CN116122169B - Steel plate composite beams and construction methods - Google Patents
Steel plate composite beams and construction methodsInfo
- Publication number
- CN116122169B CN116122169B CN202310149094.8A CN202310149094A CN116122169B CN 116122169 B CN116122169 B CN 116122169B CN 202310149094 A CN202310149094 A CN 202310149094A CN 116122169 B CN116122169 B CN 116122169B
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- plate
- steel
- bridge deck
- fixing
- jig
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明涉及一种钢板组合梁及施工方法，主梁拼接利用组拼式钢梁拼装胎架；预制桥面板钢筋绑扎利用组拼式钢筋胎架；采用可拆卸式桥面板快速支模体系；设置预制桥面板精确落位辅助装置；湿接缝钢筋设置定位装置；设置环氧砂浆精确铺设装置；采用自制的环氧砂浆刮平刀快速涂抹。本发明的有益效果是：本发明设置组拼式钢梁拼装胎架，现场拼装方便，将主梁间隔布置在侧向限位柱的钢梁限位槽内，提高了钢梁的组拼效率和组拼精度；利用横向梳齿板和纵向梳齿板对钢筋间距进行定位，有效降低了预制桥面板钢筋绑扎难度；设置预制桥面板落位辅助装置提高了预制桥面板的落位精度；设置环氧砂浆铺设装置，有效提高了环氧砂浆铺设精度和效率。
This invention relates to a steel plate composite beam and its construction method. The main beam splicing utilizes an assembly-type steel beam jig; the precast bridge deck reinforcement binding utilizes an assembly-type reinforcement jig; a detachable bridge deck rapid formwork system is employed; a precise positioning auxiliary device for the precast bridge deck is included; a positioning device for the wet joint reinforcement is provided; an epoxy mortar precise laying device is provided; and a self-made epoxy mortar squeegee is used for rapid application. The beneficial effects of this invention are: the assembly-type steel beam jig facilitates on-site assembly; the main beams are spaced within the steel beam positioning grooves of the lateral limiting columns, improving the assembly efficiency and accuracy of the steel beams; the use of transverse and longitudinal comb plates to position the reinforcement spacing effectively reduces the difficulty of binding the precast bridge deck reinforcement; the precast bridge deck positioning auxiliary device improves the positioning accuracy of the precast bridge deck; and the epoxy mortar laying device effectively improves the accuracy and efficiency of epoxy mortar laying.
Description
Technical Field
The invention relates to a bridge construction system, in particular to a steel plate composite beam and a construction method.
Background
With the development of society and economy, construction technology based on standardization, assembly and informatization has become the first choice in construction of civil buildings and transportation facilities. For the bridge field, a bridge rapid construction technology based on a prefabrication assembly technology is adopted, and is a construction method for constructing a middle-small span bridge. The steel plate composite beam is a composite beam formed by combining a prefabricated bridge deck and an I-shaped steel beam. The steel plate composite beam structure is favorable for saving construction period, improving mechanization and industrialization of production and accelerating construction progress. However, the steel plate composite beam also has a plurality of difficulties in the construction process, such as high steel beam splicing difficulty, difficult positioning of wet joint steel bars, low reuse rate of a prefabricated bridge deck template system, low positioning precision of a prefabricated bridge deck slab and the like, and the construction process of the steel plate composite beam needs to be strictly controlled and improved.
In summary, aiming at the steel plate composite beam construction system, the steel plate composite beam with high construction speed, high formwork system reuse rate and high prefabricated bridge deck landing precision and the construction method are very important.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a steel plate composite beam and a construction method.
The steel plate composite beam comprises a spliced steel beam splicing jig, a spliced steel bar jig, a detachable bridge deck rapid formwork system, a prefabricated bridge deck accurate placement auxiliary device, a wet joint steel bar setting and positioning device, an epoxy mortar accurate laying device and an epoxy mortar leveling knife;
the assembly type steel beam assembly jig frame comprises lateral limit posts, wherein the lateral limit posts are arranged on two sides of the assembly type steel beam assembly jig frame, and steel beam limit grooves are formed in the lateral limit posts;
The assembled steel bar jig comprises transverse comb plates and longitudinal comb plates, wherein the transverse comb plates are provided with steel bar limiting grooves;
the detachable bridge deck plate rapid formwork supporting system comprises a transverse comb plate, a flat bottom die, an end die and wedge-shaped adjusting blocks, wherein the transverse comb plate and the end die are arranged around the flat bottom die, and the wedge-shaped adjusting blocks are welded above the flat bottom die;
the accurate positioning auxiliary device of the prefabricated bridge deck comprises a limit groove and guide channel steel, wherein the limit groove is fixedly connected with the main beam;
The wet joint steel bar setting and positioning device comprises an upper grooving connecting plate and a lower grooving connecting plate, wherein the upper grooving connecting plate and the lower grooving connecting plate are connected with a pressing plate through temporary fixing hooks, and the upper grooving connecting plate and the lower grooving connecting plate are provided with upper layer steel bar limiting holes and bottom layer steel bar limiting holes.
The combined steel beam spliced jig frame is characterized by comprising a vertical jig frame support, a transverse jig frame support, an inclined jig frame support, right-angle connecting pieces, inclined stay fixing plates, a bracket arm underframe and fixing bolts, wherein the bracket arm underframe is welded at the bottom of the vertical jig frame support and is connected with the ground through the fixing bolts, the vertical jig frame support and the transverse jig frame support are fixed through the right-angle connecting pieces, the fixing bolts are arranged on the right-angle connecting pieces, the inclined jig frame support is further arranged between the vertical jig frame support and the transverse jig frame support and is in reinforcing connection, two ends of the inclined jig frame support are respectively fixed with the vertical jig frame support and the transverse jig frame support through the inclined stay fixing plates, and the lateral limiting columns are fixed with the transverse jig frame support through the right-angle connecting pieces.
The assembly type steel bar jig frame is characterized by comprising supporting columns, longitudinal comb plate fixing grooves, transverse supports, jig frame bottom plates, longitudinal fixing plates and clamping grooves, wherein the jig frame bottom plates are symmetrically arranged left and right, the jig frame bottom plates are connected through transverse supports in a reinforcing mode, the supporting columns are arranged between the jig frame bottom plates and the transverse comb plates and are fixed through right-angle connecting pieces, fixing bolts are arranged on the right-angle connecting pieces, the longitudinal comb plate fixing grooves are formed in the transverse comb plates, the longitudinal comb plate fixing grooves on the left and right side transverse comb plates are symmetrically arranged, the left and right side transverse comb plates are connected through the longitudinal fixing plates, the clamping grooves are further formed in the longitudinal comb plates, and the longitudinal comb plates are fixedly connected with the longitudinal comb plate fixing grooves through the clamping grooves.
The detachable bridge deck plate rapid formwork supporting system comprises an inclined strut fixing plate, fixing bolts, a bottom die vertical support, a bottom die lateral support and a bottom die inclined strut, wherein the lower portion of a flat bottom die is fixed with the ground through the bottom die vertical support, the bottom of a transverse comb plate is fixedly connected with the flat bottom die through the fixing bolts, the bottom of an end mold is fixedly connected with the flat bottom die through the fixing bolts, the transverse comb plate is connected with the flat bottom die through the bottom die lateral support and the bottom die inclined strut reinforcing connection, the inclined strut fixing plates are welded at the two ends of the bottom die inclined strut respectively, and the inclined strut fixing plates are connected with the transverse comb plate or the bottom die lateral support through the fixing bolts.
The accurate positioning auxiliary device for the prefabricated bridge deck comprises fixing bolts, vertical limiting plates, first fixing connecting plates and transverse limiting plates, wherein the vertical limiting plates are symmetrically arranged at two ends of the transverse limiting plates in a left-right mode, limiting grooves are formed in the middle of the transverse limiting plates, one side of each vertical limiting plate is welded with the first fixing connecting plate, the first fixing connecting plates are connected with a main beam through the fixing bolts, the prefabricated bridge deck is fixedly connected with guide channel steel through the fixing bolts, and the guide channel steel falls into the limiting grooves.
The wet joint steel bar setting positioning device is preferable, the wet joint steel bar setting positioning device further comprises a reserved hook hole, temporary fixing hooks are arranged on the upper slotted connecting plate and the lower slotted connecting plate through the reserved hook hole, the upper ends of the temporary fixing hooks are connected with the pressing plate, and the top and the bottom of the upper slotted connecting plate and the lower slotted connecting plate are respectively provided with an upper layer steel bar limiting hole and a bottom layer steel bar limiting hole.
The epoxy mortar accurate laying device comprises a displacement adjusting shaft, a sliding rail, a sliding block, a sliding rail supporting column, channel steel right-angle connecting pieces, epoxy mortar and a sliding rail fixing plate, wherein the left side and the right side of the sliding rail supporting column are symmetrically arranged, the lower end of the sliding rail supporting column is provided with the channel steel right-angle connecting pieces, the channel steel right-angle connecting pieces are connected with a cross beam through fixing bolts, the sliding rail fixing plate is fixed with the sliding rail supporting column through bolts, the sliding rail fixing plate is provided with sliding rails, the sliding rail is provided with the displacement adjusting shafts at intervals, and the displacement adjusting shafts are connected with the sliding rail through the sliding block.
The epoxy mortar leveling knife comprises an epoxy mortar storage tank, a blade, an epoxy mortar output port, an epoxy mortar conveying pipe, a valve connecting rod, a valve opening and closing plate, a valve, a handle and a supporting plate, wherein the handle is welded on one side of the supporting plate, the epoxy mortar storage tank is arranged above the supporting plate, epoxy mortar is stored in the epoxy mortar storage tank, the upper end of the epoxy mortar conveying pipe is connected with the bottom of the epoxy mortar storage tank, the lower end of the epoxy mortar conveying pipe is flush with the blade, the valve opening and closing plate is arranged in the epoxy mortar conveying pipe and is connected with the valve through the valve connecting rod, and the angle of the valve opening and closing plate is adjusted to change along with the rotation of the valve.
The construction method of the steel plate composite beam comprises the following steps:
Firstly, assembling steel plate composite beams by utilizing assembled steel beam assembling jig frames, namely installing the assembled steel beam assembling jig frames, wherein the main beams are arranged in steel beam limiting grooves of lateral limiting columns at intervals;
Hoisting construction of the steel plate composite beam, namely hoisting the steel plate composite beam by adopting a single longitudinal beam whole span one by one hoisting method and using an automobile crane, wherein the hoisting sequence of the steel plate composite beam Liang Zongliang is that an inner side beam, a middle beam and an outer side beam are arranged;
Step three, binding the steel bars, namely installing a spliced steel bar jig, positioning the steel bar spacing by using a transverse comb plate and a longitudinal comb plate, and binding the steel bars of the prefabricated bridge deck;
Fourthly, placing the reinforcement cage into a mould and pouring the bridge deck slab, namely after installing a detachable bridge deck slab formwork system, aligning and lowering the transverse reinforcement and the transverse comb plate to enable the reinforcement cage to be placed into the mould;
step five, epoxy mortar paving, namely installing an epoxy mortar paving device, adjusting the position of a displacement adjusting shaft by utilizing a sliding block to realize accurate paving of epoxy mortar, adopting an epoxy mortar scraper to assist paving, and adjusting the conveying of the epoxy mortar by a valve;
step six, accurately positioning the bridge deck, namely positioning the guide channel steel in the limiting groove by hoisting the bridge deck by utilizing the accurate positioning auxiliary device of the prefabricated bridge deck;
and step seven, wet joint construction, namely installing a wet joint reinforcing steel bar setting positioning device, positioning the wet joint reinforcing steel bar, fixing a wet joint template by adopting a steel cable and a pressing plate, and pouring concrete.
The method comprises the steps of adopting a bamboo plywood as a bottom die of a wet joint, arranging a plastic sleeve on a steel cable, arranging second fixed connecting plates at two ends of a pressing plate, arranging an embedded positioning plate on a prefabricated bridge deck, arranging an embedded inserting rod on the embedded positioning plate, connecting the embedded positioning plate with the second fixed connecting plates through a fixed bolt, pouring concrete after the steel bar and a template are accepted, pouring the concrete by adopting an automobile crane matching hopper, vibrating by using an inserted vibrator at the middle part around, quickly inserting and slowly pulling out, and covering a plastic film after the concrete is constructed.
The beneficial effects of the invention are as follows:
1) The assembly steel beam assembly jig frame is convenient to assemble on site, and the main beams are arranged in the steel beam limiting grooves of the lateral limiting columns at intervals, so that the assembly efficiency and the assembly precision of the steel beams are improved.
2) The invention provides the assembled steel bar jig frame, and positions the steel bar spacing by utilizing the transverse comb plate and the longitudinal comb plate, thereby effectively reducing the binding difficulty of the prefabricated bridge deck steel bars.
3) According to the invention, a detachable bridge deck plate rapid formwork system is adopted, the periphery of the flat bottom die is provided with the transverse comb plates and the end dies, and the wedge-shaped adjusting blocks are welded above the flat bottom die, so that the prefabrication efficiency of the bridge deck plate with the variable cross section is improved.
4) The invention is provided with the prefabricated bridge deck landing auxiliary device, and is provided with the matched guide channel steel and the limit groove, so that the landing precision of the prefabricated bridge deck is improved.
5) The wet joint steel bar positioning device is arranged, and the difficulty in installing the wet joint steel bars is effectively reduced through the upper and lower slotted connecting plates with the upper layer steel bar limiting holes and the lower layer steel bar limiting holes at the upper and lower ends respectively.
6) According to the epoxy mortar paving device, the position of the displacement adjusting shaft is adjusted by the sliding block, so that the epoxy mortar is accurately paved, and the epoxy mortar paving precision and efficiency are effectively improved.
7) According to the invention, a self-made epoxy mortar scraping knife is adopted, the conveying of the epoxy mortar is regulated through a valve, and the knife blade which is flush with the lower end of the epoxy mortar conveying pipe is arranged, so that the epoxy mortar smearing speed can be greatly improved.
Drawings
FIG. 1 is a schematic diagram of a sectional steel beam assembly jig frame;
FIG. 2 is a schematic view of a girder assembly structure;
FIG. 3 is a schematic view of a steel beam assembly completion structure;
Fig. 4 is a schematic diagram of a modular rebar matrix;
FIG. 5 is a schematic view of a longitudinal comb plate structure;
FIG. 6 is a schematic diagram of a removable bridge deck rapid formwork architecture;
FIG. 7 is a schematic view of a prefabricated deck mounting structure;
FIG. 8 is a schematic view of a prefabricated deck slab placement aid;
FIG. 9 is a schematic view of a wet joint construction;
Fig. 10 is a schematic view of a wet joint rebar positioning device;
FIG. 11 is a schematic view of a wire rope construction;
FIG. 12 is a schematic anchoring of the pre-buried locating plate to the fixed connection;
FIG. 13 is a schematic view of an epoxy mortar laying device;
fig. 14 is a schematic diagram of a self-made epoxy mortar doctor blade.
In the figure: 1-assembly steel beam assembly jig frame, 2-jig frame vertical support, 3-jig frame transverse support, 4-jig frame inclined support, 5-steel beam limit groove, 6-right angle connector, 7-inclined support fixing plate, 8-bracket arm underframe, 9-fixing bolt, 10-lateral limit column, 11-shear pin, 12-vertical stiffening rib, 13-main beam, 14-cross beam, 15-assembly steel bar jig frame, 16-support upright post, 17-transverse comb plate, 18-longitudinal comb plate fixing groove, 19-transverse support, 20-steel bar limit groove, 21-jig frame bottom plate, 22-longitudinal fixing plate, 23-longitudinal comb plate, 24-clamping groove, 25-flat bottom die, 26-bottom die vertical support, 27-bottom die lateral support, 28-bottom die diagonal bracing, 29-end die, 30-wedge-shaped adjusting block, 31-vertical limiting plate, 32-limiting groove, 33-first fixed connecting plate, 34-transverse limiting plate, 35-guide channel steel, 36-prefabricated bridge deck, 37-embedded wet joint reinforcing steel bar, 38-pressing plate, 39-steel cable, 40-temporary fixed steel hook, 41-bottom layer reinforcing steel bar, 42-upper layer reinforcing steel bar, 43-plastic sleeve, 44-wet joint bottom surface template, 45-upper and lower slotted connecting plate, 46-second fixed connecting plate, 47-upper layer reinforcing steel bar limiting hole, 48-reserved hook hole, 49-bottom layer reinforcing steel bar limiting hole, 50-, embedded positioning plate, 51-embedded inserting rod, 52-displacement adjusting shaft, 53-slide rail, 54-slide block, 55-slide rail support column, 56-channel steel right-angle connector, 57-epoxy mortar, 58-slide rail fixing plate, 59-epoxy mortar storage tank, 60-blade, 61-epoxy mortar output port, 62-epoxy mortar conveying pipe, 63-valve connecting rod, 64-valve opening and closing plate, 65-valve, 66-handle and 67-support plate.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Example 1
As an example, as shown in fig. 1 to 14, the steel plate composite beam system comprises a combined steel beam assembly jig 1, a jig vertical support 2, a jig horizontal support 3, a jig diagonal support 4, a steel beam limit groove 5, a right angle connector 6, a diagonal bracing fixing plate 7, a bracket underframe 8, a fixing bolt 9, a lateral limit post 10, a shear nail 11, a vertical stiffening rib 12, a main beam 13, a cross beam 14, a combined steel bar jig 15, a support upright post 16, a horizontal comb plate 17, a longitudinal comb plate fixing groove 18, a horizontal support 19, a steel bar limit groove 20, a jig bottom plate 21, a longitudinal fixing plate 22, a longitudinal comb plate 23, a clamping groove 24, a flat bottom die 25, a bottom die vertical support 26, a bottom die lateral support 27, a bottom die diagonal bracing 28, an end die 29, a wedge adjusting block 30, a vertical limit plate 31, a limit groove 32 and a first fixing connecting plate 33, the transverse limiting plate 34, the guide channel steel 35, the prefabricated bridge deck 36, the pre-buried wet joint reinforcing steel bar 37, the pressing plate 38, the steel cable 39, the temporary fixing steel hook 40, the bottom reinforcing steel bar 41, the upper reinforcing steel bar 42, the plastic sleeve 43, the wet joint bottom template 44, the upper and lower grooving connecting plates 45, the second fixing connecting plates 46, the upper reinforcing steel bar limiting holes 47, the reserved hook holes 48, the bottom reinforcing steel bar limiting holes 49, the pre-buried locating plate 50, the pre-buried inserting rod 51, the displacement adjusting shaft 52, the sliding rail 53, the sliding block 54, the sliding rail supporting column 55, the channel steel right-angle connecting piece 56, the epoxy mortar 57, the sliding rail fixing plate 58, the epoxy mortar storage groove 59, the blade 60, the epoxy mortar output port 61, the epoxy mortar conveying pipe 62, the valve connecting rod 63, the valve opening and closing plate 64, the valve 65, the handle 66, the supporting plate 67, the main beam 13, the assembled steel beam assembled jig frame 1, the prefabricated bridge deck 36, the assembled steel bar jig frame 15, the detachable bridge deck rapid formwork system, the prefabricated bridge deck 36 accurate positioning auxiliary device, the wet joint steel bar positioning device, the epoxy mortar 57 accurate laying device and the self-made epoxy mortar scraping knife for rapid painting.
The assembly type steel beam assembly jig frame 1 comprises a vertical jig frame support 2, a transverse jig frame support 3, an inclined jig frame support 4, a steel beam limiting groove 5, a right-angle connecting piece 6, an inclined stay fixing plate 7, a bracket underframe 8, a fixing bolt 9 and a lateral limiting post 10, wherein the bracket underframe 8 is welded at the bottom of the vertical jig frame support 2, the fixing bolt 9 is arranged to be connected with the ground, the vertical jig frame support 2 and the transverse jig frame support 3 are fixed through the right-angle connecting piece 6, the fixing bolt 9 is arranged on the right-angle connecting piece 6, the inclined jig frame support 4 is further arranged between the vertical jig frame support 2 and the transverse jig frame support 3 for reinforcing connection, the inclined stay fixing plate 7 is welded at two ends of the inclined jig frame support 4 to be fixed with the vertical jig frame support 2 and the transverse jig frame support 3 respectively, the steel beam limiting groove 5 is arranged on the lateral limiting post 10 and is fixed with the transverse jig frame support 3 through the right-angle connecting piece 6.
The assembled steel bar jig 15 comprises a supporting upright post 16, a transverse comb plate 17, a longitudinal comb plate fixing groove 18, a transverse support 19, steel bar limiting grooves 20, a jig base plate 21, a longitudinal fixing plate 22, a longitudinal comb plate 23 and clamping grooves 24, wherein the jig base plate 21 is arranged symmetrically left and right and is connected through the transverse support 19 in a reinforcing mode, the transverse comb plate 17 is provided with the steel bar limiting grooves 20, the supporting upright post 16 is arranged between the jig base plate 21 and the transverse comb plate 17 and is fixed through right-angle connecting pieces 6, the right-angle connecting pieces 6 are provided with fixing bolts 9, the transverse comb plate 17 is provided with the longitudinal comb plate fixing grooves 18, the left side and the right side are symmetrically arranged and are connected in a reinforcing mode through the longitudinal fixing plates 22, the longitudinal comb plate 23 is provided with the steel bar limiting grooves 20 and the clamping grooves 24, and the longitudinal comb plate fixing grooves 18 are fixedly connected through the clamping grooves 24.
The detachable bridge deck plate rapid formwork system comprises a diagonal bracing fixing plate 7, fixing bolts 9, a transverse comb plate 17, a flat bottom die 25, a bottom die vertical support 26, a bottom die lateral support 27, a bottom die diagonal bracing 28, an end die 29 and a wedge-shaped adjusting block 30, wherein the bottom die vertical support 26 is arranged below the flat bottom die 25 and is fixed with the ground, the wedge-shaped adjusting block 30 is welded above the flat bottom die 25, the bottom fixing bolts 9 of the transverse comb plate 17 are fixedly connected with the flat bottom die 25, the bottom fixing bolts 9 of the end die 29 are fixedly connected with the flat bottom die 25, the bottom die lateral support 27 and the bottom die diagonal bracing 28 are arranged between the transverse comb plate 17 and the flat bottom die 25 for reinforcing connection, and the diagonal bracing fixing plate 7 is welded at two ends of the bottom die diagonal bracing 28 respectively and is connected with the transverse comb plate 17 and the bottom die lateral support 27 through the fixing bolts 9.
The accurate positioning auxiliary device for the prefabricated bridge deck comprises fixing bolts 9, vertical limiting plates 31, limiting grooves 32, first fixing connecting plates 33, transverse limiting plates 34 and guide channel steel 35, wherein the vertical limiting plates 31 and the transverse limiting plates 34 are formed by welding, the limiting grooves 32 are symmetrically arranged in the middle, one side of each vertical limiting plate 31 is welded with the first fixing connecting plate 33 and connected with the main beam 13 through the fixing bolts 9, the prefabricated bridge deck 36 is fixedly connected with the guide channel steel 35 through the fixing bolts 9, and accurate positioning of the prefabricated bridge deck 36 is achieved through the positioning limiting grooves 32 of the guide channel steel 35.
The wet joint steel bar setting and positioning device comprises a temporary fixing steel hook 40, an upper slotted connecting plate 45, a lower slotted connecting plate 45, an upper layer steel bar limiting hole 47, a reserved hook hole 48 and a bottom layer steel bar limiting hole 49, wherein the temporary fixing steel hook 40 is installed by the reserved hook hole 48 arranged on the upper slotted connecting plate 45 and the lower slotted connecting plate 40 and is connected with a pressing plate 38 through the temporary fixing steel hook 40, and the upper layer steel bar limiting hole 47 and the bottom layer steel bar limiting hole 49 are respectively arranged at the top and the bottom of the upper slotted connecting plate 45, so that the wet joint steel bar can be accurately positioned.
The precise epoxy mortar 57 paving device comprises a displacement adjusting shaft 52, sliding rails 53, sliding blocks 54, sliding rail supporting columns 55, channel steel right-angle connecting pieces 56, epoxy mortar 57 and sliding rail fixing plates 58, wherein the left side and the right side of each sliding rail supporting column 55 are symmetrically arranged, the lower end of each sliding rail supporting column 55 is provided with the corresponding channel steel right-angle connecting piece 56 to be connected with a cross beam 14 through a fixing bolt 9, the sliding rail fixing plates 58 are fixed with the corresponding sliding rail supporting columns 55 through bolts, sliding rails 53 are arranged on the sliding rail fixing plates, displacement adjusting shafts 52 are arranged on the sliding rails at intervals and connected with the sliding rails 53 through the sliding blocks 54, and the positions of the displacement adjusting shafts 52 are adjusted through the sliding blocks 54, so that precise epoxy mortar 57 paving is achieved.
The epoxy mortar leveling knife consists of an epoxy mortar storage tank 59, a blade 60, an epoxy mortar output port 61, an epoxy mortar conveying pipe 62, a valve connecting rod 63, a valve opening and closing plate 64, a valve 65, a handle 66 and a supporting plate 67, wherein the handle 66 is welded on the right side of the supporting plate 67, the epoxy mortar storage tank 59 is arranged above the supporting plate, the epoxy mortar 57 is stored in the epoxy mortar storage tank 59, the upper end of the epoxy mortar conveying pipe 62 is connected with the bottom of the epoxy mortar storage tank 59, the lower end of the epoxy mortar conveying pipe is flush with the blade 60, the valve opening and closing plate 64 is arranged in the epoxy mortar conveying pipe 62, the valve connecting rod 63 is connected with the valve 65, and the angle of the valve opening and closing plate 64 is adjusted by rotating the valve 65, so that the conveying of the epoxy mortar 57 is realized.
Example two
As another embodiment, the construction method of the steel plate composite beam according to the first embodiment is provided in this embodiment, and the main construction steps are as follows:
And step one, transporting the steel beams, namely transporting the steel structure single element plants to bridge site erection sites by adopting roads after the steel structure single element plants are manufactured, and splicing, lengthening, installing and erecting the steel beams on the assembled steel beam splicing jig frame 1.
The assembly type steel beam assembly jig frame is mounted, wherein the assembly type steel beam assembly jig frame 1 comprises a vertical jig frame support 2, a transverse jig frame support 3, a diagonal jig frame support 4, a steel beam limiting groove 5, a right-angle connecting piece 6, a diagonal jig fixing plate 7, a bracket underframe 8, fixing bolts 9 and lateral limiting columns 10, the bracket underframe 8 is welded at the bottom of the vertical jig frame support 2, the fixing bolts 9 are arranged to be connected with the ground, the vertical jig frame support 2 and the transverse jig frame support 3 are fixed through the right-angle connecting piece 6, the fixing bolts 9 are arranged on the right-angle connecting piece 6, the diagonal jig frame support 4 is further arranged between the vertical jig frame support 2 and the transverse jig frame support 3 to be connected in a reinforcing mode, the diagonal jig frame fixing plates 7 are welded at two ends of the diagonal jig frame support 4 to be fixed with the vertical jig frame support 2 and the transverse jig frame support 3 respectively, the lateral limiting columns 10 are provided with the steel beam limiting grooves 5 and the transverse jig frame support 3 to be fixed through the right-angle connecting piece 6. The prefabricated main beams 13 are provided with vertical stiffening ribs 12 and shear nails 11, the main beams 13 are arranged in the steel beam limiting grooves 5 of the lateral limiting columns 10 at intervals, and cross beams 14 are welded between the adjacent main beams 13.
And step two, hoisting construction of the steel plate composite beam, namely hoisting the steel plate composite beam by using an automobile crane by adopting a single longitudinal beam whole span one by one hoisting method after the steel plate composite beam is assembled on site, wherein the hoisting sequence of the steel plate composite beam Liang Zongliang is inner side beams, middle beams and outer side beams.
The third step of assembling type steel bar jig frame installation, wherein the assembling type steel bar jig frame 15 comprises a supporting upright post 16, a transverse comb plate 17, a longitudinal comb plate fixing groove 18, a transverse support 19, a steel bar limiting groove 20, a jig frame bottom plate 21, a longitudinal fixing plate 22, a longitudinal comb plate 23 and a clamping groove 24, wherein the jig frame bottom plate 21 is arranged in a bilateral symmetry mode and is connected in a reinforcing mode through the transverse support 19, the steel bar limiting groove 20 is arranged on the transverse comb plate 17, the supporting upright post 16 is arranged between the jig frame bottom plate 21 and the transverse comb plate 17 and is fixed through a right-angle connecting piece 6, the right-angle connecting piece 6 is provided with a fixing bolt 9, the transverse comb plate 17 is provided with the longitudinal comb plate fixing groove 18, the left side and the right side are symmetrically arranged and are connected in a reinforcing mode, the longitudinal comb plate 23 is provided with the steel bar limiting groove 20 and the clamping groove 24, and the longitudinal comb plate fixing groove 18 are fixedly connected through the clamping groove 24.
And (3) binding the reinforcing steel bars, namely after the assembly type reinforcing steel bar jig 15 is installed, positioning the spacing of the reinforcing steel bars by using the comb plate, and binding the reinforcing steel bars of the prefabricated bridge deck 36, wherein the binding of the reinforcing steel bars meets the construction requirements of the bridge.
And step four, manufacturing and installing a detachable bridge deck formwork system, wherein the detachable bridge deck rapid formwork system is a combined system of a flat bottom die 25, a wedge-shaped adjusting block 30, a comb plate and an end formwork 29, and the size of the prefabricated bridge deck 36 is changed only by adjusting the positions of the wedge-shaped adjusting block 30 and the end formwork 29 according to a drawing. A bottom die vertical support 26 is arranged below a flat bottom die 25 of the detachable bridge deck rapid formwork system and is fixed with the ground, a wedge-shaped adjusting block 30 is welded above the bottom vertical support, the bottom vertical support is fixedly connected with the flat bottom die 25 through a fixing bolt 9 at the bottom of a transverse comb plate 17, a fixing bolt 9 at the bottom of an end die 29 is fixedly connected with the flat bottom die 25, a bottom die lateral support 27 and a bottom die diagonal support 28 are arranged between the transverse comb plate 17 and the flat bottom die 25 and are in reinforced connection, diagonal support fixing plates 7 are respectively welded at two ends of the bottom diagonal support 28, and the bottom vertical support is connected with the transverse comb plate 17 and the bottom die lateral support 27 through the fixing bolt 9.
And (3) after the reinforcement framework is bound, adopting a special reinforcement hoisting sling to slowly hoist the reinforcement framework to the upper part of the template, aligning the gaps between the transverse reinforcement framework and the comb plate through position adjustment, slowly lowering the reinforcement framework to slowly enter the template, adjusting the spacing between partial reinforcement frameworks in time if collision positions exist between the reinforcement framework and the template in the process of entering the template, smoothly entering the template, and recovering, and installing a transverse prestress pipeline after the completion of entering the template.
And (3) pouring and curing bridge deck slab concrete, namely, in order to ensure the internal and external quality of the precast bridge deck slab 36 concrete, vibrating the lower part of the corrugated pipe by using a phi 30 vibrating rod, and vibrating the upper part of the corrugated pipe by using a phi 50 vibrating rod. The vibrator must not collide with templates, bellows and other embedded parts. The concrete curing adopts a surface film-covered water sprinkling and moisture-preserving curing mode.
Stretching and grouting, namely stretching steel bundles in a staggered way by adopting single ends, stretching the steel bundles in a staggered way, stretching the single ends, gradually loading the steel bundles in a grading way, cleaning the pore canal by using an air compressor before grouting, grouting by using intelligent grouting equipment, and continuously grouting the same pipeline at one time.
And fifthly, installing an epoxy mortar paving device when the epoxy mortar 57 is paved, wherein the epoxy mortar paving device comprises a displacement adjusting shaft 52, a sliding rail 53, a sliding block 54, a sliding rail supporting column 55, channel steel right-angle connecting pieces 56, the epoxy mortar 57 and a sliding rail fixing plate 58, wherein the left side and the right side of the sliding rail supporting column 55 are symmetrically arranged, the lower end of the sliding rail supporting column 55 is provided with the channel steel right-angle connecting pieces 56 which are connected with a cross beam 14 through fixing bolts 9, the sliding rail fixing plate 58 is fixed with the sliding rail supporting column 55 through bolts, the sliding rail 53 is arranged on the sliding rail, the displacement adjusting shaft 52 is arranged on the sliding rail at intervals, the sliding block 54 is connected with the sliding rail 53, the position of the displacement adjusting shaft 52 is adjusted through the sliding block 54, the accurate paving of the epoxy mortar 57 is realized, when the epoxy mortar 57 is paved, the self-made epoxy mortar is paved uniformly by adopting an epoxy mortar leveling knife, and the angle of a valve opening and closing plate 64 is adjusted through rotating a valve 65 arranged on the epoxy mortar leveling knife.
Step six, installing the prefabricated bridge deck slab 36, namely installing and utilizing an accurate positioning auxiliary device of the prefabricated bridge deck slab, wherein the accurate positioning auxiliary device comprises fixing bolts 9, vertical limiting plates 31, limiting grooves 32, first fixing connecting plates 33, transverse limiting plates 34 and guide channel steel 35, wherein the vertical limiting plates 31 and the transverse limiting plates 34 are formed by welding, are symmetrically arranged left and right, the limiting grooves 32 are arranged in the middle, one side of each vertical limiting plate 31 is welded with the first fixing connecting plates 33 and connected with the main beam 13 through the fixing bolts 9, the prefabricated bridge deck slab 36 is fixedly connected with the guide channel steel 35 through the fixing bolts 9, the prefabricated bridge deck slab 36 is hoisted by utilizing a crane through the positioning limiting grooves 32 of the guide channel steel 35, and accurate positioning of the prefabricated bridge deck slab 36 is achieved.
And seventh, wet joint construction, namely after the prefabricated bridge deck 36 is in place, starting wet joint construction, setting a positioning device when binding wet joint steel bars, wherein the wet joint construction comprises a temporary fixed steel hook 40, an upper and lower slotted connecting plate 45, an upper layer steel bar limiting hole 47, a reserved hook hole 48 and a bottom layer steel bar limiting hole 49, wherein the temporary fixed steel hook 40 is installed on the upper and lower slotted connecting plate 45 by setting the reserved hook hole 48, the temporary fixed steel hook 40 is connected with a pressing plate 38, and the upper layer steel bar limiting hole 47 and the bottom layer steel bar limiting hole 49 are respectively arranged at the top and bottom of the upper and lower slotted connecting plate 45, so that the accurate positioning of the wet joint steel bars is realized. The wet joint template adopts a bamboo plywood as a bottom die, is fixed by adopting a steel cable 39 and a pressing plate 38, wherein a plastic sleeve 43 is arranged on the steel cable 39, second fixing connection plates 46 are arranged at two ends of the pressing plate 38, a pre-buried positioning plate 50 is arranged on the prefabricated bridge deck 36, a pre-buried inserting rod 51 is arranged on the pre-buried positioning plate 50, and the pre-buried inserting rod is connected with the second fixing connection plates 46 through a fixing bolt 9. And (5) pouring concrete after the steel bars and the templates are accepted. The concrete is poured by adopting an automobile crane matching hopper, and the vibrator is inserted into the middle part after surrounding, so that quick and slow plugging and pulling are realized, and the phenomena of over vibration and leakage vibration are avoided. After the concrete construction is finished, the plastic film is covered, water is locked, and cracks are prevented from occurring due to early shrinkage.
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| CN117090128B (en) * | 2023-09-27 | 2025-11-18 | 中国十七冶集团有限公司 | A segmental precast assembled steel-concrete composite beam and its construction method |
| CN117620566B (en) * | 2023-12-08 | 2024-09-20 | 中铁四局集团有限公司 | A box girder reinforcement cage automatic welding frame and prefabrication method |
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| DE19600006A1 (en) * | 1996-01-02 | 1997-07-03 | Frey Kurt Dipl Ing Fh | Automatic brick laying wall-building machine |
| CN217518074U (en) * | 2022-02-11 | 2022-09-30 | 浙江翊博建筑装饰工程有限公司 | Building mortar is with paining device |
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| RU2375531C1 (en) * | 2008-07-22 | 2009-12-10 | Владимир Сергеевич Брянцев | Device for manufacturing cement and sand lining for tile laying |
| CN106835996B (en) * | 2017-03-20 | 2018-12-28 | 浙江省衢州市交通建设集团有限公司 | The reinforcing bar moulding bed and construction method of construction bridges T beam |
| CN209755640U (en) * | 2018-11-06 | 2019-12-10 | 中交第二航务工程局有限公司 | A prefabricated beam tooth plate and flange plate reinforcement positioning device |
| CN114277686B (en) * | 2021-12-21 | 2023-03-17 | 中铁二十五局集团第二工程有限公司 | Construction process of large-span steel plate combination beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19600006A1 (en) * | 1996-01-02 | 1997-07-03 | Frey Kurt Dipl Ing Fh | Automatic brick laying wall-building machine |
| CN217518074U (en) * | 2022-02-11 | 2022-09-30 | 浙江翊博建筑装饰工程有限公司 | Building mortar is with paining device |
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Address after: 230031 no.445 Huangshan Road, Shushan District, Hefei City, Anhui Province Patentee after: Anhui Construction Engineering Highway and Bridge Construction Group Co.,Ltd. Country or region after: China Address before: 230071 Anhui Province, Hefei City, Shushan District, Huangshan Road No. 445 Patentee before: ANHUI ROAD & BRIDGE ENGINEERING Co.,Ltd. Country or region before: China |