CN103614954A - Method for anchoring railroad sleeper screw spike at normal temperature - Google Patents
Method for anchoring railroad sleeper screw spike at normal temperature Download PDFInfo
- Publication number
- CN103614954A CN103614954A CN201310550144.XA CN201310550144A CN103614954A CN 103614954 A CN103614954 A CN 103614954A CN 201310550144 A CN201310550144 A CN 201310550144A CN 103614954 A CN103614954 A CN 103614954A
- Authority
- CN
- China
- Prior art keywords
- sleeper
- hole
- spike
- screw spike
- preformed hole
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Landscapes
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Disclosed is a method for anchoring a railroad sleeper screw spike at normal temperature. The method includes 1), pre-construction preparation, namely removing impurities in a reserved hole of a railroad sleeper; 2), hole bottom sealing by using a sealing material, namely laying the sleeper flat, placing the sealing material into the reserved hole of the sleeper from the top of the hole, and pushing the sealing material to a position close to the bottom of the reserved hole; 3), grouting, namely grouting an anchor agent into the reserved hole of the sleeper, evenly mixing the anchor agent before grouting, and then rapidly grouting the anchor agent into the reserved hole of the sleeper; 4), spike mounting, namely using a locator to insert the spike into the reserved hole; 5), taking off the locator after coagulating and hardening of the anchor agent to complete anchoring construction of the spike, wherein a cross section of the sealing material is a circular elastic element, and the maximum diameter of the cross section is larger than the minimum diameter of a lower cone hole of the reserved hole of the sleeper and smaller than the maximum diameter of the lower cone hole of the reserved hole of the sleeper. Compared with the prior art, the method has the advantages of reduced environmental pollution, guarantee of construction quality, improved construction efficiency, lower labor intensity and construction cost, and the like.
Description
technical fieldthe present invention relates to a kind of construction method, relate in particular to a kind of anchoring process of railroad sleeper screw spike.
background technologyat present, the anchorage style of railroad sleeper screw spike has two kinds, i.e. anti-anchor and positive anchor.Anti-anchor is for saving the operation at the bottom of shutoff sleeper preformed hole, sleeper from overturning repeatedly being carried out to anchoring, and the location of screw spike is to adopt easy retort stand to carry out.Positive anchor is without mobile sleeper, but at the bottom of needing first shutoff sleeper preformed hole, generally adopts the shutoff such as sand, cloth waste, pour into after anchoring material, screw spike locator is installed, according to the location of locator, railway spike is inserted in anchoring material, after anchoring material condenses, take off locator.
During positive anchor construction, need to be to carrying out shutoff at the bottom of sleeper preformed hole hole, during shutoff, substantially adopt the materials such as sand or cloth waste, with these material shutoff, be prone to the phenomenon of spillage, and need manually to carry out in a large number levelling of the land, shutoff is difficult to highly again determine, may cause anchorage depth deficiency also may waste anchoring material, after anchoring completes, must clear up support rail groove face, therefore, cost is higher.The anti-anchor method of general employing is constructed at present for this reason, because other normal temperature anchoring materials are longer time of setting, early strength increases slower, and the reason such as sclerous reaction is irreversible, should not adopt anti-anchor method, can only adopt thermoplastic, processing temperature is high, contaminated environment, endanger the healthy sulphur-bonded mortar of workman as anchoring material, carry out anti-anchor operation, anti-anchor method not only needs to pay that a large amount of manpowers repeatedly overturns that sleeper had not only endangered that anchoring material condenses (this is also the reason that can not adopt other anchoring materials) but also because adopting easy retort stand location to exert an influence to railway spike location.
The spike anchoring locator that existing and positive anchor is used in conjunction with adopts the rail support groove of class saddle type framework and sleeper to fit substantially, the two piece sleeve pipes coaxial with sleeper preformed hole are installed on framework, the fixed high cap of guiding is installed in sleeve pipe, during anchoring, take railway spike round platform as upper limit site, railway spike is inserted in sleeve pipe, utilize magnet or spring clamp to realize the location of railway spike.Existingly for railroad sleeper screw spike anchoring positioner, there is following deficiency:
(1) or adopt cast aluminium material to make, cost is more high-leveled and difficult to promote; Or adopt carbon steel rivet welding to make, when making, easily, because welding etc. produce manufacturability distortion, cause location inaccurate;
(2) if adopt sulphur-bonded mortar as anchoring material, during construction, temperature, up to 130-180 ℃, easily makes magnet demagnetization, causes locator to lose efficacy;
(3) anchoring material condenses the bond stress f to railway spike that produces while being not less than railway spike gravity w, can remove clamping during f≤w, completes location.It is all to railway spike chucking power f at positioner that existing positioner and railway spike depart from
0in situation about existing, directly apply external force f
1carry out separation, external force acts directly on the bonding surface of anchoring material and railway spike by railway spike, exists f
1﹥ f
0﹥ w, only has the f as f ﹥
1time, remove the structure that chucking power is just unlikely to destroy anchoring material, otherwise, will cause anchoring material structural failure, construction quality cannot be guaranteed, even produce potential safety hazard; And f is the increasing function of time, for avoid having the possibility of destruction when anchoring material does not fully harden, just need to extend to remove the time clamping, while especially adopting cement based anchoring material, extend the clamping time, can strengthen construction period, reduce efficiency of construction.
summary of the inventionthe object of the present invention is to provide a kind of minimizing environment pollution, guarantee construction quality, improve efficiency of construction, reduce construction cost, the railroad sleeper screw spike normal temperature anchoring process reducing labor intensity.
A kind of railroad sleeper screw spike normal temperature anchoring process that the present invention proposes, step is as follows:
(1) before construction, prepare: the impurity such as the concrete in removing sleeper preformed hole or dust;
(2) at the bottom of sealing of hole: sleeper is set level, adopt plug back cover, plug is that cross section is circular such as spherical, cylindrical, oval etc. elastic body, such as the conventional sea-ball of selling on market, ball, foamed ball, the non-woven bag of being filled by foamed plastics etc., to reduce costs, shutoff is tight; The maximum gauge of described plug is greater than the minimum diameter of sleeper preformed hole bottom taper hole, is less than the maximum gauge of sleeper preformed hole bottom taper hole; First plug compression is diminished and puts into sleeper preformed hole by top, hole, plug can restore to the original state rapidly, and plug is pushed near position at the bottom of preformed hole hole, and generally making the end top, top of plug and the distance between sleeper support rail groove face is 140mm;
(3) grouting: pour into Anchor Agent in the preformed hole of sleeper, Anchor Agent is commercially available normal temperature Anchor Agent, such as: the agent of TT-MG type railway spike anchoring, the agent of TS-A type railway spike anchoring etc., before perfusion, first Anchor Agent is stirred on request, then inject rapidly sleeper preformed hole, the amount of pouring into is Anchor Agent liquid level and rail support groove interplanar distance 8-10mm;
(4) railway spike is installed: utilize locator that railway spike is inserted in preformed hole, insertion depth is generally the lower surface of railway spike round platform and the distance between sleeper support rail groove face is 0-2 mm or 0-6mm;
(5) after Anchor Agent setting and harden, generally after 15-30 minutes, take off locator, clear up support rail groove face, complete the anchoring construction of railway spike.
Locator in above-mentioned steps (4) comprises substrate, location-plate, positioning pipe, handle, flap and magnet, on the substrate that wherein can match with sleeper rail support groove, establish two through holes corresponding with sleeper preformed hole, the diameter of described through hole is greater than the bore of sleeper preformed hole; The upper surface of aforesaid substrate is provided with location-plate, on this location-plate, establish two corresponding with above-mentioned through hole and coaxial with sleeper preformed hole through holes, be locating hole, the diameter of described locating hole is less than the round platform external diameter of screw spike and is not less than the diameter of the non-round platform of screw spike portion; The upper surface of above-mentioned location-plate establish two respectively and internal diameter coaxial with described locating hole be not less than the body of locating hole diameter, i.e. positioning pipe; The height of described positioning pipe is less than or equal to the height between screw spike top and its round platform upper surface; The upper surface of above-mentioned location-plate and be provided with a "door" type handle between described two positioning pipes, two corner positions of this handle are respectively equipped with the flap that can rotate, described flap is provided with magnet towards the bottom of positioning pipe one side, when described flap turns to magnet level, magnet be positioned at pipe directly over and the lower surface height of magnet identical with the upper surface height of screw spike, be that magnet is realized the absorption to screw spike, the upper surface of screw spike is adsorption plane.
For making above-mentioned positioning pipe more firm, be convenient to location, best, in the surrounding of described positioning pipe, establish floor.
On described location-plate, the lead to the hole site of counterpart substrate is established several through holes, i.e. spout hole, and spout hole is opened in positioning pipe around, and during in order to construction, in sleeper preformed hole, unnecessary anchoring material overflows.
The anchor and position method of the locator in above-mentioned steps (4) is: will treat that two screw spikes of anchoring insert in the positioning pipe of locator, utilize the magnet on flap that screw spike is adsorbed, the upper surface of screw spike round platform is stuck in positioning pipe lower end position, and the round platform top of railway spike spiral is arranged in positioning pipe; Hand-held handle, two screw spikes that install are inserted rapidly in sleeper preformed hole, the substrate lower end of locator is attached on the support rail groove face of sleeper, the round platform bottom of screw spike is inserted in preformed hole, according to the thickness of substrate, can guarantee the distance that requires screw spike to insert, after the anchoring material setting and harden in preformed hole, the non-magnet end of pressing flap with have gentle hands, now magnet is separated with screw spike, then mentions locator.
The present invention is at the bottom of shutoff preformed hole hole time, employing has flexible plug, because plug has elasticity, while being entered by sleeper preformed hole top taper hole, can first push plug, make it to be entered by the more small-bore of preformed hole, utilize straight-bar to promote plug to direction at the bottom of hole, when plug moves to preformed hole and is greater than the position of its diameter, plug reinstatement, continue to promote plug to top end top and sleeper rail support groove interplanar distance 140mm, because plug cross section is circular elastic body, plug guarantees that to top end top equivalence treats that anchorage depth is that the 145-150mm(construction requirement degree of depth is 140-160mm during with sleeper rail support groove interplanar distance 140mm), plug is squeezed in and requires position, make gapless between itself and reserved hole wall, and can play.
Locator of the present invention is when separated with railway spike, because screw spike round platform is subject to positioning pipe lower end, limit, magneticaction when separated in railway spike inside but not stressed between railway spike and anchoring material, can make anchoring material avoid outside destroy, bolt is stayed in anchoring material, has completed anchoring operation.Locator substrate size of the present invention can be according to needing the sleeper model of anchoring to determine, guarantee that substrate may be seated on the rail support groove of sleeper, the thickness of substrate is as the criterion according to the distance between the screw spike round platform lower surface that needs after anchoring to reach and rail support groove, distance between general construction requirement screw spike round platform lower surface and rail support groove is 0-6mm, the thickness of general substrate is 5mm, identical with railway spike round platform thickness, can better meet designing requirement; Substrate of the present invention, flap adopt for example ABS plastic material of engineering plastics, adopt injection moulding straight forming, and the injection mo(u)lding that is connected as a single entity of location-plate, positioning pipe and handle, all adopts engineering plastics material, between each parts, is bolted and is fixed together.
The present invention compared with prior art tool has the following advantages:
1, this method can adopt the normal temperature anchoring material of cement based, replaces sulphur-bonded mortar, has not only reduced the pollution to environment, reduces the harm to staff, and improves working environment, improves efficiency of construction;
2, adopt elasticity plug to preformed hole hole bottom seal, not only can avoid the phenomenon of spillage to occur, and without manually carrying out levelling of the land, be convenient to determine shutoff height, both can guarantee anchorage depth, the anchoring material of can avoiding waste again;
3, accurate positioning, guarantee workmanship, improve efficiency of construction, shorten construction period, can avoid because of the distortion of welding or heat construction brings, there will not be demagnetization phenomenon, guarantee positioning accurate accuracy, existing locator is when separated with railway spike, because chucking power is greater than railway spike gravity, when anchoring material intensity is greater than bolt gravity, can remove locator, and when anchoring material intensity is greater than bolt gravity and is less than chucking power, directly chucking power is removed, cause external force to directly act on anchoring material, will destroy the structure of anchoring material, cause anchoring failure, affect construction quality, and just need to increase the time of waiting for when by the time anchoring material intensity is greater than chucking power, the present invention is owing to can easily applying magnetic force and removing magnetic force, protected anchoring material to condense the initial stage because removing the improper destruction causing of chucking power, guaranteed the quality of construction, first remove chucking power more separated mode also greatly improved operating efficiency, simultaneously, without anchoring material, fully condense and can remove chucking power, greatly shortened construction period,
4, the locator that this method adopts is by engineering plastics injection mo(u)lding, not only make main body more firm, accurate positioning, and lighter, with low cost, long service life, in addition, this locator can be used in conjunction with the sleeper of different model, can regulate according to practice of construction situation, compliance is stronger, and range of application is more extensive.
accompanying drawing explanationfig. 1 is the schematic diagram of plug and preformed hole at the bottom of sealing of hole time.
Fig. 2 pours into the schematic diagram after Anchor Agent in sleeper preformed hole.
Fig. 3 is that locator duty master of the present invention looks generalized section.
Fig. 4 is locator duty schematic top plan view of the present invention.
Fig. 5 is that generalized section is looked on the locator duty of the present invention right side.
the specific embodimentbelow just by reference to the accompanying drawings to the present invention's a kind of railroad sleeper screw spike normal temperature anchoring process that elaborates, step is as follows:
(1) before construction, prepare: the impurity such as the concrete in removing sleeper preformed hole or dust.
(2) at the bottom of sealing of hole: as shown in Figure 1, sleeper 1 is set level, sea-ball 2 is put into sleeper preformed hole 3 by top, hole, sea-ball is pushed near position at the bottom of preformed hole hole, making the end top, top of sea-ball and the distance between sleeper support rail groove face 4 is 140mm.
(3) grouting: as shown in Figure 2, in the preformed hole 3 of sleeper, pour into TS-A type railway spike anchoring agent 5, before perfusion, first Anchor Agent is stirred on request, then inject rapidly sleeper preformed hole, the amount of pouring into is Anchor Agent liquid level and rail support groove interplanar distance 10mm.
(4) railway spike is installed: utilize locator that railway spike is inserted in preformed hole, as shown in Fig. 3, Fig. 4 and Fig. 5, locator comprises substrate, location-plate, positioning pipe, handle, flap and magnet, the substrate 3 that can match with sleeper 1 rail support groove 2 is comprised of 3 blocks of square plates that are connected as a single entity, third side's plate 3-1 of substrate is identical with wide difference with the length of sleeper rail support groove, along the both sides of third side's plate length direction, establish respectively the bar shaped side plate 3-2 to downward-extension, bar shaped side's plate is identical with sleeper rail support groove corner angle with the angle of third side's plate, on third side's plate of substrate, establish two through holes corresponding with sleeper preformed hole 45, the diameter of described through hole is greater than the bore of sleeper preformed hole, the side of being bolted, the third side's plate upper surface plate of aforesaid substrate, it is location-plate, on this location-plate, establish two through holes corresponding with above-mentioned through hole, it is locating hole 7, described two locating holes coaxially arrange with the preformed hole of sleeper respectively, and the diameter of locating hole be less than screw spike 6 round platform external diameter, equal the diameter of the non-round platform of railway spike portion, two and bodys of with location-plate being connected as a single entity coaxial with described locating hole are respectively established in the upper surface of above-mentioned location-plate, and positioning pipe 8, the internal diameter of positioning pipe is identical with the diameter of locating hole and highly equal the height between screw spike top and its round platform upper surface, the upper surface of above-mentioned location-plate and be provided with a "door" type handle 9 being connected as a single entity with it between described two positioning pipes, the lower end of handle is connected with location-plate, two corner positions of this handle are respectively equipped with two and are connected as a single entity with handle and vertical with positioning pipe circle cover respectively, it is guide 10, grafting bearing pin 11 in guide, flap 12 is connected with bearing pin, the rotation of realization on handle, described flap is stripe board, its both sides, lower end near interposition install two with its relative journal stirrup with holes 13 that is connected as a single entity, two journal stirrups are connected with the two ends of bearing pin respectively, and the nut that passes through a side is by journal stirrup axial limiting, described flap is provided with counter sink magnet 14 towards the bottom of positioning pipe one side, and magnet is by being bolted on flap through flap, when described flap turns to magnet level, magnet be positioned at pipe directly over and the lower surface height of magnet identical with the upper surface height of screw spike, magnet is realized the absorption to screw spike, the upper surface of screw spike is adsorption plane, the surrounding of described positioning pipe establishes the bar shaped floor 15 being connected as a single entity with it, and floor and location-plate are connected as a single entity, and one side is connected with positioning pipe outer wall, and lower end is connected with location-plate upper surface, on described location-plate, the lead to the hole site of counterpart substrate is established several through holes, and spout hole 16, and spout hole is opened in positioning pipe around,
By two, treat that anchoring screw spike inserts in positioning pipe, utilize the magnet on flap that screw spike is adsorbed, the upper surface of screw spike round platform is stuck in positioning pipe lower end position, and the round platform top of screw spike is arranged in positioning pipe; Hand-held handle, two screw spikes that install are inserted rapidly in sleeper preformed hole, the substrate lower end of locator is attached on the support rail groove face of sleeper, and the round platform bottom of screw spike is inserted in preformed hole, and insertion depth is that the lower surface of railway spike round platform and the distance between sleeper support rail groove face are 1mm.
After (5) 30 minutes, press the non-magnet end of flap with have gentle hands, now magnet is separated with screw spike, then mentions locator, clears up support rail groove face, completes the anchoring construction of railway spike.
Claims (7)
1. a railroad sleeper screw spike normal temperature anchoring process,
(1) before construction, prepare: remove the impurity in sleeper preformed hole;
(2) at the bottom of sealing of hole: sleeper is set level, adopted plug back cover, plug is put into sleeper preformed hole by top, hole, plug is pushed near position at the bottom of preformed hole hole;
(3) grouting: pour into normal temperature Anchor Agent in the preformed hole of sleeper, first Anchor Agent is stirred before perfusion, then inject rapidly sleeper preformed hole;
(4) railway spike is installed: utilize locator that railway spike is inserted in preformed hole;
(5) after Anchor Agent setting and harden, take off locator, complete the anchoring construction of railway spike;
It is characterized in that: described plug is that cross section is round and elastic body, and its maximum gauge is greater than the minimum diameter of sleeper preformed hole bottom taper hole, is less than the maximum gauge of sleeper preformed hole bottom taper hole.
2. railroad sleeper screw spike normal temperature anchoring process according to claim 1, is characterized in that: described plug is spherical cylindrical or oval.
3. railroad sleeper screw spike normal temperature anchoring process according to claim 1, is characterized in that: described plug is sea-ball.
4. railroad sleeper screw spike normal temperature anchoring process according to claim 1, is characterized in that: described plug is the non-woven bag of being filled by foamed plastics.
5. railroad sleeper screw spike normal temperature anchoring process according to claim 1, it is characterized in that: described locator comprises substrate, location-plate, positioning pipe, handle, flap and magnet, on the substrate that wherein can match with sleeper rail support groove, establish two through holes corresponding with sleeper preformed hole, the diameter of described through hole is greater than the bore of sleeper preformed hole; The upper surface of aforesaid substrate is provided with location-plate, establishes two through holes corresponding with above-mentioned through hole on this location-plate, i.e. locating hole, and described two locating holes coaxially arrange with the preformed hole of sleeper respectively, and the diameter of locating hole is less than the round platform external diameter of screw spike; Two the identical body of diameter coaxial with described locating hole and internal diameter and locating hole, i.e. positioning pipes are respectively established in the upper surface of above-mentioned location-plate; The height of described positioning pipe is less than or equal to the height between screw spike top and its round platform upper surface; The upper surface of above-mentioned location-plate and be provided with a "door" type handle between described two positioning pipes, two corner positions of this handle are respectively equipped with the flap that can rotate, described flap is provided with magnet towards the bottom of positioning pipe one side, when described flap turns to magnet level, magnet be positioned at pipe directly over and the lower surface height of magnet identical with the upper surface height of screw spike, be that magnet is realized the absorption to screw spike, the upper surface of screw spike is adsorption plane.
6. railroad sleeper screw spike normal temperature anchoring process according to claim 4, is characterized in that: the surrounding of described positioning pipe establishes floor.
7. railroad sleeper screw spike normal temperature anchoring process according to claim 4, is characterized in that: on described location-plate, the lead to the hole site of counterpart substrate is established spout hole, and spout hole is opened in positioning pipe around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550144.XA CN103614954B (en) | 2013-11-08 | 2013-11-08 | Method for anchoring railroad sleeper screw spike at normal temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550144.XA CN103614954B (en) | 2013-11-08 | 2013-11-08 | Method for anchoring railroad sleeper screw spike at normal temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103614954A true CN103614954A (en) | 2014-03-05 |
| CN103614954B CN103614954B (en) | 2015-07-08 |
Family
ID=50165669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310550144.XA Expired - Fee Related CN103614954B (en) | 2013-11-08 | 2013-11-08 | Method for anchoring railroad sleeper screw spike at normal temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103614954B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028393A (en) * | 2022-05-26 | 2022-09-09 | 中德新亚建筑材料有限公司 | Insulating spike anchoring agent and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599051Y (en) * | 2003-01-30 | 2004-01-14 | 万宗池 | Rail fastening device |
| JP2007126833A (en) * | 2005-11-01 | 2007-05-24 | Sekisui Chem Co Ltd | Nail hole repairing method of sleeper |
| CN201148574Y (en) * | 2008-01-07 | 2008-11-12 | 刘振安 | Fastening structure of railway concrete sleeper spike nail |
| CN201162156Y (en) * | 2008-02-02 | 2008-12-10 | 潍坊市大元实业有限公司 | Spike anchoring frame |
| CN102775115A (en) * | 2012-08-03 | 2012-11-14 | 北京中铁润海科技有限公司 | Anchoring mortar and application method thereof |
-
2013
- 2013-11-08 CN CN201310550144.XA patent/CN103614954B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599051Y (en) * | 2003-01-30 | 2004-01-14 | 万宗池 | Rail fastening device |
| JP2007126833A (en) * | 2005-11-01 | 2007-05-24 | Sekisui Chem Co Ltd | Nail hole repairing method of sleeper |
| CN201148574Y (en) * | 2008-01-07 | 2008-11-12 | 刘振安 | Fastening structure of railway concrete sleeper spike nail |
| CN201162156Y (en) * | 2008-02-02 | 2008-12-10 | 潍坊市大元实业有限公司 | Spike anchoring frame |
| CN102775115A (en) * | 2012-08-03 | 2012-11-14 | 北京中铁润海科技有限公司 | Anchoring mortar and application method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 汪加蔚: "我国铁路预应力混凝土轨枕的研究发展动态", 《混凝土与水泥制品》 * |
| 陈锋: "铁路轨枕新型锚固施工技术", 《山西建筑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028393A (en) * | 2022-05-26 | 2022-09-09 | 中德新亚建筑材料有限公司 | Insulating spike anchoring agent and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103614954B (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203684398U (en) | Device for positioning embedded parts in reinforced concrete structure | |
| CN203836393U (en) | Concrete pump pipe fixing clamp for concrete floor | |
| CN205735482U (en) | A kind of structure of fixing built-in fitting | |
| CN103590541A (en) | Grout sleeve for connecting prefabricated member steel bars and construction method of grout sleeve | |
| JP2012077547A (en) | Connection method and connection structure of precast members | |
| CN206971769U (en) | A kind of rubber support installation positioning special purpose device | |
| CN105888078A (en) | U-shaped building embedded part and construction method of anchoring component of U-shaped building embedded part | |
| CN103614954B (en) | Method for anchoring railroad sleeper screw spike at normal temperature | |
| CN202414979U (en) | Base-adjustable track connecting device on concrete base | |
| CN105970803A (en) | Shearing resisting energy consumption device and construction method of prefabricated pier | |
| CN201284485Y (en) | Fixing device of stone bolt | |
| CN103556786A (en) | Connecting and grouting sleeve for assembled prefabricated member steel bars and construction method thereof | |
| CN205660874U (en) | Cutting ferrule is fixed to mould | |
| CN203668776U (en) | Anchoring positioner for railroad sleeper screw pike | |
| CN103469812A (en) | Stamping device civil engineering installation level control device and installing method | |
| CN104265005B (en) | The back ruggedized construction that a kind of steel plate combines with reinforcing bar | |
| CN204401377U (en) | Adjustable ballastless track self-compacting concrete perfusion gang form | |
| CN206267009U (en) | A kind of bridge vertical prestressed reinforcement tensioning anchor plate | |
| CN104695977B (en) | Rectangular Tunnel duct piece steel mould | |
| CN208379447U (en) | A kind of elongated prestressed pore passage positioning device in the prefabricated longitudinal direction of short line casting box girder segment | |
| CN208266708U (en) | A kind of road and bridge crack reparation structure | |
| CN204001431U (en) | The connection grout sleeve of prefabricated member reinforcing steel bar | |
| CN208996319U (en) | Assembled arthitecutral structure concrete vertical member docking structure | |
| CN208310215U (en) | A kind of construction through-flooring sleeve fixing device | |
| CN209653381U (en) | A kind of protective device for post-cast strip floor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20181108 |