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1. 发明专利

JP4881555B2 How to build an underground structure 有权
公开(公告)号：JP4881555B2
公开(公告)日：2012-02-22
申请号：JP2004323236
申请日：2004-11-08
申请人：ジオスター株式会社 , 戸田建設株式会社
发明人：徳彦宇田川 , 修小林 , 弘明朝倉 , 均浅野 , 敬一渡辺 , 章神谷 , 誠請川 , 利幸辻
IPC分类号： E02D29/045 , E21D13/00
摘要： PROBLEM TO BE SOLVED: To provide an underground structure construction method according to which a ground occupation area necessary for construction work is minimized and a construction period is shortened, to thereby suppress an influence on the environmental circumstance to the minimum, and an occupation width taken up during the construction work is reduced, and energy saving etc. in the construction work are achieved. SOLUTION: The underground structure construction method is comprised of following three steps. In the first step, precast concrete side walls 2, 2 forming a main body structure are built in the ground at locations where both side wall portions are to be erected, and a shallow ground portion between the precast concrete side walls 2, 2 is excavated and removed. Thereafter a precast concrete top slab 4 forming the main body structure is extended between the precast concrete side walls 2, 2, and then the excavated portion is back-filled, to thereby antecedently complete the shallow portion above the top slab. In the second step, excavation is carried out in a ground portion enclosed by the precast concrete side walls 2, 2 and the precast concrete top slab 4, which is deeper than the top slab, and finally excavation is carried out in a ground portion down to a depth at which a bottom slab 5 is constructed. In the third step, concrete is placed in a bottom slab construction area, and unitary combination of the bottom slab with the precast concrete side walls 2 is achieved. COPYRIGHT: (C)2006,JPO&NCIPI

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