CN102733307A - Method for constructing cast-in-place beam falsework - Google Patents
Method for constructing cast-in-place beam falsework Download PDFInfo
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- CN102733307A CN102733307A CN2012101996449A CN201210199644A CN102733307A CN 102733307 A CN102733307 A CN 102733307A CN 2012101996449 A CN2012101996449 A CN 2012101996449A CN 201210199644 A CN201210199644 A CN 201210199644A CN 102733307 A CN102733307 A CN 102733307A
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Abstract
The invention belongs to the technical field of construction of cast-in-place beam falseworks in bridge engineering, particularly relates to a method for constructing a cast-in-place beam falsework, and aims to solve the problems of long construction period, high construction cost, resource waste and the like caused by construction with a falsework method after foundation treatment, which must be used in certain specific geological or construction environments. The method comprises the following steps of: manufacturing an assembled symmetrical inclined leg device; treating a soft foundation, and constructing a strip-type concrete foundation on the upper part of the soft foundation; and mounting the assembled symmetrical inclined leg device on the strip-type concrete foundation, and connecting a double-assembled section steel main beam, a bailey beam, a square timber and a bottom die on the top of an adjusting system, and adjacent steel pipe upright columns by using channel steel. The method has the advantages that the structure is flexible, resources are saved, the construction cost is reduced, a support is convenient to dismount and mount, the construction progress is accelerated, the range of foundation treatment can be reduced, and the construction cost and security risk in construction are reduced.
Description
Technical field
The invention belongs to the technical field of cast-in-place beam falsework construction in the bridge engineering, be specifically related to a kind of cast-in-place beam falsework construction method.
Background technology
At present, when construction railroad, highway cast-in-situ continuous beam, cast-in-place continuous rigid frame, all adopt the construction of full framing method or steel pipe falsework method.(as striding road, cross a river) under special circumstances perhaps in the soft base district, the full framing method can not satisfy field requirement, and this moment, the construction of steel pipe falsework method was comparatively general.And in some special geological or construction environment; As in Zhejiang, all there is very thick weak soil layer at coastal area such as Jiangsu, Guangdong and the bridge location place of crossing over rivers, bearing capacity is extremely low, adopts the construction of falsework method; Must handle ground, to guarantee the construction of major project.And in construction major project process, the intensity of falsework system and stability are the keys that whole construction course and quality of main body project guarantee, and then it then is the key of whole construction that the falsework ground is handled.Intensity and sedimentation that only guaranteed ground is handled meet the demands, and its strutting system could well guarantee the construction of major project.At present, using comparatively widely, foundation treatment mode comprises the processing of drill-pouring pile foundation, the processing of high-pressure rotary-spray pile foundation, the processing of steel pipe pile ground etc.No matter be any foundation treatment mode, all are very high parts of expense in the whole falsework system, all can cause construction cost to increase greatly, cause shortcomings such as the wasting of resources.
Summary of the invention
Goal of the invention of the present invention is in order to solve in some special geological or construction environment; Must adopt ground to handle back falsework method construction and bring long in time limit; Construction cost is big; Problems such as the wasting of resources, thus reach the purpose that the ground processing was handled or do not carried out to the ground when as far as possible reducing the construction of falsework method, a kind of cast-in-place beam falsework construction method is provided.
The present invention adopts following technical scheme to realize:
A kind of cast-in-place beam falsework construction method, its step is following:
1), the assembling symmetry of completing battered leg device,
Described assembling symmetry battered leg device comprises primary structure member, connected system and some groups of regulating systems,
Described regulating system comprises movable head and is placed in the fin steel tube that adds outside the movable head that described ribbing steel duct is provided with the adjustable track of plank frame longitudinally, adds the fin steel tube bottom and is welded to connect flange; Described movable head comprise the top steel plate with and the adjustable column that connects of bottom; Have on the adjustable column and can the chute of slip relatively take place with adjustable track; The chute bottom is provided with limiting plate, is equipped with the adjusting gag that can fill in the wedge shape in it between adjustable track top and the chute
Described primary structure member comprises the horizontal shaped steel that connects each regulating system and supports each regulating system and vertical steel pipe of horizontal shaped steel; Laterally also be provided with the battered leg shaped steel that connects the two between the lower end of the outer end of shaped steel and vertical steel pipe; The connection of each several part all adopts flange to be connected with bolt
2), treatment of soft foundation, soft then basic top construction strip concrete foundation, the scope of treatment of soft foundation and strip concrete foundation satisfy the scope of vertical steel pipe of assembling symmetry battered leg device;
3), assembling symmetry battered leg device is installed on strip concrete foundation,
A, basis be absolute altitude on the spot, connects the steel pipe post of Len req in the bottom of vertical steel pipe, and the battered leg device integral body that connects steel pipe post is winched to construction area, the steel pipe bottom is connected on the concrete foundation,
B, according to absolute altitude measuring and calculating, the control and regulation gag is filled in the degree of depth within adjustable track and the chute, reaches the absolute altitude requirement;
4), at the regulating system top Two bors d's oeuveres shaped steel main beam, Bei Leiliang, the lumps of wood and bed die,
5), adopt channel-section steel to connect as connecting rod member between the adjacent steel pipe post, the form that is provided with that connects rod member is the bridging form.
The present invention has following beneficial effect: 1. adopted assembling symmetry battered leg member, its structure is flexible, can be according to the height adjustment steel pipe post height of practice of construction falsework; 2. adopt symmetrical battered leg structure, can reuse the temporary structure material, practiced thrift resource, reduced construction cost; 3. this method adopts adjustable assembling symmetry battered leg, and its support easy accessibility has been accelerated construction speed; When 4. this method is used for cast-in-situ continuous beam and continuous rigid frame, can reduce the scope that ground is handled, reduce the quantity of falsework central post, reduce the model of top distribution beam, reduce the security risk in construction cost and the construction; When this method was used for outstanding filling continuous beam 0# piece and cast-in-place section construction of end bay, the cushion cap of major project capable of using can not carry out ground and handle, and has reduced construction cost, has accelerated speed of application.
Description of drawings
Fig. 1 is the structural representation of assembling symmetry battered leg device,
Fig. 2 is the structural representation of regulating system,
Fig. 3 is the structural representation of movable head,
Fig. 4 is the structural representation that adds fin steel tube,
Fig. 5 is used for falsework cast-in-situ continuous beam, Steel Continuous structure schematic cross-sectional view for the present invention,
Fig. 6 is existing falsework cast-in-situ continuous beam, Steel Continuous structure schematic cross-sectional view,
Fig. 7 is used for outstanding cast-in-place section construction of the continuous beam end bay schematic cross-sectional view of irritating for the present invention,
Among the figure: 1-adds fin steel tube, 2-adjustable track, 3-deep floor, 4-flange; 5-top steel plate, the 6-adjustable column, the 7-chute, 8-regulates gag; The horizontal shaped steel of 9-, the vertical steel pipe of 10-, 11-battered leg shaped steel, 12-steel pipe post; 13-ground process range, 14-connects rod member, 15-shaped steel main beam, 16-Bei Leiliang.
The specific embodiment
Be described further in conjunction with the specific embodiment of accompanying drawing this job practices.
The construction of assembling symmetry battered leg falsework is adopted in cast-in-situ continuous beam or the construction of continuous rigid frame beam falsework; Main span 32.6m; At span centre the interim basis of one row is set, on both sides cushion cap, span centre strip foundation, arranges steel pipe post assembling symmetry battered leg device, arrange Two bors d's oeuveres shaped steel main beam on it by design elevation; Adopt Bei Leiliang, on establish the lumps of wood and bed die.Described assembling symmetry battered leg device comprises primary structure member, connected system and some groups of regulating systems; Described regulating system comprises movable head and is placed in the fin steel tube that adds outside the movable head; Described ribbing steel duct is provided with the adjustable track of plank frame longitudinally, adds the fin steel tube bottom and is welded to connect flange; Described movable head comprise the top steel plate with and the adjustable column that connects of bottom; Have on the adjustable column and can the chute of slip relatively take place with adjustable track; The chute bottom is provided with limiting plate; The adjusting gag that to fill in the wedge shape in it is equipped with between adjustable track top and the chute; Described primary structure member comprises the horizontal shaped steel that connects each regulating system and supports each regulating system and vertical steel pipe of horizontal shaped steel that laterally also be provided with the battered leg that connects the two between the lower end of the outer end of shaped steel and vertical steel pipe, the connection of each several part all adopts flange to be connected with bolt.
The specific embodiment is:
1, construction of soft soil treatment carries out treatment of soft foundation by drilled pile, is undertaken by conventional form of construction work;
2, top bar shaped foundation construction connects into an integral body with strip foundation and drilled pile, and the strip foundation construction is constructed by usual manner, and its size inspection is calculated and confirmed;
3, cushion cap and bar base upper steel tube column assembling symmetry battered leg construction is at first by the requirement of assembling symmetry battered leg plan, regulating system, primary structure member and the connected system of processing and fabricating symmetry battered leg device.Be transported to the job site then; At the construction area original ground battered leg partly is assembled into an integral body, promptly vertical special steel pipe, cross bar i iron, battered leg i iron connect as a whole, then according to absolute altitude on the spot; Assembling falsework structure bottom steel pipe post; The artificial crane that cooperates winches to construction area with symmetrical battered leg device integral body, carries out the bottom and connects, and carries out the connection of top regulating system after finishing.Wherein, the top regulating system has been carried out as a whole when dispatching from the factory, and need not on-site consolidation.After treating that above all process steps is accomplished,, rationally utilize the adjustment gag to carry out the adjustment of last absolute altitude, finally reach the requirement of falsework system main body construction according to the absolute altitude measuring and calculating.Assembling symmetry battered leg design factors, size and size draw by structural calculation.
4, top Two bors d's oeuveres H shaped steel crossbeam, shellfish thunder frame longeron, the lumps of wood, bed die etc. all by the conventional method construction, are accomplished the construction of whole falsework structure at last, finally carry out the continuous beam main structure construction and get final product.
5, for guaranteeing the stability of whole falsework system, after steel pipe post and the construction of battered leg device finish, between this, adopt 10 channel-section steels to connect as connecting rod member, the form of setting is the bridging form.
When 6, the present invention is used for cast-in-situ continuous beam and continuous rigid frame; The scope that the scope of ground processing and strip concrete foundation only need satisfy steel pipe post under the battered leg device of both sides gets final product; Because the battered leg device is the overhanging design of bracket; Little when then the more common steel pipe post falsework of the range size of processing of bottom ground and strip concrete foundation is constructed, specifically see Fig. 5,6.
When 7, the present invention is used for outstanding filling continuous beam 0# piece and cast-in-place section construction of end bay; The cushion cap of major project capable of using; The sponson of battered leg device can satisfy cast-in-place section sponson concrete construction of most of end bay, and Fig. 7 is specifically seen in ground processing that more common steel pipe post falsework construction is less.
When the present invention is used for cast-in-situ continuous beam and continuous rigid frame, reduce the scope that ground is handled, reduced the quantity of falsework central post, reduced the model of top distribution beam, reduced the security risk in construction cost and the construction; When this method was used for outstanding filling continuous beam 0# piece and cast-in-place section construction of end bay, falsework part job practices was the same, in most of engineering; The cushion cap of major project capable of using does not carry out ground and handles, and can satisfy construction requirement yet; Thereby reduced construction cost, accelerated speed of application.In this job practices, assembling symmetry battered leg device can be confirmed its model, size according to the practice of construction environment, and industrial machine-shaping, has guaranteed the quality of structure, and its bearing capacity satisfies construction requirement, can well be cast-in-place beam construction service.
Claims (1)
1. cast-in-place beam falsework construction method, its step is following:
1), the assembling symmetry of completing battered leg device,
Described assembling symmetry battered leg device comprises primary structure member, connected system and some groups of regulating systems,
Described regulating system comprises movable head and is placed in and add fin steel tube (1) outside the movable head that described fin steel tube (1) the set inside adjustable track of plank frame (2) longitudinally that adds adds fin steel tube (1) bottom and is welded to connect flange (4); Described movable head comprise top steel plate (5) with and the adjustable column (6) that connects of bottom; Have on the adjustable column (6) and can the chute (7) of slip relatively take place with adjustable track (2); Chute (7) bottom is provided with limiting plate; The adjusting gag (8) that to fill in the wedge shape in it is equipped with between adjustable track (2) top and the chute (7)
Described primary structure member comprises the horizontal shaped steel (9) that connects each regulating system and supports each regulating system and vertical steel pipe (10) of horizontal shaped steel; Laterally also be provided with the battered leg shaped steel (11) that connects the two between the lower end of the outer end of shaped steel (9) and vertical steel pipe (10); The connection of each several part all adopts flange to be connected with bolt
2), treatment of soft foundation, soft then basic top construction strip concrete foundation, the scope of treatment of soft foundation and strip concrete foundation satisfy the scope of vertical steel pipe of assembling symmetry battered leg device;
3), assembling symmetry battered leg device is installed on strip concrete foundation,
A, basis be absolute altitude on the spot, connects the steel pipe post (12) of Len req in the bottom of vertical steel pipe, and the battered leg device integral body that connects steel pipe post is winched to construction area, the steel pipe bottom is connected on the concrete foundation,
B, according to absolute altitude measuring and calculating, the control and regulation gag is filled in the degree of depth within adjustable track and the chute, reaches the absolute altitude requirement;
4), at the regulating system top Two bors d's oeuveres shaped steel main beam (15), Bei Leiliang (16), the lumps of wood and bed die,
5), adopt channel-section steel to connect as connecting rod member (14) between the adjacent steel pipe post (12), the form that is provided with that connects rod member (14) is the bridging form.
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| CN201210199644.9A CN102733307B (en) | 2012-06-18 | 2012-06-18 | Method for constructing cast-in-place beam falsework |
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| CN201210199644.9A CN102733307B (en) | 2012-06-18 | 2012-06-18 | Method for constructing cast-in-place beam falsework |
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Cited By (6)
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| CN104652288A (en) * | 2015-03-06 | 2015-05-27 | 中铁十六局集团第二工程有限公司 | Construction system of cast-in-situ large-tonnage box girder for soft soil foundation and construction method |
| CN105839539A (en) * | 2016-04-29 | 2016-08-10 | 贵州桥梁建设集团有限责任公司 | Rigid frame bridge zero section support and construction method thereof |
| CN108978477A (en) * | 2018-07-27 | 2018-12-11 | 武汉市盘龙明达建筑有限公司 | A kind of cast-in-situ box girder shuttering supporting body assembly technology |
| CN110409320A (en) * | 2019-08-21 | 2019-11-05 | 广西路建工程集团有限公司 | A kind of the concrete cast-in-situ bracket and its construction method of adjustable slope |
| CN110565526A (en) * | 2019-07-29 | 2019-12-13 | 南昌大学 | Conveniently-disassembled side-span cast-in-place support suitable for bridge and construction method |
| CN114718219A (en) * | 2022-04-06 | 2022-07-08 | 河南方元建筑工程有限公司 | Anti-seismic light steel structure house building |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114718219A (en) * | 2022-04-06 | 2022-07-08 | 河南方元建筑工程有限公司 | Anti-seismic light steel structure house building |
| CN114718219B (en) * | 2022-04-06 | 2024-02-13 | 河南方元建筑工程有限公司 | Building construction with shock-resistant lightweight steel structure |
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| CN102733307B (en) | 2014-09-03 |
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