Title:
CONSTRUCTION METHOD FOR UNDERGROUND PRESTRESSED SUPPORTING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/196450
Kind Code:
A1
Abstract:
Disclosed is a construction method for an underground prestressed supporting structure, comprising the steps of: (1) sinking a soldier pile carrying an anchor cable; (2) constructing a top horizontal support; (3) excavating a foundation pit until a set depth for primary excavation is reached, mounting N enclosing purlins within the range, and tensioning the anchor cable to press same against the N enclosing purlins; (4) excavating the foundation pit, mounting the (N+1)th enclosing purlin, and pressing the anchor cable against the (N+1)th enclosing purlin; (5) completing mounting of all enclosing purlins, and casting a bottom plate; (6) removing the enclosing purlins below the K-th top plate, and constructing the K-th top plate; (7) removing the enclosing purlins below the (K-1)th top plate, and constructing the (K-1)th top plate; (8) completing construction of top plates below the Nth enclosing purlin; and (9) releasing the tensioning on the anchor cable, and constructing top plates. According to the present application, supporting parts are replaced with enclosing purlins, the enclosing purlins serve as force transfer parts to form a prestressed soldier pile, and the enclosing purlins and the soldier pipe are formed as one piece, thereby guaranteeing the integrity and stability of a foundation pit supporting system.
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Inventors:
WANG TAO (CN)
LI RENMIN (CN)
WANG JIANLAN (CN)
LI RENMIN (CN)
WANG JIANLAN (CN)
Application Number:
PCT/CN2020/102444
Publication Date:
October 07, 2021
Filing Date:
July 16, 2020
Export Citation:
Assignee:
JIANGSU SOUTH&EAST GEOTECH TECH CO LTD (CN)
International Classes:
E02D17/04
Foreign References:
| CN105133623A | 2015-12-09 | |||
| CN205954635U | 2017-02-15 | |||
| CN207314353U | 2018-05-04 | |||
| CN102767186A | 2012-11-07 | |||
| KR100711711B1 | 2007-04-25 | |||
| KR20110003815A | 2011-01-13 |
Attorney, Agent or Firm:
NANJING RUIZHIBO INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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