CN103243651B - Method for fixedly installing and leveling base of metal upright column of bridge guardrail - Google Patents

Method for fixedly installing and leveling base of metal upright column of bridge guardrail Download PDF

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Publication number
CN103243651B
CN103243651B CN201310145211.XA CN201310145211A CN103243651B CN 103243651 B CN103243651 B CN 103243651B CN 201310145211 A CN201310145211 A CN 201310145211A CN 103243651 B CN103243651 B CN 103243651B
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CN
China
Prior art keywords
frame
leveling
levelling
reinforcement
bolts
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CN201310145211.XA
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Chinese (zh)
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CN103243651A (en
Inventor
张宪堂
周红敏
王洪立
王兆东
张颖颖
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山东科技大学
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Priority to CN201310145211.XA priority Critical patent/CN103243651B/en
Publication of CN103243651A publication Critical patent/CN103243651A/en
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Publication of CN103243651B publication Critical patent/CN103243651B/en

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Abstract

The invention discloses a method for fixedly installing and leveling a base of a metal upright column of a bridge guardrail. The method includes leveling the base by the aid of a leveling device and fixedly welding the leveling device on a reinforcement cage by short reinforcing steel bars; removing the base construction leveling device and mounting corresponding base fixing devices on a bottom plate; and installing the metal beam-column guardrail after concrete is molded by means of pouring. The method has the advantages that a construction procedure is simple and is easy to learn, the leveling precision is high, the requirement on anchoring strength is met, the base leveling device can be reused, the construction speed is increased, the construction quality is improved, and the construction cost is reduced.

Description

The installation of Bridge guardrail metal upright post base is fixed and leveling method
Technical field
The present invention relates to Bridge guardrail, particularly relate to the construction method of Bridge guardrail metal upright post base.
Background technology
Along with the appearance of big-and-middle-sized bridge in recent years, beams of metal post fence is applied on bridge constantly to be increased.Beams of metal post fence structure effectively can protect errant vehicle, effectively reduces the probability that above-mentioned accident occurs, the loss that minimizing accident causes, improves the traffic safety level of speedway.In addition, guard bar structure has from anti-dazzle function, can effectively save antiglare shield expense, and guard bar structure facilitates mounted LED lamp lighting apparatus simultaneously, can effectively save lamp stand expense.
Bridge guardrail metal upright post should ensure vertically after installing on pontic, its appearance looks elegant can be made generous and can induce sight line on the one hand, makes it be in good stress on the other hand.Vertical bias can cause producing eccentricity pressure because of himself gravity, vertical load and accidentalia effect, and then production cross section produces relatively large moment of flexure, can not ensure that column has enough horizontal external such as ability opposing wind load, automobile impacting etc., make its in use possibility run-off the straight or unstability, form potential safety hazard.Bridge guardrail metal upright post opposing horizontal loading design load is comparatively large, requires that base must have enough intensity, rigidity to maintain side direction and the vertical stability of metal upright post.Therefore, the construction and installation of Bridge guardrail metal upright post base normally use it and have a significant impact.
At present, the construction installation method of Bridge guardrail metal upright post base is, pre-embedded bolt on Bridge guardrail, by Bridge guardrail metal upright post floor installation on pre-embedded bolt; In order to ensure metal uprights vertical, generally generally adopt the method for correcting before and after spirit level, sash weight to ensure vertical bury pipe.The method is installed and is fixed loosely, does not have enough holding capacity to resist the external force such as wind load, automobile impacting, is very easily blown down by wind-force and extract with external force; And the loaded down with trivial details trouble of construction Levelling operation process, consume a large amount of human and material resources and time, speed of application is low, is also difficult to ensure verticality.
Summary of the invention
In order to solve the above-mentioned deficiency of prior art, the installation that the invention provides a kind of Bridge guardrail metal upright post base is fixed and leveling method.
For achieving the above object, the method that the present invention takes is:
The installation of Bridge guardrail metal upright post base is fixed and a leveling method, it is characterized in that, takes following steps:
The first step: first make a levelling device; Levelling device structure is, it is the right angle frame be formed by fixedly connecting by the top frame of a vertical side frame and a level; Described side frame is a closed frame, bottom two legs of side frame, be respectively equipped with leveling bolt; Described top frame is an opening frame, that is the end pushing up frame is uncovered, two cross bars of top frame are provided with one and strengthen vertical pole, frame cross bar both sides, top bottom surface between top frame end and reinforcement vertical pole is respectively equipped with two support claws stretched out to the inside, and four support claws form a horizontal support face; At the U-shaped frame that top frame end lap has outwards to lean out; Hound is provided with in right angle frame both sides.
Get out one block of leveling steel plate, two pieces of anchor plates and four set bolts; Wherein leveling steel plate and anchor plate are all processed with the unthreaded hole corresponding with metal upright post base installing hole; The length of four set bolts is greater than guardrail apical side height, and the later stage in order to metal upright post base installs;
Second step: before Bridge guardrail concrete structure pouring, above cage of reinforcement levelling device being placed on Bridge guardrail concrete structure, the U-shaped frame of levelling device is overlapped on the outboard template of concrete guardrail outside pontic;
3rd step: below cage of reinforcement top layer longitudinal reinforcement anchor plate being placed in Bridge guardrail concrete structure under levelling device, put on four set bolts by unthreaded hole below anchor plate; The bottom of four set bolts is supported on bridge face, and the top of four set bolts is vertically exposed from the horizontal plane of levelling device top frame, and the nut on adjustment set bolt is held anchor plate and is close to cage of reinforcement;
4th step, the unthreaded hole of leveling steel plate is aimed at four set bolts, transfer on the support claw of levelling device top frame after aligning, held by support claw temporarily, a level(l)ing bubble is placed on leveling steel plate, then the leveling bolt on adjustment levelling device two legs, makes leveling upper surface of steel plate and outboard template top is in sustained height until leveling;
5th step: after leveling, according to the short section of reinforcing bar of the gap length extemporaneous preparation between leveling steel plate and cage of reinforcement, by short section of reinforcing bar welding manner by leveling Plate Welding on cage of reinforcement; Take off levelling device subsequently;
6th step: then build Bridge guardrail concrete structure, by four set bolts and anchor plate and concrete structure pouring integral, make the end face of leveling steel plate floating consistent with Bridge guardrail surface after building, four anchor stud head exposed are for installing metal upright post base.
Good effect of the present invention is, when installing metal upright post base, need not correct before and after loaded down with trivial details ground and ensure verticality, as long as base holes is aimed at four anchor stud head exposed, nut of screwing on, so install simple and fast; Because this device and cage of reinforcement weld together, so metal upright post fixation, be not easily pulled out.This method operating process is easy, and levelling device can reuse, and construction precision is higher, speed of application and quality high, effectively can reduce construction cost.
Accompanying drawing explanation
Fig. 1 is used unit of the present invention and location diagram.
Fig. 2 is the lateral view of levelling device in Fig. 1;
Fig. 3 is the top view of levelling device in Fig. 1.
In figure: 1-leveling bolt; 2-side frame; 3-pushes up frame; 4-U shape frame; 5-hound; 6-anchor plate; 7-leveling steel plate; 8-set bolt; 9-adjusting nut; 10-cage of reinforcement top layer longitudinal reinforcement; 11-short section of reinforcing bar; 12-metal upright post base; 13-locking nut; 14-level(l)ing bubble; 15-outboard template; 16-Bridge guardrail concrete structure, 17-support claw, 18-cage of reinforcement, 19-strengthens vertical pole.
Detailed description of the invention
With reference to accompanying drawing, the present invention is described in more detail.
The installation of Bridge guardrail metal upright post base is fixed and a leveling method, takes following steps:
The first step: first make a levelling device; Levelling device structure is shown in Fig. 1-3, and it is the right angle frame be formed by fixedly connecting by the top frame 3 of a vertical side frame 2 and a level; Described side frame 2 is closed frames, bottom two legs of side frame 2, be respectively equipped with leveling bolt 1; Described top frame 3 is opening frames, that is the end pushing up frame 3 is uncovered, two cross bars of top frame 3 are provided with one and strengthen vertical pole 19 (see Fig. 3), frame cross bar both sides, top bottom surface between top frame 3 end and reinforcement vertical pole 19 is respectively equipped with two sections of bearing bars stretched out to the inside as support claw 17, and four support claws 17 form a horizontal support face; At the U-shaped frame 4 that top frame 3 end lap has outwards to lean out; Hound 5 is provided with in right angle frame both sides.
Get out one block of leveling steel plate, 7, two pieces of anchor plates 6 and four set bolts 8; Wherein leveling steel plate 7 and anchor plate 6 are processed with the unthreaded hole corresponding with metal upright post base 12 installing hole; The length of four set bolts 8 is greater than guardrail apical side height, and the later stage in order to metal upright post base 12 installs;
Second step: before Bridge guardrail concrete structure 16 is built, is placed on the top layer longitudinal reinforcement 10 of the cage of reinforcement 18 of Bridge guardrail concrete structure by levelling device, the U-shaped frame 4 of levelling device is overlapped on the outboard template 15 of concrete guardrail outside pontic;
3rd step: below the top layer longitudinal reinforcement 10 anchor plate 6 being placed in cage of reinforcement 18, put on four set bolts 8 by unthreaded hole below anchor plate 6; The bottom of four set bolts 8 is supported on bridge face, the top of four set bolts 8 is vertically exposed from frame 3 horizontal plane of levelling device top, and the adjusting nut 9 on adjustment set bolt 8 is held anchor plate 6 and is close to the top layer longitudinal reinforcement 10 of cage of reinforcement 18;
4th step, the unthreaded hole of leveling steel plate 7 is aimed at four set bolts 8, transfer on the support claw 17 of levelling device top frame 3 after aligning, held by support claw 17 temporarily, a level(l)ing bubble 14 is placed on leveling steel plate 7, then regulate the leveling bolt 1 on levelling device two legs, make leveling steel plate 7 upper surface and outboard template 15 top be in sustained height until leveling;
5th step: after leveling, prepares short section of reinforcing bar 11 according to the gap length between leveling steel plate 7 and the top layer longitudinal reinforcement 10 of cage of reinforcement 18, is welded on cage of reinforcement 18 by short section of reinforcing bar 11 welding manner by leveling steel plate 7; Take out outside parallel direction across bridge subsequently and take off levelling device;
6th step: then build Bridge guardrail concrete structure 16, four set bolts 8 and anchor plate 6 are built integral with concrete structure 16, make the end face of leveling steel plate 7 floating consistent with Bridge guardrail surface after building, four anchor stud head exposed are for installing metal upright post base 12.
When installing metal upright post base 12, as long as base holes to be aimed at four anchor stud head exposed, locking nut 13 of screwing on.
The parameters optimal relating to device in the present invention requires:
1, in described levelling device, leveling bolt 1 diameter should be greater than 8mm, and length is not less than 300mm, keeps overall structure to stablize to ensure enough intensity, and enough adjustment spaces; The rod member diameter of top frame 3 and side frame 2 should not be less than 16mm, and hound 5 diameter should not be less than 12mm; Top frame 3 length should not be less than 550mm, and side frame 2 is highly preferably 600 ~ 1000mm (depending on construction height), and right angle frame width should not be less than 300mm; U-shaped frame 4 should not be less than 150mm with the lap length of top frame 3, and U-shaped frame 4 extension elongation should be 100 ~ 200mm.
2, described set bolt 8 diameter 18 ~ 40mm, anchor plate 6 thickness is 12 ~ 20mm; The height that set bolt 8 exposes metal upright post base 12 meets installation locking nut 13.

Claims (1)

1. the installation of Bridge guardrail metal upright post base is fixed and a leveling method, it is characterized in that, takes following steps:
The first step: first make a levelling device; Levelling device structure is, it is the right angle frame be formed by fixedly connecting by the top frame of a vertical side frame and a level; Described side frame is a closed frame, bottom two legs of side frame, be respectively equipped with leveling bolt; Described top frame is an opening frame, that is the end pushing up frame is uncovered, two cross bars of top frame are provided with one and strengthen vertical pole, frame cross bar both sides, top bottom surface between top frame end and reinforcement vertical pole is respectively equipped with two support claws stretched out to the inside, and four support claws form a horizontal support face; At the U-shaped frame that top frame end lap has outwards to lean out; Hound is provided with in right angle frame both sides;
Get out one block of leveling steel plate, two pieces of anchor plates and four set bolts; Wherein leveling steel plate and anchor plate are all processed with the unthreaded hole corresponding with metal upright post base installing hole; The length of four set bolts is greater than guardrail apical side height, and the later stage in order to metal upright post base installs;
Second step: before Bridge guardrail concrete structure pouring, above cage of reinforcement levelling device being placed on Bridge guardrail concrete structure, the U-shaped frame of levelling device is overlapped on the outboard template of concrete guardrail outside pontic;
3rd step: below cage of reinforcement top layer longitudinal reinforcement anchor plate being placed in the Bridge guardrail concrete structure under levelling device, put on four set bolts by unthreaded hole below anchor plate; The bottom of four set bolts is supported on bridge face, and the top of four set bolts is vertically exposed from the horizontal plane of levelling device top frame, and the nut on adjustment set bolt is held anchor plate and is close to cage of reinforcement;
4th step, the unthreaded hole of leveling steel plate is aimed at four set bolts, transfer on the support claw of levelling device top frame after aligning, held by support claw temporarily, a level(l)ing bubble is placed on leveling steel plate, then the leveling bolt on adjustment levelling device two legs, makes leveling upper surface of steel plate and outboard template top is in sustained height until leveling;
5th step: after leveling, according to the short section of reinforcing bar of the gap length extemporaneous preparation between leveling steel plate and cage of reinforcement, by short section of reinforcing bar welding manner by leveling Plate Welding on cage of reinforcement; Take off levelling device subsequently;
6th step: then build Bridge guardrail concrete structure, by four set bolts and anchor plate and concrete structure pouring integral, make the end face of leveling steel plate floating consistent with Bridge guardrail surface after building, four anchor stud head exposed are for installing metal upright post base.
CN201310145211.XA 2013-04-24 2013-04-24 Method for fixedly installing and leveling base of metal upright column of bridge guardrail CN103243651B (en)

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CN201310145211.XA CN103243651B (en) 2013-04-24 2013-04-24 Method for fixedly installing and leveling base of metal upright column of bridge guardrail

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* Cited by examiner, † Cited by third party
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CN105841048A (en) * 2016-03-30 2016-08-10 龚婉婷 Dustproof fixing device for LED street lamp
CN105716016A (en) * 2016-03-30 2016-06-29 龚婉婷 Fixing device for LED street lamp
CN105737049A (en) * 2016-03-30 2016-07-06 龚婉婷 LED street lamp fixing device with sealing and dustproof functions
CN105841050A (en) * 2016-03-30 2016-08-10 龚婉婷 Stable fixing device for LED street lamp
CN105841049A (en) * 2016-03-30 2016-08-10 龚婉婷 Base device for gardening street lamp
CN105716015A (en) * 2016-03-30 2016-06-29 龚婉婷 Fixing device for LED street lamp
CN106702907B (en) * 2016-12-19 2018-05-01 中交路桥建设有限公司 A kind of Bridge guardrail base adjustable flange disk construction method

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GB2273310A (en) * 1992-12-10 1994-06-15 Thomas Steel Craik Improvements relating to buildings
JP3445129B2 (en) * 1997-12-01 2003-09-08 株式会社奥村組 Seismic reinforcement of underground pillars
DE102004017008B4 (en) * 2004-04-02 2009-10-22 Aloys Wobben Method for erecting a tower
CN101514541B (en) * 2009-03-25 2010-09-01 中铁二十一局集团第三工程有限公司 One-time leveling method for installation of large bridge support
CN202073113U (en) * 2011-04-07 2011-12-14 华锐风电科技(集团)股份有限公司 Foundation bolt base post-grouting supporting device
CN102758445B (en) * 2011-04-27 2015-01-07 华锐风电科技(集团)股份有限公司 Foundation forming method for wind driven generator tower
CN103015325B (en) * 2012-12-24 2015-05-27 中铁十七局集团第二工程有限公司 Construction method of cast-in-place concrete crash barrier with eaves

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