CN105625177A - Steel truss suspending support construction method - Google Patents
Steel truss suspending support construction method Download PDFInfo
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- CN105625177A CN105625177A CN201410581256.6A CN201410581256A CN105625177A CN 105625177 A CN105625177 A CN 105625177A CN 201410581256 A CN201410581256 A CN 201410581256A CN 105625177 A CN105625177 A CN 105625177A
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- steel truss
- scaffold
- suspension scaffold
- support column
- truss
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Abstract
The invention discloses a steel truss suspending support construction method, which comprises the steps of fixing multiple support posts on a bearing platform; installing a steel truss on the top of each support post; and suspending a workbench under the steel truss at the outboard of each support post. By installing the steel truss on the top of each support post, a workbench can be hoisted under the steel truss; a bridge pier template can be installed on the workbench; and weight of the template is supported by the hoisting of the steel truss. Compared with the way of installing a scaffold on the bottom of a full frame, the way of suspending a hoisting work bench under the steel truss makes the land occupation of the integral body decreased; and a certain space is left under the workbench for a vehicle pass. To guarantee safety, a protection facility can be installed under the workbench to realize safety pass. The land occupation area of the scaffold can be substantially reduced; also, the hoisting time of the integral body is much less than the time for building the full frame scaffold. Similarly, the dismounting time of the integral body is much less than the dismounting time of the scaffold.
Description
Technical field
The present invention relates to the aid of a kind of construction, specifically refer to a kind of steel truss cantilever supporting frame construction method.
Background technology
Pier stud, namely for carrying the bottom load-bearing material of superstructure in civil engineering. Pier stud cross section mostly is circular, also has ellipse, square, shaped form, the opposite sex pier stud such as parabola shaped. It the engineerings such as the bridges such as highway bridge, railway bridge, footpath, viaduct, ramp bridge, overline bridge is important ingredient.
The pier column construction of current overpass or viaduct usually carries out according to following operation: the construction of excavation pile construction, foundation platform, pier stud bottom are constructed, set up scaffold, reinforcement construction operation, form removal after installation bridge abutment moulding plate, the concreting of pier stud top, concrete curing on scaffold, removed scaffold. This form of construction work is building of the enterprising hand cradle of traveling far and wide in the vacant lot around pier stud, and therefore, the requirement for place is higher, and at road reconstruction or when ensureing wagon flow passage, this form of construction work can not meet requirement.
Summary of the invention
It is an object of the invention to provide a kind of steel truss cantilever supporting frame construction method, solve the problem that current bridge pier column form of construction work can not meet the needs of wagon flow, floor space is big, reach, while construction, to provide the purpose in track for wagon flow.
The purpose of the present invention is achieved through the following technical solutions:
Steel truss cantilever supporting frame construction method, including the multiple support columns being fixed on cushion cap, the top of support column is provided with steel truss, and the steel truss underhung outside support column has workbench. the present invention adopts and arranges multiple support column on cushion cap, and the mode of steel truss is installed at support column top, making below steel truss can slinger's station, the template of bridge pier can be installed on the table, the weight of template is sling support by steel truss, the mode of scaffold is set up relative to the bottom surface of full hall frame, steel truss hangs the form of slinger's station can so that the floor space of entirety reduces, and, there is below workbench certain space, passing through for vehicle, in order to ensure safety, can at workbench protective equipment mounted below, reach the purpose of safe passing, this kind of structure is also applied for the position that construction environment is restricted, such as Chengdu 2 nd Ring Road Reconstruction engineering, the side of bridge pier needs subway work, opposite side needs vehicle pass-through, mode such as through steel truss hoisting station realizes special needs.
Described steel truss includes suspension scaffold, suspension scaffold is arranged on support column top, is provided with truss strut on suspension scaffold, and truss strut is positioned at directly over support column, being provided with draw frame at truss strut top, the end of suspension scaffold is connected with the end of draw frame by brace. specifically, steel truss includes two frameworks being parallel to each other: draw frame above, the suspension scaffold being positioned below, suspension scaffold is the rectangular frame being welded by steel or shaped steel, draw frame is also the rectangular frame being welded by steel or shaped steel, the length of draw frame is less than the length of suspension scaffold, multiple support columns are both connected on cushion cap, it is perpendicular to cushion cap, support column forms matrix, and the length of suspension scaffold is more than the length of matrix, and suspension scaffold is symmetrical, it is easy to keep the weight balancing of both sides, the matrix that the size of draw frame is constituted with support column matches, during installation, draw frame is positioned at directly over the matrix that support column is constituted, in suspension scaffold truss strut installed above, truss strut and support column one_to_one corresponding, so, the vertical direction active force that truss strut is born can be directly passed to support column, reduce the effect of horizontal external, be conducive to stability and the fastness of entirety, the effect of draw frame is to provide pulling force upwards for suspension scaffold, the edge making suspension scaffold is also affected by pulling force upwards, it is to avoid bending.
Encorbelment at suspension scaffold and be additionally provided with outer reinforced pull rod between middle part, place and draw frame end, in the middle part of suspension scaffold and between draw frame end, be additionally provided with interior reinforced pull rod. Further, as a further improvement on the present invention, in order to improve the draw frame drawknot effect to suspension scaffold, outer reinforced pull rod can be installed between suspension scaffold and draw frame, the two ends of outer reinforced pull rod are connected to the middle part of suspension scaffold expenditure support column, meanwhile, so that draw frame stress balance, in the middle part of the frame of whole suspension scaffold, the drift angle place with draw frame is additionally provided with interior reinforced pull rod.
Described workbench includes operating platform, and operating platform is connected to below steel truss by multiple hanger bar. Further, adopt the mode being suspended on steel truss by operating platform, it is possible to overcome the inside configuration stress caused because of hard link, reduce the possibility of deformation.
Described operating platform is provided with multiple height adjustment mechanism. Further, as a further improvement on the present invention, in order to suitable in different moulds, it is possible to arrange multiple height adjustment mechanism on the operational platform, by the setting of height adjustment mechanism and change, it is possible to use in different templates, its practicality is improved.
Steel truss cantilever supporting frame construction method, comprises the following steps:
(A) built-in fitting is set when cushion cap pouring construction, after cushion cap is formed, Weld-supporting post on built-in fitting;
(B) carry out pier stud after support column welding to build, and built-in fitting is set;
(C) installing suspension scaffold at support column top, suspension scaffold is positioned at the part of support column both sides and is symmetric;
(D) welded truss pillar on suspension scaffold, truss strut and support column one_to_one corresponding;
(E) draw frame is installed at truss strut top, and outer reinforced pull rod and interior reinforced pull rod are installed between draw frame suspension scaffold;
(F) at suspension scaffold operating platform mounted below, operating platform is by multiple hanger bar;
(G) lifting bridge abutment moulding plate, and adjust the height of hanger bar, the position of template is adjusted with height adjustment mechanism;
(H) bridge pier is built.
This step of present invention is implemented, it is possible to greatly reduce the floor space of scaffold, and, what the overall lifting time was considerably less than full hall scaffold builds the time, and in like manner, the time of its dismounting is also considerably less than the dismounting time of scaffold.
After step (G) completes, cross-brace is installed between template and cushion cap, between cross-brace and the curved portions of template, is connected diagonal brace bar.
The present invention compared with prior art, has such advantages as and beneficial effect:
1 steel truss cantilever supporting frame construction method of the present invention, the mode of steel truss is installed at support column top, making below steel truss can slinger's station, the template of bridge pier can be installed on the table, the weight of template is sling support by steel truss, the mode of scaffold is set up relative to the bottom surface of full hall frame, steel truss hangs the form of slinger's station can so that the floor space of entirety reduces, and, there is below workbench certain space, passing through for vehicle, in order to ensure safety, can at workbench protective equipment mounted below, reach the purpose of safe passing, this kind of structure is also applied for the position that construction environment is restricted,
2 steel truss cantilever supporting frame construction methods of the present invention, suspension scaffold is the rectangular frame being welded by steel or shaped steel, draw frame is also the rectangular frame being welded by steel or shaped steel, the length of draw frame is less than the length of suspension scaffold, multiple support columns are both connected on cushion cap, it is perpendicular to cushion cap, support column forms matrix, and the length of suspension scaffold is more than the length of matrix, and suspension scaffold is symmetrical, it is easy to keep the weight balancing of both sides, the matrix that the size of draw frame is constituted with support column matches, during installation, draw frame is positioned at directly over the matrix that support column is constituted, in suspension scaffold truss strut installed above, truss strut and support column one_to_one corresponding, so, the vertical direction active force that truss strut is born can be directly passed to support column, reduce the effect of horizontal external, be conducive to stability and the fastness of entirety, the effect of draw frame is to provide pulling force upwards for suspension scaffold, the edge making suspension scaffold is also affected by pulling force upwards, it is to avoid bending,
3 steel truss cantilever supporting frame construction methods of the present invention, it is possible to greatly reduce the floor space of scaffold, and, what the overall lifting time was considerably less than full hall scaffold builds the time, and in like manner, the time of its dismounting is also considerably less than the dismounting time of scaffold.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Labelling and corresponding parts title in accompanying drawing:
1-cushion cap, 2-support column, 3-suspension scaffold, 4-truss strut, 5-draw frame, 6-brace, the outer reinforced pull rod of 7-, reinforced pull rod in 8-, 9-operating platform, 10-hanger bar, 11-height adjustment mechanism, 12-cross-brace, 13-diagonal brace bar, 14-connecting plate, 15-built-in fitting.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the present embodiment is for Cheng Wenlu improvement project in slow smooth " two fast two the penetrate two rings " project of stifled guarantor in the inner city in Chengdu 2 nd Ring Road Reconstruction engineering, it is positioned at Chengdu Zheng Xi main artey of communications (Cheng Wenlu), project becomes temperature viaduct from from the east of in Second Ring Road, to west longitude Shuan Qing South Road, Spora Lygodii station, QINGYANG main road, West Road, the Qingjian River, west terminates in Three links theory Su Po viaduct east side, total length about 2.1 kilometers, construction mileage K1+705-K1+920 (i.e. main pier 43#-48#), it is positioned at former one-tenth temperature way Lu Zhizheng, with QINGYANG main road (2.5 ring) decussation, Road, No. four line Qingjian River of subway subway station (with No. seven line transfer stops of subway), it is sitting at this section, Road, No. four line Qingjian River of subway subway station (with No. seven line transfer stops of subway), head of a station 205.2m, Breadth Maximum 26m, tetra-layers of station of foundation ditch depth capacity 28m(), between this engineering 46#, 47# pier, all the other section of foundation depth 22m, current subway is carrying out platform deep foundation pit construction, slope retaining etc., forms unsettled space, subway foundation pit supporting only has 2.3m from this engineering cushion cap limit, Coping Construction cannot set up support routinely, it is all municipal government's key project, through repeatedly consulting with the relevant unit such as subway, all can not stop work and give way, according to practical situation, have employed a kind of steel truss cantilever supporting frame construction method that the present invention invents, to be completed according to following operation with lower component: (A) is when cushion cap 1 pouring construction, built-in fitting 15 is placed in cushion cap 1, the quantity of built-in fitting is identical with the quantity of support column 2, and this built-in fitting 15 is according to rectangular arrangement, such built-in fitting each all adopts hook-shaped reinforcing bar to make, and it is enclosed within the reinforcing bar of cushion cap 1, when after concrete form removal after cushion cap 1 is built, the surface of cushion cap 1 is chiseled, form non-planar contact surface, then Weld-supporting post 2 on built-in fitting 15, support column 2 is perpendicular to cushion cap 1, (B) the sub-body reinforcement construction of bridge pier is carried out after support column 2 welding, after welding, colligation, Guan Mo, then the concreting of pier stud is carried out, and built-in fitting 15 is set, built-in fitting 15 herein is cylinder or large-area steel construction piece, its large-area axially vertical with built-in fitting 15, for playing the purpose increasing contact area, it is fixed in the reinforcing bar of pier column, (C) installing suspension scaffold 3 at support column 2 top, suspension scaffold 3 is connected into the framework of generally rectangle by steel welding, can increase part pull bar or crossbeam wherein, (D) welded truss pillar 4 on suspension scaffold 3, truss strut 4 and support column 2 one_to_one corresponding, (E) draw frame 5 is installed at truss strut 4 top, draw frame 5 is connected into the framework of generally rectangle by steel welding, the suspension scaffold 3 being positioned at support column 2 both sides is symmetric, outer reinforced pull rod 7 and interior reinforced pull rod 8 are installed between draw frame 5 suspension scaffold 3, steel truss, support column 2, truss strut 4 connecting portion can increase connecting plate 14, connecting plate 14 is as the connection carrier of ends, (F) at suspension scaffold 3 operating platform 9 mounted below, operating platform 9 is by multiple hanger bar 10, (G) lifting bridge abutment moulding plate, and adjust the height of hanger bar 10, the position of template is adjusted with height adjustment mechanism 11, installing cross-brace 12 between template and pier column, cross-brace 12 is fixed on the built-in fitting 15 in pier column, plays the effect that auxiliary supports, is connected diagonal brace bar 13 between cross-brace 12 and the curved portions of template,(H) bridge pier concrete placings, builds complete, form removal after concrete setting, dismounting steel truss.
The above, be only presently preferred embodiments of the present invention, the present invention not does any pro forma restriction, any simple modification that above example is made by every technical spirit according to the present invention, equivalent variations, each falls within protection scope of the present invention.
Claims (2)
1. steel truss cantilever supporting frame construction method, it is characterised in that comprise the following steps:
(A) built-in fitting is set when cushion cap (1) pouring construction, after cushion cap (1) is formed, Weld-supporting post (2) on built-in fitting;
(B) carry out pier stud after support column (2) welding to build, and built-in fitting is set;
(C) installing suspension scaffold (3) at support column (2) top, suspension scaffold (3) is positioned at the part of support column (2) both sides and is symmetric;
(D) at the upper welded truss pillar (4) of suspension scaffold (3), truss strut (4) and support column (2) one_to_one corresponding;
(E) draw frame (5) is installed at truss strut (4) top, and outer reinforced pull rod (7) and interior reinforced pull rod (8) are installed between draw frame (5) and suspension scaffold (3);
(F) at suspension scaffold (3) operating platform mounted below (9), operating platform (9) is by multiple hanger bar (10);
(G) lifting bridge abutment moulding plate, and adjust the height of hanger bar (10), the position of template is adjusted with height adjustment mechanism (11);
(H) bridge pier is built.
2. steel truss cantilever supporting frame construction method according to claim 6, it is characterized in that: after step (G) completes, cross-brace (12) is installed between template and cushion cap (1), between cross-brace (12) and the curved portions of template, is connected diagonal brace bar (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410581256.6A CN105625177A (en) | 2014-10-27 | 2014-10-27 | Steel truss suspending support construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410581256.6A CN105625177A (en) | 2014-10-27 | 2014-10-27 | Steel truss suspending support construction method |
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| Publication Number | Publication Date |
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| CN105625177A true CN105625177A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410581256.6A Pending CN105625177A (en) | 2014-10-27 | 2014-10-27 | Steel truss suspending support construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758843A (en) * | 2016-12-30 | 2017-05-31 | 中交路桥华南工程有限公司 | Steel truss beam bolt applies stubborn operating platform |
| CN108756254A (en) * | 2018-08-03 | 2018-11-06 | 中建钢构有限公司 | The installation method of cantilever frame platform and cantilever frame |
| CN109898821A (en) * | 2019-03-21 | 2019-06-18 | 陕西建工第九建设集团有限公司 | A kind of construction method of high-altitude overhanging template support frame body |
-
2014
- 2014-10-27 CN CN201410581256.6A patent/CN105625177A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758843A (en) * | 2016-12-30 | 2017-05-31 | 中交路桥华南工程有限公司 | Steel truss beam bolt applies stubborn operating platform |
| CN108756254A (en) * | 2018-08-03 | 2018-11-06 | 中建钢构有限公司 | The installation method of cantilever frame platform and cantilever frame |
| CN109898821A (en) * | 2019-03-21 | 2019-06-18 | 陕西建工第九建设集团有限公司 | A kind of construction method of high-altitude overhanging template support frame body |
| CN109898821B (en) * | 2019-03-21 | 2019-12-17 | 陕西建工第九建设集团有限公司 | Construction method of high-altitude cantilever formwork support frame body |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |
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| WD01 | Invention patent application deemed withdrawn after publication |