CN202865737U - Replaceable retractor device for roadway bridge - Google Patents

Replaceable retractor device for roadway bridge Download PDF

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Publication number
CN202865737U
CN202865737U CN 201220443049 CN201220443049U CN202865737U CN 202865737 U CN202865737 U CN 202865737U CN 201220443049 CN201220443049 CN 201220443049 CN 201220443049 U CN201220443049 U CN 201220443049U CN 202865737 U CN202865737 U CN 202865737U
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CN
China
Prior art keywords
stretching device
water blocking
blocking tape
anchor
connection strap
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Expired - Lifetime
Application number
CN 201220443049
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Chinese (zh)
Inventor
康俊
魏新胜
魏广峰
陈克坚
秦小林
魏永幸
陈列
袁明
游励辉
殷继兴
刘名君
黄波
葛根荣
陈思孝
鄢勇
唐向东
戴胜勇
李锐
刘庆
肖亚辉
熊祥雪
贺勇
曾玲
谭璐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Tongchuang Transportation Technology Co ltd
Wei Xinsheng
China Railway Eryuan Engineering Group Co Ltd CREEC
Railway Engineering Research Institute of CARS
China Railway Design Corp
China Railway Economic and Planning Research Institute
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China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN 201220443049 priority Critical patent/CN202865737U/en
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Publication of CN202865737U publication Critical patent/CN202865737U/en
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Abstract

The utility model discloses a replaceable retractor device for a roadway bridge. Under the condition of keeping an upper rail structure in normal utilization, a waterproof belt can be conveniently replaced under rail substrates or a railway bed. The replaceable retractor device comprises a pair of connecting strips (20) fixed on two side walls of an expansion joint (60) through anchoring components (40), and the waterproof belt (10) connected with the connecting strips (20) on two side portions. The connecting strips (20) are provided with anchoring grooves (21) extending along the overall length direction. Downward protruding anchoring locating bosses (11) are arranged on the two side portions of the waterproof belt (10). Sections of the anchoring locating bosses (11) correspond to sections of grooves (21a) on lower portions of the anchoring grooves (21) in shape. The two side portions of the waterproof belt (10) are dragged in the anchoring grooves (21) from longitudinal ends of the connecting strips (20). Locking strips (30) are pressed in spaces between the upper surface of the waterproof belt (10) and tops of the anchoring grooves (21), and therefore the waterproof belt (10) is enabled to form anchoring connection with the connecting strips (20).

Description

The replaceable stretching device of railroad bridge
Technical field
The utility model relates to railroad bridge, particularly a kind of replaceable stretching device for shrinkage joint between railroad bridge beam body.
Background technology
Railway is the main artery of national economy, and society is served in railway transportation all the time, serves the common people.Along with the fast development of national economy, country gives railway transportation with the standard of heavy task and Geng Gao more.Up to the present, the existing length of railroad lines in service of China reaches 9.1 ten thousand kilometers, about more than 50,000 more than 4000 kilometers on bridge.In newly-built railway, the ratio of bridge overall length the line is busy road overall length is more and more higher.The line is busy that the road always is about 88% such as Beijing-Tianjin inter-city railway bridge overall length, and the line is busy that the road always is about 81% for Beijing-Shanghai High-Speed Railway bridge overall length.Except a small amount of employing is striden greatly the special construction, all the other the whole hole of prestressed concrete two-wire freely supported structures that adopt more, Common Span is 32m, 24m, wherein the Common Span structure accounts for again more than 90% of bridge overall length.
Bridge is the distortion such as the beam body is stressed, temperature in order to adapt to, and must keep somewhere flexible slit between the beam body.But the indwelling in flexible slit becomes the most important approach of the stained beam body of Deck Water Leakage burn into, bearing, inspection facility and pier etc.China railways bridge operation experience for many years shows, it is most of relevant with water damage that the various factors that affect the structure durability disease appear in bridge, such as alkali-aggregate reaction, carbonation of concrete, the corrosion of reinforcing bar electrochemistry, acid rain destruction, freeze thawing circulation etc., bridge floor ponding beam end drops simultaneously, directly becomes the prestress anchorage system of corrosion in water beam end of body, the chief culprit of worsening maintenance maintenance condition.Stretching device is as the important ancillary facility of railroad bridge, and its major function is that the ponding that prevents rainwater or other bridge floor flows directly into the beam end of body, and the performances such as the catchmenting of bridge end, draining, waterproof are played an important role.The suitable bridge that also must satisfy simultaneously two curb girder body necessity is to the needs of, direction across bridge displacement, vertical displacement and rotation, and its quality and performance will directly affect the durability of bed rearrangement bridge.
At present, the stretching device that uses both at home and abroad mainly is divided into Ballast track bridge extension joint and ballastless track bridge stretching device, and the ballastless track bridge expansion gap device is made of one-time formed extraordinary profile shapes metal connection strap, water blocking tape and anchor device three parts; The Ballast track bridge extension joint also comprises gear tiny fragments of stone, coal, etc. cover plate totally four parts composition except above-mentioned three parts.The construction of stretching device connects disposable being in place dual mode and carries out with the on-the-spot profile shapes metal of installing after the beam-ends that is connected is reserved notch when generally adopting the beam body concrete to build.The form of structure of foreign railway bridge extension joint is mainly take " V " type, " U " water blocking tape as main, disposable being in place, and difference only is the machine made difference of water blocking tape.After the ballast bed structure layer is installed, if do not removing under the ballast bed structure operating mode, stretching device integral body or parts all can not be overhauled and change.
To sum up, existing railroad bridge stretching device, all comprise by anchorage element and be fixed in a pair of profile shapes metal connection strap on the two side, shrinkage joint, and dual-side section forms the water blocking tape that is connected with connection strap, profile shapes metal connection strap has the anchor slot that the total length direction is extended, the water blocking tape dual-side has the anchored end that its section configuration and anchor slot section configuration match, and relies on the elastic deformation of anchored end to make its surface and anchor slot inwall close contact form sealing, reaches the purpose of waterproof.Simultaneously, anchor slot constraint water blocking tape anchored end, the water blocking tape dual-side can not be deviate from from the openend of anchor slot.The anchored end of water blocking tape dual-side need be clamp-oned profile shapes metal connection strap anchor slot during installation, installs very difficultly, waste time and energy, and installation quality is difficult to obtain assurance.Behind the installation in position, water blocking tape can't be removed from profile shapes metal connection strap simultaneously, and water blocking tape breakage or application life can't be changed to after date.
Also just begin, its technology is still not mature enough.Mainly use supporting stretching device and other similar products of " railway Common Span beam bridge floor ancillary facility " [logical bridge 20088388] building each bar Line for Passenger Transportation simple supported box beam stretching device now, there is following problems in these products according to investigations: working properly when the beam seam dwindles, beam seam then is very easy to try to shirk responsibility leak when increasing, when particularly temperature is low more very; Waterproofing system is because chucking power is less, and installation is difficult for, and water blocking tape comes off seriously, and waterproof effect is poor; Simultaneously, after the water blocking tape of all modes comes off, be difficult to again recover to put in place; More difficult replacing or need turn over clearly railway roadbed when changing when damaged, very large on the impact of railways train operation, there is wretched insufficiency.
Problem for present stretching device exists for further guaranteeing the durability of bridge, reduces the operation maintenance costs, improve the maintenance condition, in the urgent need to studying a kind of new railroad bridge stretching device, satisfy good water-proof effect, easily requirement is changed in installation, maintenance.2005 and 2007 Ministry of Railways have promulgated that respectively " 200～250 kilometers Railway Design temporary provisions of newly-built speed per hour " and " newly-built speed per hour 300-350 kilometer Railway Design temporary provisions " have clearly proposed the durability target that newly-built Passenger dedicated railway Bridge structure should reach 100 year application life.According to above-mentioned requirements, the design normal service life of general railroad bridge stretching device water blocking tape is about 20 years, and be 100 years the projected life of bridge, the situation that exists serious durability disunity to coordinate, flexible water blocking tape needs repeatedly to change within this 100 year operating period, and change each time required direct cost for initial install do not comprise the loss that railway operation is caused because changing water blocking tape more than 5 times.Especially for continuous track substrate bridge deck structure, difficult especially to the maintain and replace of water blocking tape.So, in order to reach fast, be convenient for changing the purpose of water blocking tape, need below track substrate or railway roadbed, to change the stretching device of water blocking tape in a kind of situation keeping the upper track structure normally to use of research.
The utility model content
Technical problem to be solved in the utility model provides the replaceable stretching device of a kind of railroad bridge, is keeping can changing easily water blocking tape in the normal situation about using of upper track structure below track substrate or railway roadbed.
The technical scheme that its technical problem that solves the utility model adopts is as follows:
The replaceable stretching device of railroad bridge of the present utility model, comprise by anchorage element and be fixed in a pair of connection strap on the two side, shrinkage joint, and dual-side section forms the water blocking tape that is connected with connection strap, connection strap has the anchor slot that the total length direction is extended, it is characterized in that: the dual-side section of described water blocking tape has lower protruding anchor and position boss, and the section configuration of the section configuration of this anchor and position boss and the lower recess of anchor slot matches; Water blocking tape dual-side section draws in the anchor slot from the vertical end of connection strap, is pressed into locking strip in the space between water blocking tape upper surface and anchor slot top, makes water blocking tape and connection strap form anchor connection.
The openend height of described connection strap anchor slot in the installation process, has slip-off preventing auto-lock function to water blocking tape less than the width of water blocking tape anchor and position boss.
The beneficial effects of the utility model are, have effectively solved the drawback of existing bridge extension joint, can satisfy the bridge direction across bridge, along the function of bridge to displacement and waterproof; It is convenient that water blocking tape is installed, changed, and water blocking tape can change more in the situation that does not affect the normal operation of train, changes and need not open " skylight "; The chucking power of connection strap and water blocking tape is large, and water resistance is good, and possesses larger chucking power deposit; The device whole height is low, the beam-ends preformed groove is shallow, does not destroy the waterproofing course of bridge floor, thus not need to prefabrication of beam or when cast-in-place separately for the processing of stretching device set aside pre-embedded groove is installed, can reduce the cost of beam body, make things convenient for the beam body construction; Antiseptic property is good, and the barrier propterty of stretching device is guaranteed; Integral rigidity is good, the rubber-tyred engineering truck can safety pass through, bring great convenience to engineering construction; The requirement that stretching device can satisfy different strokes can adapt to the different spans beam very easily to the requirement of stretching device stroke.
Description of drawings
This manual comprises following eight width of cloth accompanying drawings:
Fig. 1 is the profile of the replaceable stretching device embodiment 1 of the utility model railroad bridge;
Fig. 2 is the profile of connection strap in the replaceable stretching device of the utility model railroad bridge;
Fig. 3 is the profile of support type elastic locking bar in the replaceable stretching device of the utility model railroad bridge;
Fig. 4 is the profile of water blocking tape in the replaceable stretching device of the utility model railroad bridge;
Fig. 5 is the profile of the replaceable stretching device embodiment 2 of the utility model railroad bridge;
Fig. 6 is the local amplification profile diagram of the replaceable stretching device embodiment 2 of the utility model railroad bridge;
Fig. 7 is the profile of the replaceable stretching device embodiment 3 of the utility model railroad bridge;
Fig. 8 is the profile of the replaceable stretching device embodiment 4 of the utility model railroad bridge;
Parts shown in the figure, position and corresponding mark: water blocking tape 10, anchor and position boss 11, width L11, locking convex shoulder 12; Connection strap 20, anchor slot 21, openend height h21, lower recess 21a, dovetail groove 22, inner nut 22a; Locking strip 30, inboard support arm 30a, inboard support arm 30b; Anchorage element 40, anchor bar 41, outer nut 41a, beam body built-in fitting 42; Gear tiny fragments of stone, coal, etc. cover plate 51, junction steel plate 52, rectangle positioning steel tube 53; Shrinkage joint 60, beam body 61, dash platform 62, concave station 62a.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, the replaceable stretching device of railroad bridge of the present utility model, comprise by anchorage element 40 and be fixed in a pair of connection strap 20 on 60 two sides, shrinkage joint, and dual-side section forms the water blocking tape 10 that is connected with connection strap 20, connection strap 20 has the anchor slot 21 of total length direction extension.With reference to Fig. 1, Fig. 2 and Fig. 4, the dual-side section of described water blocking tape 10 has lower protruding anchor and position boss 11, and the section configuration of the lower recess 21a of the section configuration of this anchor and position boss 11 and anchor slot 21 matches.Water blocking tape 10 dual-side sections draw in the anchor slot 21 from connection strap 20 vertical ends, are pressed into locking strip 30 in the space between water blocking tape 10 upper surfaces and anchor slot 21 tops, make water blocking tape 10 and connection strap 20 form anchor connection.Under the effect of locking strip 30, the formation sealing is close on anchor and position boss 11 pressurizeds of the dual-side section of water blocking tape 10 and anchor slot 21 lower recess 21a surfaces, reaches the purpose of waterproof.With reference to Fig. 4, behind water blocking tape 10 installation in position, its middle part naturally droops and forms U-shaped section.
The replaceable stretching device of the utility model bridge is compared with existing bridge extension joint, maximum improvement is the anchorage style that has changed water blocking tape, namely clamp-on the anchor slot inwall by single dependence water blocking tape both sides anchored end and form anchoring, be improved to the cooperation by water blocking tape 10 dual-side bottom anchor positioning boss 11,30 two members of locking strip, form with the anchor slot inwall fit tightly to realize anchoring.
The change of anchorage style has brought the change of mounting means.
Existing bridge extension joint adopts one-step method to install, the anchored end of water blocking tape dual-side need be clamp-oned profile shapes metal connection strap anchor slot during installation, install very difficult, can't remove from profile shapes metal connection strap behind the water blocking tape installation in position, water blocking tape breakage or application life can't be changed to after date.
The replaceable stretching device of the utility model bridge adopts two-step method to install, at first water blocking tape 10 dual-side sections are drawn in the anchor slot 21 from connection strap 20 vertical ends, owing to draw in the process not pressurized of water blocking tape 10 dual-side sections, therefore resistance only is the very little frictional force between the contact surface, is easy to water blocking tape 10 drawn in put in place.In the space between water blocking tape 10 upper surfaces and anchor slot 21 tops, be pressed into locking strip 30 again, adopt special-purpose compactor can finish easily this process.Importantly, the utility model has been realized water blocking tape breakage or application life arriving the replaceable of after date, adopts special use to plow device during replacing and can remove easily locking strip 30 and former water blocking tape 10.
With reference to Fig. 2 and Fig. 4, the openend height h21 of described anchor slot 21 is less than the width L11 of anchor and position boss 11, be that water blocking tape 10 has auto-lock function in installation process, after two anchor and position boss 11 of water blocking tape 10 openends are packed anchor slot 21 into from vertical end of connection strap 20, form self-locking between anchor and position boss 11, the anchor slot 21, water blocking tape 10 dual-side sections can't deviate from from anchor slot 21 openends.
Described locking strip 30 can be stiffening member or elastic component.From multi-direction considerations such as anchoring effect, manufacturing costs, can preferably adopt elastomeric material to make, the turnover body that inboard support arm 30a, the outside support arm 30b that opens outside its section configuration is served as reasons consists of.With reference to Fig. 4, described water blocking tape 10 has the locking convex shoulder 12 that locking strip 30 lateral displacements is consisted of constraint.With reference to Fig. 1, after support type elastic locking bar 30 is packed anchor slot 21 into from vertical end of connection strap 20, the lower surface of inboard support arm 30a, inboard support arm 30b is close to anchor and position boss 11 upper walls all the time under the elastic force effect, limit respectively inboard support arm 30a, outside support arm 30b by anchor slot 21 sidewalls, locking convex shoulder 12, make locking strip 30 in anchor slot 21, can not produce lateral displacement, water blocking tape 10 tightly is crimped on the connection strap 20.
Described water blocking tape 10 can adopt elastomeric material, rubber-plastics material or other to have water proofing property, durable material, can preferably adopt neoprene or ethylene propylene diene rubber, wherein general area adopts neoprene monthly mean temperature-25 ~+60 ℃, extremely frigid zones to adopt ethylene propylene diene rubber monthly mean temperature-40 ~+60 ℃.Consider that connection strap 20 is non-exchange after bridge builds up, application life, requirement must reach 100 years, so the corrosion resistant metal material of connection strap 20 preferred employings.
The replaceable stretching device of railroad bridge of the present utility model is common to the railway ballastless bridge deck structure and tiny fragments of stone, coal, etc. bridge deck structure is arranged, and the embodiment 2 shown in the embodiment 1 shown in Fig. 1 and Fig. 5 is without tiny fragments of stone, coal, etc. bridge deck structure, and shown in Fig. 7 and Fig. 8 is that tiny fragments of stone, coal, etc. bridge deck structure is arranged.
With reference to Fig. 1 and Fig. 5, Fig. 6, described anchorage element 40 comprises the anchor bar 41 that is embedded in advance in the dash platform 62, and anchor bar 41 forms with the back side of connection strap 20 and is connected, and is connected with dash platform 62 arrangements of reinforcement.Connection strap 20 adopts easy welding material manufacturing among Fig. 1, Fig. 7, and anchor bar 41 front ends and connection strap 20 are welded to connect.Connection strap 20 adopts and is difficult for the welding material manufacturing among Fig. 5, Fig. 8, the back of connection strap 20 offers the dovetail groove 22 that extends along its length, be provided with the inner nut 22a that the cross section is swallow-tail form in the dovetail groove 22, the thread segment of anchor bar 41 front portions is connected with inner nut 22a, and is locked by the outer nut 41a on it.
With reference to Fig. 7 and Fig. 8, described anchorage element 40 also comprises the beam body built-in fitting 42 that is embedded in advance in the beam body 61, and beam body built-in fitting 42 is connected with topping 63 interior embedded ribs.The top that described topping 63 is positioned at 60 both sides, shrinkage joint is provided with the groove 63a that sinks with respect to end face; be provided with the gear tiny fragments of stone, coal, etc. cover plate 51 that covers shrinkage joint 60 on the groove 63a; gear tiny fragments of stone, coal, etc. cover plate 51 is fixed on the junction steel plate 52; insert in the rectangle positioning steel tube 53 lower end of junction steel plate 52, and the lower end of rectangle positioning steel tube 53 is connected with beam body built-in fitting 42.
The replaceable stretching device of railroad bridge of the present utility model is compared with existing stretching device and is had following advantage:
1, water blocking tape is installed, is changed conveniently.The railroad bridge stretching device is installed in below the railway roadbed, and the adhesive waterproof tape of railroad bridge stretching device must satisfy not to be opened " skylight ", do not affecting in the normal situation about moving of train and change.Can be completely achieved installation below railway roadbed, sleeper, track substrate, change water blocking tape by special-purpose machines and tools, because when changing water blocking tape, need not process railway ballast or track substrate under the sleeper, so do not affect the normal operation of train during operation, convenient, fast, safety can reduce the operation expense of railway greatly.
2, the chucking power of connection strap and water blocking tape is large, and water resistance is good, and possesses larger chucking power deposit.For prestress anchoraging system and the bridge pad system that protects the railroad bridge two ends; the railway stretching device must have extraordinary water resistance; and the quality of stretching device water resistance is to be determined by the gripping performance of water blocking tape, and chucking power is large, and water resistance is good.The waterproofing system of replaceable stretching device is a complete waterproof system that jointly is made of water blocking tape and locking strip.Satisfied in " the provisional technical condition of passenger transport special railway line bridge expanding device " requirement to the stretching device chucking power fully.
3, the device whole height is low, the beam-ends preformed groove is shallow.Owing to adopt highly lower connection strap, so the whole height of replaceable stretching device is low, can in the thick bridge deck pavement of 60mm, can install, do not destroy the waterproofing course of bridge floor, so not need to prefabrication of beam or when cast-in-place separately for the processing of stretching device set aside pre-embedded groove is installed, can reduce the cost of beam body, make things convenient for the beam body construction.
4, antiseptic property is good.The material of main part of stretching device adopts corrosion resistant metal material material, connection strap and cover plate part adopt galvanizing by dipping simultaneously, the barrier propterty of stretching device is guaranteed, and antiseptic property satisfies the requirement in " the provisional technical condition of passenger transport special railway line bridge expanding device " fully.
5, integral rigidity is good.Good integrity, the rigidity of connection strap are large, the rubber-tyred engineering truck can safety pass through, bring great convenience to engineering construction.
6, stretching device can satisfy the requirement of different strokes.Water blocking tape has adopted the form of U-shaped, and this form can adapt to the different spans beam very easily to the requirement of stretching device stroke, and the stroke of this stretching device is divided into five grades, is respectively 30mm, 60mm, 100mm, 150mm, 200mm.

Claims (10)

1. the replaceable stretching device of railroad bridge, comprise by anchorage element (40) and be fixed in a pair of connection strap (20) on the two side, shrinkage joint (60), and dual-side section forms the water blocking tape (10) that is connected with connection strap (20), connection strap (20) has the anchor slot (21) that the total length direction is extended, it is characterized in that: the dual-side section of described water blocking tape (10) has lower protruding anchor and position boss (11), and the section configuration of the lower recess (21a) of the section configuration of this anchor and position boss (11) and anchor slot (21) matches; Water blocking tape (10) dual-side section draws in the anchor slot (21) from the vertical end of connection strap (20), be pressed into locking strip (30) in the space between water blocking tape (10) upper surface and anchor slot (21) top, make water blocking tape (10) and connection strap (20) form anchor connection.
2. the replaceable stretching device of railroad bridge as claimed in claim 1, it is characterized in that: the openend height (h21) of described anchor slot (21) is less than the width (L11) of positioning boss (11).
3. the replaceable stretching device of railroad bridge as claimed in claim 1, it is characterized in that: described locking strip (30) is made by elastomeric material, its section configuration serve as reasons outer inboard support arm (30a), the turnover body that outside support arm (30b) consists of.
4. the replaceable stretching device of railroad bridge as claimed in claim 1 is characterized in that: described water blocking tape (10) has the locking convex shoulder (12) that locking strip (30) lateral displacement is consisted of constraint.
5. the replaceable stretching device of railroad bridge as claimed in claim 1, it is characterized in that: described anchorage element (40) comprises the anchor bar (41) that is embedded in advance with dash platform (62), anchor bar (41) forms with the back side of connection strap (20) and is connected, and is connected with dash platform (62) arrangement of reinforcement.
6. the replaceable stretching device of railroad bridge as claimed in claim 5, it is characterized in that: the back of described connection strap (20) offers the dovetail groove (22) that extends along its length, be provided with the inner nut (22a) that the cross section is swallow-tail form in the dovetail groove (22), the anterior thread segment of anchor bar (41) is connected with inner nut (22a), and is locked by the outer nut on it (41a).
7. the replaceable stretching device of railroad bridge as claimed in claim 5 is characterized in that: described anchorage element (40) also comprises the beam body built-in fitting (42) that is embedded in advance in the beam body (61), and beam body built-in fitting (42) is connected with dash platform (62) arrangement of reinforcement.
8. the replaceable stretching device of railroad bridge as claimed in claim 5, it is characterized in that: the top that described dash platform (62) is positioned at both sides, shrinkage joint (60) has the concave station (62a) that sinks with respect to end face, be provided with the gear tiny fragments of stone, coal, etc. cover plate (51) that covers shrinkage joint (60) on the concave station (62a), gear tiny fragments of stone, coal, etc. cover plate (51) is fixed on the junction steel plate (52), insert in the rectangle positioning steel tube (53) lower end of junction steel plate (52), and the lower end of rectangle positioning steel tube (53) is connected with beam body built-in fitting (42).
9. the replaceable stretching device of railroad bridge as claimed in claim 1 is characterized in that: described water blocking tape (10) adopts neoprene or ethylene propylene diene rubber to make.
10. the replaceable stretching device of railroad bridge as claimed in claim 1 is characterized in that: described connection strap (20) adopts corrosion-resistant metal materials to make.
CN 201220443049 2012-08-31 2012-08-31 Replaceable retractor device for roadway bridge Expired - Lifetime CN202865737U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787556A (en) * 2012-08-31 2012-11-21 中铁二院工程集团有限责任公司 Changeable retractor device for railroad bridge
CN103306455A (en) * 2013-06-20 2013-09-18 宜兴市华龙塑木新材料有限公司 Floor fastener
CN106555376A (en) * 2017-01-22 2017-04-05 中铁二院工程集团有限责任公司 A kind of non-fragment orbit railroad bridge retractor device
CN106835970A (en) * 2017-04-14 2017-06-13 杨文来 Railroad bridge Fast Installation expansion joint and its installation method
CN110029574A (en) * 2019-04-30 2019-07-19 南京博瑞吉工程技术有限公司 The novel bridge telescopic device and its installation method that can quickly repair
CN112240215A (en) * 2020-10-23 2021-01-19 中铁工程装备集团有限公司 Waterproof structure between water-stop strip and prefabricated component and construction method of waterproof structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787556A (en) * 2012-08-31 2012-11-21 中铁二院工程集团有限责任公司 Changeable retractor device for railroad bridge
CN103306455A (en) * 2013-06-20 2013-09-18 宜兴市华龙塑木新材料有限公司 Floor fastener
CN106555376A (en) * 2017-01-22 2017-04-05 中铁二院工程集团有限责任公司 A kind of non-fragment orbit railroad bridge retractor device
CN106835970A (en) * 2017-04-14 2017-06-13 杨文来 Railroad bridge Fast Installation expansion joint and its installation method
CN110029574A (en) * 2019-04-30 2019-07-19 南京博瑞吉工程技术有限公司 The novel bridge telescopic device and its installation method that can quickly repair
CN112240215A (en) * 2020-10-23 2021-01-19 中铁工程装备集团有限公司 Waterproof structure between water-stop strip and prefabricated component and construction method of waterproof structure

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