CN112195767A - Bridge pre-buried protective expansion joint structure and construction method - Google Patents
Bridge pre-buried protective expansion joint structure and construction method Download PDFInfo
- Publication number
- CN112195767A CN112195767A CN201910611980.1A CN201910611980A CN112195767A CN 112195767 A CN112195767 A CN 112195767A CN 201910611980 A CN201910611980 A CN 201910611980A CN 112195767 A CN112195767 A CN 112195767A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000001681 protective effect Effects 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000004873 anchoring Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000005098 hot rolling Methods 0.000 claims description 26
- 210000003205 muscle Anatomy 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000011835 investigation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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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
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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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/086—Drainage arrangements or devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bridge pre-buried protective expansion joint structure and a construction method, relating to the technical field of bridge structures, wherein the structure comprises a hot-rolled steel seat as an expansion joint beam body combined assembly structure and a bridge deck as a bridge deck mounting gap filling structure, the bridge deck is fixedly arranged at the top end of the hot-rolled steel seat, a side beam is welded at each of four corners of the hot-rolled steel seat, a connecting column is arranged in the middle of each side beam in a penetrating manner, the hot-rolled steel seat is used as an expansion joint device main body structure, an anchoring rib and a bearing seat which are fixed at the inner side of the hot-rolled steel seat are used as transverse and longitudinal loading ends of the expansion joint structure, the structure ensures the fastening connection with the bridge section through the arrangement of a cross beam and pre-buried reinforcing steel bars, and simultaneously, the bridge deck and a water falling plate are arranged on the premise of convenient installation, the problems that, the suitability is lower, is unfavorable for the problem that the expansion joint maintained simultaneously in the application stage.
Description
Technical Field
The invention relates to the technical field of bridge structures, in particular to a bridge pre-embedded protective expansion joint structure and a construction method.
Background
The expansion joints of the bridge are designed to meet the requirement of bridge deck deformation, and are usually arranged between two beam ends, between the beam ends and a bridge abutment or at the hinged position of the bridge, and are required to be freely telescopic, firm and reliable in two directions parallel to and perpendicular to the axis of the bridge;
the existing bridge expansion device is limited by the bridge section environment and the concrete load degree in the types selection and construction assembly, the stability of the existing bridge expansion device needs to depend on the correspondingly arranged anchoring mechanism and the like, so that the expansion joint structure is locally broken and damaged due to the change of the load when the existing bridge expansion device is applied, the effective service life is difficult to guarantee, the maintenance cost is increased, and meanwhile, the garbage sundries are easily accumulated in the gap position of the open expansion joint in the types selection, and the damage of the structure is easily aggravated due to the erosion of the bearing structure by rainwater.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the problems and provides a bridge pre-buried protective expansion joint structure and a construction method, wherein a hot-rolled steel seat is used as a main body structure of an expansion joint device, an anchoring rib and a pressure bearing seat which are fixed on the inner side of the expansion joint structure are used as transverse and longitudinal load ends of the expansion joint structure, the structure ensures the fastening connection with the cross section of a bridge through the arrangement of a cross beam and a pre-buried reinforcing bar, and meanwhile, the problems that the main body of the existing expansion joint structure is poor in strength, large in dependence on an anchoring mechanism assembled during installation, low in applicability and not beneficial to expansion joint maintenance in an application stage are solved on the premise of convenience in installation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a pre-buried protection expansion joint structure of bridge, the structure includes the hot rolling steel seat as expansion joint roof beam body combination assembly structure and fills the decking of structure as bridge floor installation gap, the decking is fixed to be set up in hot rolling steel seat top, each welding of hot rolling steel seat four corners has a boundary beam, the boundary beam middle part all runs through and is provided with the spliced pole, peg graft in the decking lower surface on the spliced pole, the sleeve wheel has been cup jointed with the decking junction to the spliced pole, a steel seat inside casing has all been rabbeted at both ends around the hot rolling steel seat inboard, the steel seat inside casing runs through with hot rolling steel seat junction and is provided with the bolt.
Furthermore, the structure still includes the board of falling water that sets up between hot rolling steel seat and decking, the board of falling water four corners respectively with every sleeve wheel fixed connection, the board middle part of falling water runs through and is provided with the adhesive tape, the adhesive tape is rabbeted with decking bottom surface.
Further, the decking includes stripe way and L type connecting piece, the stripe way transversely is rabbeted in the decking middle part, L type connecting piece is provided with two pairs altogether, L type connecting piece is bilateral symmetry and is fixed in the decking two sides of the face back of the body, decking upper surface evenly distributed has the groove of falling into water, the groove notch of falling into water runs through both ends about the decking, the fluting of the decking left and right sides is formed with the step face.
Further, hot rolling steel seat includes lug, channel-section steel frame and anchor muscle, the lug protrusion sets up in hot rolling steel seat upper surface middle part, the channel-section steel frame is provided with two altogether, the channel-section steel frame is the symmetric welding in hot rolling steel seat bottom left and right sides, the anchor muscle is provided with six pairs altogether, the anchor muscle is longitudinal arrangement in hot rolling steel seat inboard, the anchor muscle is the U type, anchor muscle one end is run through in the channel-section steel frame, and other end downwardly extending is to between the channel-section steel frame.
Further, the hot-rolled steel seat is characterized by further comprising a bearing seat, the bearing seat is longitudinally embedded in the middle of the inner side of the hot-rolled steel seat, the rubber seats are sleeved at the left end and the right end of the bearing seat, and the inner walls of the left end and the right end of the rubber seats are fixedly connected with the inner walls of the hot-rolled steel seat.
Furthermore, six pairs of embedded steel bars are distributed between the anchoring bars, two cross beams transversely penetrate between the anchoring bars and the embedded steel bars, and the head end and the tail end of each cross beam penetrate through the front end and the rear end of the hot-rolled steel seat.
The invention further provides a construction method based on the bridge pre-buried protection expansion joint structure, which comprises the following steps:
a pre-construction stage: a construction engineer determines the cross section area of the bridge section through field investigation, determines the length of the hot rolled steel seat structure according to the cross section area, manufactures an expansion joint structure with a corresponding size, then pre-embeds embedded steel bars on the bridge section in a transverse equal-interval arrangement mode, determines the installation position of the expansion joint by pouring concrete, and simultaneously cleans and cleans the bridge section by using tools to ensure the flatness of the bridge section structure;
and (3) an installation stage: a construction unit hoists the expansion joint structure in place through an engineering hoisting machine, after an engineer confirms the sizes of the expansion joint and the section of the bridge, the construction unit is matched with the constructor to embed and fill the hot-rolled steel seat in the section of the bridge, and sequentially performs alignment confirmation on structures such as an L-shaped connecting piece, a steel seat inner frame, a bearing seat and the like in the hot-rolled steel seat, and then performs concrete pouring in an expansion joint installation groove again to fill a groove gap structure between an anchoring rib and a channel steel frame, fix one end of the anchoring rib, the channel steel frame and the concrete structure of the section of the bridge, then penetrate a cross beam between the anchoring rib and the embedded steel bar to further reinforce the expansion joint structure and the bridge structure, then confirm a gap between the structure and the bridge, and finally perform cleaning to finish the installation work of the section of the;
and (3) waterproof treatment: after the constructor confirms that the expansion joint structure is installed, the bridge deck is flatly paved at the height step surface between the bridge face and the expansion joint structure to fill up the step surface, the water falling plate and the sleeve wheel are fixedly inserted and embedded at the step surface of the bridge face before installation, the left end and the right end of the water falling plate are communicated with the cross section openings at the left side and the right side of the bridge, and then the expansion joint structure and the bridge deck are connected by the connecting column to embed and fix the bridge deck at the upper end of the expansion joint structure to complete installation.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: compared with the existing expansion joint device and structure, the bridge pre-buried protective expansion joint structure and the construction method adopt the hot-rolled steel section steel seat as a structure bearing main body, further reinforce the load capacity of the structure through the bearing seat arranged on the inner side, avoid the deficiency of the load strength of the existing simple expansion joint, simultaneously use the symmetrically arranged left and right anchoring ribs as the stretching ends of the bridge section, further ensure the strength of the structure, and the structure assists the waterproof treatment work of the expansion joint through the arranged combined bridge deck on the basis of an embedding and filling installation mode, so that the long-term effective application and maintenance of the structure are facilitated, and the investment cost is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the bridge deck structure of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a side view assembly of the present invention.
In the attached drawing, 1-hot rolled steel seat, 2-bridge deck, 3-boundary beam, 4-connecting column, 5-lug, 6-angle steel piece, 7-channel steel frame, 8-anchoring rib, 9-stripe channel, 10-L type connecting piece, 11-water falling groove, 12-steel seat inner frame, 13-bolt, 14-sleeve wheel, 15-water falling plate, 16-adhesive tape, 17-embedded steel bar, 18-beam, 19-bearing seat and 20-rubber seat.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
As shown in fig. 1 to 4, the bridge pre-buried protection expansion joint structure comprises a hot-rolled steel seat 1 as an expansion joint beam body combination assembly structure and a bridge deck 2 as a bridge deck installation gap filling structure, wherein the bridge deck 2 is fixedly arranged at the top end of the hot-rolled steel seat 1, a boundary beam 3 is welded on each of four corners of the hot-rolled steel seat 1, a connecting column 4 is arranged in the middle of the boundary beam 3 in a penetrating manner, the upper end of the connecting column 4 is inserted into the lower surface of the bridge deck 2, a sleeve wheel 14 is sleeved at the joint of the connecting column 4 and the bridge deck 2, a steel seat inner frame 12 is embedded at the front end and the rear end of the inner side of the hot-rolled steel seat, a bolt 13 is arranged at the joint of the steel seat inner frame 12 and the hot-rolled steel seat 1 in a penetrating manner, wherein the hot-rolled steel seat 1 comprises a lug 5, a channel steel frame 7 and an anchoring rib 8, the lug 5 is convexly arranged in, six pairs of anchoring ribs 8 are arranged, the anchoring ribs 8 are longitudinally arranged on the inner side of a hot-rolled steel seat 1, the anchoring ribs 8 are U-shaped, one end of each anchoring rib 8 penetrates through a channel steel frame 7, the other end of each anchoring rib extends downwards to a position between channel steel frames 7, the hot-rolled steel seat 1 further comprises a bearing seat 19, the bearing seat 19 is longitudinally embedded and arranged in the middle of the inner side of the hot-rolled steel seat 1, in order to ensure that an expansion joint structure is embedded and filled in a bridge section and can be fully contacted and fixed with the bridge section structure, the arranged anchoring ribs 8 and the channel steel frame 7 structure are directly contacted with the bottom edge of the bridge section when being installed and are fixed with the bridge sections at two ends in a concrete pouring mode so as to connect the expansion joint structure and the two ends of the bridge section into a whole, further, a bridge deck 2 comprises a stripe channel 9 and an L-shaped connecting piece 10, the stripe channel 9 is transversely, the L-shaped connecting piece 10 is fixed on the front and back surfaces of the bridge deck 2 in a bilateral symmetry manner, the upper surface of the bridge deck 2 is uniformly distributed with water falling grooves 11, the notches of the water falling grooves 11 penetrate through the upper end and the lower end of the bridge deck 2, the left side and the right side of the bridge deck 2 are provided with grooves to form step surfaces, the bridge deck 2 is used as a bridge section packaging structure and is directly matched with the upper surface of a bridge as a plane structure, the arranged step surfaces are used for being clamped with the bridge section, meanwhile, the arrangement of the water falling grooves 11 is used as a drainage channel facility at the position of a bridge expansion joint to meet the normal guiding of rainwater, the structure also comprises a water falling plate 15 arranged between a hot rolling steel seat 1 and the bridge deck 2, four corners of the water falling plate 15 are respectively and fixedly connected with each sleeve wheel 14, the middle part of the water falling plate 15 is provided with a rubber strip 16 in a penetrating manner, the rubber strip, wherein both ends face is domatic about the board 15 falls into water to converge the rainwater to the board 15 middle part that falls into water, and follow the groove footpath flow direction that the board 15 formed that falls into water and control both ends opening, thereby draw the bridge section with the rainwater, avoid piling up of bridge section rainwater, and corrode expansion joint structure metal material, influence structural stability.
In this embodiment, the rubber seats 20 are sleeved at the left end and the right end of the bearing seat 19, the inner walls of the left end and the right end of the hot rolled steel seat 1 are fixedly connected with the rubber seats 20, wherein the rubber seats 20 are made of neoprene to serve as the left connecting end and the right connecting end of the inner wall of the hot rolled steel seat 1, and in the application process of the hot rolled steel seat 1, a part of the two ends, which are subjected to tensile force, is offset by the rubber seats 20 to buffer the stress process of the anchoring ribs 8, so that the stability of the structure is ensured.
In this embodiment, it has six pairs of embedded bar 17 to distribute between the anchor muscle 8, and anchor muscle 8 and embedded bar 17 transversely run through between have two crossbeams 18, and 18 head and the tail both ends of crossbeam run through both ends around hot rolling steel seat 1, through embedded bar 17 and 18 setting of crossbeam, utilize embedded bar 17 to extend bridge section structure, utilize crossbeam 18 to further connect anchor muscle 8 and embedded bar 17, further make up expansion joint structure and bridge section both ends, consolidate expansion joint major structure.
As shown in fig. 1 to 4, the invention further includes a construction method of the bridge pre-buried protection expansion joint, which includes the following steps:
a pre-construction stage: a construction engineer determines the cross section area of the bridge section through field investigation, determines the length of the hot-rolled steel seat 1 structure, manufactures an expansion joint structure with a corresponding size, then pre-embeds the pre-embedded steel bars 17 on the bridge section in a transverse equal-interval arrangement mode, determines the installation position of the expansion joint through pouring concrete, and simultaneously cleans and cleans the bridge section by using tools to ensure the flatness of the bridge section structure;
and (3) an installation stage: a construction unit hoists the expansion joint structure in place through an engineering hoisting machine, after an engineer confirms the sizes of the expansion joint and the section of the bridge, the engineering worker is matched with the constructor to embed and fill the hot-rolled steel seat 1 in the section of the bridge, the structures such as the L-shaped connecting piece 10, the steel seat inner frame 12 and the bearing seat 19 in the hot-rolled steel seat 1 are sequentially aligned and confirmed, then concrete is poured in the expansion joint installation groove again to fill a groove gap structure between the anchoring rib 8 and the channel steel frame 7, one end of the anchoring rib 8, the channel steel frame 7 and the section of the bridge concrete structure are fixed with the expansion joint, then the cross beam 18 penetrates between the anchoring rib 8 and the embedded steel bar 17 to further reinforce the bridge structure, then a gap between the expansion joint structure and the bridge is confirmed, and finally the gap filling is cleaned, and the installation work of the section of the;
and (3) waterproof treatment: after the constructor confirms that the expansion joint structure is installed, the bridge deck 2 is flatly paved at the height step surface between the bridge surface and the expansion joint structure to fill up the step surface, the water falling plate 15 and the sleeve wheel 14 are fixedly inserted and embedded at the step surface of the bridge surface before installation, wherein the left end and the right end of the water falling plate 15 are communicated with the cross section openings at the left side and the right side of the bridge, and then the connection column 4 is used for connecting the expansion joint structure and the bridge deck 2 to embed and fix the bridge deck 2 at the upper end of the expansion joint structure, so that the installation is completed.
Here, the upper, lower, left, right, front, and rear represent only relative positions thereof and do not represent absolute positions thereof. The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a pre-buried protection expansion joint structure of bridge, its includes hot rolling steel seat (1) as expansion joint roof beam body combination assembly structure and bridge deck slab (2) as bridge floor installation gap filling structure, bridge deck slab (2) are fixed to be set up in hot rolling steel seat (1) top, its characterized in that: the hot rolling steel seat is characterized in that a boundary beam (3) is welded at each of four corners of the hot rolling steel seat (1), a connecting column (4) is arranged in the middle of the boundary beam (3) in a penetrating mode, the upper end of the connecting column (4) is inserted into the lower surface of the bridge deck (2), a sleeve wheel (14) is sleeved at the joint of the connecting column (4) and the bridge deck (2), a steel seat inner frame (12) is embedded at the front end and the rear end of the inner side of the hot rolling steel seat (1), and a bolt (13) is arranged at the joint of the steel seat inner frame (12) and the hot rolling steel seat (.
2. The pre-buried protection expansion joint structure of bridge according to claim 1, characterized in that: the pre-buried protection expansion joint structure of bridge is still including setting up the board of falling water (15) between hot rolling steel seat (1) and decking (2), board of falling water (15) four corners respectively with every sleeve wheel (14) fixed connection, board of falling water (15) middle part is run through and is provided with adhesive tape (16), adhesive tape (16) and decking (2) bottom surface scarf joint.
3. The pre-buried protection expansion joint structure of bridge according to claim 1, characterized in that: bridge plate (2) are including stripe way (9) and L type connecting piece (10), stripe way (9) transversely are rabbeted in bridge plate (2) middle part, L type connecting piece (10) are provided with two pairs altogether, L type connecting piece (10) are bilateral symmetry and are fixed in bridge plate (2) two sides of the face back, bridge plate (2) upper surface evenly distributed has groove (11) of falling into water, groove (11) notch of falling into water runs through both ends about bridge plate (2), the fluting of bridge plate (2) left and right sides is formed with the step.
4. The pre-buried protection expansion joint structure of bridge according to claim 1, characterized in that: hot rolling steel seat (1) includes lug (5), channel steel frame (7) and anchor muscle (8), lug (5) protrusion sets up in hot rolling steel seat (1) upper surface middle part, channel steel frame (7) are provided with two altogether, channel steel frame (7) are the symmetric welding in hot rolling steel seat (1) bottom left and right sides, anchor muscle (8) are provided with six pairs altogether, anchor muscle (8) are longitudinal arrangement in hot rolling steel seat (1) inboard, anchor muscle (8) are the U type, anchor muscle (8) one end runs through in channel steel frame (7), and the other end downwardly extending is to between channel steel frame (7).
5. The pre-buried protection expansion joint structure of bridge according to claim 4, characterized in that: hot rolling steel seat (1) is still including pressure-bearing seat (19), pressure-bearing seat (19) are vertical embedding and set up in the inboard middle part of hot rolling steel seat (1), both ends have cup jointed rubber seat (20) about pressure-bearing seat (19), both ends inner wall fixed connection is controlled with hot rolling steel seat (1) in rubber seat (20).
6. The pre-buried protection expansion joint structure of bridge according to claim 5, characterized in that: six pairs of embedded steel bars (17) are distributed between the anchoring bars (8), two cross beams (18) transversely penetrate between the anchoring bars (8) and the embedded steel bars (17), and the head end and the tail end of each cross beam (18) penetrate through the front end and the rear end of the hot-rolled steel seat (1).
7. A construction method for a bridge pre-buried protection expansion joint is characterized by comprising the following steps:
a pre-construction stage: a construction engineer determines the cross section area of the bridge section through field investigation, determines the length of the hot-rolled steel seat (1) structure according to the cross section area, manufactures an expansion joint structure with a corresponding size, then pre-embeds pre-embedded steel bars (17) on the bridge section in a transverse equal-interval arrangement mode, determines the installation position of the expansion joint through pouring concrete, and simultaneously, a constructor cleans and cleans the bridge section by using tools to ensure the flatness of the bridge section structure;
and (3) an installation stage: the construction unit hoists the expansion joint structure in place through engineering hoisting machinery, after an engineer confirms the sizes of the expansion joint and the section of the bridge, the construction unit is matched with the constructor to embed the hot-rolled steel seat (1) in the section of the bridge, and sequentially carries out alignment confirmation on structures such as an L-shaped connecting piece (10), a steel seat inner frame (12) and a bearing seat (19) in the hot-rolled steel seat (1), then carries out concrete pouring in the expansion joint installation groove again to fill a slot structure between an anchoring rib (8) and a slot steel frame (7), fixes one end of the anchoring rib (8), the slot steel frame (7) and the concrete structure of the section of the bridge, then penetrates a cross beam (18) between the anchoring rib (8) and an embedded steel bar (17) to further reinforce the expansion joint structure and the bridge structure, confirms the gap between the expansion joint structure and the bridge, and finally carries out cleaning and filling, completing the installation work of the bridge section;
and (3) waterproof treatment: after a constructor confirms that the installation of the expansion joint structure is completed, the bridge deck (2) is flatly laid at the height step surface between the bridge deck and the expansion joint structure to fill up the step surface, before the installation, the water falling plate (15) and the sleeve wheel (14) are fixedly inserted and embedded at the step surface of the bridge deck, wherein the left end and the right end of the water falling plate (15) are communicated with openings of the cross sections of the left side and the right side of the bridge, and then the expansion joint structure and the bridge deck (2) are connected by using the connecting column (4) to fill and fix the bridge deck (2) at the upper end of the expansion joint structure, so that the installation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611980.1A CN112195767A (en) | 2019-07-08 | 2019-07-08 | Bridge pre-buried protective expansion joint structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611980.1A CN112195767A (en) | 2019-07-08 | 2019-07-08 | Bridge pre-buried protective expansion joint structure and construction method |
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| CN112195767A true CN112195767A (en) | 2021-01-08 |
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| CN201910611980.1A Pending CN112195767A (en) | 2019-07-08 | 2019-07-08 | Bridge pre-buried protective expansion joint structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026545A (en) * | 2021-03-19 | 2021-06-25 | 杨艳 | Road engineering seamless bridge deck expansion joint structure and construction method thereof |
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2019
- 2019-07-08 CN CN201910611980.1A patent/CN112195767A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026545A (en) * | 2021-03-19 | 2021-06-25 | 杨艳 | Road engineering seamless bridge deck expansion joint structure and construction method thereof |
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Application publication date: 20210108 |