CN1991130A - Construction method of fast-assembling road tunnel - Google Patents
Construction method of fast-assembling road tunnel Download PDFInfo
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- CN1991130A CN1991130A CN 200510135596 CN200510135596A CN1991130A CN 1991130 A CN1991130 A CN 1991130A CN 200510135596 CN200510135596 CN 200510135596 CN 200510135596 A CN200510135596 A CN 200510135596A CN 1991130 A CN1991130 A CN 1991130A
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Abstract
The invention relates to a construction method for quick-assembly highway tunnel. The projection construction of reinforced concrete in tunnel is transferred out of hole and is prefabricated into component. By transporting and hanging special tool flow operation proceeds. Transporting and hanging, assembling, grouting and backfilling are finished in one time. When it is in the segment where landslide happens easily prefabricated component is installed in time, grouting and backfilling are finished in time; when it is in the segment where the stone is hard at front digging is carried out and prefabricated component is transported and hanged at the back. There is need to measure and control the central line of tunnel, sideline and elevation and no need to prospect for datum. The invest cost in the method of invention can be saved by more than 1/3. it is provided with short working period, high efficiency, good safety, simple operation, no construction again, simple program and so on.
Description
Technical field
The invention belongs to tunnel construction and construction method thereof in the highway construction.
Background technology
China's existing highway tunnel construction generally will experience following process:
One, tunneling construction experienced for three stages: 1, cloth eye perforating, 2, the filling explosives and detonators blows out, 3, the stone of mucking haulage outward.
Two, trouble free service experience three is closed: 1, ventilation smoke exhaust closes, and 2, passs that remove the dangerous condition, 3, set up safety row grid pass.
Three, reinforced concrete construction is through four procedures: 1, molding dress mould, 2, system wire-ties, 3, placing of concrete, 4, maintenance backfill form removal.
Four, water power wind construction accomplishes that three are guaranteed: guarantee that 1, water power wind line alignment is rationally neat, convenient and safe in the hole in, and 2, guarantee that water supply, power supply, ventilation apparatus are in place by the standard fixed point, 3, guarantee the round-the-clock normal operation of water power wind, stop the accident generation.
Five, in-site measurement work will perform three point control: 1, control and hold the accuracy of survey data, 2, control tunnel center line, sideline, height and absolute altitude well, 3, control the close fit degree of footman operating personnel and each work post well.
What time be traditional job practices of comprehensive tunnel construction and technological process below, wherein have a lot of deficiencies, for example: investment is big, the cost height, and inefficiency, long in time limit, dangerous big, safety factor is poor, and the wasting of resources is many, and investment repayment is slow.Along with the development of form, we must widen the vision, reform and innovation.
Summary of the invention
The present invention will solve the problem that exists in the above-mentioned prior art, and a kind of small investment is provided, and the duration is short, and the safety factor height is saved material, the job practices of the fast-assembling road tunnel that cuts the waste.
Technical scheme of the present invention is as follows:
The equal prefabricated units outside the hole of reinforced concrete construction in the tunnel adopt fortune to hang special tool and carry out continuous productive process, and fortune is hung, installation, the cementation of fissures, backfill is disposable finishes; Run into easy landslide location the backfill of the prefabricated units cementation of fissures in time is installed, run into the solid location of stone matter, the front tunneling construction, back fortune is hung the installation prefabricated units; Only need to measure control tunnel center line, sideline and absolute altitude do not need exploration data.
The job practices of novel tunnel still adopts the conventional construction machinery of engineering, and its construction sequence is:
1, presses the designing requirement of precast member for reinforcing bar concrete, smooth prefabricated place, by size, arc length, high-volume good member topotype full-page proof, the C30 concrete pouring of topotype full-page proof, smooth surface is smooth, seal with 20 centimeters punching block all around, topotype surface and punching block meat side are coated lubrication oil or are covered plastic sheeting.
2, reinforcement fabrication, with 10 every square of φ 14 screw-thread steels, layer cloth muscle, each 5 up and down, 20 centimeters * 20 centimeters at every interval, reserve 3 centimeters spaces around the punching block, dome portions concavo-convex interface in limit is respectively reserved 5 centimeters, and concave surface limit arch napex levels reinforcing bar stretches out, notch depth is 5 centimeters, convex surface limit dome portions double steel bar is all curved to member plate central authorities 45 degree, concavo-convex butt joint, and size is suitable.The steel plate connecting elements reinforcing bar that the concavo-convex joint weldering of vault lastblock is 1 meter long 20 centimeters wide, it is standby to do lamp bracket, each pre-buried one at 1-1.5 rice, the buckplate back side
φ 10 reinforcing bars of shape are also done the lifting appliance with member muscle welding.
3, pouring concrete construction after the reinforcing bar aperture plate is rolled, is transported to that the topotype place installs and by the qualified back cast C30 concrete of inspecting for acceptance, avoids trachoma, spillage, the hair side levelling.
4, concrete curing, the reinforced concrete member casting complete and treat concrete airing top layer after, cover water seasoning form removal after continuous 14 days with straw or sand.
5, handling is installed, adopt cucurbit dragline lifting way, prefabricated units are loaded onto vehicle frame, to the hole, the location is installed with the battery truck roping, earlier the concave edge member is lifted by crane suitable height with dragline, use the steel pole mobile member accurately in place again, it is in place with the chimb member to use the same method again, carry out the both sides member simultaneously all with dragline adjustment height, concavo-convex butt joint is integrated.Hang installation from prefabricated units to fortune and all will note " male and female pairing ".
6, after the several piece member was installed in cementation of fissures backfill, handling, it was floating to adopt high-mark cement, mortar to carry out the about cementation of fissures of member, and the outside adds waterproofing materials in addition and covers, and then casts to have unified with stone and 50-70# cement, mortar and fills up head room clearance from bottom to up.
Major advantage of the present invention is:
1, method of the present invention mainly is prefabricated units outside the hole, and fortune is hung, installation, the cementation of fissures, backfill is disposable finishes, and investment cost is saved more than 1/3.
2, the most of work post of method of the present invention operation the hole outside, management puts in place, and the minimizing accident can the work holdup, is not restricted, and the duration lacks, and can save the duration more than 1/3, the efficient height, safety is good.
3, method of the present invention is easy and simple to handle, does not do and repeats construction, and program is simple, and the division of labor is clear and definite, interference effect not mutually, and continuous productive process, flexible.
Description of drawings
Fig. 1 always schemes for the prefabricated tunnel of the present invention
Fig. 2 is the prefabricated vault plate of a present invention connection layout
Fig. 3 is the prefabricated vault hook of a present invention schematic diagram
Fig. 4 is the prefabricated arch arrangement of reinforcement of the present invention
Fig. 5 is the half of figure in the prefabricated tunnel of the present invention
The specific embodiment
See shown in the figure, middle in the highway tunnel arch, 5.5 meters of clear height, clear span is 10 meters in the arch, 3.5 meters arch cambers of inner edge, every meter 5% at interior arch dam, thick 20 centimeters of all arch bars, arch bar always is about 9 meters, the wide 1-1.5 rice of plate, φ 14 double-deck muscle, muscle is suitable apart from 30 centimeters both sides, and horizontal bar is apart from 30 centimeters, 30 centimeters in both sides draining circle ditch, the thick 28-30 centimetre in road surface in the arch, φ 14 single reinforcements are apart from 30 * 30, overhead 5 centimeters, ground is 1% in the slope in length and breadth in the arch.
Its construction sequence is:
1, presses the designing requirement of precast member for reinforcing bar concrete, smooth prefabricated place, by size, arc length, high-volume good member topotype full-page proof, the C30 concrete pouring of topotype full-page proof, smooth surface is smooth, seal with 20 centimeters punching block all around, topotype surface and punching block inboard are coated lubrication oil or are covered plastic sheeting.
2, reinforcement fabrication, with 10 every square of φ 14 screw-thread steels, layer cloth muscle, each 5 up and down, 20 centimeters * 20 centimeters at every interval, reserve 3 centimeters spaces around the punching block, dome portions concavo-convex interface in limit is respectively reserved 5 centimeters, and concave surface limit dome portions levels reinforcing bar stretches out, notch depth is 5 centimeters, convex surface limit dome portions double steel bar is all curved to member plate central authorities 45 degree, concavo-convex butt joint, and size is suitable.The steel plate connecting elements reinforcing bar that the concavo-convex joint weldering of vault lastblock is 1 meter long 20 centimeters wide, it is standby to do lamp bracket, each pre-buried one at 1-1.5 rice, the buckplate back side
φ 10 reinforcing bars of shape are also done the lifting appliance with member muscle welding.
3, pouring concrete construction after the reinforcing bar aperture plate is rolled, is transported to that the topotype place installs and by the qualified back cast C30 concrete of inspecting for acceptance, avoids trachoma, spillage, the hair side levelling.
4, concrete curing, the reinforced concrete member casting complete and treat concrete airing top layer after, cover water seasoning form removal after continuous 14 days with straw or sand.
5, handling is installed, adopt cucurbit dragline lifting way, prefabricated units are loaded onto vehicle frame, to the hole, the location is installed with the battery truck roping, earlier the concave edge member is lifted by crane suitable height with dragline, use the steel pole mobile member accurately in place again, it is in place with the chimb member to use the same method again, carry out the both sides member simultaneously all with dragline adjustment height, concavo-convex butt joint is integrated.Hang installation from prefabricated units to fortune and all will note " male and female pairing ".
6, after the several piece member was installed in cementation of fissures backfill, handling, it was floating to adopt high-mark cement, mortar to carry out the about cementation of fissures of member, and the outside adds waterproofing materials in addition and covers, and then casts to have unified with stone and 50-70# cement, mortar and fills up head room clearance from bottom to up.
Claims (1)
1, the job practices of fast-assembling road tunnel, its key step is as follows:
(1) presses the designing requirement of precast member for reinforcing bar concrete, smooth prefabricated place, by size, arc length, high-volume good member topotype full-page proof, the C30 concrete pouring of topotype full-page proof, smooth surface is smooth, seal with 20 centimeters punching block all around, topotype surface and punching block inboard are coated lubrication oil or are covered plastic sheeting;
(2) reinforcement fabrication, with 10 every square of φ 14 screw-thread steels, layer cloth muscle, each 5 up and down, 20 centimeters * 20 centimeters at every interval, reserve 3 centimeters spaces around the punching block, dome portions concavo-convex interface in limit is respectively reserved 5 centimeters, and concave surface limit dome portions levels reinforcing bar stretches out, notch depth is 5 centimeters, convex surface limit dome portions double steel bar is all curved to member plate central authorities 45 degree, concavo-convex butt joint, and size is suitable.The steel plate connecting elements reinforcing bar that the concavo-convex joint weldering of vault lastblock is 1 meter long 20 centimeters wide, it is standby to do lamp bracket, each pre-buried one at 1-1.5 rice, the buckplate back side
φ 10 reinforcing bars of shape are also done the lifting appliance with member muscle welding;
(3) pouring concrete construction after the reinforcing bar aperture plate is rolled, is transported to that the topotype place installs and by the qualified back cast C30 concrete of inspecting for acceptance, avoids trachoma, spillage, the hair side levelling;
(4) concrete curing, the reinforced concrete member casting complete and treat concrete airing top layer after, cover water seasoning form removal after continuous 14 days with straw or sand;
(5) handling is installed, adopt cucurbit dragline lifting way, prefabricated units are loaded onto vehicle frame, to the hole, the location is installed with the battery truck roping, earlier the concave edge member is lifted by crane suitable height with dragline, use the steel pole mobile member accurately in place again, it is in place with the chimb member to use the same method again, carry out the both sides member simultaneously all with dragline adjustment height, concavo-convex butt joint is integrated.Hang installation from prefabricated units to fortune and all will note " male and female pairing ";
(6) after the several piece member was installed in cementation of fissures backfill, handling, it was floating to adopt high-mark cement, mortar to carry out the about cementation of fissures of member, and the outside adds waterproofing materials in addition and covers, and then casts to have unified with stone and 50-70# cement, mortar and fills up head room clearance from bottom to up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135596 CN1991130A (en) | 2005-12-30 | 2005-12-30 | Construction method of fast-assembling road tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135596 CN1991130A (en) | 2005-12-30 | 2005-12-30 | Construction method of fast-assembling road tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN1991130A true CN1991130A (en) | 2007-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510135596 Pending CN1991130A (en) | 2005-12-30 | 2005-12-30 | Construction method of fast-assembling road tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952459A (en) * | 2016-05-04 | 2016-09-21 | 中铁二十四局集团浙江工程有限公司 | Splicing-type primary support method for tunnel |
| CN110195598A (en) * | 2019-06-14 | 2019-09-03 | 浙江交工路桥建设有限公司 | A kind of highway tunnel construction integrated control method |
-
2005
- 2005-12-30 CN CN 200510135596 patent/CN1991130A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952459A (en) * | 2016-05-04 | 2016-09-21 | 中铁二十四局集团浙江工程有限公司 | Splicing-type primary support method for tunnel |
| CN110195598A (en) * | 2019-06-14 | 2019-09-03 | 浙江交工路桥建设有限公司 | A kind of highway tunnel construction integrated control method |
| CN110195598B (en) * | 2019-06-14 | 2021-04-02 | 浙江交工路桥建设有限公司 | Integrated control method for highway tunnel construction |
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