CN109811665A - The installation method of assembled heavy type steel corbel - Google Patents
The installation method of assembled heavy type steel corbel Download PDFInfo
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- CN109811665A CN109811665A CN201910108975.9A CN201910108975A CN109811665A CN 109811665 A CN109811665 A CN 109811665A CN 201910108975 A CN201910108975 A CN 201910108975A CN 109811665 A CN109811665 A CN 109811665A
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Abstract
The present invention provides a kind of installation method of assembled heavy type steel corbel, solve the problems, such as that existing bracket overhead welding operation is difficult, its key points of the technical solution are that the installation method of the assembled heavy type steel corbel includes the following steps: to install the fixing steel plate for offering several location holes on the framework of steel reinforcement of selected engineering interface；Built-in pipe of the installation through the location hole of fixing steel plate；After the completion of the casting concrete process of engineering interface, the bracket main body spliced in advance is docked with fixing steel plate；Primary Location is carried out to bracket main body by the location hole of two corners above fixing steel plate using threaded rod or pin stick；Bracket main body is finally fixed by remaining location hole on fixing steel plate using threaded rod or pin stick.By live a large amount of overhead weldings, the mode for cutting off and being adjusted to back court standard preparing and inspection, field moduleization with the form of construction work modified and assembling is examined, reaching reduces site operation risk, shortens the construction period, and improves the purpose of work efficiency and quality.
Description
Technical field
The present invention relates to science of bridge building field more particularly to a kind of installation methods of assembled heavy type steel corbel.
Background technique
Cable-stayed bridge, Suspension Bridge Tower cast-in-place concrete crossbeam or gooseneck, cantilever casting beam and high pier shaft bent cap, binder etc. are applied
Work mostly uses greatly bracket type load-carrying members, and wherein steel corbel is the key position of total stress system, the effect of steel corbel
It is linking cantilever beam and drop in beam, and transmits the load from drop in beam.Traditional load-carrying members are often taken buries steel in concrete
The mode of plate or fashioned iron carries out site welding steel corbel, and live high-altitude, which is applied, can have many disadvantages in work progress, such as: high missing solder
Operation is connect, construction safety risk is larger；High altitude operation condition is limited, and weldquality is difficult to control；When welding and cutting off temperature compared with
Height, Yi Yinqi concrete cracking are unfavorable for entity quality control etc..
Summary of the invention
The purpose of the present invention is intended to provide a kind of installation method of easy to operate assembled heavy type steel corbel.
To achieve the goals above, the present invention the following technical schemes are provided:
A kind of installation method of assembled heavy type steel corbel, includes the following steps:
Installation offers the fixing steel plate of several location holes on the framework of steel reinforcement of selected engineering interface；
Built-in pipe of the installation through the location hole of the fixing steel plate；
After the completion of the casting concrete process of the engineering interface, the bracket main body and the positioning that will splice in advance
Steel plate is docked；
The bracket main body is carried out just by the location hole of two corners above the fixing steel plate using threaded rod or pin stick
Step positioning；
The bracket main body is carried out finally by remaining location hole on the fixing steel plate using threaded rod or pin stick
It is fixed.
Further setting: the medial and lateral horizontal bar of the fixing steel plate and the framework of steel reinforcement is welded and fixed.
Further setting: before casting concrete, the both ends of mounted built-in pipe are sealed.
Further setting: the location hole is equipped with first positioning hole and second location hole, and the first positioning hole is set to institute
The top and bottom and for passing through for the threaded rod of fixing steel plate are stated, the second location hole is set to the fixing steel plate
Middle part and for passing through for the pin stick.
Further setting: the caliber of the built-in pipe is matched with the aperture size for the location hole being correspondingly connected with.
Further setting: the bracket main body include the corresponding location hole offer the main bearing plate of mounting hole, top plate,
Two pieces of otic placodes and several stiffened panels for being used to reinforce bracket main structure stability positioned at top plate two sides, the main bearing plate,
By welding to connect between top plate, otic placode and stiffened panel.
Further setting: the caliber difference of the corresponding built-in pipe of the pin stick diameter be less than the screw thread shank diameter with
The difference of the caliber of its corresponding built-in pipe.
Further setting: the bracket main body is lifted by lifting appliance to pre-buried close to selected engineering interface
The position for stating fixing steel plate, accurately docks the bracket main body and the fixing steel plate using jack auxiliary construction, it is described fall
The upper end of chain is connect with the main reinforcement of the framework of steel reinforcement of the engineering interface.
Further setting: mounting hole and fixing steel plate the top two corners of two corners above bracket main body are passed through using threaded rod
Location hole simultaneously makes the bracket main body obtain Primary Location.
Further setting: it respectively corresponds in the mounting hole of the bracket and the location hole of fixing steel plate and is inserted into remaining screw thread
Bar and pin stick, by imposing nut matched with its on threaded rod and screwing so that bracket main body is poured with the engineering interface
Concrete surface push against with the fixation bracket main body.
Further setting:, can be to described before the bracket main body is pushed against with the concrete surface that the engineering interface pours
Concrete surface and the joint face of the bracket main body are cleared up.
Compared with prior art, the solution of the invention has the following advantages:
1. in the installation method of assembled heavy type steel corbel of the invention, by live a large amount of overhead weldings, examine cut off with
The form of construction work of modification is adjusted to the mode that back court standard preparing and inspection, field moduleization assemble, and it is existing to reach reduction
Field construction risk, shortens the construction period, and reduces cost, improves the purpose of work efficiency and quality.
2. in the installation method of assembled heavy type steel corbel of the invention, by being limited during installing bracket main body
The distance of shaft centers and restriction pin stick of threaded rod and pin stick and the gap of the built-in pipe for its insertion less than threaded rod and supply its insertion
The gap of built-in pipe acted in bracket main body so that the vertical bearing capacity acted in bracket main body is undertaken by pin stick
Vertical moment of flexure, which is put up a resistance to balance by horizontal finish rolling threaded rod, makes concrete give full play to the high characteristic of compression strength, the screw thread
Bar can give full play to the high characteristic of tensile strength, and stress clear and definite, facilitate design and checking computations.
3. in the installation method of assembled heavy type steel corbel of the invention, bracket main body is removed without being cut, to ox
Leg main body self structure is not damaged, and will not change the structure size of bracket main body, ensure that the quality of bracket main body in turn
It can be used in turn, and the method for dismounting of bracket main body, that is, installation method carries out backward, it is convenient to remove.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the installation method of assembled heavy type steel corbel of the invention；
Fig. 2 is the bracket main body and built-in pipe of assembled heavy type steel corbel of the invention, threaded rod and the connection side for selling stick
The schematic diagram of formula；
Fig. 3 is the structural schematic diagram of the bracket main body of assembled heavy type steel corbel of the invention.
In figure, 1, built-in pipe；11, fixing steel plate；2, bracket main body；21, main bearing plate；211, the first mounting hole；212,
Second mounting hole；22, top plate；23, vertical reinforced plate；24, transversal reinforcement plate；25, otic placode；26, stiffener plate；3, threaded rod；
31, nut；4, stick is sold.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
The present invention relates to a kind of installation methods of assembled heavy type steel corbel, are mainly used in science of bridge building field, use
Support construction of the assembled heavy type steel corbel as bearing frame, the high temperature for carrying out high-altitude without bracket installation site are freezed and are cut off
Operation improves construction effect.Meanwhile bracket main body is Ke Xunhuanliyong, to reduce construction cost.
Referring to Figure 1 to Fig. 3, the installation method of assembled heavy type steel corbel of the invention includes the following steps:
S001, installation offers the fixing steel plate of several location holes on the framework of steel reinforcement of selected engineering interface.
Measurement group personnel reinforcing bar the binding stage to built-in location steel plate 11 carry out accurate settingout, and by its with it is selected
The medial and lateral horizontal bar of the framework of steel reinforcement of engineering interface is welded and fixed.
Preferably, the fixing steel plate 11 is using the sheet metal with a thickness of 6mm, and offers on the fixing steel plate 11
Multiple location holes (not illustrating in figure, similarly hereinafter) are for subsequent installation use.
And present invention can apply to be provided in straining beam structure, thus the present embodiment by engineering interface be chosen to be Sarasota with
Carry out expansion explanation.
S002, installation run through the built-in pipe 1 of the location hole of the fixing steel plate 11.
Built-in pipe 1 is installed according to the above-mentioned fixing steel plate 11 fixed with framework of steel reinforcement, the built-in pipe 1 runs through institute
The location hole of fixing steel plate 11 is stated to position, and passes through fixing steel plate 11 at the both ends of the built-in pipe 1 and is positioned, is made
The installation error for obtaining built-in pipe 1 controls in ± 1mm.And the location hole includes first positioning hole and second location hole, and
And the pore size range of first positioning hole is 62-64mm, the pore size range of the second location hole is 112-114mm,
The caliber of the built-in pipe 1 is matched with the aperture size for the location hole being correspondingly connected with.
Preferably, the built-in pipe 1 in the present embodiment is seamless steel pipe, and length is 1500mm.
The concreting process that framework of steel reinforcement is carried out after installing fixing steel plate 11 and built-in pipe 1, in corresponding segment
1 both ends of built-in pipe must be clogged using geotextiles before concreting, and the opening of the built-in pipe 1 is also needed using bubble
Foam glue+sealant tape is sealed processing, prevents the infiltration of the cement slurry in casting process.
In addition, the built-in pipe 1 is embedded in the concrete body of king-post in advance with fixing steel plate 11, can be formed in concrete
The reinforcement structure in portion, to enhance fastness and crushing resistance of the concrete structure of king-post etc..
S003, after the completion of the casting concrete process of the engineering interface, by the bracket main body 2 spliced and institute in advance
Fixing steel plate 11 is stated to be docked.
The bracket main body 2 can first carry out overall processing before lifting installation, first look for bearing capacity and meet processing request
Place, and measured by flatness of the measurement group personnel to place, levelling of the land selected to go out to carry out parts assembling welding.
Wherein, the bracket main body 2 includes main bearing plate 21, with the welding of main bearing plate 21 and for the top of support bearing frame
The outer wall of plate 22 and stiffened panel, the main bearing plate 21 and king-post is closely affixed, and the top plate 22 is set perpendicular to main bearing plate 21
Set, the stiffened panel includes vertical reinforced plate 23 and transversal reinforcement plate 24, the vertical reinforced plate 23 be set to main bearing plate 21 with
To play the role of reinforcing main bearing plate 21 and 22 bonding strength of top plate between the bottom surface of top plate 22, the transversal reinforcement plate 24 is flat
Row top plate 22 is arranged and connect with vertical reinforced plate 23.Further, the vertical reinforced plate 23 is equipped with three pieces, and described in three pieces
Vertical reinforced plate 23 is arranged in parallel, and the transversal reinforcement plate 24 is welded with three blocks of vertical reinforced plates 23.
The two sides of the top surface of the top plate 22 are equipped with two pieces of parallel otic placodes 25, and bearing frame frame is in the top plate of bracket main body 2
On 22 and it is located between two pieces of otic placodes 25, to play the role of limiting load-bearing rack position.Between the otic placode 25 and top plate 22
Welding is equipped with stiffener plate 26, while stiffener plate 26 also is provided between the top plate 22 and vertical reinforced plate 23.So that single
The bearing capacity of bracket main body 2 is up to 800KN, and the heavy 0.5t of single bracket main body 2.
Preferably, the main bearing plate 21 in the present embodiment is the thick steel plate with a thickness of 40mm, and the top plate 22 uses thickness
For the thick steel plate of 30mm, the vertical reinforced plate 23, transversal reinforcement plate 24 and two pieces of otic placodes 25 are all made of the thickness with a thickness of 20mm
Steel plate, and steel plate used by bracket main body 2 is Q35 steel in the present embodiment.By by main bearing plate 21, top plate 22,
Vertical reinforced plate 23, transversal reinforcement plate 24 and the welding of stiffener plate 26 form 2 structure of bracket main body, and weld seam with a thickness of
The fusion length of 10mm, top plate 22 and vertical reinforced plate 23 and main bearing plate 21 is 500mm.
In the actual construction process, it is by the area that weld seam can be calculated in the thickness and length of above-mentioned weld seam
20000mm2, then the shearing strength of weld seam110MPa is that the maximum that weld seam is allowed is anti-
Intensity is cut, code requirement is met.
In addition, in a pre-installation, the bracket main body 2 and the face that contacts with each other of king-post can be cleared up, it is described to ensure
The main bearing plate 21 of bracket main body 2 can be closely affixed with the side wall of king-post.
During installation, bracket main body 2 is transported to being embedded near the position of fixing steel plate 11 by tower lifting machine, with
Afterwards using the jack auxiliary construction of 1t accurately to dock the bracket main body 2 and the fixing steel plate 11, and the jack
Upper end and king-post framework of steel reinforcement main reinforcement connect, to ensure the stability of jack.
S004, using threaded rod 3 or pin stick 4 by the location hole of the 11 top two corners of fixing steel plate to the bracket master
Body 2 carries out Primary Location.
S005, using threaded rod 3 or pin stick 4 by remaining location hole on the fixing steel plate 11 to the bracket main body
2 are finally fixed.
By the way that threaded rod 3 and pin stick 4 are passed through bracket main body 2 and are inserted into corresponding built-in pipe 1, to realize the ox
The positioning and fixation of leg main body 2, and horizontal tension member of the threaded rod 3 as bracket main body 2,4 conduct of pin stick
The main load-carrying members of bracket main body 2, to improve the bearing capacity and stability of the bracket main body 2.
Wherein, the threaded rod 3 uses diameter for the finish rolling threaded rod of the PSB830 of 32mm grade, the length of the threaded rod 3
Degree is greater than the length of built-in pipe 1, and the extended built-in pipe 1 in end of threaded rod 3, while setting on the end of the built-in pipe 1
Have can nut 31 engaged therewith, so that it is offseted with bracket main body 2 with by bracket master in the nut 31 on threaded rod 3 by screwing
Body 2 is pushed against with king-post side wall and is closely affixed, to realize the effect for pre-tighten to bracket main body 2 anchoring, and is guaranteed
It is not subjected to displacement after 2 stress of bracket main body and bracket main body 2 is caused to loosen, while the protruded length of threaded rod 3 can basis
31 construction requirement of nut at its both ends is reserved.
The pin stick uses diameter for the 45# steel pin stick of 100mm, and the length of the pin stick 4 is greater than the length of the built-in pipe 1
Degree, and the pin stick 4 exposes to the length in 2 outside of bracket main body preferably in 10cm or more.And described in the pin stick 4 is used as
The vertical load-carrying members of bracket main body 2, area of section A=3.14 × 50 × 50=7850mm2, shear-carrying capacity:
Wherein τ is pin stick 4
Shear stress allowable.
The installation being correspondingly arranged with the location hole of fixing steel plate 11 is also provided on the main bearing plate 21 of the bracket main body 2
Hole, and the size of mounting hole is matched with the size dimension of location hole, the mounting hole includes the first installation passed through for threaded rod 3
The second mounting hole 212 that hole 211 and supply and marketing stick 4 pass through there are six first mounting hole 211 is set, is respectively arranged on the master and holds
The top and bottom of weight plate 21, second mounting hole 212 is equipped with two and is located at the middle part of the main bearing plate 21, due to fixed
Position steel plate 11 location hole correspond to bracket main body 2 mounting hole setting, i.e., connect with fixing steel plate 11 for threaded rod 3 insertion
Built-in pipe 1 is equipped with the six roots of sensation, and the built-in pipe 1 that supply and marketing stick 4 is inserted into is equipped with two.
Wherein, for threaded rod 3 be inserted into built-in pipe 1 use diameter for 63.5mm, with a thickness of the seamless steel pipe of 3mm, supply and marketing
The built-in pipe 1 that stick 4 is inserted into use diameter for 114mm, with a thickness of the seamless steel pipe of 4mm, that is, it is corresponding pre-buried to sell 4 diameter of stick
The difference of seamless steel pipe internal diameter is less than the difference of the corresponding pre-buried seamless steel pipe of finish rolling screw thread shank diameter.And seamless steel pipe
Between be accurately positioned by fixing steel plate 11 so that axle center between the threaded rod 3 in insertion built-in pipe 1 and pin stick 4
Distance range is 290-300mm, at the same make assembled bearing frame act on the bracket main body 2 top plate 22 Resultant force bias
It is 255-265mm away from range size, it is preferable that the axle center of the threaded rod 3 in the present embodiment is at a distance from the axle center of pin stick 4
295mm, the eccentricity that assembled bearing frame acts on the Resultant force of the top plate 22 of bracket main body 2 is 260mm.It is set by above structure
It sets, the pin stick 4 and the gap for the seamless steel pipe of its insertion are less than the threaded rod 3 and between the seamless steel pipe of its insertion
Gap, then when being under pressure, the pin stick 4 is contacted prior to the threaded rod 3 with corresponding seamless steel pipe the bracket main body 2,
So that the vertical bearing capacity acted in bracket main body 2 can be undertaken by steel pin stick, act on vertical moment of flexure in bracket main body 2 by
Horizontal finish rolling threaded rod is put up a resistance balance, so that concrete is given full play to the high characteristic of compression strength, the threaded rod 3 can be abundant
The high characteristic of tensile strength, and stress clear and definite are played, design and checking computations are facilitated.
Horizontal tension member of the threaded rod 3 as the bracket main body 2, the bearing capacity of the single bracket main body 2
For 800KN, then the horizontal pull of the threaded rod 3:
Meet specification to want
It asks.4 refer to four threaded rods 3,804mm at the top of bracket main body 2 in above-mentioned calculation formula2For the sectional area of threaded rod 3,
830MPa is the tensile stress that corresponding model finish rolling threaded rod is allowed.
During the installation process, the first mounting hole of the 2 top two corners of bracket main body is passed through first with the threaded rod 3
211 and 11 top two corners of fixing steel plate location hole so that the position of the bracket main body 2 obtains Primary Location.
Then the pin stick 4 and remaining threaded rod 3 are inserted into corresponding mounting hole, and on the threaded rod 3
Bracket main body 2 and king-post are pushed against and are fixed by nut 31, to realize fixing and supporting between the bracket main body 2 and king-post.
After assembled heavy type steel corbel is installed, load-bearing frame body can be built using it as load-carrying members.In assembly
After the completion of load-bearing frame body is practical, need first the load-bearing frame body built be removed, then according to the erection sequence of bracket main body 2 with
Inverted sequence successively removes finish rolling threaded rod, steel pin stick and bracket main body 2, and can be by the finish rolling threaded rod, steel pin stick and bracket of dismounting
Main body 2 is transferred to next procedure and is used in turn.
In addition, in other embodiments, the threaded rod 3 and different number of different number can be arranged according to practice of construction situation
Pin stick 4, and carry out the force analysis of structure, change the distance of shaft centers of threaded rod 3 and pin stick 4, concrete can be given full play to
And the respective characteristic of steel.
The installation method of assembled heavy type steel corbel of the invention breaks the installation method of conventional on-site welding steel corbel, adopts
Standardized designs are taken, steel corbel is unified processing and fabricating by professional steel construction factory and examined, and structure is secure safely；Carry out module
Change construction, built-in fitting is expected off field after reunification, and scene is using positioning modulus method assembling, and construction efficiency is higher and precision is guaranteed；Science
Structural stress analysis is rationally carried out, concrete and the respective characteristic of steel can be given full play to；Fully assembled form of construction work is taken, scene
Welding and cut off operation avoid high altitude operation, while being conducive to concrete solid and appearance quality trait and safety and environmental protection, take
Support construction of the assembled heavy type steel corbel as assembled bearing frame by live a large amount of overhead weldings, is examined and is cut off and modification
Form of construction work is adjusted to the mode that back court standard preparing and inspection, field moduleization assemble, and reaches reduction site operation
Risk, the purpose shorten the construction period, reduce cost, improving work efficiency and quality.It after being processed and formed at one time, is used in turn, saves repeatedly
Resource, lower cost.
For the feasibility for verifying assembled heavy type steel corbel, simulated experiment is carried out according to the practical king-post construction operating condition in scene.
Assembled steel bracket structure is safe and reliable during assembly by simulated experiment to verify bearing frame, it is special to steel bracket structure from
Intensity, rigidity and stability etc. are tested outside the venue, check whether it is consistent with the calculated results.
Specific experiment includes the following steps:
(1) according to king-post bar construction, assembling reinforcement, single structure is having a size of 2.6 × 2 × 1.5m, wherein upper king-post strut mark
Quasi- segment wall thickness is 1.5m；
(2) pre-buried structure of pre-buried steel corbel and load-bearing back-pressure beam；
(3) installation template；
(4) casting concrete；
(5) after concrete meets construction intensity, installation steel corbel, bearing frame and back-pressure shoulder pole girder and jack；
(6) jack, back-pressure are debugged.
In order to apply specified load above steel corbel, using 100T jack as back-pressure equipment, and by design carrying
10%, 50%, 75%, 100% and 120% multistage loadings of power 80t survey the absolute altitude of bracket main body 2 after every grade of load to examine
Look into the deformation of bracket main body 2.
Through testing, the arrangement of multistage loadings back-pressure measured data is as follows:
Through testing, after applying specified load, the deformation deflection of bracket main body 2 is all satisfied design specification requirement.It develops
Assembled heavy type steel corbel is applicable to the construction of upper king-post strut gooseneck bearing frame.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of installation method of assembled heavy type steel corbel, which comprises the steps of:
Installation offers the fixing steel plate of several location holes on the framework of steel reinforcement of selected engineering interface；
Built-in pipe of the installation through the location hole of the fixing steel plate；
After the completion of the casting concrete process of the engineering interface, by the bracket main body spliced in advance and the fixing steel plate
It is docked；
It is tentatively fixed to bracket main body progress by the location hole of two corners above the fixing steel plate using threaded rod or pin stick
Position；
The bracket main body is finally fixed by remaining location hole on the fixing steel plate using threaded rod or pin stick.
2. the installation method of assembled heavy type steel corbel according to claim 1, which is characterized in that the fixing steel plate with
The medial and lateral horizontal bar of the framework of steel reinforcement is welded and fixed.
3. the installation method of assembled heavy type steel corbel according to claim 1, which is characterized in that casting concrete it
Before, the both ends of mounted built-in pipe are sealed.
4. the installation method of assembled heavy type steel corbel according to claim 1, which is characterized in that the location hole is equipped with
First positioning hole and second location hole, the first positioning hole is set on the top of the fixing steel plate and bottom and for described in confession
Threaded rod passes through, and the second location hole is set to the middle part of the fixing steel plate and for passing through for the pin stick.
5. the installation method of assembled heavy type steel corbel according to claim 4, which is characterized in that the pipe of the built-in pipe
Diameter is matched with the aperture size for the location hole being correspondingly connected with.
6. the installation method of assembled heavy type steel corbel according to claim 4, which is characterized in that the bracket main body packet
Include the corresponding location hole offer the main bearing plate of mounting hole, top plate, positioned at top plate two sides two pieces of otic placodes and several be used for
Reinforce bracket main structure stability stiffened panel, between the main bearing plate, top plate, otic placode and stiffened panel by welding with
Connection.
7. the installation method of assembled heavy type steel corbel according to claim 6, which is characterized in that the pin stick diameter with
The caliber difference of its corresponding built-in pipe is less than the difference of the caliber of the corresponding built-in pipe of the screw thread shank diameter.
8. the installation method of assembled heavy type steel corbel according to claim 1, which is characterized in that the bracket main body is logical
It crosses lifting appliance to lift to the position for being embedded with the fixing steel plate close to selected engineering interface, utilizes jack auxiliary construction
Accurately to dock the bracket main body and the fixing steel plate, the upper end of the jack and the framework of steel reinforcement of the engineering interface
Main reinforcement connection.
9. the installation method of assembled heavy type steel corbel according to claim 4, which is characterized in that passed through using threaded rod
The location hole of two corners and to obtain the bracket main body tentatively fixed above the mounting hole and fixing steel plate of two corners above bracket main body
Position.
10. the installation method of assembled heavy type steel corbel according to claim 9, which is characterized in that respectively correspond described
Be inserted into the mounting hole of bracket and the location hole of fixing steel plate remaining threaded rod and pin stick, by imposed on threaded rod and its
Matched nut simultaneously screws so that the concrete surface that bracket main body and the engineering interface pour is pushed against with the fixation bracket
Main body.
11. the installation method of assembled heavy type steel corbel according to claim 10, which is characterized in that the bracket main body
It, can be to the joint face of the concrete surface and the bracket main body before being pushed against with the concrete surface that the engineering interface pours
It is cleared up.
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| CN110438902A (en) * | 2019-07-16 | 2019-11-12 | 中交一公局第二工程有限公司 | A kind of assembled load-bearing bracket |
| CN111380754A (en) * | 2020-05-12 | 2020-07-07 | 广东工业大学 | Slot type bias voltage experimental device |
| CN114941283A (en) * | 2022-05-31 | 2022-08-26 | 中交路桥建设有限公司 | Bearing bracket |
| CN115012636A (en) * | 2022-07-14 | 2022-09-06 | 中建三局第一建设工程有限责任公司 | Bracket supporting and jacking formwork system and method |
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