CN104695983B - Method for welding embedded steel bar welding joints of two end nodes in initial supporting arch - Google Patents
Method for welding embedded steel bar welding joints of two end nodes in initial supporting arch Download PDFInfo
- Publication number
- CN104695983B CN104695983B CN201310666142.7A CN201310666142A CN104695983B CN 104695983 B CN104695983 B CN 104695983B CN 201310666142 A CN201310666142 A CN 201310666142A CN 104695983 B CN104695983 B CN 104695983B
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- China
- Prior art keywords
- bar
- steel bar
- welding
- pilot tunnel
- embedded
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
Abstract
The invention discloses a method for welding embedded steel bar welding joints of two end nodes in an initial supporting arch. The method comprises the following steps: when a side pilot tunnel grille is mounted, steel bar embedding position and direction are determined first, four soil holes are punched in an outer side soil layer in the steel bar embedding direction, the embedded steel bars are inserted, the directions of the steel bars are adjusted, and then crossing points of the embedded steel bars and a main steel bar of the pilot tunnel grille are welded firmly; when a middle pilot tunnel grille is mounted, the steel bar embedding position and direction on the pilot tunnel grille are determined, four soil holes are punched in the outer side soil layer in the steel bar embedding direction, a U-shaped steel bar and the main steel bar of the pilot tunnel grille are welded firmly. Through the adoption of the method for directly embedding steel bar welding joints, the construction cost is reduced, the node connecting quality is ensured, and the node construction becomes simple and rapid.
Description
Technical field:
The invention belongs to a kind of construction techniques, connect particularly at the beginning of one kind button arch two end node embedded bars
The welding method of head.
Background technology
Encircle in construction at the beginning of the pba engineering method of current subway station button, the method adopting pre-embedded steel slab (+u-shaped muscle) more, i.e. side
Arch adopts u-shaped muscle+pre-embedded steel slab, the method that hogging adopts pre-embedded steel slab, (as shown in Figure 1, 2).Steel needed for this kind of method construction
Material amount is larger, and when the irrational situation in position after steel plate position fixation, is difficult to steel plate position be carried out again
Adjustment, leads to reinforcing bar not enough with steel plate weld length, welding quality does not reach design requirement.If reinforcement measure is carried out to node,
Node Joining Technology can be led to again loaded down with trivial details, increase difficulty of construction and reduce speed of application.
Content of the invention:
The purpose of the present invention is that and overcomes above-mentioned the deficiencies in the prior art, and provides a button arch two ends at the beginning of one kind
The welding method of node embedded bar welding point, the method that the method adopts direct embedded bar welding point, not only reduces
Construction cost, ensure that node quality of connection, also make the node construction become simple and quick.
As above conceive, the technical scheme is that a kind of weldering of a just button arch two end node embedded bar welding point
Connect method it is characterised in that: when side pilot tunnel grid is installed, first the position of embedded bar and direction are determined, in outside soil
Layer sets four native holes along the pre-buried direction of reinforcing bar, then embedded bar is inserted, after adjusting reinforcing bar direction, by embedded bar with lead
Hole grid cage bar point of intersection firm welding；When middle drift grid is installed, the pre-buried position of reinforcing bar and direction are determined on pilot tunnel grid
Afterwards, four native holes are set in outside soil layer along the pre-buried direction of reinforcing bar, by u-shaped reinforcing bar and pilot tunnel grid cage bar firm welding.
Above-mentioned embedded bar protruded length exceedes 10-12 times of cage bar diameter.
The method that the present invention adopts direct embedded bar welding point, does not meet design requirement the pre-buried position of reinforcing bar
Situation when, using instrument, reinforcement location can be adjusted, meet design requirement, and ensure that weld length, effectively solve
Certainly the asking of " position is occurred using pre-embedded steel slab do not conform to be difficult to during design requirement adjust steel plate position and increased difficulty of construction "
Topic.Meanwhile, saved great deal of steel, reduce construction cost, simple to operate, quick, improve labor productivity it is ensured that section
Point quality of connection.
Brief description:
Fig. 1 is that two end node connection figures are encircleed on side；
Fig. 2 is hogging two end node connection figure；
Fig. 3 is that two end node embedded bar welding point figures are encircleed on side；
Fig. 4 is hogging two end node pre-buried u-shaped reinforcement welding joint figure.
1st, pilot tunnel grid cage bar；2nd, steel plate；3rd, u-shaped muscle；4th, weld；5th, button arch grid cage bar；6th, embedded bar connects
Head.
Specific embodiment:
As shown in Figure 3,4: a kind of welding method of a just button arch two end node embedded bar welding point, side pilot tunnel grid
During installation, first the position of embedded bar and direction are determined, set four native holes in outside soil layer along the pre-buried direction of reinforcing bar, then
Embedded bar is inserted, after adjusting reinforcing bar direction, by Fig. 3 by embedded bar and pilot tunnel grid cage bar point of intersection firm welding,
And ensure that reinforcing steel bars exposed length exceedes 10 times of cage bar diameter；When middle drift grid is installed, steel bar preassembling is determined on pilot tunnel grid
After burying position and direction, set four native holes in outside soil layer along the pre-buried direction of reinforcing bar, by Fig. 4 by u-shaped reinforcing bar and pilot tunnel grid
Cage bar firm welding, and ensure that exposed steel bar length exceedes 10 times of cage bar diameter.
The present invention applies at the beginning of the pba engineering method of subway station button arch construction, by the way of embedded bar welding point,
Reduce difficulty of construction, simple to operate.
Claims (2)
1. a kind of welding method of a just button arch two end node embedded bar welding point it is characterised in that: side pilot tunnel grid peace
During dress, first the position of embedded bar and direction are determined, set four native holes in outside soil layer along the pre-buried direction of reinforcing bar, then will
Embedded bar inserts, after adjusting reinforcing bar direction, by embedded bar and pilot tunnel grid cage bar point of intersection firm welding；Middle drift lattice
When grid are installed, after pilot tunnel grid determines the pre-buried position of reinforcing bar and direction, set four in outside soil layer along the pre-buried direction of reinforcing bar
Individual soil hole, by u-shaped reinforcing bar and pilot tunnel grid cage bar firm welding.
2. the welding method of a just button arch two end node embedded bar welding point according to claim 1, its feature exists
In: above-mentioned embedded bar protruded length exceedes 10-12 times of cage bar diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666142.7A CN104695983B (en) | 2013-12-09 | 2013-12-09 | Method for welding embedded steel bar welding joints of two end nodes in initial supporting arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666142.7A CN104695983B (en) | 2013-12-09 | 2013-12-09 | Method for welding embedded steel bar welding joints of two end nodes in initial supporting arch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104695983A CN104695983A (en) | 2015-06-10 |
| CN104695983B true CN104695983B (en) | 2017-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310666142.7A Active CN104695983B (en) | 2013-12-09 | 2013-12-09 | Method for welding embedded steel bar welding joints of two end nodes in initial supporting arch |
Country Status (1)
| Country | Link |
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| CN (1) | CN104695983B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483133A (en) * | 2020-11-26 | 2021-03-12 | 北京市政路桥股份有限公司 | Steel bar grating connecting structure for primary support structure of arch-connected underground excavated pipe gallery and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884722A (en) * | 2006-06-12 | 2006-12-27 | 中铁隧道勘测设计院有限公司 | Grille type connection method of rigid joint for underground continuous wall |
| CN101187210A (en) * | 2007-10-17 | 2008-05-28 | 中铁十八局集团有限公司 | Metro engineering pile foundation underpinning construction method |
| CN101225742A (en) * | 2007-10-17 | 2008-07-23 | 中铁十八局集团有限公司 | Construction method of shallow buried underground excavating tunnel super large section using PBA method |
| CN102518454A (en) * | 2011-12-22 | 2012-06-27 | 中铁工程设计咨询集团有限公司 | Grating device for underground excavation engineering and manufacture method |
| CN202467864U (en) * | 2012-01-20 | 2012-10-03 | 华铁工程咨询有限责任公司 | Fastening arch initial supporting steel frame connection for excavated metro station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3207151B2 (en) * | 1998-02-18 | 2001-09-10 | 株式会社巴コーポレーション | Steel panel joint structure |
-
2013
- 2013-12-09 CN CN201310666142.7A patent/CN104695983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884722A (en) * | 2006-06-12 | 2006-12-27 | 中铁隧道勘测设计院有限公司 | Grille type connection method of rigid joint for underground continuous wall |
| CN101187210A (en) * | 2007-10-17 | 2008-05-28 | 中铁十八局集团有限公司 | Metro engineering pile foundation underpinning construction method |
| CN101225742A (en) * | 2007-10-17 | 2008-07-23 | 中铁十八局集团有限公司 | Construction method of shallow buried underground excavating tunnel super large section using PBA method |
| CN102518454A (en) * | 2011-12-22 | 2012-06-27 | 中铁工程设计咨询集团有限公司 | Grating device for underground excavation engineering and manufacture method |
| CN202467864U (en) * | 2012-01-20 | 2012-10-03 | 华铁工程咨询有限责任公司 | Fastening arch initial supporting steel frame connection for excavated metro station |
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| CN104695983A (en) | 2015-06-10 |
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