CN101586329B - Anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction - Google Patents
Anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction Download PDFInfo
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- CN101586329B CN101586329B CN2009100627089A CN200910062708A CN101586329B CN 101586329 B CN101586329 B CN 101586329B CN 2009100627089 A CN2009100627089 A CN 2009100627089A CN 200910062708 A CN200910062708 A CN 200910062708A CN 101586329 B CN101586329 B CN 101586329B
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- anchor ear
- clamping bar
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- table bracket
- anchor
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Abstract
The invention relates to an anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction, mainly comprising anchor ears, two support bars and combination beams, wherein two anchor ears are respectively tightened on two bridge pier pillars; and the lower ends of the two support bars are respectively welded with the anchor ear flank support platform to form as angle-tables and the upper ends thereof are welded with the lower stringers (3) of the combination beams as the front support points of the combination beams; the back support points of the combination beams are the capping beams (7) connected with the bridge piers and the combination beams is in firm connection with the screw cap and the capping beam by the clamping bar (8) and the high-strength tie-bar to form a triangle statically indeterminate structure. The normal construction of the bridge is still ensured when the floor bracket is out of use, due to the conditional limitation of deep water level, seasonality swelling or not enough bearing capacity of ground with features of simple device, low construction cost, convenient construction operation and short construction period.
Description
Technical field
The present invention relates to the interim supporting bracket that bridge construction is used, relate to particularly that long-span bridge beam end bay abutment pier is higher, the end bay headroom is higher, end bay is in the water or anchor ear angle-table bracket that the soft foundation bearing capacity is adopted when not enough.
Background technology
Along with the continuous development of China's economic construction, under the expediting the emergence of who manages storm, domestic increasing domestic demand, special investment energetically, the development that the construction of large bridge at present is certain to advance by leaps and bounds at speedway.Stride footpath prestressed concrete cantilever glider bridge greatly, beam section between continuous girder bridge, T type firm structure bridge end bay beam-ends and the abutment pier, because of construction technology needs, must establish falsework supports, the cast-in-place construction of finishing cast-in-place beam section of template, the advantage of this job practices is: the restriction of condition such as not risen by the bridge location depth of water, seasonality or bearing capacity of foundation soil is not enough does not need to adopt floor stand, cost is lower simultaneously, and safety is good.
Summary of the invention
Technical problem to be solved by this invention is: a kind of anchor ear angle-table bracket is provided, this support uses when large-span prestressed concrete bridge end bay closure segment is built, rise or during the restriction of condition such as bearing capacity of foundation soil is not enough in the bridge location depth of water, seasonality guaranteeing, can't adopt floor stand construction, adopt this support can guarantee that bridge normally constructs.
The present invention solves the technical scheme that its technical problem adopts: this support mainly is made up of two anchor ears, two support bars and compound beam.Wherein: two anchor ear difference lock rings are on two pier columns; Two support bars, its lower end are weldingly connected as bracket with anchor ear lateral support platform respectively, and its upper end is weldingly connected with the lower transverse beam of compound beam, as the preceding strong point of compound beam; The back strong point of compound beam is the cap that links to each other with bridge pier, and compound beam is fastenedly connected by upper and lower clamping bar and high-strength pull bar and nut and cap, interconnects triangularity statically-indeterminate structure system.Stress system when this support is constructed as large-span prestressed concrete bridge cantilever pouring, under this stress system, the construction task in the time of can realizing the construction of this bridge end bay closure segment under all load actions.
The present invention compared with prior art has following major advantage:
1. adopt two anchor ears, two combined I-shaped steel support bars make up beam in length and breadth before and after installing above, are welded to each other into whole steel work statically indeterminate system.Under this system, can guarantee to rise or the restriction of condition such as bearing capacity of foundation soil is not enough construction task when still guaranteeing the construction of bridge end bay closure segment in the time that floor stand can't being adopted under all load actions in the bridge location depth of water, seasonality.
2. this supporting structure is simple, and stability is high, the normal operation of guarantee construction that can be safe and reliable.
3. all plants are simple when installing, and cost is low, reduce construction cost, are convenient to construction, are not subjected to site influence, reliable construction quality, the characteristics of short construction period.
Description of drawings
Fig. 1 is the structural representation of anchor ear angle-table bracket of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the structural representation of anchor ear 6 among Fig. 1.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the vertical view of Fig. 4.
Among the figure: 1. go up longeron; 2. Two bors d's oeuveres front beam; 3. descend longeron; 4. support bar; 5. support platform; 6. anchor ear; 7. cap; 8. clamping bar; 9. high-strength pull bar; 10. rear cross beam.
The specific embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
The working anchor ear angle-table bracket of large-span prestressed concrete bridge cantilever pouring provided by the invention, its structure such as Fig. 1, Fig. 2 and shown in Figure 3: this support mainly is made up of two anchor ears 6, two support bars 4 and compound beam.Wherein: two anchor ear difference lock rings are on two pier columns; Two support bars, its lower end are weldingly connected as bracket with an anchor ear lateral support platform respectively, and its upper end is weldingly connected with the following longeron 3 of compound beam, as the preceding strong point of compound beam; The back strong point of compound beam is the cap 7 that links to each other with bridge pier, and compound beam is fastenedly connected by clamping bar 8 and high-strength pull bar 9 and nut and cap, interconnects triangularity statically-indeterminate structure system.It is Φ 32 finish rolling deformed bars that high-strength pull bar 9 can adopt model.
Described compound beam, it is made up of last longeron 1, Two bors d's oeuveres front beam 2, following longeron 3 and rear cross beam 10.Wherein: described longeron down, its rear end and rear cross beam 10 are weldingly connected, and the bottom of its front end and Two bors d's oeuveres front beam 2 is weldingly connected; The described longeron of going up, the top of its front end and Two bors d's oeuveres front beam 2 is weldingly connected, and its rear end (about 50cm) rides on the cap, and posterior part rides on the rear cross beam and is weldingly connected; Rear cross beam 10 is fixed on the cap 7 by clamping bar.
Described anchor ear 6, its structure such as Fig. 4 are to shown in Figure 6: by two semicircle anchor ears with strengthen steel plate and constitute, two semicircle anchor ears close up the back by strengthening that steel plate is waled and by high-strength bolt and fixed by nut.Be provided with the support platform 5 that is weldingly connected with it in the bottom of anchor ear 6 lateral surfaces, this support platform is as the strong point of bracket lower end.
The material of described anchor ear 6 is a steel plate, is made by plate bending rolls.The internal diameter of this anchor ear is 150～250cm, is 100～20cm highly, perhaps decides according to the real size of bridge pier.
Described Two bors d's oeuveres front beam 2 can adopt two No. 56 parallel being welded of i iron.
Described clamping bar 8 can be made up of upper and lower clamping bar, and upper and lower clamping bar respectively has 4, and they are that 20a i iron Two bors d's oeuveres is made by two models.
The working anchor ear angle-table bracket of above-mentioned large-span prestressed concrete bridge cantilever pouring provided by the invention, it is installed on the bridge pier, stress system when constructing as large-span prestressed concrete bridge cantilever pouring, under this stress system, the construction task in the time of can realizing the construction of this bridge end bay closure segment under all load actions.
Described anchor ear angle-table bracket can try the test of the skid resistance of assembly unit, reaction frame setting, anchor ear, to guarantee result of use before using.This test method is as follows:
Be chosen in and try assembly unit and pressure testing on the column of land, the frictional resistance between check anchor ear and the column.Anchor ear is oppositely installed (above-below direction is reverse) and tried assembly unit on landbridge pier stud column, its underpart is near binder top (reducing the distance between binder and the anchor ear bracket platform), and spacing is 110cm between the two.Level is installed four worker's 40 i iron combined systems on binder, is combined into reaction frame with binder.The 400t hydraulic jack is installed on the i iron combined system, slowly the primer fluid pressing system makes jack contact with anchor ear bracket support platform, check whether both locate smooth-going contact, utilize binder as reaction frame then, at the uniform velocity starting the jack pair anchor ear carries out vertical direction and up pushes up, the state that reaches 200t (4 times of safety factor) when jack checks that down anchor ear does not have distortion, non-loosening, do not produce sliding phenomenon along the post direction, proves that this anchor ear is safe and reliable.
Claims (8)
1. working anchor ear angle-table bracket of large-span prestressed concrete bridge cantilever pouring is characterized in that this support mainly is made up of two anchor ears (6), two support bars (4) and compound beam, wherein: two anchor ears respectively lock rings on two pier columns; Two support bars, its lower end are weldingly connected as bracket with anchor ear lateral support platform respectively, and its upper end is weldingly connected with the following longeron (3) of compound beam, as the preceding strong point of compound beam; The back strong point of compound beam is the cap (7) that links to each other with bridge pier, and compound beam is fastenedly connected by clamping bar (8) and high-strength pull bar and nut and cap, and anchor ear, support bar and compound beam interconnect triangularity statically-indeterminate structure system.
2. anchor ear angle-table bracket according to claim 1, it is characterized in that described compound beam is by last longeron (1), Two bors d's oeuveres front beam (2), longeron (3) and rear cross beam (10) are formed down, wherein: described longeron down, its rear end and rear cross beam (10) are weldingly connected, and the bottom of its front end and Two bors d's oeuveres front beam (2) is weldingly connected; The described longeron of going up, the top of its front end and Two bors d's oeuveres front beam (2) is weldingly connected, and its rear end rides on the cap, and posterior part rides on the rear cross beam and is weldingly connected; Rear cross beam (10) is fixed on the cap (7) by clamping bar.
3. anchor ear angle-table bracket according to claim 1 is characterized in that: described anchor ear (6) is by two semicircle anchor ears and strengthen steel plate and constitute, and two semicircle anchor ears close up the back by strengthening that steel plate is waled and by high-strength bolt and fixed by nut.
4. according to claim 1 or 3 described anchor ear angle-table brackets, it is characterized in that: the bottom outside anchor ear (6) is provided with the support platform that is weldingly connected with it, and this support platform is as the strong point of bracket lower end.
5. anchor ear angle-table bracket according to claim 4, the internal diameter that it is characterized in that described anchor ear (6) is 150～250cm, highly is 100～20cm, material is a steel plate, is made by plate bending rolls.
6. anchor ear angle-table bracket according to claim 2 is characterized in that: Two bors d's oeuveres front beam (2) adopts two No. 56 parallel being welded of i iron.
7. anchor ear angle-table bracket according to claim 1 is characterized in that: described clamping bar (8) is made up of last clamping bar, lower clamping bar, and last clamping bar, lower clamping bar respectively have 4, and they are made for the 20a i iron by model.
8. according to the purposes of the described anchor ear angle-table bracket of arbitrary claim in the claim 1 to 7, it is characterized in that: the stress system when this support is constructed as large-span prestressed concrete bridge cantilever pouring, under this stress system, the construction task in the time of can realizing the construction of this bridge end bay closure segment under all load actions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100627089A CN101586329B (en) | 2009-06-12 | 2009-06-12 | Anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100627089A CN101586329B (en) | 2009-06-12 | 2009-06-12 | Anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101586329A CN101586329A (en) | 2009-11-25 |
| CN101586329B true CN101586329B (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100627089A Expired - Fee Related CN101586329B (en) | 2009-06-12 | 2009-06-12 | Anchor ear angle-table bracket for large-span prestressed concrete bridge cantilever pouring construction |
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| CN (1) | CN101586329B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104560065B (en) * | 2013-10-22 | 2017-02-15 | 五冶集团上海有限公司 | False corbel bracket and using method thereof during examining and repairing corbel bricks in dry quenching chute |
| CN106284103B (en) * | 2016-08-22 | 2018-01-02 | 中国铁建大桥工程局集团有限公司 | Steel reinforced concrete combination beam roof steel bar concrete high-altitude cantilever pouring construction method |
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2009
- 2009-06-12 CN CN2009100627089A patent/CN101586329B/en not_active Expired - Fee Related
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| CN101586329A (en) | 2009-11-25 |
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Granted publication date: 20110209 Termination date: 20190612 |