CN102182150B - Installation method of externally hung steel template for anti-collision guardrail construction outside viaduct - Google Patents
Installation method of externally hung steel template for anti-collision guardrail construction outside viaduct Download PDFInfo
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Abstract
The invention discloses an installation method of an externally hung steel template for anti-collision guardrail construction outside a viaduct, and belongs to viaduct construction. The method is characterized in that: embedded steel bars paved on the pavement of the viaduct can be used as pull support points of adjustable inclined struts, an inside steel template is fixed by adopting the adjustable inclined struts after being preliminarily installed in place, an outside steel template is fixed by means of each hanging device at the top of the inside steel template, the inside steel template and the outside steel template are tensioned by using pull screws after being preliminarily installed in place, and the verticality of the steel templates is adjusted by using turn adjusting buckles and hanger rods on the adjustable inclined struts. The installation method comprises the following construction steps of: (1) performing pre-strengthening connection of the inside and outside steel templates; (2) manufacturing and installing a hanging bracket; (3) preliminarily installing the inside steel template; (4) installing the adjustable inclined struts of the inside steel template; (5) installing the hanger rods; (6) hoisting the outside steel template in place; (7) preliminarily installing the outside steel template; and (8) fixing and adjusting the inside and outside steel templates. The installation method is safe and reliable, and has quick progress and low production cost.
Description
Technical field
The invention belongs to the viaduct construction, relate in particular to a kind of mounting method of viaduct anticollision barrier construction steel form.
Background technology
In the speedway construction; The installation that limit works steel form (like outside crash barrier steel form) is faced in the work high above the ground of viaduct is the difficult point and the dead angle of the safety precaution of high falling accident; In the tradition viaduct construction, this steel form is installed the most of the time constructor and is needed unsettled operation, and the support of steel form mainly relies on and faces the works outside, limit and take the Churn drill perforating that built-in fitting is installed; After finishing, construction needs ruined works is cleared up and repaired to built-in fitting; Traditional mounting method not only security risk is high, and has destroyed the original structure thing, and quality accidents such as mould, expander also take place to run when building the anticollision barrier concrete component easily.
Summary of the invention
The purpose of this invention is to provide the mounting method of a kind of viaduct outside anticollision barrier construction with the external hanging type steel form; Improve the safety that viaduct outside crash barrier steel form is installed effectively, can avoid the unsettled operation of constructor fully, need not perforating built-in fitting is installed; Need not built-in fitting is cleared up; Do not destroy the original structure thing, accelerating construction progress reduces production costs.
The objective of the invention is to realize like this: the anticollision barrier construction of a kind of viaduct outside is with the mounting method of external hanging type steel form; It is characterized in that: utilize the pulling force strong point of the embedded bar of existing viaduct deck paving as adjustable diagonal brace; Inboard steel form (annotate: i.e. right side steel form among Fig. 1) is just adorned back in place and is adopted adjustable diagonal brace that each inboard steel form is fixed; Outside steel form (annotate: i.e. left side steel form among Fig. 1) each suspension apparatus suspention at steel form top in the inner part is fixing; The medial and lateral steel form just adorn in place after; With medial and lateral steel form tension, utilize the gaily decorated basket on the adjustable diagonal brace to regulate the verticality that bolt and suspension rod are regulated the medial and lateral steel form with Screw arbor with nut at both-ends then, make it the compliant requirement.
The anticollision barrier construction of this viaduct outside with the construction sequence of the mounting method of external hanging type steel form is:
(1), inboard steel form and in blocks the reinforcing the connection in advance of outside steel form;
(2), the making of pipe-hanging hook and installation;
(3), just adorn inboard punching block plate;
(4), the adjustable diagonal brace of inboard steel form is installed;
(5), suspension rod is installed;
(6), the hoisted in position of outside punching block plate;
(7), just adorn outside punching block plate;
(8), the fixing and adjustment of inboard punching block plate and outside punching block plate.
Wherein:
(1), inboard steel form and in blocks the reinforcing the connection in advance of outer steel mould plate:
After steel form 5,10 processing in medial and lateral are entered the job site in flakes; At the construction field (site) inboard steel form 5 and outside steel form 10 are carried out consolidation process; Scheme of Strengthening is at first at the reinforcing bar processing space each steel form connecting reinforcement 6 to be used the shape respectively machine-shaping of angle-bender by medial and lateral steel form 5,10; By going to the back to be uniformly distributed with steel form connecting reinforcement 6 correspondences are welded on the connection crossbeam 7 (back cord) of inboard steel form 5 and outside steel form 10 then by every 3m spacing together; Weld seam adopts double welding, and after the welding, the connection crossbeam 7 (back cord) of inboard steel form 5 and outside steel form 10 is through each steel form connecting reinforcement 6; Increased the vertical pulling force of medial and lateral steel form 5,10, whole stressed when guaranteeing that medial and lateral steel form 5,10 is installed;
After medial and lateral steel form 5,10 reinforces the connection; Steel form 10 second road connection crossbeam 7 (back cord) is from top to bottom gone up and is bored hole for hoist respectively corresponding to the position of each steel form connecting reinforcement 6 in the outside; The all necessary correspondence in the hole of when lifting as outside steel form 10 suspension rod 9 being installed, the position of each hole for hoist and each steel form connecting reinforcement 6 are on same vertical plane;
(2), the making of pipe-hanging hook and installation:
Pipe-hanging hook 8 adopts the gusseted structure; Formed by rectangular arm and diagonal brace assembly welding, and on the horizontal left end section of arm, bore boom hole, pipe-hanging hook 8 uses 10 channel-section steels to make; The arm of pipe-hanging hook 8 is welded in that the steel form processing space is rolling; And the diagonal brace that is welded is made into the gusseted structure, and pipe-hanging hook 8 adopts three welderings that the bottom of pipe-hanging hook 8 fixedly is welded in the top of inboard steel form 5 and corresponding being connected on the crossbeam 7 (back cord) after making into the job site;
(3), just adorn inboard punching block plate:
Use light-duty crane with inboard steel form 5 hoisted in position in blocks, erection sequence is for to begin from the bridge end, by going to the back by striding installation; When just dressing up the inboard steel form 5 of sheet; The inboard steel form 5 of each sheet is connected into full wafer through bolt horizontal (by going to the back), and Screw arbor with nut at both-ends wouldn't be installed, and after connecting the inboard steel form 5 of full wafer is leaned against on the guardrail reinforcing bar; And it is temporary fixed to use steel pipe to support in the right outside of inboard steel form 5, guarantees that the inboard steel form 5 of this full wafer does not topple;
(4), the adjustable diagonal brace of inboard steel form is installed:
This adjustable diagonal brace is regulated bolt 3 by the diagonal brace pull bar 2 and the gaily decorated basket and is formed; The gib head that utilizes diagonal brace pull bar 2 bottoms is fixed on the lower end correspondence of this diagonal brace pull bar 2 on the viaduct deck paving embedded bar 1; The upper end of each diagonal brace pull bar 2 is corresponding respectively to be fixed on each the steel form connecting reinforcement 6 on the inboard steel form 5; Regulating each gaily decorated basket adjusting bolt 3 should adhere to specification the verticality of the inboard steel form 5 of full wafer; The bottom that the outside uses steel pipe to support the inboard steel form 5 of this full wafer at interval about the lower end of the inboard steel form 5 of full wafer holds out against; Guaranteeing the stability of the inboard steel form 5 of this full wafer, and remove the steel pipe of the inboard steel form 5 right lateral interim support steel forms of this full wafer;
(5), suspension rod is installed:
Suspension rod 9 is installed; This suspension rod 9 is stocks of two ends Duan Douwei external thread section up and down; The lower end section correspondence of each suspension rod 9 is installed in each hole for hoist on the connection crossbeam 7 (back cord) of outside steel form 10; Be screwed nut in each suspension rod 9 overhanging bottom, and the top of steel form 10 uses rope that each suspension rod 9 is temporary fixed in the outside;
(6), the hoisted in position of outside punching block plate:
Utilize light-duty crane with each sheet outside steel form 10 hoisted in position, and the upper end section correspondence of each suspension rod 9 on each sheet outside steel form 10 is passed the boom hole on each pipe-hanging hook 8, and it is temporary fixed to be screwed wing nut;
(7), just adorn outside punching block plate:
Remove the temporary fixed rope on each suspension rod 9; Be suspended on each sheet outside steel form 10 on each pipe-hanging hook 8 at inboard steel form 5 tops through suspension rod 9; The wing nut of tightening on each suspension rod 9 is fixed, and the height of steel form 10 is until design elevation outside regulating through the wing nut on the suspension rod 9;
(8), the fixing and adjustment of inboard punching block plate and outside punching block plate:
The corresponding respectively Screw arbor with nut at both-ends 4 of installing on medial and lateral steel form in blocks 5,10; With 5,10 fixations of medial and lateral steel form; Regulate the gaily decorated basket and regulate the verticality compliant requirement that bolt 3 makes inboard steel form 5; Regulate the verticality compliant requirement that Screw arbor with nut at both-ends 4 and suspension rod 9 make outside steel form 10, after medial and lateral steel form 5,10 was installed, adjusting puts in place, the steel pipe of removing inboard steel form 5 bottoms supported.
Viaduct outside anticollision barrier construction proposed by the invention is with the mounting method of external hanging type steel form; Improved the safety that the viaduct anticollision barrier is installed steel form effectively, can avoid the unsettled operation of constructor fully, need not perforating built-in fitting is installed; Need not built-in fitting is cleared up; Do not destroy the original structure thing, accelerated construction speed, reduced cost of production.
Combine accompanying drawing and embodiment that viaduct outside anticollision barrier construction proposed by the invention mounting method with the external hanging type steel form is described further at present.
Description of drawings
Fig. 1 is the site operation sketch map of viaduct proposed by the invention outside anticollision barrier construction with the mounting method of external hanging type steel form.
Among Fig. 1:
1, deck paving embedded bar 2, diagonal brace pull bar 3, the gaily decorated basket are regulated bolt 4, Screw arbor with nut at both-ends 5, inboard steel form 6, steel form connecting reinforcement 7, are connected crossbeam 8, pipe-hanging hook 9, suspension rod 10, outside steel form.
The specific embodiment
Embodiment:
(1) six military highway projects reinforced anticollision barrier in Anhui Province's adopts the construction of this installation method:
Reinforced anticollision barrier medial and lateral steel form installation expense comparison through two identical bridges of structure types in this project; Adopt the construct installation of per 100 meters guardrail steel forms of this installation method can save 2 days durations, save construction and safety measure and drop into 21200 yuan of expenses; This project amounts to 9 bridge blocks, and all the other bridges have not all adopted the construction of this installation method this installation method except that bridge of bridge mouth adopts; This project reinforced anticollision barrier 4665m that constructs altogether completely; Adopt the construction of this installation method to save 93 days durations altogether, save construction and safety measure altogether and drop into 988980 yuan of expenses.
A bridge outside of this project bridge mouth anticollision barrier total length 350m does not adopt this installation method, adopts the construction of conventional template mounting process:
Main artificial, machinery, material input situation are: 1,45 days construction periods, 2,168 work days of concrete boring perforating embedded bar, 3,84 machine-teams of concrete boring electric drill; 4,150 work days of cutting built-in fitting reinforcing bar, 5, Abrasive cutting off machine 75 machine-teams, 6,1 in light-duty crane; 7, hang blue 5,8, steel form installs artificial 250 work days of work day, 8, outside steel form 70m in the reinforced anticollision barrier; 9, the diagonal brace pull bar and the gaily decorated basket are regulated 15 on bolt, and 10, electric welding machine 110 machine-teams, drop into 45 days durations altogether; Main operating expenses input is 125355 yuan, and security costs drops into 32750 yuan.
The viaduct outside, this project Wang Jia gulf anticollision barrier total length 350m adopts the construction of this installation method, and main manual work, machinery, material input situation are: 1,28 days construction periods; 2, light-duty crane is 1, and 3, steel form installs artificial 180 work days of work day, 4, steel form connecting reinforcement Ф 16 reinforcing bar 22.4m; 5, No. 16 channel-section steel 18.6m of suspension apparatus, 6, suspension rod (Ф 16 screw rods) 16.8m, 7, outside steel form 70m in the reinforced anticollision barrier; 8, the diagonal brace pull bar and the gaily decorated basket are regulated 15 on bolt, and 9, electric welding machine 35 machine-teams, drop into 28 days durations altogether; Main operating expenses input is 66439 yuan, and security costs drops into 17467 yuan.
(2) Tianjin seascape main road project solely flows the construction of this installation of distributary grand bridge employing method:
The outer guardrail total length 2160m of this bridge, main artificial, machinery, material input situation are: 1,168 days construction periods, 2,1 in light-duty crane; 3, steel form is installed artificial 1056 work days of work day, and 4, steel form connecting reinforcement Ф 16 reinforcing bar 38.4m, 5, No. 16 channel-section steel 31.9m of suspension apparatus; 6, suspension rod (Ф 16 screw rods) 28.8m, 7, outside steel form 120m in the reinforced anticollision barrier, 8, diagonal brace pull bar and the gaily decorated basket regulate 28 on bolt; 9, electric welding machine 216 machine-teams drop into 25 days durations altogether, and main operating expenses input is 463565 yuan; Security costs drops into 114537 yuan, and the concrete operations step is identical with Wang Jia gulf viaduct guardrail constructing operation step, more traditional construction technology; Adopt the construction of this installation method to save 109 days durations, save construction and safety measure and drop into 397632 yuan of expenses.
Claims (1)
1. a viaduct outside anticollision barrier is constructed with the mounting method of external hanging type steel form; It is characterized in that: utilize the pulling force strong point of the embedded bar of existing viaduct deck paving as adjustable diagonal brace; Inboard steel form is just adorned back in place and is adopted adjustable diagonal brace that each inboard steel form is fixed; The outside steel form suspension apparatus suspention at steel form top in the inner part is fixing, the medial and lateral steel form just adorn in place after, with Screw arbor with nut at both-ends the medial and lateral steel form is strained; Utilize the gaily decorated basket on the adjustable diagonal brace to regulate the verticality that bolt and suspension rod are regulated the medial and lateral steel form then, make it the compliant requirement;
The anticollision barrier construction of this viaduct outside with the construction sequence of the mounting method of external hanging type steel form is:
(1), inboard steel form and in blocks the reinforcing the connection in advance of outside steel form;
(2), the making of pipe-hanging hook and installation;
(3), just adorn inboard punching block plate;
(4), the adjustable diagonal brace of inboard steel form is installed;
(5), suspension rod is installed;
(6), the hoisted in position of outside punching block plate;
(7), just adorn outside punching block plate;
(8), the fixing and adjustment of inboard punching block plate and outside punching block plate;
Wherein:
(1), inboard steel form and in blocks the reinforcing the connection in advance of outer steel mould plate:
Inboard steel form (5) and outside steel form (10) all adopt set shaped steel formwork; Steel form connects crossbeam (7) and uses No. 10 channel-section steels; Medial and lateral steel form (5,10) is pressed the physical dimension Design and Machining moulding of bridge outside anticollision barrier at the steel form processing space; The intensity and the rigidity of this medial and lateral steel form (5,10) all adhere to specification; And the connection crossbeam (7) that on the external surface of medial and lateral steel form (5,10), is welded symmetrically respectively from top to bottom, the corresponding assembly welding of each medial and lateral steel form (5,10) is in blocks;
After medial and lateral steel form (5,10) processing is entered the job site in flakes; At the construction field (site) inboard steel form (5) and outside steel form (10) are carried out consolidation process; Scheme of Strengthening is at first at the reinforcing bar processing space steel form connecting reinforcement (6) to be used the shape respectively machine-shaping of angle-bender by medial and lateral steel form (5,10); Then by going to the back to be uniformly distributed with by every 3m spacing together; With each steel form connecting reinforcement (6) respectively correspondence be welded on the connection crossbeam (7) of inboard steel form (5) and outside steel form (10); Weld seam adopts double welding, and after the welding, the connection crossbeam (7) of inboard steel form (5) and outside steel form (10) is through each steel form connecting reinforcement (6); Increased the vertical pulling force of medial and lateral steel forms (5,10), integral body is stressed when installing with assurance medial and lateral steel forms (5,10);
After medial and lateral steel form (5,10) reinforces the connection; The steel form in the outside (10) second road from top to bottom connects crossbeam (7) and goes up the position brill hole for hoist corresponding to each steel form connecting reinforcement (6); The hole of suspension rod (9) is installed when lifting as outside steel form (10), and all necessary correspondence in the position of each hole for hoist and each steel form connecting reinforcement (6) are on same vertical plane;
(2), the making of pipe-hanging hook and installation:
Pipe-hanging hook (8) adopts the gusseted structure; Form by rectangular arm and diagonal brace assembly welding; And on the horizontal left end section of arm, bore boom hole; Pipe-hanging hook (8) uses No. 10 channel-section steels to make, and the arm of pipe-hanging hook (8) is welded in that the steel form processing space is rolling, and the diagonal brace that is welded is made into the gusseted structure; After pipe-hanging hook (8) is made into the job site, adopt three welderings that the bottom of pipe-hanging hook (8) fixedly is welded in the top of inboard steel form (5) and corresponding being connected on the crossbeam (7);
(3), just adorn inboard punching block plate:
Use light-duty crane with inboard steel form (5) hoisted in position in blocks; Erection sequence is for to begin from the bridge end; By going to the back, when just dressing up the inboard steel form (5) of sheet, the inboard steel form of each sheet (5) is laterally connected into full wafer through bolt by striding installation; Screw arbor with nut at both-ends wouldn't be installed; After connecting the inboard steel form of full wafer (5) is leaned against on the guardrail reinforcing bar, and use the steel pipe support temporary fixed, guarantee that inboard steel form of this full wafer (5) does not topple at the left-external side of inboard steel form (5);
(4), the adjustable diagonal brace of inboard steel form is installed:
This adjustable diagonal brace is regulated bolt (3) by the diagonal brace pull bar (2) and the gaily decorated basket and is formed; The gib head that utilizes diagonal brace pull bar (2) bottom is fixed on the lower end correspondence of this diagonal brace pull bar (2) on the viaduct deck paving embedded bar (1); The upper end of each diagonal brace pull bar (2) correspondence respectively is fixed on each the steel form connecting reinforcement (6) on the inboard steel form (5); Regulating each gaily decorated basket adjusting bolt (3) should adhere to specification the verticality of the inboard steel form of full wafer (5); The bottom that the outside uses steel pipe to support the inboard steel form of this full wafer (5) at interval about the inboard steel form (5) of full wafer lower end holds out against; Guarantee the stability of the inboard steel form of this full wafer (5), and remove the steel pipe of the interim support steel form of inboard steel form (5) left-external side of this full wafer;
(5), suspension rod is installed:
Suspension rod (9) is installed; This suspension rod (9) is the stock of two ends Duan Douwei external thread section up and down; The lower end section correspondence of each suspension rod (9) is installed in each hole for hoist on the connection crossbeam (7) of outside steel form (10); Be screwed nut in the overhanging bottom of each suspension rod (9), and the top of steel form (10) uses rope that each suspension rod (9) is temporary fixed in the outside;
(6), the hoisted in position of outside punching block plate:
Utilize light-duty crane with each sheet outside steel form (10) hoisted in position, and the upper end section correspondence of each suspension rod (9) on each sheet outside steel form (10) is passed the boom hole on each pipe-hanging hook (8), and it is temporary fixed to be screwed wing nut;
(7), just adorn outside punching block plate:
Remove the temporary fixed rope on each suspension rod (9); Be suspended on each sheet outside steel form (10) on each pipe-hanging hook (8) at inboard steel form (5) top through suspension rod (9); The wing nut of tightening on each suspension rod (9) is fixed, and the height of steel form (10) is until design elevation outside regulating through the wing nut on the suspension rod (9);
(8), the fixing and adjustment of inboard punching block plate and outside punching block plate:
Go up the corresponding respectively Screw arbor with nut at both-ends (4) of installing at medial and lateral steel form in blocks (5,10); With medial and lateral steel form (5,10) fixation; Regulate the gaily decorated basket and regulate the verticality compliant requirement that bolt (3) makes inboard steel form (5); Regulate the verticality compliant requirement that Screw arbor with nut at both-ends (4) and suspension rod (9) make outside steel form (10), after medial and lateral steel form (5,10) was installed, adjusting puts in place, the steel pipe of removing inboard steel form (5) bottom supported.
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| CN102182150B true CN102182150B (en) | 2012-05-23 |
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| CN103334379B (en) * | 2013-06-27 | 2015-08-05 | 中铁四局集团第三建设有限公司 | A kind of construction method for anti-collision guard rail for highways overhanging portion |
| CN106049285B (en) * | 2016-06-07 | 2018-06-19 | 中铁港航局集团有限公司 | A kind of method of the cast-in-place colored pool anti-collision wall formwork reinforcement of urban interchange |
| CN107237272A (en) * | 2017-07-24 | 2017-10-10 | 中交二航局南方工程有限公司 | Crash barrier template structure and anticollision barrier casting system |
| CN110318337A (en) * | 2019-05-22 | 2019-10-11 | 中建四局第六建筑工程有限公司 | A kind of bridge side guardrail formwork structure and its construction method |
| CN111155434A (en) * | 2020-01-03 | 2020-05-15 | 中冶交通建设集团有限公司 | Construction method and device for concrete covered guardrail of viaduct bridge |
| CN112299194B (en) * | 2020-12-12 | 2022-03-15 | 博仕通电梯有限公司 | Guide rail bracket in elevator shaft |
| CN114045748A (en) * | 2021-11-12 | 2022-02-15 | 中国十七冶集团有限公司 | Movable formwork installation construction method for bridge guardrail |
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| JP3188247B2 (en) * | 1999-04-16 | 2001-07-16 | 株式会社 武田吾慎商店 | Single pipe hoop scaffold and its temporary construction method |
| KR20030093680A (en) * | 2002-06-05 | 2003-12-11 | 브이에스엘코리아 주식회사 | The construction method of double-t girder bridge by underslung movable scaffolding system |
| CN2773156Y (en) * | 2005-04-13 | 2006-04-19 | 路俊生 | Integrated template of cast-in-situs concrete barrier for bridge |
| JP4634917B2 (en) * | 2005-11-18 | 2011-02-16 | ヒロセ株式会社 | Mobile suspension scaffolding |
| CN100476076C (en) * | 2007-09-17 | 2009-04-08 | 中铁二局股份有限公司 | Mobile integral construction platform, construction method thereof and special sling for the same |
| CN101858057B (en) * | 2010-06-11 | 2011-08-10 | 天津二十冶建设有限公司 | Method for rapidly mounting reinforced concrete crash barrier steel form |
| CN201794028U (en) * | 2010-09-16 | 2011-04-13 | 中铁十九局集团第二工程有限公司 | Anti-collision guardrail template |
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