CN106677070B - A kind of high-altitude long-span heavy duty construction of beam bracket and construction method - Google Patents

A kind of high-altitude long-span heavy duty construction of beam bracket and construction method Download PDF

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Publication number
CN106677070B
CN106677070B CN201611267199.XA CN201611267199A CN106677070B CN 106677070 B CN106677070 B CN 106677070B CN 201611267199 A CN201611267199 A CN 201611267199A CN 106677070 B CN106677070 B CN 106677070B
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CN
China
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bracket
support
king
construction
laid
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CN201611267199.XA
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Chinese (zh)
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CN106677070A (en
Inventor
张忠文
静国锋
邹松柏
王军涛
赵科
鲁鹏博
田晓东
李亚辉
吴友峰
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中铁一局集团有限公司
中国中铁股份有限公司
中铁一局集团桥梁工程有限公司
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Priority to CN201611267199.XA priority Critical patent/CN106677070B/en
Publication of CN106677070A publication Critical patent/CN106677070A/en
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Publication of CN106677070B publication Critical patent/CN106677070B/en

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses a kind of high-altitude long-span heavy duty construction of beam bracket and construction methods, the construction bracket includes lower corbels support structure, positioned at the upper corbels support structure of lower corbels support superstructure, bottom is supported in the midfoot support structure in lower corbels support structure, top surface flush and the two group temporary supporting platform that constructed crossbeam is supported in pairs of upper corbels support structure and midfoot support structure are erected with load-carrying members on temporary supporting platform;The construction method is comprising steps of one, lower corbels support structure is installed;Two, upper corbels support structure and the installation of midfoot support structure;Three, load-carrying members are set up;Four, pre-pressing bracket;Five, upper beam is constructed;Six, support removing.The present invention has rational design and easy construction, using effect are good, can effectively solve existing for existing landing steel pipe supporting system it is at high cost, set up that process complexity, long construction period, construction risk are big, stability of strutting system requirement is high, influence the problems such as upper beam construction speed.

Description

A kind of high-altitude long-span heavy duty construction of beam bracket and construction method

Technical field

The invention belongs to technical field of bridge construction, more particularly, to a kind of high-altitude long-span heavy duty construction of beam bracket and Construction method.

Background technique

General cable-stayed bridge upper beam (i.e. Cable-stayed Bridge Pylon upper beam) construction has the characteristics that heavy duty, high-altitude, greatly across upper cross Beam construction often becomes the heavy difficult point engineering in the construction of entire king-post.Landing steel pipe support is usually used in existing construction method System (i.e. vertical support system), for the construction safety for guaranteeing upper beam works, while to meet force request, console mode steel Pipe support is that steel-pipe pile is set up on lower beam based on lower beam mostly, and often setting up certain altitude is attachment with Sarasota It is supported, with the raising of king-post, steel pipe support system gradually rises and reaches the construction elevation position of upper beam.It is above-mentioned to apply Support system slenderness ratio employed in work method is big, and stability requirement is high, and the requirement to place is larger, and one section of height of every construction It after degree, needs to carry out attachment connection on king-post, guarantees the stability of entire support system, and since support system rides upon On the basis of lower beam, upper beam and girder synchronous construction can not be carried out, for requiring the synchronous project for carrying out the construction of tower beam to deposit It is interfering with each other, can not constructed using such arrangement and method for construction.

Meanwhile above-mentioned landing steel pipe supporting system has the following disadvantages and deficiency: the first, engineering material input amount is big, makes Valence is high, at high cost;The second, big to site requirements, floor stand need to be set up on upper beam, and it is same with girder to can not achieve upper beam Step construction, causes total construction period to extend;The mutual operating area of bracket phase is set up in third, the total long construction period of upper beam bracket, high-altitude Length is influenced, construction risk is big;4th, it is pre-buried need to carry out many places in tower wall for bracket attachment stull, influences king-post presentation quality, after Phase processing is cumbersome;5th, stability of strutting system requires high;6th, have a significant impact for the construction effect of king-post construction, it cannot be complete The full advantage for playing the single construction speed of king-post, need to synchronize and arrange setting up for landing steel pipe supporting system, otherwise influence upper beam Construction speed.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of high-altitude greatly across Spend heavily loaded construction of beam bracket, simple structure and reasonable design and simple installation, using effect are good can effectively solve existing fall It is at high cost existing for ground steel pipe supporting system, set up that process complexity, long construction period, construction risk be big, stability of strutting system requirement Height influences the problems such as upper beam construction speed.

In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of high-altitude long-span heavy duty construction of beam Bracket, it is characterised in that: including lower corbels support structure, positioned at the upper corbels support knot of the lower corbels support superstructure Structure, bottom are supported in the midfoot support structure in the lower corbels support structure, the upper corbels support structure and the middle part The top surface flush and the two group of the support construction temporary supporting platform that constructed crossbeam is supported in pairs, constructed crossbeam are The upper beam of Cable-stayed Bridge Pylon, the upper beam are respectively supported at two of the Cable-stayed Bridge Pylon in horizontal layout and its both ends On king-post, the upper beam and two king-posts are reinforced concrete structure;It is erected on the temporary supporting platform pair Upper beam carries out horizontally-supported load-carrying members;The lower corbels support structure includes that multiple groups are laid in from front to back described in two Lower bracket between king-post, the structure of lower bracket is all the same described in multiple groups and it is laid in same level;Described in every group Lower bracket includes the two lower brackets being symmetrically laid on same vertical plane in left and right, and two lower brackets are separately fixed at two On the inner sidewall of a king-post;The upper corbels support structure includes that multiple groups are laid in from front to back between two king-posts Upper bracket, the structure of upper bracket is all the same described in multiple groups and it is laid in same level;Upper bracket described in every group is equal Including the two upper brackets being symmetrically laid on same vertical plane in left and right, two upper brackets are separately fixed at two towers On the inner sidewall of column;The outer end of the lower bracket and upper bracket is anchored on king-post;The midfoot support structure includes multiple groups The structure of the middle bracket being laid between two king-posts from front to back, middle bracket described in multiple groups is all the same and it is laid in Middle bracket described in being provided with one group in same level, right above lower bracket described in every group, middle bracket described in every group wrap The two middle brackets being symmetrically laid on same vertical plane in left and right are included, the bottom of two middle brackets is respectively supported at same group On two lower brackets in the lower bracket, two middle brackets, which are fastenedly connected, is integrated and is formed a formation vertically Support construction is fastenedly connected between multiple vertical supporting structures by longitudinal connection structure and is integrated;The lower bracket, on Bracket and middle bracket are arranged vertically.

A kind of above-mentioned high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: the load-carrying members include bearing platform, The bed die that multiple tracks rides upon distribution beam on the bearing platform, carries out molding construction to upper beam, distribution beam described in multiple tracks It is laid in same level;The bearing platform include multiple tracks be laid in same level from front to back spandrel girder, The spandrel girder and the perpendicular laying of vertical supporting structure, the distribution beam and the perpendicular laying of spandrel girder;The bed die In horizontal layout and its be supported in distribution beam described in multiple tracks.

Above-mentioned a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: further including being carried out to two king-posts The interim prestressing apparatus reinforced, the interim prestressing apparatus includes that multiple tracks is laid in facing in same level from front to back When presstressed reinforcing steel, interim presstressed reinforcing steel described in multiple tracks lays in parallel, and the both ends of interim presstressed reinforcing steel described in per pass anchor respectively On two king-posts, it is provided with and multiple interim presstressed reinforcing steel is anchored respectively on the lateral wall of two king-posts Prestressed anchor.

Above-mentioned a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: under the interim prestressing apparatus is located at Above bracket, the interim prestressing apparatus is located at the lower outside of middle bracket;

Also is provided with multiple groups stull between two king-posts from front to back, the structure of stull described in multiple groups it is all the same and its It is laid in same level, stull described in multiple groups is respectively positioned below the lower corbels support structure;Stull described in every group is equal Including it is multiple be from top to bottom laid in it is same it is vertical on stull, the both ends of each stull are respectively supported at the inside of king-post On wall;The stull in horizontal layout and its with the vertical supporting structure in parallel laying.

Above-mentioned a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: two king-posts are respectively left side tower Column and the right side king-post on the right side of the left side king-post, all upper brackets on the left side king-post form Left-side support knots Structure, all upper brackets on the right side king-post form Right side support structures, the Left-side support structure, the Right side support knot The fall girder apparatus for load-carrying members support is provided on structure and the midfoot support structure;The fall girder apparatus is in level It lays, all fall girder apparatus being arranged in the Left-side support structure, the Right side support structure and the midfoot support structure It is laid in same level, each fall girder apparatus is to prop up with the longitudinal direction of the perpendicular laying of vertical supporting structure Support arrangement.

Above-mentioned a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: the structure of the lower bracket and upper bracket It is identical and both for assembly type bracket, the assembly type bracket include pre-buried structure, more Pin be fixed on from front to back it is described pre- Bury the fining twisted steel that sizing bracket and multiple tracks in structure are in horizontal layout, the structure of sizing bracket described in more Pin it is all the same and It is laid in same level, sizing bracket is arranged vertically described in every Pin and it is in the vertical supporting structure Parallel to lay, the fining twisted steel is laid with the sizing bracket in parallel;Sizing bracket includes horizontal ox described in every Pin Leg and top are fixed on the oblique bracket in the middle part of horizontally-supported bracket, and the oblique bracket is from top to bottom gradually inclined outwardly;It is described pre- Bury structure include upper pre-buried anchor box and immediately below upper pre-buried anchor box under pre-buried anchor box, the upper pre-buried anchor box and under it is pre-buried Anchor box is embedded in king-post in advance;The outer end of the horizontally-supported bracket is fixed in pre-buried anchor box, the outer end of the oblique bracket Under being fixed in pre-buried anchor box, fining twisted steel described in multiple tracks is laid in horizontally-supported bracket, the horizontally-supported bracket Inside and outside be provided with the anchorage that multiple pairs of fining twisted steels are anchored.

A kind of above-mentioned high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: two king-posts be open tubular column and Multiple tracks vertical applied force reinforcing bar is provided with inside the two, the anchorage being arranged on the outside of the horizontally-supported bracket is located at the sky In the internal cavities of stem;The multiple rows of multiple row of fining twisted steel described in multiple tracks point is laid;The upper pre-buried anchor box is pre-buried under The reinforced hole passed through for the vertical applied force reinforcing bar is opened on anchor box.

Above-mentioned a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterized in that: the middle bracket includes oblique supporting leg, institute Oblique supporting leg bottom to be stated to be supported on lower bracket, the oblique supporting leg bottom is fixed on the horizontally-supported bracket in lower bracket, The oblique supporting leg supports the oblique bracket in lower bracket to lay in parallel with it;Two in middle bracket described in every group are described oblique To being fastenedly connected between supporting leg by transverse truss, the transverse truss is in horizontal layout and itself and the vertical supporting Structure is laid in parallel;The longitudinal connection structure is longitudiual truss, and the longitudiual truss is in horizontal layout and itself and lateral purlin The perpendicular laying of frame.

Meanwhile the invention also discloses a method and steps simple, design is rationally and the good height of easy construction, using effect Empty large span heavy duty crossbeam construction method, which is characterized in that method includes the following steps:

Step 1: lower corbels support structure installation: it synchronizes from the bottom to top and two king-posts is carried out in work progress, to When two king-posts are constructed to the lower corbels support structure present position, the lower corbels support structure is pacified Dress;

Step 2: upper corbels support structure and the installation of midfoot support structure: constructing to two king-posts on described When corbels support structure present position, the upper corbels support structure is installed;The upper corbels support structure is carried out In installation process, synchronizes and the midfoot support structure is installed;To the upper corbels support structure and the midfoot support After the completion of structure is respectively mounted, the temporary supporting platform is obtained;

Step 3: load-carrying members are set up: setting up the load-carrying members on temporary supporting platform, obtain applying for installation forming Work bracket;

Step 4: pre-pressing bracket: carrying out precompressed to construction bracket described in step 3;

Step 5: upper beam is constructed: the construction bracket completed using precompressed constructs to upper beam;

Step 6: support removing: after the completion of upper beam construction, being removed to the construction bracket.

The above method, it is characterized in that: being descended described in step 1 described in lower bracket and the step 2 in corbels support structure The structure of upper bracket in upper corbels support structure is identical and both for assembly type bracket, and the assembly type bracket includes pre-buried Sizing bracket and multiple tracks that structure, more Pin are fixed on from front to back on the pre-buried structure are in the fining twisted steel of horizontal layout, Be formed described in more Pin bracket structure it is all the same and be laid in same level, sizing bracket described in every Pin be in vertically to It lays and it is laid with the vertical supporting structure in parallel, the fining twisted steel is in parallel cloth with the sizing bracket If;Sizing bracket described in every Pin includes horizontal bracket and top is fixed on the oblique bracket in the middle part of horizontally-supported bracket, it is described tiltedly Bracket is from top to bottom gradually inclined outwardly;The pre-buried structure include upper pre-buried anchor box and immediately below upper pre-buried anchor box under Pre-buried anchor box, the upper pre-buried anchor box pre-buried anchor box under are embedded in king-post in advance;The outer end of the horizontally-supported bracket is fixed In in upper pre-buried anchor box, under being fixed in pre-buried anchor box, fining twisted steel described in multiple tracks is laid in for the outer end of the oblique bracket In horizontally-supported bracket, the anchor that multiple pairs of fining twisted steels are anchored is provided with inside and outside the horizontally-supported bracket Tool;

When lower corbels support structure described in step 1 is installed, respectively under each in the lower corbels support structure Bracket is installed respectively;The installation method of all lower brackets is all the same;When being installed any one described lower bracket, first will The upper pre-buried anchor box of the lower bracket pre-buried anchor box under is embedded in king-post respectively, then ox of being formed described in more Pin of the lower bracket Leg is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, the fining twisted steel described in multiple tracks is pacified respectively It fills, fining twisted steel described in the road Bing Duige carries out tensioning respectively;

When upper corbels support structure described in step 2 is installed, respectively on each in the upper corbels support structure Bracket is installed respectively;The installation method of all upper brackets is all the same;When being installed any one described upper bracket, first will Upper pre-buried anchor box of bracket pre-buried anchor box under is embedded in king-post respectively on this, then ox of being formed described in more Pin of bracket on this Leg is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, the fining twisted steel described in multiple tracks is pacified respectively It fills, fining twisted steel described in the road Bing Duige carries out tensioning respectively;

It is synchronized from the bottom to top in step 1 and two king-posts is carried out also to need installation to two towers in work progress The interim prestressing apparatus that column is reinforced, the interim prestressing apparatus include that multiple tracks is laid in same level from front to back On interim presstressed reinforcing steel, interim presstressed reinforcing steel described in multiple tracks lays in parallel, the both ends point of interim presstressed reinforcing steel described in per pass Be not anchored on two king-posts, be provided on the lateral wall of two king-posts it is multiple respectively to interim presstressed reinforcing steel into The prestressed anchor of row anchoring;

Before carrying out pre-pressing bracket in step 4, first synchronizes the interim presstressed reinforcing steel described in multiple tracks and carry out tensioning respectively.

Compared with the prior art, the present invention has the following advantages:

1, used high-altitude long-span heavy duty construction of beam supporting structure is simple and processing and fabricating is easy, and engineering is thrown with material Enter that amount is big, low cost, cost is relatively low.

2, used high-altitude long-span heavy duty construction of beam supporting structure design mainly includes lower corbels support knot rationally Structure, upper corbels support structure, midfoot support structure, fall girder apparatus and load-carrying members, while it being additionally provided with interim prestressing apparatus, Each component is that molding is pre-machined, and processing quality is easy to guarantee, scene need to only be installed.

3, used high-altitude long-span heavy duty construction of beam bracket simple installation, is directly fixedly mounted on king-post, peace It fills short time limit and construction risk is small.

4, used high-altitude long-span heavy duty construction of beam bracket is small to site requirements, only need to be by lower bracket and upper bracket It is fixed on king-post.Lower bracket occupies little space with upper bracket, and direct simplicity is rapidly secured on king-post, and not Adverse effect can be caused to king-post work progress and construction quality.Meanwhile will not influence king-post presentation quality, post-processing letter It is single.

5, used high-altitude long-span heavy duty construction of beam bracket is able to achieve upper beam and girder synchronous construction, so that always Duration substantially shortens.

6, used high-altitude long-span heavy duty construction of beam bracket is applied widely, can be effectively applicable to span and be greater than 30m, bearing height are greater than 50m and quality is greater than 1000 tons of construction of beam, while being able to satisfy structure stress demand, overall structure Stable, firm, stability of strutting system requires lower.

7, the simple structure and reasonable design and simple processing of lower bracket Yu upper bracket are used, input cost is lower.

8, the reasonable in design of lower bracket and upper bracket is used, pre-buried anchor box is fixed on under using upper pre-buried anchor box On king-post, the pre-buried process of upper pre-buried anchor box pre-buried anchor box under will not destroy king-post main reinforcement, guarantee the construction of king-post Quality.Also, lower bracket and upper bracket are both designed as the structure of fining twisted steel and the common stress of bracket of being formed, stress it is clear and Construction is simple, conveniently, construction quality is easy to guarantee.

9, used interim prestressing apparatus and the common stress of active support construction, have been effectively ensured the entirety of structure Property.

10, each component of used high-altitude long-span heavy duty construction of beam bracket can be processed on ground, lift spelling, subtract High altitude operation is lacked.Each component processing is very convenient, while being able to achieve building-site processing.

11, the bracket in upper corbels support structure and lower corbels support structure is both designed as separate type, can according to bracket by Power size increases and decreases the quantity of bracket quantity and fining twisted steel, and form of construction work is flexible.

12, used high-altitude long-span heavy duty construction of beam bracket is reusable, and turnover rate is higher, can substantially save Cost.

13, used high-altitude long-span heavy duty construction of beam bracket is easy to use and using effect is good, practical valence Value is high, can effectively solve heavy duty, high-altitude, greatly across the construction difficult problem of crossbeam, it is heavily loaded, different high to can be suitably used for different spans, difference The construction of beam process of air situation condition is able to achieve tower beam synchronous construction, and can overcome a variety of existing for landing steel pipe supporting system lack It falls into, overall performance is good.Meanwhile the monolithic lighter in weight of each component of the construction bracket, it is easy to lift the selection of equipment, is convenient for structure Installation and dismounting;The revolving height of material, high financial profit can reduce the damage to king-post steel bar stress to greatest extent;Needle It to different spans, height, case of heavy load, can freely carry out carrying out spelling combination construction according to stress, guarantee that structure type is logical With and standardization.Adverse effect is not had to the work progress of king-post, the advantage of the single construction speed of king-post can be played completely, no It will affect the construction speed of upper beam.

14, used construction method step is simple, design is reasonable and easy construction, construction quality are easily controllable, can letter Just, upper beam work progress is rapidly completed, and work progress is safe and reliable.

In conclusion the present invention has rational design and easy construction, using effect are good, existing landing steel pipe branch can effectively solve It is at high cost existing for support body system, set up that process complexity, long construction period, construction risk are big, stability of strutting system requirement is high, in influence The problems such as construction of beam progress.

Below by drawings and examples, technical scheme of the present invention will be described in further detail.

Detailed description of the invention

Fig. 1 is the Construction State schematic diagram of construction bracket of the present invention.

Fig. 2 is the side structure diagram of construction bracket of the present invention.

Fig. 3 is the layout position illustration of the lower bracket of the present invention.

Fig. 4 is the structural schematic diagram of more Pin sizing brackets in the lower bracket of the present invention.

Fig. 5 is the structural schematic diagram of more Pin sizing brackets in the upper bracket of the present invention.

Fig. 6 is method flow block diagram when being constructed using the present invention to high-altitude long-span heavy duty crossbeam.

The positive layout position illustration of Fig. 7 used hanging apparatus when being removed for the present invention to construction bracket.

The side layout position illustration of Fig. 8 used hanging apparatus when being removed for the present invention to construction bracket.

Description of symbols:

1-upper beam;2-king-posts;3-lower brackets;

4-upper brackets;5-middle brackets;6-interim presstressed reinforcing steels;

7-fall girder apparatus;8-spandrel girders;9-distribution beams;

10-bed dies;11-stulls;12-horizontal brackets;

13-oblique brackets;14-upper pre-buried anchor boxes;Pre-buried anchor box under 15-;

16-oblique supporting legs;17-transverse truss;18-longitudiual truss;

19-fining twisted steels;20-avris sunpenders;21-middle part sunpenders.

Specific embodiment

A kind of high-altitude long-span heavy duty construction of beam bracket as shown in Figure 1 and Figure 2, including lower corbels support structure, be located at The upper corbels support structure of the lower corbels support superstructure, bottom are supported in the middle part branch in the lower corbels support structure Pairs of the constructed crossbeam of the top surface flush and the two group of support structure, the upper corbels support structure and the midfoot support structure The temporary supporting platform being supported, constructed crossbeam are the upper beam 1 of Cable-stayed Bridge Pylon, and the upper beam 1 is in horizontal layout And its both ends is respectively supported on two king-posts 2 of the Cable-stayed Bridge Pylon, the upper beam 1 is with two king-posts 2 Reinforced concrete structure;It is erected on the temporary supporting platform and carries out horizontally-supported load-carrying members to upper beam 1;Under described Corbels support structure includes the lower bracket 3 that multiple groups are laid in from front to back between two king-posts 2, lower bracket 3 described in multiple groups Structure it is all the same and it is laid in same level;Lower bracket 3 described in every group includes that left and right two is symmetrically laid in Lower bracket 3 on same vertical plane, two lower brackets 3 are separately fixed on the inner sidewall of two king-posts 2;On described Corbels support structure includes the upper bracket 4 that multiple groups are laid in from front to back between two king-posts 2, upper bracket 4 described in multiple groups Structure it is all the same and it is laid in same level;Upper bracket 4 described in every group includes that left and right two is symmetrically laid in Upper bracket 4 on same vertical plane, two upper brackets 4 are separately fixed on the inner sidewall of two king-posts 2;Under described The outer end of bracket 3 and upper bracket 4 is anchored on king-post 2;The midfoot support structure includes that multiple groups are laid in two from front to back The structure of middle bracket 5 between a king-post 2, middle bracket 5 described in multiple groups is all the same and it is laid in same level, The surface of lower bracket 3 described in every group be provided with one group described in middle bracket 5, middle bracket 5 described in every group includes left and right two The middle bracket 5 being symmetrically laid on same vertical plane, the bottom of two middle brackets 5 be respectively supported at same group described in lower ox On two lower brackets 3 in leg 3, two middle brackets 5, which are fastenedly connected, is integrated and is formed a formation vertical supporting Structure is fastenedly connected between multiple vertical supporting structures by longitudinal connection structure and is integrated;The lower bracket 3, upper ox Leg 4 and middle bracket 5 are arranged vertically.

In the present embodiment, the lower corbels support structure includes lower bracket 3, the upper corbels support structure packet described in four groups Upper bracket 4 described in including four groups, the midfoot support structure include middle bracket 5 described in four groups.The surface of lower bracket 3 described in every group Upper bracket 4 described in being provided with one group.

When practice of construction, according to specific needs, to the quantity of lower bracket 3 included by the lower corbels support structure and Upper ox described in the quantity and each group of upper bracket 4 included by the installation position of lower bracket 3, the upper corbels support structure described in each group The laying position of middle bracket 5 described in the quantity and each group of middle bracket 5 included by the installation position of leg 4 and the midfoot support structure It sets and adjusts accordingly respectively.

In the present embodiment, the weight of the upper beam 1 is up to 2025 tons, and support system is apart from 116 m of ground, apart from lower beam Top surface 99m, span reaches 37m, and requires tower beam synchronous construction, therefore construction is not achieved using traditional landing steel pipe supporting system It is required that.

In the present embodiment, high-altitude long-span heavy duty construction of beam bracket of the present invention further includes to two towers The interim prestressing apparatus that column 2 is reinforced, the interim prestressing apparatus include that multiple tracks is laid in same level from front to back Interim presstressed reinforcing steel 6 on face, interim presstressed reinforcing steel 6 described in multiple tracks are laid in parallel, the two of interim presstressed reinforcing steel 6 described in per pass End is anchored at respectively on two king-posts 2, is provided on the lateral wall of two king-posts 2 multiple respectively to temporarily answering in advance The prestressed anchor that power muscle 6 is anchored.

When practice of construction, the interim prestressing apparatus is located at 3 top of lower bracket, during the interim prestressing apparatus is located at The lower outside of bracket 5.

In the present embodiment, the interim presstressed reinforcing steel 6 is prestress wire.

Since in 1 concreting process of upper beam horizontal force can be generated to king-post 2, to prevent king-post 1 from shifting, in advance It is further applied load using the interim prestressing apparatus to king-post 2,2 stability of king-post can be effectively ensured.High-altitude of the present invention Large span heavy duty construction of beam bracket is active support construction, and the interim prestressing apparatus is in the high-altitude long-span heavy duty crossbeam Carry out tensioning before construction bracket precompressed, upper beam 1 carried out in work progress, the interim prestressing apparatus and the high-altitude greatly across Heavily loaded construction of beam bracket entirety stress is spent, is further ensured that construction safety.

In the present embodiment, it is also provided with multiple groups stull 11 from front to back between two king-posts 2, stull 11 described in multiple groups Structure it is all the same and it is laid in same level, stull 11 described in multiple groups is respectively positioned on the lower corbels support structure Lower section;Stull 11 described in every group include it is multiple be from top to bottom laid in it is same it is vertical on stull 11, each stull 11 Both ends be respectively supported on the inner sidewall of king-post 2;The stull 11 in horizontal layout and its with the vertical supporting structure be in It is parallel to lay.

In the present embodiment, stull 11 described in every group includes two stulls 11.

When practice of construction, according to specific needs, the quantity of included stull 11 in the stull 11 described in every group carries out phase It should adjust.

In the present embodiment, the load-carrying members include that bearing platform, multiple tracks ride upon distribution on the bearing platform Beam 9, the bed die 10 that molding construction is carried out to upper beam 1, distribution beam 9 described in multiple tracks are laid in same level;It is described to hold Galassing platform includes spandrel girder 8, the spandrel girder 8 and the vertical supporting knot that multiple tracks is laid in from front to back in same level The perpendicular laying of structure, the distribution beam 9 and the perpendicular laying of spandrel girder 8;The bed die 10 in horizontal layout and its be supported in it is more In distribution beam 9 described in road.

The spandrel girder 8 is Bailey beam, and the distribution beam 9 is I-steel.When practice of construction, the spandrel girder 8 and distribution Beam 9 can also use other types of beam body.

The load that the beam body weight for mainly undertaking upper beam 1 of the spandrel girder 8 and construction generate, to guarantee upper beam 1 Beam body it is linear, spandrel girder 8 need to have enough intensity and rigidity.The distribution beam 9 is placed in the Bailey beam.This implementation In example, the spacing between distribution beam 9 described in adjacent twice is 75cm, and all distribution beams 9 can be effectively ensured in such laying spacing All on Bailey beam node.The bed die 10 is made using the lumps of wood with bamboo slab rubber, and formation bed die system in distribution beam 9 is placed on System provides operation platform together with spandrel girder 8 for the construction of upper beam 1.

Two king-posts 2 are respectively left side king-post and the right side king-post on the right side of the left side king-post, the left side All upper brackets 4 on king-post form Left-side support structure, and all upper brackets 4 on the right side king-post form Right side support knot Structure is provided in the Left-side support structure, the Right side support structure and the midfoot support structure for the load-bearing knot The fall girder apparatus 7 of structure support;The fall girder apparatus 7 be in horizontal layout, the Left-side support structure, the Right side support structure and All fall girder apparatus 7 being arranged in the midfoot support structure are laid in same level, and each fall girder apparatus 7 is For the longitudinal bracing device with the perpendicular laying of vertical supporting structure.

In the present embodiment, the fall girder apparatus 7 being arranged in the Left-side support structure and the Right side support structure is in symmetrical It lays, arranged symmetrically in the midfoot support structure there are two the fall girder apparatus 7.

When practice of construction, according to specific needs, to the quantity of set fall girder apparatus 7 in the midfoot support structure and The installation position of each fall girder apparatus 7 adjusts accordingly respectively.

In the present embodiment, the fall girder apparatus 7 by more spiral steel pipe processing and fabricatings stringer, the two of the spiral steel pipe End is covered with steel plate.

The main function of the lowering device 7 be transmit spandrel girder 8 load to the upper corbels support structure, it is described in In portion's support construction and the lower corbels support structure, and lowering device 7 can be used to fall beam after 1 concreting of upper beam and make With.

In the present embodiment, the lowering device 7 and the Left-side support structure, the Right side support structure and the middle part Welding manner is all made of between support construction to be fixedly connected.

As shown in figure 3, the lower bracket 3 is identical with the structure of upper bracket 4 and both for assembly type bracket, the assembling Formula bracket includes the sizing bracket that pre-buried structure, more Pin are fixed on from front to back on the pre-buried structure and multiple tracks in horizontal layout Fining twisted steel 19, the structure of sizing bracket is all the same described in more Pin and is laid in same level, fixed described in every Pin Type bracket be arranged vertically and its with the vertical supporting structure in it is parallel laying, the fining twisted steel 19 with it is described Bracket of being formed is laid in parallel;Sizing bracket includes that horizontal bracket 12 and top are fixed on horizontally-supported bracket 12 described in every Pin The oblique bracket 13 at middle part, the oblique bracket 13 are from top to bottom gradually inclined outwardly;The pre-buried structure includes upper pre-buried anchor box 14 Be located at immediately below upper pre-buried anchor box 14 under pre-buried anchor box 15, the upper pre-buried anchor box 14 and under pre-buried anchor box 15 it is pre-buried In in king-post 2;The outer end of the horizontally-supported bracket 12 is fixed in pre-buried anchor box 14, and the outer end of the oblique bracket 13 is fixed Under in pre-buried anchor box 15, fining twisted steel 19 described in multiple tracks is laid in horizontally-supported bracket 12, the horizontally-supported ox The anchorage that multiple pairs of fining twisted steels 19 are anchored is provided with inside and outside leg 12.

In the present embodiment, it is provided on the horizontally-supported bracket 12 and leads to respectively for what fining twisted steel 19 passed through for multiple Hole, the through-hole are the oblong hole being arranged vertically.

In the present embodiment, two king-posts 2 are that multiple tracks vertical applied force reinforcing bar is provided with inside open tubular column and the two, The anchorage being arranged on the outside of the horizontally-supported bracket 12 is located in the internal cavities of the open tubular column.

Fining twisted steel 19 described in multiple tracks divides multiple rows of multiple row to be laid;Upper pre-buried anchor box 14 pre-buried anchor box 15 under On open the reinforced hole passed through for the vertical applied force reinforcing bar.

In the present embodiment, the sizing bracket and upper pre-buried anchor box 14 and under be all made of welding manner between pre-buried anchor box 15 It is fixedly connected.

In the present embodiment, upper pre-buried anchor box 14 pre-buried anchor box 15 under is all made of steel plate and is process.It is described pre- The cross section for burying anchor box 14 is rectangle, under pre-buried anchor box 15 is including upside steel plate and below the upside steel plate under described Side steel plate, the perpendicular laying of the upside steel plate and the downside steel plate and into being connected as one, the upside steel plate and institute The left and right sides for stating downside steel plate passes through triangular plate and is blocked.

When practice of construction, the upper pre-buried anchor box 14 and under pre-buried anchor box 15 when carrying out casting concrete to king-post 2 It is pre-buried, go deep into the depth inside king-post 2 not less than 30cm.For guarantee king-post 2 main reinforcement (i.e. vertical applied force reinforcing bar) spacing, Upper pre-buried anchor box 14 is provided with reinforced hole under on pre-buried anchor box 15, the reinforced hole is slotted hole, to guarantee that main reinforcement is smoothly worn It crosses.

In the present embodiment, the horizontal bracket 12 and oblique bracket 13 are all made of more I-steel and are spliced.Due to lower ox Leg 3 and upper bracket 4 mainly have horizontal force and vertical force in stress, therefore fining twisted steel 19 is installed on horizontal bracket 12, And carrying out prestretching to fining twisted steel 19 makes it be completely counterbalanced by the horizontal force that lower bracket 3 or upper bracket 4 are subject to, and designs herein It need to only consider that fining twisted steel 19 bears horizontal pull in journey, lower bracket 3 and upper bracket 4 and mixed in actual installation process The contact surface connecting hole of Xtah Crude Clay structure is split into slotted hole (the i.e. described through-hole), and it is horizontal wide that the vertical height of the through-hole is greater than it Degree, prevents fining twisted steel 19 by vertical shear.Therefore the horizontal force that lower bracket 3 and upper bracket 4 are subject to is all by finish rolling screw thread Steel 19 undertakes, and the vertical force of generation is all undertaken by oblique bracket 13, and stress is clear.

It include bracket of being formed described in four Pin in the lower bracket 3 as shown in figure 4, in the present embodiment, it, can when practice of construction According to specific needs, in lower bracket 3 it is included it is described sizing bracket quantity and each Pin described in be formed bracket installation position It adjusts accordingly respectively.

It include bracket of being formed described in three Pin in the upper bracket 4 as shown in figure 5, in the present embodiment, it, can when practice of construction According to specific needs, in upper bracket 4 it is included it is described sizing bracket quantity and each Pin described in be formed bracket installation position It adjusts accordingly respectively.

In stress, the upper bracket 4 is solely subjected to vertical force, and the horizontal pull that upper bracket 4 is subject to uses prestretching finish rolling spiral shell Line steel 19 is offset.

In the present embodiment, the middle bracket 5 includes oblique supporting leg 16, and oblique 16 bottom of supporting leg is supported in lower bracket 3 On, oblique 16 bottom of supporting leg is fixed on the horizontally-supported bracket 12 in lower bracket 3, and the oblique supporting leg 16 is propped up with it The oblique bracket 13 supportted in lower bracket 3 is laid in parallel;It is logical between two oblique supporting legs 16 in middle bracket 5 described in every group Transverse truss 17 is crossed to be fastenedly connected, the transverse truss 17 in horizontal layout and its with the vertical supporting structure in flat Row is laid;The longitudinal connection structure is longitudiual truss 18, and the longitudiual truss 18 is in horizontal layout and itself and transverse truss 17 Perpendicular laying.

In the present embodiment, the oblique supporting leg 16 is spiral steel pipe.The transverse truss 17 includes upper and lower two and is connected to Lateral steel pipe and Duo Gen in middle bracket 5 described in every group between two oblique supporting legs 16 are connected to two lateral steel pipes Between web member.Welding manner is all made of between the transverse direction steel pipe and oblique supporting leg 16 and the web member to be attached.

In the present embodiment, each oblique supporting leg 16 is carried out by transverse connecting rod with the king-post 2 being located on the outside of it It is fastenedly connected, the bearing capacity of oblique supporting leg 16 can be effectively increased in this way.

After the completion of middle bracket 5 described in each group is respectively mounted, to guarantee its stability, it is attached using longitudiual truss 18, and Form Crossing brace.

All upper bracket 4, lower bracket 3 and middle brackets 5 are processed at the scene, and the tower crane transported to 2 side of king-post lifts by crane Position.The upper bracket 4, lower bracket 3 and middle bracket 5 are steel corbel, if construction condition is permitted, be can also be used two The lower bracket 3 of upper bracket 4, two or two 5 groups of middle brackets weld to form an entirety progress integral installation.

In the present embodiment, the spandrel girder 8 is Bailey beam.

A kind of high-altitude long-span heavy duty crossbeam construction method as shown in FIG. 6, comprising the following steps:

Step 1: lower corbels support structure installation: it synchronizes from the bottom to top and two king-posts 2 is carried out in work progress, When two king-posts 2 are constructed to the lower corbels support structure present position, the lower corbels support structure is carried out Installation;

Step 2: upper corbels support structure and the installation of midfoot support structure: constructing to two king-posts 2 on described When corbels support structure present position, the upper corbels support structure is installed;The upper corbels support structure is carried out In installation process, synchronizes and the midfoot support structure is installed;To the upper corbels support structure and the midfoot support After the completion of structure is respectively mounted, the temporary supporting platform is obtained;

Step 3: load-carrying members are set up: setting up the load-carrying members on temporary supporting platform, obtain applying for installation forming Work bracket;

Step 4: pre-pressing bracket: carrying out precompressed to construction bracket described in step 3;

Step 5: upper beam is constructed: the construction bracket completed using precompressed constructs to upper beam 1;

Step 6: support removing: after the completion of the construction of upper beam 1, being removed to the construction bracket.

In the present embodiment, when lower corbels support structure described in step 1 is installed, respectively to the lower corbels support Each lower bracket 3 in structure is installed respectively;The installation method of all lower brackets 3 is all the same;Any one lower bracket 3 When being installed, first upper pre-buried anchor box 14 pre-buried anchor box 15 under of the lower bracket 3 is embedded in respectively in king-post 2, then to this Sizing bracket described in more Pin of lower bracket 3 is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, to multiple tracks institute It states fining twisted steel 19 to be installed respectively, fining twisted steel 19 described in the road Bing Duige carries out tensioning respectively;

When upper corbels support structure described in step 2 is installed, respectively on each in the upper corbels support structure Bracket 4 is installed respectively;The installation method of all upper brackets 4 is all the same;When being installed any one described upper bracket 4, First by the upper pre-buried anchor box 14 of bracket 4 on this and under pre-buried anchor box 15 be embedded in king-post 2 respectively, then on this bracket 4 it is more Sizing bracket described in Pin is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, the finish rolling screw thread described in multiple tracks Steel 19 is installed respectively, and fining twisted steel 19 described in the road Bing Duige carries out tensioning respectively;

It is synchronized from the bottom to top in step 1 and two king-posts 2 is carried out also to need installation to described in two in work progress The interim prestressing apparatus that king-post 2 is reinforced, the interim prestressing apparatus include that multiple tracks is laid in same water from front to back Interim presstressed reinforcing steel 6 in plane, interim presstressed reinforcing steel 6 described in multiple tracks are laid in parallel, interim presstressed reinforcing steel 6 described in per pass Both ends are anchored at respectively on two king-posts 2, are provided on the lateral wall of two king-posts 2 multiple respectively to interim pre- The prestressed anchor that stress rib 6 is anchored;

Before carrying out pre-pressing bracket in step 4, first synchronizes the interim presstressed reinforcing steel 6 described in multiple tracks and carry out tensioning respectively.

The structure of the upper pre-buried pre-buried anchor box 15 under of anchor box 14 is simply and small in size, occupies little space, and lay Mode is flexible, is able to satisfy the construction demand of various upper beams 1.Also, due to upper pre-buried anchor box 14 pre-buried anchor box 15 under On open the reinforced hole passed through for the vertical applied force reinforcing bar, thus can effectively avoid cutting off the vertical applied force reinforcing bar, can protect The construction quality and structural soundness of king-post 2 are demonstrate,proved, and existing construction method is usually both needed to cut off the vertical applied force reinforcing bar.

In the present embodiment, when two king-posts 2 are constructed to the lower corbels support structure present position, to king-post 2 carry out in concreting process, first carry out respectively to upper pre-buried anchor box 14 pre-buried anchor box 15 under of each lower bracket 3 pre-buried; After institute's casting concrete reaches demoulding condition, form removal starts the sizing bracket for installing each lower bracket 3, and king-post 2 continues Normal construction.

In the present embodiment, connected between sizing bracket described in each Pin in each lower bracket 3 using stiffener.Each Pin The bracket end of the sizing bracket is blocked using steel plate, and stiffener and closure steel plate weld the prestretching as fining twisted steel 19 End.Steel plate tiling at the top of the sizing bracket guarantees whole stress.The sizing bracket installs fining twisted steel after being installed 19, while prestretching is carried out, each descend totally 6 fining twisted steels 19 of bracket 3.The tensioning of the fining twisted steel 19 is using oil overhold It draws, total stretching force is preferably the summation for the horizontal force that single lower bracket 3 is subject to.

When the elevation location of the construction of king-post 2 to upper bracket 4, start to install bracket 4, the installation method of upper bracket 4 with The installation method of lower bracket 3 is identical consistent.While installing bracket 4, start bracket 5 in installation.

In the present embodiment, the upper bracket 4, lower bracket 3 and middle bracket 5 are lifted in ground machine-shaping using tower crane, Cable rope auxiliary.

After the upper bracket 4 or the lifting in place of lower bracket 3, is leveled, protected with oblique bracket 13 of the level to left and right width It is consistent to demonstrate,prove oblique 13 absolute altitude of bracket of left and right width.Start bracket 5 in progress after adjustment to weld.

In the present embodiment, after the completion of the upper corbels support structure is respectively mounted with the midfoot support structure, also need to each Fall girder apparatus 7 is installed respectively, while being put more energy into respectively to each fall girder apparatus 7.Bearing beam is installed later, bearing beam along bridge to It arranges 4, is laid at the top of upper bracket 4 and middle bracket 5 respectively.

In the present embodiment, after the completion of the load-carrying members are set up, installation guardrail is also needed.

When carrying out pre-pressing bracket in the present embodiment, in step 4, precompressed is carried out using conventional bridge pre-pressing bracket method.

In the present embodiment, precompressed uses ton packet earth bag, precompressed weight by 1.2 times of 1 casting concrete weight of upper beam into Row precompressed.Before precompressed, 5 sections are divided to lay observation point by cross-bridges direction on spandrel girder 8, each section is along bridge to arrangement 2 Observation point.

Before precompressed, tensioning carried out to the interim prestressing apparatus, stretching force by horizontal thrust suffered by king-post 2 50% into Row applies.After the completion of precompressed, according to each stage observation point variation calculate the construction bracket inelastic deformation and Flexible deformation during loaded, with the Beam Elevation that determination is last

After the completion of release, according to prediction achievement, the bottom elevation of upper beam 1 is adjusted, starts to be laid with bottom plate.Carry out upper beam When 1 beam body construction, upper beam 1 pours in two times, and intensity is up to pre- to part after 60% after the completion of first time concreting Stress carries out pre- tensioning, controls the getting up early Crack Control of 1 concreting of upper beam, and cooperatively holds with the construction bracket Second of concrete construction task is carried on a shoulder pole, the stress of the construction bracket is reduced.

In the present embodiment, after the completion of 1 tensioning of upper beam and mud jacking, start to remove the construction bracket.

When being removed to the construction bracket, constructed using hand fit's tower crane.In the upper beam 1 that construction is completed 4 outriggers of upper arrangement, outrigger use I-steel.

Prestretching is carried out to the load-carrying members of the construction bracket using the beam body of upper beam 1, the beam that falls then is cut off and fills 7 are set, and clears up and cuts off component;Then slowly landed the load-carrying members of the construction bracket using oil overhold, drop to the middle part In support construction and the upper corbels support structure;Then the load-carrying members are dismounted by sequence from top to bottom.Using pulling Jack is mobile toward beam side direction each rod piece, to guarantee that tower crane lifts.After load-carrying members dismounting, then remove the middle part Support construction and the lower corbels support structure.The principle first installed and removed afterwards is followed when dismounting to carry out.

As shown in Figure 7 and Figure 8, four groups of sunpenders, sunpender described in four groups is respectively set at the installation position of the outrigger described in 4 The avris sunpender 20 symmetrically laid including two groups and two groups be respectively symmetrically laid in two groups described in middle part between avris sunpender 20 Sunpender 21, the avris sunpender 20 and middle part sunpender 21 are arranged vertically, and middle part sunpender 21 described in every group includes one The middle part sunpender 21, the middle part sunpender 21 are located on the central axis of upper beam 1, are opened on upper beam 1 there are two supplying respectively The hole for hoist that middle part sunpender 21 passes through, two middle part sunpenders 21 are located on the left and right sides of the midfoot support structure Side, the bottom of two middle part sunpenders 21 is separately fixed at the left and right sides top of the midfoot support structure;Described in every group Avris sunpender 20 includes two avris sunpenders 20 for being symmetrically laid in 1 two sides of upper beam, the difference of avris sunpender 20 described in two groups Positioned at the Left-side support structure and the Right side support superstructure, the bottom of avris sunpender 20 described in two groups is individually fixed in In the Left-side support structure and the Right side support structure.When being removed to the construction bracket, using being hung described in four groups Bar is matched with tower crane with jack and is removed to each component.

The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention In the protection scope of art scheme.

Claims (8)

1. a kind of high-altitude long-span heavy duty construction of beam bracket, it is characterised in that: including lower corbels support structure, be located at it is described under The upper corbels support structure of corbels support superstructure, bottom are supported in the midfoot support knot in the lower corbels support structure Constructed crossbeam carries out the top surface flush and the two group of structure, the upper corbels support structure and the midfoot support structure in pairs The temporary supporting platform of support, constructed crossbeam are the upper beam (1) of Cable-stayed Bridge Pylon, and the upper beam (1) is in horizontal layout And its both ends is respectively supported on two king-posts (2) of the Cable-stayed Bridge Pylon, the upper beam (1) and two king-posts It (2) is reinforced concrete structure;It is erected on the temporary supporting platform and carries out horizontally-supported load-bearing knot to upper beam (1) Structure;The lower corbels support structure includes the lower bracket (3) that multiple groups are laid in from front to back between two king-posts (2), more The structure of the group lower bracket (3) is all the same and it is laid in same level;Lower bracket (3) described in every group include a left side Right two lower brackets (3) being symmetrically laid on same vertical plane, two lower brackets (3) are separately fixed at two towers On the inner sidewall of column (2);The upper corbels support structure includes that multiple groups are laid in from front to back between two king-posts (2) Upper bracket (4), the structure of upper bracket (4) is all the same described in multiple groups and it is laid in same level;Upper ox described in every group Leg (4) includes the two upper brackets (4) being symmetrically laid on same vertical plane in left and right, and two upper brackets (4) are solid respectively It is scheduled on the inner sidewall of two king-posts (2);The outer end of the lower bracket (3) and upper bracket (4) is anchored at king-post (2) On;The midfoot support structure includes the middle bracket (5) that multiple groups are laid in from front to back between two king-posts (2), multiple groups The structure of the middle bracket (5) is all the same and it is laid in same level, and the surface of lower bracket (3) described in every group is equal Middle bracket (5) described in being provided with one group, middle bracket (5) described in every group include that left and right two is symmetrically laid on same vertical plane Middle bracket (5), the bottom of two middle brackets (5) be respectively supported at same group described in described in two in lower bracket (3) On lower bracket (3), two middle brackets (5), which are fastenedly connected, is integrated and is formed a formation vertical supporting structure, Duo Gesuo It states to be fastenedly connected between vertical supporting structure by longitudinal connection structure and be integrated;The lower bracket (3), upper bracket (4) and in Bracket (5) is arranged vertically;
The lower bracket (3) is identical with the structure of upper bracket (4) and both for assembly type bracket, and the assembly type bracket includes Sizing bracket and multiple tracks that pre-buried structure, more Pin are fixed on from front to back on the pre-buried structure are in the finish rolling screw thread of horizontal layout Steel (19), the structure of sizing bracket is all the same described in more Pin and is laid in same level, and sizing bracket described in every Pin is equal It is arranged vertically and it is laid with the vertical supporting structure in parallel, the fining twisted steel (19) and the sizing ox Leg is laid in parallel;Sizing bracket includes that horizontal bracket (12) and top are fixed in horizontally-supported bracket (12) described in every Pin The oblique bracket (13) in portion, the oblique bracket (13) are from top to bottom gradually inclined outwardly;The pre-buried structure includes upper pre-buried anchor box (14) and be located at upper pre-buried anchor box (14) immediately below under pre-buried anchor box (15), the upper pre-buried anchor box (14) and under pre-buried anchor box (15) it is embedded in advance in king-post (2);The outer end of the horizontally-supported bracket (12) is fixed in pre-buried anchor box (14), described oblique Under being fixed in pre-buried anchor box (15), fining twisted steel described in multiple tracks (19) is laid in horizontally-supported ox for the outer end of bracket (13) In leg (12), it is provided with what multiple pairs of fining twisted steels (19) were anchored inside and outside the horizontally-supported bracket (12) Anchorage;Two king-posts (2) are that multiple tracks vertical applied force reinforcing bar is provided with inside open tubular column and the two, described horizontally-supported The anchorage being arranged on the outside of bracket (12) is located in the internal cavities of the open tubular column;Fining twisted steel described in multiple tracks (19) point Multiple rows of multiple row is laid;The upper pre-buried anchor box (14) and under open on pre-buried anchor box (15) and worn for the vertical applied force reinforcing bar The reinforced hole crossed;It is provided on the horizontally-supported bracket (12) for multiple through-holes passed through respectively for fining twisted steel (19), institute Stating through-hole is the oblong hole being arranged vertically, and the vertical height of the through-hole is greater than its horizontal width.
2. a kind of high-altitude long-span heavy duty construction of beam bracket described in accordance with the claim 1, it is characterised in that: the load-bearing knot Structure includes that bearing platform, multiple tracks ride upon distribution beam (9) on the bearing platform, carry out molding construction to upper beam (1) Bed die (10), distribution beam (9) described in multiple tracks is laid in same level;The bearing platform include multiple tracks from front to back Spandrel girder (8), the spandrel girder (8) and the perpendicular laying of vertical supporting structure being laid in same level, it is described Distribution beam (9) and spandrel girder (8) perpendicular laying;The bed die (10) in horizontal layout and its be supported in distribution beam described in multiple tracks (9) on.
3. a kind of high-altitude long-span heavy duty construction of beam bracket according to claim 1 or 2, it is characterised in that: further include To the interim prestressing apparatus that two king-posts (2) are reinforced, the interim prestressing apparatus include multiple tracks from front to back The interim presstressed reinforcing steel (6) being laid in same level, interim presstressed reinforcing steel (6) described in multiple tracks are laid in parallel, per pass institute The both ends for stating interim presstressed reinforcing steel (6) are anchored at respectively on two king-posts (2), on the lateral wall of two king-posts (2) It is provided with multiple prestressed anchors anchored respectively to interim presstressed reinforcing steel (6).
4. a kind of high-altitude long-span heavy duty construction of beam bracket described in accordance with the claim 3, it is characterised in that: described interim pre- Stress device is located above lower bracket (3), and the interim prestressing apparatus is located at the lower outside of middle bracket (5);
It is also provided with from front to back multiple groups stull (11) between two king-posts (2), the structure of stull (11) described in multiple groups is equal Identical and it is laid in same level, stull described in multiple groups (11) is respectively positioned below the lower corbels support structure;Often The group stull (11) include it is multiple be from top to bottom laid in it is same it is vertical on stull (11), each stull (11) Both ends are respectively supported on the inner sidewall of king-post (2);The stull (11) is in horizontal layout and itself and the vertical supporting structure It is laid in parallel.
5. a kind of high-altitude long-span heavy duty construction of beam bracket according to claim 1 or 2, it is characterised in that: two institutes Stating king-post (2) is respectively left side king-post and the right side king-post on the right side of the left side king-post, owning on the left side king-post Upper bracket (4) forms Left-side support structure, and all upper brackets (4) on the right side king-post form Right side support structure, described It is provided in Left-side support structure, the Right side support structure and the midfoot support structure for load-carrying members support Fall girder apparatus (7);The fall girder apparatus (7) is in horizontal layout, the Left-side support structure, the Right side support structure and described All fall girder apparatus (7) being arranged in midfoot support structure are laid in same level, and each fall girder apparatus (7) is equal For the longitudinal bracing device with the perpendicular laying of vertical supporting structure.
6. a kind of high-altitude long-span heavy duty construction of beam bracket described in accordance with the claim 1, it is characterised in that: the middle bracket It (5) include oblique supporting leg (16), oblique supporting leg (16) bottom is supported on lower bracket (3), oblique supporting leg (16) bottom Portion is fixed on the horizontally-supported bracket (12) in lower bracket (3), and the oblique supporting leg (16) supports in lower bracket (3) with it Oblique bracket (13) laid in parallel;Pass through cross between two oblique supporting legs (16) in middle bracket (5) described in every group Be fastenedly connected to truss (17), the transverse truss (17) in horizontal layout and its with the vertical supporting structure in parallel It lays;The longitudinal connection structure is longitudiual truss (18), and the longitudiual truss (18) is in horizontal layout and itself and transverse truss (17) perpendicular laying.
7. a kind of method constructed using construction bracket as described in claim 1 to high-altitude long-span heavy duty crossbeam, special Sign is, method includes the following steps:
Step 1: lower corbels support structure installation: it synchronizes from the bottom to top and two king-posts (2) is carried out in work progress, to When two king-posts (2) are constructed to the lower corbels support structure present position, the lower corbels support structure is carried out Installation;
Step 2: upper corbels support structure and the installation of midfoot support structure: constructing to two king-posts (2) to the upper ox When leg support construction present position, the upper corbels support structure is installed;The upper corbels support structure is pacified During dress, synchronizes and the midfoot support structure is installed;To the upper corbels support structure and the midfoot support knot After the completion of structure is respectively mounted, the temporary supporting platform is obtained;
Step 3: load-carrying members are set up: setting up the load-carrying members on temporary supporting platform, obtain the construction branch of installation forming Frame;
Step 4: pre-pressing bracket: carrying out precompressed to construction bracket described in step 3;
Step 5: upper beam is constructed: the construction bracket completed using precompressed constructs to upper beam (1);
Step 6: support removing: after the completion of upper beam (1) construction, being removed to the construction bracket;
It is upper in upper corbels support structure described in lower bracket (3) and step 2 in lower corbels support structure described in step 1 The structure of bracket (4) is identical and both for assembly type bracket, the assembly type bracket include pre-buried structure, more Pin from front to back The sizing bracket and multiple tracks being fixed on the pre-buried structure are in the fining twisted steel (19) of horizontal layout, ox of being formed described in more Pin The structure of leg is all the same and is laid in same level, sizing bracket described in every Pin be arranged vertically and its and institute It states vertical supporting structure to lay in parallel, the fining twisted steel (19) is laid with the sizing bracket in parallel;Described in every Pin Sizing bracket includes horizontal bracket (12) and top is fixed on the oblique bracket (13) in the middle part of horizontally-supported bracket (12), described oblique Bracket (13) is from top to bottom gradually inclined outwardly;The pre-buried structure include upper pre-buried anchor box (14) and be located at upper pre-buried anchor box (14) pre-buried anchor box (15) under immediately below, the upper pre-buried anchor box (14) and under pre-buried anchor box (15) be embedded in king-post (2) in advance It is interior;The outer end of the horizontally-supported bracket (12) is fixed in pre-buried anchor box (14), and the outer end of the oblique bracket (13) is fixed Under in pre-buried anchor box (15), fining twisted steel described in multiple tracks (19) is laid in horizontally-supported bracket (12), the level The anchorage that multiple pairs of fining twisted steels (19) are anchored is provided with inside and outside support bracket (12);
When lower corbels support structure described in step 1 is installed, respectively to each lower bracket in the lower corbels support structure (3) it is installed respectively;The installation method of all lower brackets (3) is all the same;Any one described lower bracket (3) is installed When, first by the upper pre-buried anchor box (14) of the lower bracket (3) and under pre-buried anchor box (15) be embedded in king-post (2), then to this respectively Sizing bracket described in more Pin of lower bracket (3) is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, to multiple tracks The fining twisted steel (19) is installed respectively, and fining twisted steel described in the road Bing Duige (19) carries out tensioning respectively;
When upper corbels support structure described in step 2 is installed, respectively to each upper bracket in the upper corbels support structure (4) it is installed respectively;The installation method of all upper brackets (4) is all the same;Any one described upper bracket (4) is installed When, first by the upper pre-buried anchor box (14) of bracket on this (4) and under pre-buried anchor box (15) be embedded in king-post (2), then to this respectively Sizing bracket described in more Pin of upper bracket (4) is installed respectively;After the completion of bracket of being formed described in more Pin is respectively mounted, to multiple tracks The fining twisted steel (19) is installed respectively, and fining twisted steel described in the road Bing Duige (19) carries out tensioning respectively.
8. according to the method for claim 7, it is characterised in that: synchronized from the bottom to top in step 1 to two king-posts (2) the interim prestressing apparatus for also needing installation to reinforce two king-posts (2) in work progress is carried out, it is described interim Prestressing apparatus includes the interim presstressed reinforcing steel (6) that multiple tracks is laid in from front to back in same level, interim pre- described in multiple tracks Stress rib (6) is laid in parallel, and the both ends of interim presstressed reinforcing steel (6) described in per pass are anchored at respectively on two king-posts (2), Multiple prestressed anchors anchored respectively to interim presstressed reinforcing steel (6) are provided on the lateral wall of two king-posts (2) Tool;
Before carrying out pre-pressing bracket in step 4, first synchronizes the interim presstressed reinforcing steel (6) described in multiple tracks and carry out tensioning respectively.
CN201611267199.XA 2016-12-31 2016-12-31 A kind of high-altitude long-span heavy duty construction of beam bracket and construction method CN106677070B (en)

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CN107806019A (en) * 2017-11-07 2018-03-16 中交路桥华南工程有限公司 Large-span suspension bridge gate Sarasota construction method
CN108103965B (en) * 2018-01-12 2019-04-09 长沙理工大学 A kind of reinforce uses prestressing force Bailey beam and its construction method
CN109252447A (en) * 2018-09-28 2019-01-22 东莞理工学院 A kind of precompressed operating method of high-altitude king-post overarm brace
CN109440646A (en) * 2018-10-10 2019-03-08 林丹 A kind of pre-buried bracket device of king-post upper beam construction bracket
CN109338869A (en) * 2018-11-28 2019-02-15 中国铁建大桥工程局集团有限公司 Bracket method for synchronously constructing under a kind of Cable stayed Bridge Main Tower
CN109881587A (en) * 2019-03-26 2019-06-14 中铁大桥局集团有限公司 King-tower upper beam bracket integral installation method under a kind of strong wind atmosphere

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100820299B1 (en) * 2007-05-15 2008-04-08 삼성물산 주식회사 Temporary structure and precast concrete beam of pylon setting method using the bracket
CN103452049A (en) * 2013-09-15 2013-12-18 中铁一局集团有限公司 Corbel bracket for cast-in-place concrete construction at top of bridge pier
CN103898836A (en) * 2014-03-03 2014-07-02 中铁港航局集团有限公司 Method for construction of high upper beam steel oblique leg prestress support of H-shaped cable bent tower of cable-stayed bridge
CN104213508A (en) * 2013-09-02 2014-12-17 中铁十六局集团第一工程有限公司 Method for controlling displacement of tower columns through cross braces and external cables
CN204959617U (en) * 2015-09-30 2016-01-13 杭州萧宏建设集团有限公司 A support for supporting template of initial piece of bridge case roof beam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100820299B1 (en) * 2007-05-15 2008-04-08 삼성물산 주식회사 Temporary structure and precast concrete beam of pylon setting method using the bracket
CN104213508A (en) * 2013-09-02 2014-12-17 中铁十六局集团第一工程有限公司 Method for controlling displacement of tower columns through cross braces and external cables
CN103452049A (en) * 2013-09-15 2013-12-18 中铁一局集团有限公司 Corbel bracket for cast-in-place concrete construction at top of bridge pier
CN103898836A (en) * 2014-03-03 2014-07-02 中铁港航局集团有限公司 Method for construction of high upper beam steel oblique leg prestress support of H-shaped cable bent tower of cable-stayed bridge
CN204959617U (en) * 2015-09-30 2016-01-13 杭州萧宏建设集团有限公司 A support for supporting template of initial piece of bridge case roof beam

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