CN114412473A - Underpass high-speed railway base pipe curtain supporting structure and construction process thereof - Google Patents
Underpass high-speed railway base pipe curtain supporting structure and construction process thereof Download PDFInfo
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- CN114412473A CN114412473A CN202111585601.XA CN202111585601A CN114412473A CN 114412473 A CN114412473 A CN 114412473A CN 202111585601 A CN202111585601 A CN 202111585601A CN 114412473 A CN114412473 A CN 114412473A
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 210000001503 joint Anatomy 0.000 claims description 50
- 239000002689 soil Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 16
- 239000000314 lubricant Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000002349 favourable effect Effects 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003974 emollient agent Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The application relates to the technical field of pipe curtain support, in particular to a base pipe curtain support structure of a underpass high-speed railway and a construction process thereof, wherein the base pipe curtain support structure comprises a support pipe, the support pipe comprises a plurality of pipe joints, and the pipe joints are sequentially connected along the axis of the pipe joints; the outer pipe wall of the pipe joint is provided with at least two lock catch connecting grooves along the axial direction; the outer pipe wall of tube coupling is provided with at least one public hasp and at least one female hasp, public hasp and female hasp all pass through the hasp spread groove is connected the tube coupling, public hasp and female hasp cooperate, and adjacent two prop up the pillar and pass through public hasp and female hasp are connected. This application has the installation accuracy of hasp between the adjacent steel pipe in the improvement pipe curtain, reduces the pipe curtain top and advances the effect of the interference problem of strutting.
Description
Technical Field
The application relates to the technical field of pipe curtain support, in particular to a base pipe curtain support structure of a low-pass high-speed railway and a construction process of the base pipe curtain support structure.
Background
The existing railway hinders the urban traffic development, and the phenomenon that the urban main road passes through the railway under is generally increased. On the basis, with the increasing number of high-speed railway lines, the demand of going through a high-speed railway roadbed also begins to increase. The pipe-curtain construction method is one of important construction methods for underpass of roadbed, and is often applied to large-section underground excavation tunnel. The pipe curtain construction method comprises the steps of jacking steel pipes around a proposed tunnel by using a pipe jacking technology, stopping water among the steel pipes by using locking ports and the like to form a watertight advanced support underground space, excavating soil body in the surrounding range of a pipe curtain under the protection of a large-rigidity pipe curtain, and pouring a main structure. The pipe curtain forms a temporary supporting structure with large rigidity, so that the deformation of the earth surface caused by excavation can be reduced, the influence on surrounding buildings is avoided, and the pipe curtain has incomparable advantages for projects with shallow large-section soft soil, dense buildings and high environmental protection requirements.
In the related art, because the tunnel span is large, a single steel pipe is often required to be introduced into the soil body in a multi-section sequential welding and sequential jacking mode. In the construction process, adjacent steel pipes in the pipe curtain need to be manually welded with mutually matched lock catches in advance, and the lock catches extend along the axial direction of the steel pipes. After adjacent steel pipes are sequentially pushed into the soil body, on one hand, the lock catches and the steel pipes connected with the lock catches are sealed, on the other hand, the lock catches are sealed through grouting between the lock catches which are mutually locked, and therefore a water-stopping sealing connection structure is finally formed.
However, the accuracy of manually welding the lock catches on the construction site is limited in control capability, and when a large butt joint error exists between the lock catches which are matched with adjacent steel pipes, the interference on the axial jacking accuracy of the steel pipes is easily caused, so that the smooth proceeding of the integral jacking support of the pipe curtain is not facilitated.
Disclosure of Invention
In order to improve the installation accuracy of hasp between adjacent steel pipe in the pipe curtain, reduce the pipe curtain and push into the interference problem of strutting, this application provides a wear high railway base pipe curtain supporting construction under and construction process thereof.
First aspect, the application provides a wear high-speed railway parent tube curtain supporting construction down adopts following technical scheme:
a base pipe curtain supporting structure of a low-pass high-speed railway comprises a supporting pipe, wherein the supporting pipe comprises a plurality of pipe joints, and the pipe joints are sequentially connected along the axis of the pipe joints;
the outer pipe wall of the pipe joint is provided with at least two lock catch connecting grooves along the axial direction;
the outer pipe wall of tube coupling is provided with at least one public hasp and at least one female hasp, public hasp and female hasp all pass through the hasp spread groove is connected the tube coupling, public hasp and female hasp cooperate, and adjacent two prop up the pillar and pass through public hasp and female hasp are connected.
Through adopting above-mentioned technical scheme, the lock catch spread groove is seted up in advance to the tube coupling, the hookup location of mechanical location public hasp and female hasp in advance promptly, make things convenient for site operation personnel to dock tube coupling and public hasp, female hasp fast, be favorable to along the accurate guide of tube coupling axial, location public hasp and female hasp, be convenient for further to public hasp, female hasp and tube coupling carry out reinforcement operations such as welding, improve the installation accuracy of adjacent public hasp, the female hasp of strutting intertube in the pipe curtain, reduce the interference problem of strutting the pipe top and advancing to strut.
In a specific implementation scheme, a prefabricated ring is sleeved at one end of the outer pipe wall of the pipe joint, the male lock catch and the female lock catch are fixedly connected with the prefabricated ring, and a positioning groove for clamping the prefabricated ring is formed in the outer pipe wall of the pipe joint along the axial direction of the pipe joint;
when the prefabricated ring joint the constant head tank, public hasp and female hasp joint correspond the hasp spread groove.
Through adopting above-mentioned technical scheme, constructor is in advance with required public hasp of tube coupling, the prefabricated ring of female hasp fixed connection, then with prefabricated ring butt joint constant head tank to make the hasp spread groove that public hasp, the synchronous joint of female hasp correspond, be favorable to constructor synchronous high-speed joint public hasp and female hasp, improve the counterpoint installation effectiveness of public hasp, female hasp, the constant head tank is favorable to fixing a position the hookup location of prefabricated ring and tube coupling, improves the stability of prefabricated ring joint tube coupling.
In a specific possible embodiment, the preformed ring is provided with a preformed groove for clamping the male locking device and the female locking device;
when the prefabricated ring is clamped with the positioning groove, the prefabricated groove is communicated with the lock catch connecting groove.
Through adopting above-mentioned technical scheme, the prefabricated groove is seted up in advance to the prefabricated ring, and the hookup location of mechanical location public hasp, female hasp and prefabricated ring in advance is favorable to further improving the installation accuracy of public hasp, female hasp promptly, reduces public hasp, female hasp because of the installation error on the prefabricated ring causes the problem that can't connect the hasp spread groove.
In a specific embodiment, when two adjacent pipe sections are connected, a slope is formed between the end wall of the prefabricated ring of one pipe section and the end wall of the other pipe section.
Through adopting above-mentioned technical scheme, when two adjacent tube couplings are connected, one of them tube coupling passes through the end wall of prefabricated ring end wall butt joint another tube coupling, preformation is domatic between prefabricated ring and relative tube coupling end wall to make things convenient for constructor flash welded two adjacent tube couplings, improve adjacent tube coupling welding strength.
In a specific possible implementation scheme, a butt-joint convex ring is fixed at one end of the pipe joint, and a butt-joint groove for the butt-joint convex ring to be in sealed insertion is formed in the other end of the pipe joint.
By adopting the technical scheme, when the adjacent pipe joints are butted, one pipe joint is in sealed connection with the butt joint groove of the other pipe joint through the butt joint convex ring, so that on one hand, the connection stability of the adjacent pipe joints is favorably enhanced, on the other hand, the butt joint convex ring and the butt joint groove in sealed connection improve the connection sealing performance of the adjacent pipe joints, and the quick sealing grouting inside the whole supporting pipe is favorably realized.
In a specific implementation scheme, the male lock catch is provided as a first lock catch, the first lock catch extends along the axial direction of the pipe joint, and the first lock catch is fixedly connected with a first pipe joint block for clamping the lock catch connecting groove;
the female lock catch is arranged as a locking pipe II, and a pipe joint block II used for clamping the lock catch connecting groove is fixed on the locking pipe II;
the pipe wall of the locking pipe II is provided with a yielding groove along the self axial direction, the locking pipe I is guided into the locking pipe II through one end of the locking pipe II, and the pipe joint block I extends out of the yielding groove of the locking pipe II.
Through adopting above-mentioned technical scheme, the halving pipe one relies on self tubular structure with halving pipe two, easily processing and convenient quick mutual butt joint, and pipe connector piece one, pipe connector piece two are favorable to being fast with halving pipe one, halving pipe two location connection corresponding hasp spread groove.
In a specific implementation scheme, a plurality of slurry permeating holes are formed in the pipe wall of the first locking pipe, and the plurality of slurry permeating holes are distributed along the axial direction and the circumferential direction of the pipe wall of the first locking pipe.
Through adopting above-mentioned technical scheme, constructor can pour into stagnant water emollient into by the tip of lock joint pipe one, and the hole that permeates thick liquid makes things convenient for stagnant water emollient to disperse fast and be full of to lock joint pipe two in, is favorable to further strengthening the stability of the structural connection after lock joint pipe one, lock joint pipe two lock joints and the slip casting.
In a specific possible embodiment, when two adjacent pipe joints are axially connected, two adjacent locking pipes one and two adjacent locking pipes two are respectively communicated.
Through adopting above-mentioned technical scheme, the back is connected to adjacent tube coupling, and adjacent locking pipe one and adjacent locking pipe two communicate in order to improve slip casting efficiency and sealed effect, further improves adjacent locking pipe one simultaneously, adjacent locking pipe two connection structure stability.
In a second aspect, the application provides a construction process for supporting a base pipe curtain of a low-pass high-speed railway, which adopts the following technical scheme:
a construction process for supporting a base pipe curtain of a lower-passing high-speed railway comprises the following steps:
step one, hoisting a plurality of pipe joints, sequentially carrying out butt welding along the axial direction of the pipe joints to form an integral supporting pipe, and repeating the step one to obtain the number of the required supporting pipes;
secondly, pushing the supporting pipe into the soil layer by the jacking pipe;
step three, drilling holes in soil layers below the supporting pipes at the top and performing grouting treatment to form supports for the supporting pipes at the top, drilling holes in soil layers on the left side and the right side of the supporting pipes at the side positions and performing grouting treatment to form supports for the side surfaces of the supporting pipes at the side positions;
and step four, filling concrete into the supporting pipe.
In a specific possible embodiment, a water-stopping lubricant is injected into the male and female lock catches between the first step and the second step.
In summary, the present application includes at least one of the following beneficial technical effects:
the connecting positions of the male lock catch and the female lock catch are mechanically positioned in advance, so that field construction personnel can conveniently and rapidly butt joint the pipe joint, the male lock catch and the female lock catch can be accurately guided and positioned along the axial direction of the pipe joint, the reinforcing operations such as welding and the like can be further conveniently carried out on the male lock catch, the female lock catch and the pipe joint, the mounting precision of the male lock catch and the female lock catch between adjacent supporting pipes in a pipe curtain is improved, and the interference problem of supporting the top of the supporting pipe in a supporting mode is reduced;
the method comprises the following steps of fixedly connecting a male lock catch and a female lock catch required by a pipe joint with a prefabricated ring in advance, and then butting the prefabricated ring with a positioning groove to enable the male lock catch and the female lock catch to be synchronously clamped with corresponding lock catch connecting grooves, so that constructors can conveniently and synchronously connect the male lock catch and the female lock catch, and the alignment installation efficiency of the male lock catch and the female lock catch is improved;
the first locking pipe and the second locking pipe depend on self tubular structures, are easy to process and convenient and quick to butt, and the first pipe connecting block and the second pipe connecting block are favorable for quickly positioning and connecting the first locking pipe and the second locking pipe with corresponding locking connecting grooves.
Drawings
Fig. 1 is a schematic structural diagram for embodying the completion of the jacking of the integral pipe screen in embodiment 1 of the present application.
Fig. 2 is an exploded view of the structure embodying the pipe joint, the preformed ring, the male locking device and the female locking device in example 1 of the present application.
Fig. 3 is a schematic structural view showing the connection of the supporting pipes arranged horizontally and longitudinally in example 1 of the present application.
Fig. 4 is a cross-sectional view of the abutting convex ring and the abutting concave groove for embodying the state in which two pipe joints are connected in embodiment 1 of the present application.
Fig. 5 is a partial sectional view of a down-notch weld for embodying a connected state of two pipe joints in embodiment 1 of the present application.
Fig. 6 is a schematic structural view of the connection between two horizontally arranged supporting pipes in example 2 of the present application.
Reference number description, 1, support tube; 11. pipe joints; 111. a lock catch connecting groove; 112. positioning a groove; 113. a ring groove; 114. a slope surface; 115. butting the convex rings; 116. butting the grooves; 117. welding a welding opening; 12. prefabricating a ring; 121. pre-groove preparation; 122. positioning blocks; 2. a male lock catch; 21. locking the first pipe; 211. a slurry penetration hole; 22. a pipe connection block I; 23. a connecting plate; 3. a female lock catch; 31. locking the pipe II; 311. a yielding groove; 32. a pipe connecting block II; 4. grouting a reinforcing layer; 5. a concrete filling layer; 6. and (5) stopping the water and lubricating layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses high-speed railway base pipe curtain supporting construction is worn down.
Example 1:
referring to fig. 1, a wear high-speed railway base pipe curtain supporting construction down includes a support pipe 1, and support pipe 1 arranges in proper order in the subgrade soil body that the top advances to have a plurality of in order to form whole pipe curtain, and the construction of passing the tunnel down is gone on in the pipe curtain, and the pipe curtain forms the support to the top road bed, need not top road reconstruction, does not influence the normal traffic in ground and can carry out the tunnel construction of below. The cross section of the pipe curtain in the embodiment is arranged to be v 21274, and the pipe curtain in other embodiments can be arranged to be arched, square, semicircular and the like.
Referring to fig. 2 and 3, the single support tube 1 includes a plurality of tube segments 11, and the plurality of tube segments 11 are sequentially connected along their axes. In this embodiment, the single supporting pipe 1 is composed of two pipe joints 11, and in other embodiments, the number of the pipe joints 11 can be flexibly set according to the actual tunnel span.
The outer pipe wall of the pipe joint 11 is provided with at least two locking and connecting grooves 111 along the axial direction, in this embodiment, the outer pipe wall of the single pipe joint 11 is provided with a pair of locking and connecting grooves 111, and the pair of locking and connecting grooves 111 are symmetrical with respect to the center of the axis of the pipe joint 11. The outer pipe wall of tube coupling 11 is provided with at least one public hasp 2 and at least one female hasp 3, and it is provided with a public hasp 2 and a female hasp 3 to correspond a pair of hasp connecting groove 111 in this embodiment, and public hasp 2 and female hasp 3 and a pair of hasp connecting groove 111 one-to-one, and public hasp 2 and female hasp 3 all pass through hasp connecting groove 111 and connect tube coupling 11. The male lock catch 2 is matched with the female lock catch 3, and the two adjacent protective tubes 1 are connected with the female lock catch 3 through the male lock catch 2.
In order to facilitate the constructor to quickly assemble the male locking device 2 and the female locking device 3 on the pipe joint 11, referring to fig. 2 and 3, a ring groove 113 is circumferentially formed in one end of the outer pipe wall of the pipe joint 11 in advance, a prefabricated ring 12 is sleeved on the ring groove 113, and the prefabricated ring 12 is matched with the ring groove 113. The outer ring wall of the preformed ring 12 is provided with a pair of preformed grooves 121 along the axial direction, the pair of preformed grooves 121 correspond to the male lock catches 2 and the female lock catches 3 one by one, and the preformed grooves 121 are the same as the lock catch connecting grooves 111 in shape and size. The ring groove 113 is axially provided with a pair of positioning grooves 112 along the pipe joint 11, correspondingly, the inner ring wall of the prefabricated ring 12 is provided with a pair of positioning blocks 122, the pair of positioning blocks 122 is in one-to-one parallel clamping connection with the pair of positioning grooves 112, and when the prefabricated ring 12 is clamped with the positioning grooves 112, the prefabricated groove 121 is communicated with the lock catch connecting groove 111, so that the installation position of the prefabricated ring 12 is positioned, and the stability of the prefabricated ring 12 clamped with the pipe joint 11 is improved.
The pipe joint 11 is provided with a lock catch connecting groove 111 in advance, namely, the connecting positions of the male lock catch 2, the female lock catch 3 and the pipe joint 11 are mechanically positioned in advance, and the precast ring 12 is provided with a precast groove 121 in advance, namely, the connecting positions of the male lock catch 2, the female lock catch 3 and the precast ring 12 are mechanically positioned in advance. The problem that the male lock catch 2 and the female lock catch 3 cannot be connected with the lock catch connecting groove 111 due to installation errors on the prefabricated ring 12 is solved. The benchmark is preset at the machining stage of the machine tool, and compared with manual welding on a construction site, the precision is higher.
After the constructor clamps the male lock catch 2 and the female lock catch 3 into the corresponding prefabricated groove 121, the connecting ends of the male lock catch 2, the female lock catch 3 and the prefabricated ring 12 are continuously welded and reinforced, and the improvement of the installation accuracy of the male lock catch 2 and the female lock catch 3 is facilitated. The male lock catch 2 and the female lock catch 3 are pre-positioned and installed on the prefabricated ring 12, the prefabricated ring 12 is sleeved with the ring groove 113 until the positioning block 122 is completely clamped with the positioning groove 112, the male lock catch 2 and the female lock catch 3 are pushed into the corresponding lock catch connecting groove 111 along the corresponding lock catch connecting groove 111 until the synchronous clamping connection is carried out, the male lock catch 2 and the female lock catch 3 can be assembled on the pipe joint 11 synchronously and quickly by a constructor, and the alignment installation efficiency of the male lock catch 2 and the female lock catch 3 is improved. Hasp spread groove 111 is favorable to following 11 axial accurate guides of tube coupling, location public hasp 2 and female hasp 3, is convenient for further carry out reinforcement operations such as welding to public hasp 2, female hasp 3 and tube coupling 11, improves the installation accuracy of public hasp 2, female hasp 3 between adjacent support pipe 1 in the pipe curtain, reduces the interference problem that support pipe 1 top was advanced and is strutted.
In order to facilitate the stable and sealed connection of two axially adjacent pipe joints 11 of the support pipe 1, referring to fig. 4 and 5, one end of each pipe joint 11 is fixed with a butt-joint convex ring 115, the inner pipe wall at the other end is circumferentially provided with a butt-joint groove 116, and the butt-joint convex ring 115 and the butt-joint groove 116 are in sealing, inserting and matching. The outer wall of the front end of the prefabricated ring 12 on the next pipe joint 11 is preset to form a slope 114, and the end wall of the prefabricated ring 12 on the previous pipe joint 11 facing the next pipe joint 11 is also preset to form a slope 114.
When the adjacent pipe joints 11 are butted, one of the pipe joints 11 is in sealed splicing with the butt joint groove 116 of the other pipe joint 11 through the butt joint convex ring 115, so that the connection stability between the adjacent pipe joints 11 is favorably strengthened, and meanwhile, the butt joint convex ring 115 and the butt joint groove 116 in sealed joint improve the connection sealing performance of the adjacent pipe joints 11, so that the rapid sealing grouting in the whole support pipe 1 is favorably realized. Meanwhile, the pre-formed slope 114 between the prefabricated ring 12 and the end wall of the opposite pipe section 11 facilitates the constructor to quickly weld the two adjacent pipe sections 11 and form a weld opening 117, improves the welding strength of the adjacent pipe sections 11, and is beneficial to enhancing the structural stability of the integral supporting pipe 1.
In order to facilitate the quick locking of the male lock catch 2 and the female lock catch 3 and improve the water-stopping sealing performance after the male lock catch 2 and the female lock catch 3 are locked, referring to fig. 2 and 3, the male lock catch 2 is provided with a locking pipe I21, the locking pipe I21 extends along the axial direction of the pipe joint 11, and the length of each locking pipe I21 is the same as that of the pipe joint 11. The outer pipe wall of the locking pipe I21 is fixedly connected with a connecting plate 23, the extending length of the connecting plate 23 is the same as that of the locking pipe I21, one end, far away from the locking pipe, of the connecting plate 23 is fixedly connected with a pipe connecting block I22, and the pipe connecting block I22 is clamped with the corresponding locking connecting groove 111. The outer pipe wall of the locking pipe I21 is uniformly provided with a plurality of slurry through holes 211 along the axial direction and the circumferential direction.
The female lock catch 3 is provided with a second locking pipe 31, the second locking pipe 31 extends along the axial direction of the pipe joint 11, and the length of each second locking pipe 31 is the same as that of the pipe joint 11. The second pipe connecting block 32 is fixed on the outer pipe wall of the second locking pipe 31 facing the corresponding locking and connecting groove 111, and the second pipe connecting block 32 is clamped with the corresponding locking and connecting groove 111. The pipe wall of the second locking pipe 31 departing from the second pipe connecting block 32 is provided with a yielding groove 311 along the axial direction, and the yielding groove 311 penetrates through the two ends of the second locking pipe 31.
When two adjacent pipe sections 11 are axially connected, two adjacent locking connection pipes one 21 and two adjacent locking connection pipes two 31 are respectively communicated. When two adjacent supporting pipes 1 are sequentially pushed into the soil body, one end of each locking pipe I21 on the next supporting pipe 1 is guided into the locking pipe II 31 from one end of each locking pipe II 31 on the previous supporting pipe 1, and at the moment, the connecting plate 23 and the pipe joint block I22 extend out of the locking pipe II 31 from the abdicating groove 311, so that the locking pipe I21 can be pushed along the axial direction of the locking pipe II 31. The receding groove 311 provides a buffering opening for the dislocation error generated in the butt joint process of the first locking pipe 21 and the second locking pipe 31, and reduces the problem of interference between the connecting plate 23 and the second locking pipe 31. The first locking pipe 21 and the second locking pipe 31 are of self tubular structures, are easy to process and are convenient and rapid to butt, the first pipe connecting block 22 and the second pipe connecting block 32 are beneficial to rapidly positioning and connecting the first locking pipe 21 and the second locking pipe 31 with the corresponding locking connecting grooves 111 and welding and fixing the locking connecting grooves, and the stability of the first locking pipe 21 and the second locking pipe 31 for connecting the pipe joints 11 is improved.
Before the locking pipe I21 is pushed into the locking pipe II 31, a water-stopping lubricant is coated in the locking pipe II 31 in advance, so that the resistance for pushing the locking pipe I21 is reduced. After the locking pipe I21 is pushed into the locking pipe II 31, a constructor injects a water stopping lubricant into the end part of the locking pipe I21, the water stopping lubricant can adopt bentonite slurry, and the slurry through hole 211 facilitates the water stopping lubricant to be quickly dispersed and filled into the locking pipe II 31, so that the water stopping sealing performance and the structural connection stability after the locking pipe I21 and the locking pipe II 31 are locked and grouted can be favorably enhanced. After the adjacent pipe sections 11 are connected, the adjacent locking pipe I21 and the adjacent locking pipe II 31 are communicated to improve the grouting efficiency and the sealing effect, and meanwhile, the stability of the connecting structure of the adjacent locking pipe I21 and the adjacent locking pipe II 31 is further improved.
The implementation principle of the embodiment 1 is as follows: a constructor machines the prefabricated ring 12 and the prefabricated groove 121 thereof, the pipe joint 11 and the lock catch connecting groove 111, the ring groove 113, the butt joint groove 116 and the like in advance, clamps the locking pipe I21 and the locking pipe II 31 with the corresponding prefabricated groove 121 and welds and reinforces the prefabricated ring 12, then pushes the prefabricated ring 12 towards the ring groove 113, pushes the pipe joint block I22 and the pipe joint block II 32 into the corresponding lock catch connecting groove 111, and welds and reinforces the prefabricated ring 12, the pipe joint block I22, the pipe joint block II 11 and the connecting end of the pipe joint 11 after the prefabricated ring 12 is completely sleeved on the ring groove 113;
the method comprises the steps of sequentially butting a plurality of pipe sections 11 to assemble an integral supporting pipe 1, welding a slope surface 114 between every two adjacent pipe sections 11 to form a welded junction 117, coating a water-stopping lubricant in a locking pipe II 31 in advance, sequentially pushing the plurality of supporting pipes 1 into soil to enable the adjacent locking pipe I21 to be pushed along the locking pipe II 31, finally injecting the water-stopping lubricant into the end part of the locking pipe I21, sealing and filling the space between the locking pipe I21 and the locking pipe II 31, and finally completing the integral pipe curtain jacking into the soil and forming a supporting structure.
Example 2:
referring to fig. 6, the present embodiment is different from embodiment 1 in that four lock connecting grooves 111 are provided on the pipe joint 11, wherein two lock connecting grooves 111 and two other lock connecting grooves 111 are symmetrical with respect to the radial direction of the pipe joint 11.
Correspondingly, the number of the first locking pipes 21 is two, the number of the second locking pipes 31 is two, the two first locking pipes 21 on the same pipe joint 11 are sequentially distributed along the radial direction of the pipe joint 11, and the two second locking pipes 31 are sequentially distributed along the radial direction of the pipe joint 11.
When the two supporting tubes 1 are sequentially jacked into the soil body, the two supporting tubes 1 are synchronously butted and locked through the two locking connection tubes I21 and the two locking connection tubes II 31, and the connecting structure strength and the sealing water stopping performance of the two supporting tubes 1 are further enhanced.
The implementation principle of the embodiment 2 is as follows: when the radial dimension of the pipe joint 11 is increased, the number of the outer locking pipes one 21 and two locking pipes 31 can be correspondingly increased. Along with the size increase between two adjacent protective tubes 1, the clearance that dimensional error produced increases, and two locking pipe one 21 and two locking pipe two 31 form dual stagnant water sealing layer, and constructor injects stagnant water emollient in two locking pipe one 21, locking pipe two 31 in proper order, improves pipe curtain whole leakproofness.
The embodiment of the application also discloses a construction process for the base pipe curtain support of the underpass high-speed railway.
Referring to fig. 1 to 5, the construction process of the base pipe curtain support of the underpass high-speed railway comprises the following steps:
step one, hoisting a plurality of pipe joints 11, sequentially carrying out butt welding along the axial direction of the pipe joints 11 to form an integral supporting pipe 1, and repeating the step one to obtain the number of the required supporting pipes 1;
secondly, pushing the supporting pipe 1 into the soil layer by the jacking pipe;
step three, drilling holes in soil layers below the supporting pipes 1 at the top and performing grouting treatment to form grouting reinforcement layers 4 for supporting the supporting pipes 1 at the top, drilling holes in soil layers on the left side and the right side of the supporting pipes 1 at the side positions and performing grouting treatment to form grouting reinforcement layers 4 for supporting the sides of the supporting pipes 1 at the side positions;
and step four, filling concrete into the supporting pipe 1 to form a concrete filling layer 5, and enhancing the strength of the integral supporting structure of the pipe curtain.
Before the first step, a constructor machines the pipe joint 11 to form a ring groove 113, a lock catch connecting groove 111 and the like, machines the prefabricated ring 12 to form a prefabricated groove 121, pre-clamps the machined locking pipe I21 and locking pipe II 31 with the prefabricated ring 12 and the prefabricated groove 121 thereof, welds and reinforces the prefabricated ring 12, the locking pipe I21 and the locking pipe II 31, synchronously assembles the prefabricated ring 12, the locking pipe I21 and the locking pipe II 31 with the pipe joint 11, and sequentially welds and reinforces the connecting ends of the prefabricated ring 12, the locking pipe I21, the locking pipe II 31 and the pipe joint 11.
In the first step, a slope 114 is preprocessed between the pipe joints 11 and the pipe joints 11, and a weld crater 117 is formed through groove welding to strengthen the connecting structure strength of the pipe joints 11.
And injecting a water-stopping lubricant into the second locking connecting pipe 31 between the first step and the second step, wherein in the second step, each supporting pipe 1 is pushed to the right position, namely after the first locking connecting pipe 21 is pushed to the right position to correspond to the second locking connecting pipe 31, the water-stopping lubricant is injected from the end part of the first locking connecting pipe 21, so that the water-stopping lubricant is dispersed and filled between the first locking connecting pipe 21 and the second locking connecting pipe 31 until a plurality of water-stopping lubricating layers 6 are formed between the adjacent supporting pipes 1.
And before the second step, arranging a hydraulic static level gauge on the top surface of the roadbed along the railway track for monitoring. Meanwhile, the settlement sensors are sequentially arranged on the roadbed ground along the jacking direction of the supporting pipe 1, wherein one settlement sensor is arranged at an interval of 3 meters above the jacking position of the supporting pipe 1, one settlement sensor is arranged every 5 meters within a range of 40 meters to 50 meters away from two ends of the jacking position of the supporting pipe 1, and one settlement sensor is arranged every 8 meters within a range of 50 meters to 60 meters away from two ends of the jacking position of the supporting pipe 1.
In the second step, the vertical settlement error data of the settlement sensing is controlled within the range of +/-0.5 meter, and the jacking of the supporting pipe 1 is stopped and the jacking deviation of the supporting pipe 1 and other construction problems are checked when the vertical settlement error data exceeds +/-0.5 meter. And (5) continuing the step two after the deviation and other construction problems are eliminated, checking and monitoring the grouting effect and the reinforcing effect after jacking and grouting reinforcement of each supporting pipe 1 are completed, and completing the whole pipe curtain supporting construction.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a wear high-speed railway parent tube curtain supporting construction down which characterized in that: the support pipe comprises a support pipe (1), wherein the support pipe (1) comprises a plurality of pipe joints (11), and the pipe joints (11) are sequentially connected along the axis of the support pipe;
the outer pipe wall of the pipe joint (11) is provided with at least two lock catch connecting grooves (111) along the axial direction of the pipe joint;
the outer pipe wall of tube coupling (11) is provided with at least one public hasp (2) and at least one female hasp (3), public hasp (2) and female hasp (3) are all passed through hasp spread groove (111) are connected tube coupling (11), public hasp (2) and female hasp (3) cooperate, and adjacent two prop up protective tube (1) and pass through public hasp (2) and female hasp (3) are connected.
2. The underpass high-speed railway base pipe curtain supporting structure of claim 1, wherein: a prefabricated ring (12) is sleeved at one end of the outer pipe wall of the pipe joint (11), the male lock catch (2) and the female lock catch (3) are fixedly connected with the prefabricated ring (12), and a positioning groove (112) for clamping the prefabricated ring (12) is formed in the outer pipe wall of the pipe joint (11) along the axial direction of the pipe joint;
prefabricated ring (12) joint during constant head tank (112), public hasp (2) and female hasp (3) joint correspond hasp spread groove (111).
3. The underpass high-speed railway base pipe curtain supporting structure of claim 2, wherein: the prefabricating ring (12) is provided with a prefabricating groove (121) for clamping the male lock catch (2) and the female lock catch (3);
when the prefabricated ring (12) is clamped with the positioning groove (112), the prefabricated groove (121) is communicated with the lock catch connecting groove (111).
4. The underpass high-speed railway base pipe curtain supporting structure of claim 2, wherein: when two adjacent pipe joints (11) are connected, a slope surface (114) is formed between the end wall of the prefabricated ring (12) of one pipe joint (11) and the end wall of the other pipe joint (11).
5. The underpass high-speed railway base pipe curtain supporting structure of claim 1, wherein: one end of the pipe joint (11) is fixed with a butt joint convex ring (115), and the other end is provided with a butt joint groove (116) for the butt joint convex ring (115) to be in sealed splicing.
6. The underpass high-speed railway base pipe curtain supporting structure of claim 1, wherein: the male lock catch (2) is arranged to be a locking pipe I (21), the locking pipe I (21) extends along the axial direction of the pipe joint (11), and the locking pipe I (21) is fixedly connected with a pipe joint block I (22) used for clamping the locking connecting groove (111);
the female lock catch (3) is arranged as a second lock connecting pipe (31), and a second pipe connecting block (32) used for clamping the lock connecting groove (111) is fixed on the second lock connecting pipe (31);
the wall of locking pipe two (31) has seted up abdicating groove (311) along self axial, locking pipe one (21) by the one end of locking pipe two (31) is leading-in locking pipe two (31), just the pipe connection piece one (22) by abdicating groove (311) and stretching out locking pipe two (31).
7. The underpass high-speed railway base pipe curtain supporting structure of claim 6, wherein: the pipe wall of the locking pipe I (21) is provided with a plurality of slurry permeating holes (211), and the plurality of slurry permeating holes (211) are distributed along the axial direction and the circumferential direction of the pipe wall of the locking pipe I (21).
8. The underpass high-speed railway base pipe curtain support structure of claim 7, wherein: when two adjacent pipe joints (11) are axially connected, the two adjacent locking connection pipes I (21) and the two adjacent locking connection pipes II (31) are respectively communicated.
9. The utility model provides a wear high-speed railway parent tube curtain support construction technology down which characterized in that: the method comprises the following steps:
step one, hoisting a plurality of pipe joints (11), sequentially carrying out butt welding along the axial direction of the pipe joints (11) to form an integral supporting pipe (1), and repeating the step one to obtain the number of the required supporting pipes (1);
secondly, the jacking pipe pushes the supporting pipe (1) into the soil layer;
step three, drilling holes in the soil layer below the supporting pipe (1) at the top position and performing grouting treatment to form a support for the supporting pipe (1) at the top, and drilling holes in the soil layers on the left side and the right side of the supporting pipe (1) at the side position and performing grouting treatment to form a support for the side surface of the supporting pipe (1) at the side position;
and step four, filling concrete into the supporting pipe (1).
10. The base pipe curtain support construction process of the underpass high-speed railway according to claim 9, wherein: and injecting a water-stopping lubricant into the male lock catch (2) and the female lock catch (3) between the first step and the second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585601.XA CN114412473A (en) | 2021-12-23 | 2021-12-23 | Underpass high-speed railway base pipe curtain supporting structure and construction process thereof |
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| CN202111585601.XA CN114412473A (en) | 2021-12-23 | 2021-12-23 | Underpass high-speed railway base pipe curtain supporting structure and construction process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775639A (en) * | 2022-05-24 | 2022-07-22 | 陕西华山路桥集团有限公司 | Pipe joint component suitable for transversely bearing pipe curtain structure |
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2021
- 2021-12-23 CN CN202111585601.XA patent/CN114412473A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775639A (en) * | 2022-05-24 | 2022-07-22 | 陕西华山路桥集团有限公司 | Pipe joint component suitable for transversely bearing pipe curtain structure |
| CN114775639B (en) * | 2022-05-24 | 2024-03-05 | 陕西华山路桥集团有限公司 | Pipe joint component suitable for transverse bearing pipe curtain structure |
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