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.
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.