CN103266567A - Steel truss cantilever support and implementation method thereof - Google Patents
Steel truss cantilever support and implementation method thereof Download PDFInfo
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- CN103266567A CN103266567A CN2013101531450A CN201310153145A CN103266567A CN 103266567 A CN103266567 A CN 103266567A CN 2013101531450 A CN2013101531450 A CN 2013101531450A CN 201310153145 A CN201310153145 A CN 201310153145A CN 103266567 A CN103266567 A CN 103266567A
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- encorbelmenting
- frame
- steel truss
- truss
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Abstract
The invention discloses a steel truss cantilever support and an implementation method thereof. The steel truss cantilever support comprises a plurality of support columns on a bearing platform. A steel truss is mounted at the top of each support column. A workbench is hung on the outer side of each support column and below the steel truss. Due to the fact that the steel truss is mounted at the top of each support column, the workbenches can be hung below the steel truss, pier form plates can be mounted on the workbenches, the weight of the form plates are hung and supported by the steel truss, compared with the method that a scaffold is set at the bottom of a full frame, the method that the workbenches are hung below the steel truss can reduce overall floor space, certain space can be reserved below the workbenches to allow vehicle passing, protecting devices can be mounted below the workbenches to guarantee safety, safety passing is achieved, floor space of scaffolds is reduced greatly, overall hanging time and demounting time of the steel truss cantilever support are much less than building time and demounting time of full frame scaffolds.
Description
Technical field
The present invention relates to a kind of aid of building operations, specifically refer to a kind of steel truss encorbelment support and its implementation.
Background technology
Pier stud namely is used for the bottom load-bearing thing of carrying superstructure thing in the civil engineering.It is circular that the pier stud cross section mostly is, and ellipse, square, shaped form, different in nature pier stud such as parabola shaped are also arranged.In engineerings such as bridges such as road bridge, railway bridge, sidewalk, overpass bridge, ramp bridge, overline bridge, it is important ingredient.
The bridge pier post construction of present viaduct or overpass bridge is normally carried out according to following operation: excavation pile construction, foundation platform construction, pier stud bottom are constructed, are set up scaffold, reinforcement construction operation, form removal after scaffold is installed bridge abutment moulding plate, the concreting of pier stud top, concrete curing, remove scaffold.This form of construction work is that building of scaffold carried out in the vacant lot around pier stud, and therefore, for having relatively high expectations of place, at road reconstruction or under the situation of assurance wagon flow passage, this form of construction work can not meet the demands.
Summary of the invention
The object of the present invention is to provide a kind of steel truss encorbelment support and its implementation, solve the big problem of needs, floor space that present bridge pier column form of construction work can not satisfy wagon flow, reach in construction, the purpose in track is provided for wagon flow.
Purpose of the present invention is achieved through the following technical solutions:
The steel truss support of encorbelmenting comprises a plurality of bearing posts that are fixed on the cushion cap, and the top of bearing post is equipped with steel truss, is hung with workbench below the steel truss in the bearing post outside.The present invention adopts and at cushion cap a plurality of bearing posts is set, and the mode that steel truss is installed at the bearing post top, make the steel truss below can lift workbench, the template of bridge pier can be installed on workbench, the weight of template is by the steel truss support of slinging, set up the mode of scaffold with respect to the bottom surface of full hall frame, steel truss hangs the form that lifts workbench can be so that whole floor space reduces, and, the workbench below has certain space, be used for the current of vehicle, in order to guarantee safety, can protective equipment be installed below workbench, reach the purpose of safe passing, this kind structure also is applicable to the position that construction environment is restricted, Chengdu Second Ring Road improvement project for example, one side of bridge pier needs subway work, and opposite side needs vehicle pass-through, can realize special needs by the mode that steel truss hoisting is made platform.
Described steel truss comprises the frame of encorbelmenting, the frame of encorbelmenting is installed in the bearing post top, at the frame of encorbelmenting truss strut is installed, and truss strut is positioned at directly over the bearing post, at the truss strut top draw frame is installed, the end of the frame of encorbelmenting is connected with the end of draw frame by diagonal member.Specifically, steel truss comprises two frameworks that are parallel to each other: the draw frame that is positioned at the top, be positioned at the frame of encorbelmenting of below, the frame of encorbelmenting is the rectangular frame that is welded by steel or shaped steel, draw frame also is the rectangular frame that is welded by steel or shaped steel, the length of draw frame is less than the length of the frame of encorbelmenting, a plurality of bearing posts all are connected on the cushion cap, it is perpendicular to cushion cap, bearing post forms matrix, and the length of the frame of encorbelmenting is greater than the length of matrix, and the frame of encorbelmenting is convenient to keep the weight balancing of both sides for being symmetrically distributed, the matrix that the size of draw frame and bearing post constitute is complementary, during installation, draw frame is positioned at directly over the matrix of bearing post formation, above the frame of encorbelmenting truss strut is installed, truss strut is corresponding one by one with bearing post, so, the vertical direction active force that truss strut is born can be directly passed to bearing post, reduces the effect of horizontal external, be conducive to whole stability and fastness, the effect of draw frame is to provide pulling force upwards for the frame of encorbelmenting; The edge of the feasible frame of encorbelmenting also is subjected to pulling force upwards, avoids crooked.
Between the frame of encorbelmenting is encorbelmented place middle part and draw frame end, also be provided with to add and hale bar, also be provided with interior reinforced pull rod in the middle part of the frame of encorbelmenting and between the draw frame end.Further, as a further improvement on the present invention, in order to improve draw frame to the drawknot effect of the frame of encorbelmenting, can hale bar encorbelmenting between frame and the draw frame to install to add, add the two ends of haling bar and be connected to the middle part that the frame of encorbelmenting is paid bearing post, simultaneously, in order to make the draw frame stress balance, also be provided with interior reinforced pull rod at the frame middle part of the whole frame of encorbelmenting and the drift angle place of draw frame.
Described workbench comprises operating platform, and operating platform is connected the steel truss below by a plurality of hanger bar.Further, adopt operating platform is suspended on mode on the steel truss, can overcome the inside configuration stress that causes because of hard link, reduce the possibility of distortion.
Described operating platform is provided with a plurality of height adjustment mechanisms.Further, as a further improvement on the present invention, in order to be applicable to different moulds, can a plurality of height adjustment mechanisms be set at operating platform, setting and change by height adjustment mechanism can be used in different templates, improve its practicality.
The encorbelment implementation method of support of steel truss may further comprise the steps:
(A) when the cushion cap pouring construction, built-in fitting is set, after cushion cap forms, Weld-supporting post on built-in fitting;
(B) carry out pier stud after the bearing post welding finishes and build, and built-in fitting is set;
(C) frame of encorbelmenting is installed at the bearing post top, the part of chord position in the bearing post both sides of encorbelmenting is symmetrical distribution;
(D) welded truss pillar on the frame of encorbelmenting, truss strut is corresponding one by one with bearing post;
(E) draw frame is installed at the truss strut top, and is encorbelmented to install to add between the frame at draw frame and hale bar and interior reinforced pull rod;
(F) fitting operation platform below the frame of encorbelmenting, operating platform is by a plurality of hanger bar;
The height of (G) lifting bridge abutment moulding plate, and adjustment hanger bar is with the position of height adjustment mechanism adjustment template;
(H) build bridge pier.
The present invention implements according to this step, can significantly reduce the floor space of scaffold, and the whole lifting time is less than building the time of full hall scaffold greatly, and in like manner, the time of its dismounting also is less than the dismounting time of scaffold greatly.
After step (G) is finished, between template and cushion cap, cross-brace is installed, between the curved portions of cross-brace and template, be connected the diagonal brace bar.
The present invention compared with prior art has following advantage and beneficial effect:
The 1 steel truss of the present invention support of encorbelmenting, the mode of steel truss is installed at the bearing post top, make the steel truss below can lift workbench, the template of bridge pier can be installed on workbench, the weight of template is by the steel truss support of slinging, set up the mode of scaffold with respect to the bottom surface of full hall frame, steel truss hangs the form that lifts workbench can be so that whole floor space reduces, and the workbench below has certain space, is used for the current of vehicle, in order to guarantee safety, can protective equipment be installed below workbench, reach the purpose of safe passing, this kind structure also is applicable to the position that construction environment is restricted;
The 2 steel trusss of the present invention support of encorbelmenting, the frame of encorbelmenting is the rectangular frame that is welded by steel or shaped steel, draw frame also is the rectangular frame that is welded by steel or shaped steel, the length of draw frame is less than the length of the frame of encorbelmenting, a plurality of bearing posts all are connected on the cushion cap, it is perpendicular to cushion cap, bearing post forms matrix, and the length of the frame of encorbelmenting is greater than the length of matrix, and the frame of encorbelmenting is for being symmetrically distributed, be convenient to keep the weight balancing of both sides, the matrix that the size of draw frame and bearing post constitute is complementary, during installation, draw frame is positioned at directly over the matrix of bearing post formation, above the frame of encorbelmenting truss strut is installed, truss strut is corresponding one by one with bearing post, so, the vertical direction active force that truss strut is born can be directly passed to bearing post, reduce the effect of horizontal external, be conducive to whole stability and fastness, the effect of draw frame is to provide pulling force upwards for the frame of encorbelmenting; The edge of the feasible frame of encorbelmenting also is subjected to pulling force upwards, avoids crooked;
The encorbelment implementation method of support of 3 steel trusss of the present invention can significantly reduce the floor space of scaffold, and the whole lifting time is less than building the time of full hall scaffold greatly, and in like manner, the time of its dismounting also is less than the dismounting time of scaffold greatly.
Description of drawings
Fig. 1 is structural representation of the present invention.
Mark and corresponding component title in the accompanying drawing:
1-cushion cap, 2-bearing post, the 3-frame of encorbelmenting, the 4-truss strut, 5-draw frame, 6-diagonal member, 7-add hales bar, reinforced pull rod in the 8-, 9-operating platform, 10-hanger bar, 11-height adjustment mechanism, 12-cross-brace, 13-diagonal brace bar, 14-junction plate, 15-built-in fitting.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, present embodiment is for the slow stifled Cheng Wenlu improvement project in smooth " two fast two penetrate two rings " project of protecting in the inner city of Chengdu Second Ring Road improvement project, be positioned at Chengdu Zheng Xi main artey of communications (Cheng Wenlu), project is certainly from the east of become warm overpass bridge in Second Ring Road, to the two clear South Roads of west longitude, the Jinsha station, blue or green sheep main road, West Road, the Qingjian River, the west terminates in three loop Su Po overpass bridge east sides, about 2.1 kilometers of total length, construction mileage K1+705-K1+920 (i.e. main pier 43#-48#), be positioned at center, former one-tenth temperature way road, with blue or green sheep main road (2.5 ring) right-angled intersection, No. four line Qingjian River of subway Zhong Lu subway station (with No. seven line transfer stops of subway) is sitting at this section; No. four line Qingjian River of subway Zhong Lu subway station (with No. seven line transfer stops of subway), head of a station 205.2m, Breadth Maximum 26m, four layers of station of foundation ditch depth capacity 28m(), between this engineering 46#, 47# pier, all the other segment base hole degree of depth 22m, subway is carrying out platform deep foundation pit construction, slope retaining etc. at present, forms unsettled space; The subway foundation pit supporting only has 2.3m apart from this engineering cushion cap limit, the bent cap construction can't be set up support routinely, be all municipal government's key project, through repeatedly consulting with relevant unit such as subway, all can not stop work and give way, according to actual conditions, a kind of steel truss that has adopted the present invention the to invent support of encorbelmenting, to finish according to following operation assembling with lower member: (A) when cushion cap 1 pouring construction, built-in fitting 15 is placed in the cushion cap 1, the quantity of built-in fitting is identical with the quantity of bearing post 2, and this built-in fitting 15 is according to rectangular arrangement, each such built-in fitting all adopts hook-shaped reinforcing bar to make, and is enclosed within the reinforcing bar of cushion cap 1, when cushion cap 1 build finish after after the concrete form removal, the surface of cushion cap 1 is chiseled, form the on-plane surface contact surface, Weld-supporting post 2 on built-in fitting 15 then, bearing post 2 is perpendicular to cushion cap 1; (B) carry out the sub-body reinforcement construction of bridge pier after bearing post 2 welding finish, after welding, colligation finish, Guan Mo, carry out the concreting of pier stud then, and built-in fitting 15 is set, built-in fitting 15 herein is cylinder or large-area steel construction piece, its large-area axial vertical with built-in fitting 15, be used for playing the purpose that increases contact area, be fixed in the reinforcing bar of bridge pier post; (C) frame 3 of encorbelmenting is installed at bearing post 2 tops, the frame 3 of encorbelmenting is welded into the framework that integral body is rectangle by shaped steel, can increase part pull bar or crossbeam therein; (D) welded truss pillar 4 on the frame 3 of encorbelmenting, truss strut 4 is corresponding one by one with bearing post 2; (E) draw frame 5 is installed at truss strut 4 tops, draw frame 5 is welded into the framework that integral body is rectangle by shaped steel, the frame 3 of encorbelmenting that is positioned at bearing post 2 both sides is symmetrical distribution, encorbelment between the frame 3 to install to add at draw frame 5 and hale bar 7 and interior reinforced pull rod 8, the connecting portion of steel truss, bearing post 2, truss strut 4 can increase junction plate 14, and junction plate 14 is as the connection carrier of ends; (F) fitting operation platform 9 below the frame 3 of encorbelmenting, operating platform 9 is by a plurality of hanger bar 10; The height of (G) lifting bridge abutment moulding plate, and adjustment hanger bar 10 is with the position of height adjustment mechanism 11 adjustment templates; Cross-brace 12 is installed between template and bridge pier post, and cross-brace 12 is fixed on the built-in fitting 15 in the bridge pier post, plays the effect of supplemental support, is connected diagonal brace bar 13 between the curved portions of cross-brace 12 and template; (H) the bridge pier concrete is built, and builds to finish form removal after the concrete setting, dismounting steel truss.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and any simple modification, the equivalent variations on every foundation technical spirit of the present invention above embodiment done all fall within protection scope of the present invention.
Claims (7)
1. the steel truss support of encorbelmenting, it is characterized in that: comprise a plurality of bearing posts (2) that are fixed on the cushion cap (1), the top of bearing post (2) is equipped with steel truss, is hung with workbench in the steel truss below in bearing post (2) outside.
2. the steel truss according to claim 1 support of encorbelmenting, it is characterized in that: described steel truss comprises the frame of encorbelmenting (3), the frame (3) of encorbelmenting is installed in bearing post (2) top, at the frame of encorbelmenting (3) truss strut (4) is installed, truss strut (4) is positioned at directly over the bearing post (2), at truss strut (4) top draw frame (5) is installed, the end of the frame of encorbelmenting (3) is connected with the end of draw frame (5) by diagonal member (6).
3. the steel truss according to claim 2 support of encorbelmenting, it is characterized in that: encorbelment also to be provided with to add between middle part, place and draw frame (5) end at the frame of encorbelmenting (3) and hale bar (7), between the frame of encorbelmenting (3) middle part and draw frame (5) end, also be provided with interior reinforced pull rod (8).
4. the steel truss according to claim 1 support of encorbelmenting, it is characterized in that: described workbench comprises operating platform (9), operating platform (9) is connected the steel truss below by a plurality of hanger bar (10).
5. the steel truss according to claim 4 support of encorbelmenting, it is characterized in that: described operating platform (9) is provided with a plurality of height adjustment mechanisms (11).
6. the steel truss implementation method of support of encorbelmenting is characterized in that, may further comprise the steps:
(A) built-in fitting is set when cushion cap (1) pouring construction, after cushion cap (1) forms, Weld-supporting post (2) on built-in fitting;
(B) carry out pier stud after bearing post (2) welding finishes and build, and built-in fitting is set;
(C) frame (3) of encorbelmenting is installed at bearing post (2) top, the part that the frame of encorbelmenting (3) is positioned at bearing post (2) both sides is symmetrical distribution;
(D) go up welded truss pillar (4) at the frame of encorbelmenting (3), truss strut (4) is corresponding one by one with bearing post (2);
(E) draw frame (5) is installed at truss strut (4) top, and between draw frame (5) and the frame of encorbelmenting (3), is installed to add and hale bar (7) and interior reinforced pull rod (8);
(F) at the frame of encorbelmenting (3) below fitting operation platform (9), operating platform (9) is by a plurality of hanger bar (10);
(G) lifting bridge abutment moulding plate, and the height of adjustment hanger bar (10) is with the position of height adjustment mechanism (11) adjustment template;
(H) build bridge pier.
7. the steel truss according to claim 6 implementation method of support of encorbelmenting, it is characterized in that: after step (G) is finished, between template and cushion cap (1), cross-brace (12) is installed, between the curved portions of cross-brace (12) and template, is connected diagonal brace bar (13).
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| CN201310153145.0A CN103266567B (en) | 2013-04-28 | 2013-04-28 | Steel truss cantilever supporting frame and its implementation |
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| CN201310153145.0A CN103266567B (en) | 2013-04-28 | 2013-04-28 | Steel truss cantilever supporting frame and its implementation |
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| CN103266567B CN103266567B (en) | 2016-03-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898835A (en) * | 2014-03-02 | 2014-07-02 | 葛洲坝集团第一工程有限公司 | Bridge back-pulling-resistant bearing construction support and construction method |
| CN104179121A (en) * | 2014-07-28 | 2014-12-03 | 中交一公局第三工程有限公司 | Movable formwork bracket four-stage-lifting self-assembling method |
| CN110306585A (en) * | 2019-07-03 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | A kind of cushion cap and cover board construction method |
| CN114892981A (en) * | 2022-05-29 | 2022-08-12 | 中国五冶集团有限公司 | Method for arranging double pull rods of profile steel main beam with ultra-long overhanging structure |
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| CN201560400U (en) * | 2009-09-17 | 2010-08-25 | 南昌市创新钢结构有限公司 | Stayed-cable hanging basket |
| CN102102342A (en) * | 2010-12-30 | 2011-06-22 | 广东省航盛建设集团有限公司 | Integral-structure type rear upper separator of diamond cradle |
| CN202766974U (en) * | 2012-06-27 | 2013-03-06 | 宏润建设集团股份有限公司 | Bent cap bearing frame without full framing |
| CN203174511U (en) * | 2013-04-28 | 2013-09-04 | 中国五冶集团有限公司 | Steel truss overhanging bracket |
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| JPH0959932A (en) * | 1995-08-22 | 1997-03-04 | P S Co Ltd | Construction method of column head of overhanging erection girder bridge |
| CN201560400U (en) * | 2009-09-17 | 2010-08-25 | 南昌市创新钢结构有限公司 | Stayed-cable hanging basket |
| CN102102342A (en) * | 2010-12-30 | 2011-06-22 | 广东省航盛建设集团有限公司 | Integral-structure type rear upper separator of diamond cradle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898835A (en) * | 2014-03-02 | 2014-07-02 | 葛洲坝集团第一工程有限公司 | Bridge back-pulling-resistant bearing construction support and construction method |
| CN104179121A (en) * | 2014-07-28 | 2014-12-03 | 中交一公局第三工程有限公司 | Movable formwork bracket four-stage-lifting self-assembling method |
| CN104179121B (en) * | 2014-07-28 | 2016-01-20 | 中交一公局第三工程有限公司 | A kind of mobile mould frame support bracket four promotes from assembling method |
| CN110306585A (en) * | 2019-07-03 | 2019-10-08 | 中铁二十五局集团第五工程有限公司 | A kind of cushion cap and cover board construction method |
| CN114892981A (en) * | 2022-05-29 | 2022-08-12 | 中国五冶集团有限公司 | Method for arranging double pull rods of profile steel main beam with ultra-long overhanging structure |
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| CN103266567B (en) | 2016-03-02 |
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