WO2020215651A1 - Dispositif de guidage de limitation pour construction de lancement incrémentiel de poutre caisson d'acier et procédé de construction de limitation - Google Patents

Dispositif de guidage de limitation pour construction de lancement incrémentiel de poutre caisson d'acier et procédé de construction de limitation Download PDF

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Publication number
WO2020215651A1
WO2020215651A1 PCT/CN2019/115004 CN2019115004W WO2020215651A1 WO 2020215651 A1 WO2020215651 A1 WO 2020215651A1 CN 2019115004 W CN2019115004 W CN 2019115004W WO 2020215651 A1 WO2020215651 A1 WO 2020215651A1
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WO
WIPO (PCT)
Prior art keywords
box girder
steel box
roller
support frame
limit guide
Prior art date
Application number
PCT/CN2019/115004
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English (en)
Chinese (zh)
Inventor
王兴阔
白宾
王殿学
王绍义
张景伟
辛红星
王金涛
Original Assignee
山东省路桥集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山东省路桥集团有限公司 filed Critical 山东省路桥集团有限公司
Publication of WO2020215651A1 publication Critical patent/WO2020215651A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal

Definitions

  • the invention relates to a limit guide device and a limit construction method for steel box girder pushing construction, belonging to the technical field of steel structure bridge construction.
  • the existing steel box girder installation methods include bracket installation, cantilever assembly and jacking installation.
  • the bracket installation refers to the installation of brackets at the bridge position, and the use of ground or water lifting equipment such as tower cranes, car cranes or floating cranes
  • the box girder is hoisted in place section by section. This construction scheme is simple and reliable. After the steel box girder is in place, no major adjustments are required. It is suitable for land or water environments where the site under the bridge is good and it is convenient to erect the support. Projects that require traffic opening across the line are not applicable; cantilever assembly refers to the installation of steel box girder using a bridge deck crane that can move on the steel bridge deck. Each section of steel box girder is transported under the bridge by a beam truck, etc.
  • the surface crane is lifted into place. After the welding and reinforcement, the bridge surface crane moves forward to install the next section.
  • This construction scheme is mostly used for cable-stayed bridges with relatively large spans and small horizontal curves.
  • Bridge construction is not applicable; the steel box girder pushing method refers to the construction method in which the beam body is assembled section by section at the bridge head and longitudinally pushed with a jack to make the beam body pass through the temporary sliding bearing surface of each pier or partial support. This method is suitable for large span continuous bridges with constant cross section, especially for valleys with complex environments under the bridge and projects that require cross-line traffic.
  • the limit mechanism of the jacking construction generally adopts the sliding friction form, which increases the longitudinal jacking construction resistance of the steel box girder, and needs to be equipped with a jacking cylinder with a large thrust, which not only increases the construction cost and reduces the construction efficiency.
  • the technical problem to be solved by the present invention is to provide a limit guide device for steel box girder pushing construction and a limit construction method.
  • a steel box girder pushing construction limit guide device is symmetrically arranged on both sides of the steel box girder. It includes a support frame, a lateral displacement fine-tuning mechanism and an upper limit guide mechanism; The displacement fine-tuning mechanism is arranged on the outside of the support frame to drive the support frame to move along the beam; the limit guide mechanism is located between the steel box girder and the support frame bracket, and each limit guide mechanism includes a roller, a roller frame and more than two lead screws The assembly, the roller is arranged on the roller frame, and the roller frame is connected to the support frame through the screw nut assembly.
  • the lateral displacement fine-tuning mechanism includes a hydraulic oil cylinder and a reaction seat.
  • the cylinder body of the hydraulic oil cylinder is connected with the reaction seat, and the cylinder rod of the hydraulic oil cylinder is connected with the support frame.
  • the support frame includes two inclined rods, a vertical rod and a cross rod.
  • One of the inclined rods, the vertical rod and the cross rod form a large triangular structure.
  • a diagonal rod connects the vertical rod and the cross rod at the same time to divide the large triangular structure into two small triangular structures.
  • the roller frame includes a bottom plate and two side plates arranged on the bottom plate, and the roller is connected to the two side plates through a pin.
  • a method of using the steel box girder to push the construction limit guide device for the steel box girder limit construction includes the following steps:
  • the structure is simple, safe and reliable: the whole is in the form of a tripod, the structure is simple and stable, safe and reliable;
  • the limit guide device has the function of fine adjustment of lateral displacement, which can adapt to the pushing construction of different flat curve radii and different angles of inclined web steel box girder.
  • Figure 1 is a cross-sectional view of the present invention
  • Figure 2 is a partial enlarged view 1 of the present invention
  • Figure 3 is a partial enlarged view 2 of the present invention.
  • Figure 4 is a longitudinal layout diagram of the present invention.
  • a steel box girder pushing construction limit guide device the steel box girder pushing construction limit guide device is symmetrically arranged on both sides of the steel box girder, which includes a support frame 2, a lateral displacement fine-tuning mechanism 3 and more than one Limit guide mechanism 4.
  • the support frame 2 includes two diagonal rods 2-1, a vertical rod 2-2 and a cross rod 2-3, of which one diagonal rod 2-1 and the vertical rod 2-2 and the cross rod 2- 3 forms a large triangular structure, and another diagonal rod 2-1 connects the vertical rod 2-2 and the cross rod 2-3 at the same time to divide the large triangular structure into two small triangular structures.
  • the lateral rigidity is improved, which can effectively resist the lateral force generated during the pushing construction of the steel box girder 1, and there are slot 2-4 and slot 2 under the crossbar 2-3. 4 can make the support frame 2 slide smoothly along the beam 6.
  • the lateral displacement fine-tuning mechanism 3 is arranged on the outside of the support frame 2 to drive the support frame 2 to move along the beam;
  • the lateral displacement fine-tuning mechanism 3 includes a hydraulic cylinder 3-1 and a reaction seat 3, and a reaction seat 3 -2 is welded to the beam 6 and fixed, the cylinder body of the hydraulic cylinder 3-1 is connected with the reaction seat 3, and the cylinder rod of the hydraulic cylinder 3-1 is connected with the support frame 2.
  • the lateral movement of the support frame 2 is driven by the expansion and contraction of the hydraulic cylinder 3-1, so as to fine-tune the displacement of the support frame 2.
  • the limit guide mechanism 4 is located on the steel box girder and the support frame bracket.
  • Each limit guide mechanism 4 includes a roller 4-1, a roller frame 4-3 and two or more screw nut components.
  • the roller frame includes a bottom plate. And the two side plates set on the bottom plate, the roller 4-1 is connected to the two side plates through the pin 4-2, the roller 4-1 is set on the roller frame 4-3, and the roller frame 4-3 passes through the screw 4-4 and
  • the screw nut 4-5 is connected to the support frame 2.
  • the steel box girder 1 generates rolling friction with the roller 4-1 during the forward push construction, which not only reduces the resistance in the push process but also acts as a lateral limit, so that the steel box girder always moves along the longitudinal movement track 5.
  • the shaft 4-2 is installed on the roller frame 4-3, and the extension distance of the roller 4-1 can be fine-tuned by adjusting the position of the screw nut 4-5 to adapt to the steel box girder 1 with inclined webs of different angles.
  • a method for using the steel box girder jacking construction limit guide device according to any one of claims 1 to 4 for steel box girder limit construction comprising the following steps:

Abstract

L'invention concerne un dispositif de guidage de limitation pour une construction de lancement incrémentiel de poutre caisson d'acier avec une conception rationnelle et un rendement élevé, et un procédé de construction de limitation. Selon le dispositif de guidage de limitation pour la construction de lancement incrémentiel de poutre caisson d'acier, des dispositifs de guidage de limitation pour la construction de lancement incrémentiel de poutre caisson d'acier sont disposés symétriquement sur deux côtés d'une poutre caisson d'acier, et comprennent un cadre de support, un mécanisme de réglage fin de déplacement latéral, et un ou plusieurs mécanismes de guidage de limitation. Le mécanisme de réglage fin de déplacement latéral est disposé sur un côté extérieur du cadre de support et est utilisé pour entraîner le cadre de support à se déplacer le long d'une poutre transversale; et les mécanismes de guidage de limitation sont situés entre la poutre caisson d'acier et le cadre de support, et chacun des mécanismes de guidage de limitation comprennent un rouleau, un cadre de rouleau et deux ou plusieurs assemblages vis-mère et écrou, le rouleau étant disposé sur le cadre de rouleau, et le cadre de rouleau étant relié au cadre de support par l'intermédiaire des assemblages vis-mère et écrou.
PCT/CN2019/115004 2019-04-23 2019-11-01 Dispositif de guidage de limitation pour construction de lancement incrémentiel de poutre caisson d'acier et procédé de construction de limitation WO2020215651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910327037.8A CN109958066A (zh) 2019-04-23 2019-04-23 钢箱梁顶推施工限位导向装置及限位施工方法
CN201910327037.8 2019-04-23

Publications (1)

Publication Number Publication Date
WO2020215651A1 true WO2020215651A1 (fr) 2020-10-29

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PCT/CN2019/115004 WO2020215651A1 (fr) 2019-04-23 2019-11-01 Dispositif de guidage de limitation pour construction de lancement incrémentiel de poutre caisson d'acier et procédé de construction de limitation

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CN (1) CN109958066A (fr)
WO (1) WO2020215651A1 (fr)

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* Cited by examiner, † Cited by third party
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CN109958066A (zh) * 2019-04-23 2019-07-02 山东省路桥集团有限公司 钢箱梁顶推施工限位导向装置及限位施工方法
CN110424276A (zh) * 2019-08-30 2019-11-08 山东省路桥集团有限公司 基于bim技术的双曲线钢箱梁双向顶推施工方法
CN111169805A (zh) * 2019-10-18 2020-05-19 绍兴市城投建筑工业化制造有限公司 一种辅助盖梁堆放的防侧倾装置
CN112281671A (zh) * 2020-11-03 2021-01-29 龙建路桥股份有限公司 一种钢箱梁顶推施工限位导向装置
CN114572829B (zh) * 2022-03-02 2023-01-06 振天建设集团有限公司 一种吊装定位辅助装置及辅助方法

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Publication number Priority date Publication date Assignee Title
US20090282626A1 (en) * 2008-01-28 2009-11-19 Powers James M Method of launching bridge spans in bridge construction
CN201420241Y (zh) * 2009-05-07 2010-03-10 中铁四局集团第四工程有限公司 钢箱梁动态液压纠偏系统
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