CN207609429U - A kind of prestressing force false stull - Google Patents
A kind of prestressing force false stull Download PDFInfo
- Publication number
- CN207609429U CN207609429U CN201721722429.7U CN201721722429U CN207609429U CN 207609429 U CN207609429 U CN 207609429U CN 201721722429 U CN201721722429 U CN 201721722429U CN 207609429 U CN207609429 U CN 207609429U
- Authority
- CN
- China
- Prior art keywords
- cross bar
- screw rod
- prestressing force
- false stull
- utility
- 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.)
- Expired - Fee Related
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model is related to Tunnel construction fields, specially a kind of prestressing force false stull, including cross bar and the regulating part at cross bar both ends is set, the regulating part includes screw rod and support element, one end of screw rod is connect by screw thread with cross bar, the other end rotation connection of support element and screw rod；The screw rod is equipped with adjustment hole, and the rotation of screw rod may be implemented by adjustment hole.The utility model prestressing force false stull, false stull length is adjusted by adjusting the length of moving screw and the prestressing force with pressure from surrounding rock negative direction is applied to Tunnel system, it efficiently solves the numerous drawbacks of traditional false stull and prestressing force is applied with to Tunnel system, it is suppressed that the generation of preliminary bracing structural cracks.
Description
Technical field
The utility model is related to Tunnel construction field, specially a kind of prestressing force false stull.
Background technology
In the big cross sections Support System in Soft Rock Tunnels engineering construction such as high-speed railway, highway, tunnel excavation section is usually larger, when
When encountering compared with breaking surrounding rock, since inverted arch cannot close cyclization in time, interim cross is often added using benching tunnelling method for the sake of security
Support（Interim inverted arch）And coordinate bolt-mesh-spurting supporting, so that preliminary bracing system is in closed state in short term.Traditional false stull is adopted
It is bolted with connecting plate and arch arch springing, length is fixed, when arch wall arch construction is there are when slight errors, when installing false stull
The problems such as often false stull cannot effectively coincide with the arch that has stood, bolt hole is correspondings upper, often there are gaps between section arch
Prevent false stull is from effectively inhibiting preliminary bracing system horizontal convergence and often horizontal convergence reaches a certain level when tunnel
When false stull just work, cause preliminary bracing concrete cracking.
Utility model content
In view of the above technical problems, the utility model provides a kind of prestressing force false stull, the stull length tune
Section can apply Tunnel system the prestressing force with pressure from surrounding rock negative direction, it is suppressed that preliminary bracing structural cracks
Generation.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of prestressing force false stull, including cross bar and the regulating part at cross bar both ends is set, the regulating part includes spiral shell
One end of bar and support element, screw rod is connect by screw thread with cross bar, the other end rotation connection of support element and screw rod；The screw rod
It is equipped with adjustment hole, the rotation of screw rod may be implemented by adjustment hole.
Preferably, the cross bar includes cross bar one and cross bar two, cross bar one is connect by bolt with cross bar two.
Preferably, the cross bar is made of two channel steel being oppositely arranged connections, the both ends of cross bar, which are equipped with, to be threaded
The connecting plate in hole is connect by connecting plate with screw rod.
The utility model compared with prior art, has an advantageous effect in that：
The utility model prestressing force false stull adjusts false stull length by adjusting the length of moving screw
And the prestressing force with pressure from surrounding rock negative direction is applied to Tunnel system, efficiently solve the numerous disadvantages of traditional false stull
It holds and prestressing force is applied with to Tunnel system, it is suppressed that the generation of preliminary bracing structural cracks.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the utility model use state diagram；
Fig. 3 is the structural schematic diagram of the utility model support element；
Fig. 4 is the utility model bolt arrangement schematic diagram；
Fig. 5 is the utility model channel steel structural schematic diagram；
Wherein：1 is cross bar, and 2 be screw rod, and 3 be support element, and 4 be adjustment hole, and 5 be cross bar one, and 6 be cross bar two, and 7 be channel steel,
8 be connecting plate, and 9 be bolt, and 10 be regulating part.
Specific implementation mode
The technical scheme in the utility model embodiment is clearly and completely described below, it is clear that described reality
It is only the utility model a part of the embodiment to apply example, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this reality
With novel protected range.
As shown in Figures 1 to 3, a kind of prestressing force false stull, including cross bar 1 and the regulating part 10 at 1 both ends of cross bar is set,
Regulating part 10 includes screw rod 2 and support element 3, and one end of screw rod 2 is connect by screw thread with cross bar 1, and support element 3 is another with screw rod 2
One end is rotatablely connected；Screw rod 2 is equipped with adjustment hole 4, and the rotation of screw rod 2 may be implemented by adjustment hole 4.3 middle part of support element is set
There are through-hole, screw rod 2 to be connect with support element 3 across the through-hole, the internal diameter of the through-hole is more than the major diameter of thread of screw rod 2, i.e., will not shadow
Ring the rotation between support element 3 and screw rod 2.Certainly the rotation connection of screw rod 2 and support element 3 can be also realized by other structures.
It is using step, the first step：The injection of preliminary bracing arch fixture position can be coagulated soil to clean out；Second step：It will
Prestressing force false stull Assembling；Third walks：Reinforcing bar is inserted into adjustment hole 4, support is made by 2 collapsing length of rotary screw
Part 3 supports on arch flange plate, is further continued for rotary screw 2 and applies prestressing force to preliminary bracing system.
As shown in Fig. 3,5, cross bar 1 by can the connection of two channel steels 7 form, according to Design of Tunnel parameter to slot
Two channel steels 7 are symmetrically welded by 7 blanking of steel, are formed closed rectangular（Inside is hollow for screw rod movement）, and weld seam is added
Strength is welded.It is welded to connect plate 8 at 1 both ends of cross bar that channel steel 7 is formed, connecting plate 8 is equipped with threaded hole, passes through the threaded hole and spiral shell
Bar 2 connects.Certainly the component that hole can be also just threaded with other replaces connecting plate 8, such as nut；No matter which kind of structure is used
As long as the threaded connection of screw rod 2 and cross bar 1 may be implemented.
As shown in figure 4, cross bar 1 includes cross bar 1 and cross bar 26, i.e., when needing 1 length of cross bar processed longer or
Other situations, by 1 segmental machining of cross bar, one end of cross bar 1 and cross bar 26 is respectively equipped with regulating part 10, cross bar 1 it is another
End is connect by bolt 9 with the other end of cross bar 26.Certainly, cross bar 1 and cross bar 26 also can be used the modes such as welding and carry out
It is connected and fixed.Cross bar 1 and cross bar 26 are alternatively two and are oppositely arranged the connection composition of channel steel 7.
Only the preferred embodiment of the utility model is explained in detail above, but the utility model be not limited to it is above-mentioned
Embodiment can also not depart from the utility model aims within the knowledge of a person skilled in the art
Under the premise of various changes can be made, various change should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of prestressing force false stull, it is characterised in that：Including cross bar（1）With setting in cross bar（1）The regulating part at both ends
（10）, the regulating part（10）Including screw rod（2）And support element（3）, screw rod（2）One end pass through screw thread and cross bar（1）Connection,
Support element（3）With screw rod（2）The other end rotation connection；The screw rod（2）It is equipped with adjustment hole（4）, pass through adjustment hole（4）It can
To realize screw rod（2）Rotation.
2. a kind of prestressing force false stull according to claim 1, it is characterised in that：The cross bar（1）Including cross bar one
（5）With cross bar two（6）, cross bar one（5）Pass through bolt（9）With cross bar two（6）Connection.
3. a kind of prestressing force false stull according to claim 1, it is characterised in that：The cross bar（1）It is opposite by two
The channel steel of setting（7）Connection composition, cross bar（1）Both ends be equipped with and be threaded the connecting plate in hole（8）, pass through connecting plate（8）With
Screw rod（2）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722429.7U CN207609429U (en) | 2017-12-12 | 2017-12-12 | A kind of prestressing force false stull |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722429.7U CN207609429U (en) | 2017-12-12 | 2017-12-12 | A kind of prestressing force false stull |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207609429U true CN207609429U (en) | 2018-07-13 |
Family
ID=62798233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721722429.7U Expired - Fee Related CN207609429U (en) | 2017-12-12 | 2017-12-12 | A kind of prestressing force false stull |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207609429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630296A (en) * | 2019-09-27 | 2019-12-31 | 中铁四局集团有限公司 | Recyclable length-adjustable tunnel temporary cross brace and using method |
| CN113338300A (en) * | 2021-06-22 | 2021-09-03 | 石家庄铁道大学 | Combined type cross brace structure for foundation pit support |
-
2017
- 2017-12-12 CN CN201721722429.7U patent/CN207609429U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630296A (en) * | 2019-09-27 | 2019-12-31 | 中铁四局集团有限公司 | Recyclable length-adjustable tunnel temporary cross brace and using method |
| CN113338300A (en) * | 2021-06-22 | 2021-09-03 | 石家庄铁道大学 | Combined type cross brace structure for foundation pit support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |