is vertically put down along the first stable hoop and the second stable hoop and then is welded and fixed; an inner protective cylinder is placed in the outer steel protective cylinder, and the outer steel protective cylinder is pulled out; a pile casing outer wall gravel sealing bottom is formed at the bottom of the inner steel pile casing; the pile head of the existing pile foundation is cut through a pile breaking drill bit of the intelligent pile cutting machine in the steel casing; and a reinforcement cage is hoisted, and pile body concrete is cast to the cast-in-place pile cast-in-place elevation. The steel casing hoop cantilever stabilizing device has the beneficial effects that the steel casing hoop cantilever stabilizing device ensures the descending perpendicularity of the outer steel casing, and meanwhile, the steel casing hoop cantilever stabilizing device serves as a fixing device of the outer steel casing, so that the stability in the punching process is improved; the outer side of the bottom of the inner steel casing is provided with a casing outer wall broken stone backfill sealing bottom, and the stability and watertightness are good; an intelligent pile cutting machine in a steel casing is adopted, and a micro jack and a pile breaking drill bit are made to reach the pile cutting position of an existing pile foundation pile head through a vertical moving air cylinder for construction.
本发明涉及一种钢护筒外封底水中接桩体系的施工方法，包括步骤：搭设主栈桥和支栈桥；沿第一稳固抱箍和第二稳固抱箍垂直下放外钢护筒后焊接固定；在外钢护筒内下放内护筒，将外钢护筒拔除；在内钢护筒底部形成护筒外壁碎石封底；通过钢护筒内智能截桩机的破桩钎头对已有桩基桩头截桩；吊放钢筋笼并灌注桩身混凝土至灌注桩灌注标高。本发明的有益效果是：钢护筒抱箍悬臂稳固装置保证外钢护筒下放的垂直度，同时作为外钢护筒的固定装置，提高冲孔的过程的稳固性；内钢护筒底部外侧设置护筒外壁碎石回填封底，稳固性和止水性好；采用钢护筒内智能截桩机，通过竖向移动气缸使微型千斤顶和破桩钎头到达已有桩基桩头的截桩位置进行施工。
Construction method for underwater pile splicing of outer bottom sealing of steel casing
钢护筒外封底水中接桩的施工方法
WANG XINQUAN (Autor:in) / QUE YICHEN (Autor:in) / DIAO HONGGUO (Autor:in) / LI XIAO (Autor:in) / CUI YUNLIANG (Autor:in)
14.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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