CN110863431A - Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision - Google Patents

Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision Download PDF

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Publication number
CN110863431A
CN110863431A CN201911155705.XA CN201911155705A CN110863431A CN 110863431 A CN110863431 A CN 110863431A CN 201911155705 A CN201911155705 A CN 201911155705A CN 110863431 A CN110863431 A CN 110863431A
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CN
China
Prior art keywords
guide cable
cable pipe
steel guide
suspender
anchor backing
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.)
Pending
Application number
CN201911155705.XA
Other languages
Chinese (zh)
Inventor
孙纯
郭恒来
金强
付志伟
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China MCC17 Group Co Ltd
Original Assignee
China MCC17 Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China MCC17 Group Co Ltd filed Critical China MCC17 Group Co Ltd
Priority to CN201911155705.XA priority Critical patent/CN110863431A/en
Publication of CN110863431A publication Critical patent/CN110863431A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses a method for reinforcing and improving the installation precision of a steel guide cable pipe of a suspension bridge suspender, which comprises the steps of accurately lofting the central point position of the steel guide cable pipe of the suspender, and simultaneously reversely calculating coordinates of four angular points of a bottom anchor backing plate and lofting; fixing two bolts at the lower side of the lofted position of the anchor backing plate, and extending the bolts out of the bridge bottom template; and drilling holes at corresponding positions of the anchor backing plates according to the positions of the bolts, adjusting the bolts according to the gradient of the bridge longitudinal slope of the actual bridge bottom plate to realize the leveling of the bottom anchor backing plates, and filling foaming agents into gaps at the bottoms of the anchor backing plates for sealing. The horizontal precision of the bottom of the steel guide cable pipe of the suspender is adjusted by using the bolt, the steel guide cable pipe is fixed by extending the bolt out of the bottom template of the box girder, the situation that the steel guide cable pipe floats upwards due to concrete pouring is avoided, and the bolt extends out of the bottom template of the box girder, so that the position of the steel guide cable pipe at the bottom of the box girder can be directly judged according to the embedded position of the bolt when the suspender is penetrated for system conversion, and the engineering quantity is greatly reduced.

Description

Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision
Technical Field
The invention belongs to a construction method of a steel guide cable pipe of a suspension bridge suspender, and particularly relates to a method for reinforcing the steel guide cable pipe of the suspension bridge suspender and improving the installation precision.
Background
At present, in the construction of suspension bridge engineering, the positioning precision and the reinforcing condition of a steel guide cable pipe of a suspender are of great importance, and the method is one of the key processes of whether the conversion of a suspension bridge system can be smoothly completed.
After accurate positioning lofting, how to ensure that the steel guide cable pipe cannot displace, float upwards or incline in the box girder concrete pouring process is the primary problem to be solved in the construction process of the suspender steel guide cable pipe, and a method for reinforcing and improving the installation precision of the suspender steel guide cable pipe of the suspension bridge is provided for solving the problems. .
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for reinforcing the steel guide cable pipe of the suspension rod of the suspension bridge and improving the installation precision is provided.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a method for reinforcing a steel guide cable pipe of a suspension bridge suspender and improving the installation precision, which comprises the following steps: the center point position of a steel guide cable pipe of the lofting suspender is accurate, and the coordinates of four corner points of the bottom anchor backing plate are inversely calculated and lofting is simultaneously carried out; fixing two bolts at the lower side of the lofted position of the anchor backing plate, and extending the bolts out of the bridge bottom template; and drilling holes at corresponding positions of the anchor backing plates according to the positions of the bolts, adjusting the bolts according to the gradient of the bridge longitudinal slope of the actual bridge bottom plate to realize the leveling of the bottom anchor backing plates, and filling foaming agents into gaps at the bottoms of the anchor backing plates for sealing.
Preferably, the suspender steel guide cable pipe is positioned at the intersection of the cross beam and the web plate in the box girder, the limiting steel bars are fixed on the cross beam and the web plate respectively in an umbrella shape, the steel bars extend out of the box girder bottom template to be fixed, and redundant steel bar heads are cut off after the strength of the box girder concrete reaches the standard and the form removal strength is allowed.
Preferably, the pipe wall range and the pipe center point position are determined on the transparent plastic plate according to the inside and outside diameter sizes of the orifice of the boom steel guide cable pipe, and the plastic transparent plate and the leveling rod are used for rechecking in real time in the fixing process of the limiting steel bars of the boom steel guide cable pipe, so that the center point position of the boom steel guide cable pipe and the inclination of the boom steel guide cable pipe meet the standard requirements.
Preferably, before concrete pouring, the upper opening of the suspender steel guide cable pipe is sealed by using an adhesive tape.
Compared with the prior art, the invention can obtain the following technical effects:
1. the invention utilizes the bolt to adjust the horizontal precision of the bottom of the steel guide cable pipe of the suspender and utilizes the bolt to extend out of the bottom template of the box girder for fixing, thereby avoiding the situation that the steel guide cable pipe floats upwards due to concrete pouring, and because the bolt extends out of the bottom template of the box girder, the position of the steel guide cable pipe at the bottom of the box girder can be directly judged according to the pre-embedded position of the bolt when the suspender is threaded for system conversion, compared with the prior art that the position of the bottom anchor backing plate is judged by inserting the reinforcing steel bar from the upper opening of the steel guide cable pipe, the invention greatly reduces the engineering quantity.
2. In the prior art, the measurement control of the upper opening of the steel guide cable pipe needs to mark points by a signal pen in the upper opening, a plurality of points need to be checked each time, and the observation is carried out by utilizing a transparent plastic plate and a level ruler, so that the observation is more convenient and quicker compared with the observation of marking points on the pipe opening of the steel guide cable in the prior art, the deviation and the inclination of a central point can be directly and clearly reflected, the correction is better carried out, and the installation precision in the construction process is greatly improved. The foaming agent and the adhesive plaster respectively seal the upper opening and the lower opening of the suspender steel guide cable pipe, thereby avoiding concrete inflow in the concrete pouring process and reducing the trouble of subsequent cleaning.
3. The method for reinforcing and improving the installation accuracy of the steel guide cable pipe of the suspension bridge hanger rod has the advantages of saving manpower, material resources and financial resources, improving the working efficiency, greatly improving the stability and the installation accuracy of the steel guide cable pipe of the hanger rod, ensuring the straightening of the hanger rod in the steel guide cable pipe in the system conversion process, ensuring the uniform stress of the hanger rod, playing a key role in the stress of a full-bridge structure, and having great construction superiority in the aspect of improving the stability and the installation accuracy of the steel guide cable pipe of the suspension bridge hanger rod.
4. The invention not only greatly improves the installation precision, has better stability of reinforcement, but also has strong operability, is easy to construct, reduces the potential safety hazard and saves the cost.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic of the present invention;
FIG. 2 is a plan view of a transparent plastic panel;
fig. 3 is a view of the boom fairlead floor lofting and bolt position.
In the figure:
1, a bolt;
2 a transparent plastic plate;
3, bolt holes;
4, top surface of box girder;
5, steel guide cable pipes;
6, a box girder bottom template;
7, longitudinal slope;
8 the bottom plate of the steel guide rope pipe of the suspender.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1, as shown in figures 1-3:
fig. 1 shows the top surface 4 of the box girder, the steel guide cable pipe 5, the bottom formwork 6 of the box girder, and the longitudinal slope 7.
Fig. 3 shows the boom steel fairlead floor loft and bolt hole 3 location and boom steel fairlead floor 8.
A method for reinforcing a steel guide cable pipe of a suspension bridge suspender and improving installation precision comprises the following steps: the center point position of a steel guide cable pipe of the lofting suspender is accurate, and the coordinates of four corner points of the bottom anchor backing plate are inversely calculated and lofting is simultaneously carried out; fixing two bolts 1 at the lower side of the lofted position of the anchor backing plate, and extending the bolts out of the bridge bottom template; and drilling holes at corresponding positions of the anchor backing plates according to the positions of the bolts, adjusting the bolts according to the gradient of the bridge longitudinal slope of the actual bridge bottom plate to realize the leveling of the bottom anchor backing plates, and filling foaming agents into gaps at the bottoms of the anchor backing plates for sealing.
The suspender steel guide cable pipe is positioned at the intersection of the cross beam and the web plate in the box girder, the limiting steel bars are fixed on the cross beam and the web plate respectively in an umbrella shape, the steel bars extend out of a bottom template of the box girder to be fixed, and redundant steel bar heads are cut off after the strength of concrete of the box girder reaches the standard and allows the form removal strength.
According to the inside and outside diameter size of the orifice of the suspender steel guide cable pipe, the pipe wall range and the pipe center point position are determined on the transparent plastic plate 2, and the plastic transparent plate and the level ruler are utilized to carry out recheck in real time in the fixing process of the limiting steel bars of the suspender steel guide cable pipe, so that the center point position of the suspender steel guide cable pipe and the inclination of the suspender steel guide cable pipe are ensured to meet the standard requirements.
Before concrete pouring, the upper opening of the suspender steel guide cable pipe is sealed by using an adhesive tape so as to prevent the subsequent suspender from being influenced by splashing into the pipe in the concrete pouring process and delay the construction period.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (4)

1. A method for reinforcing and improving installation accuracy of a steel guide cable pipe of a suspension bridge suspender is characterized by comprising the following steps: the center point position of a steel guide cable pipe of the lofting suspender is accurate, and the coordinates of four corner points of the bottom anchor backing plate are inversely calculated and lofting is simultaneously carried out; fixing two bolts at the lower side of the lofted position of the anchor backing plate, and extending the bolts out of the bridge bottom template; and drilling holes at corresponding positions of the anchor backing plates according to the positions of the bolts, adjusting the bolts according to the gradient of the bridge longitudinal slope of the actual bridge bottom plate to realize the leveling of the bottom anchor backing plates, and filling foaming agents into gaps at the bottoms of the anchor backing plates for sealing.
2. The method for reinforcing and improving the installation accuracy of the steel guide cable pipe of the suspension bridge suspender according to claim 1, wherein the method comprises the following steps: the suspender steel guide cable pipe is positioned at the intersection of the cross beam and the web plate in the box girder, the limiting steel bars are fixed on the cross beam and the web plate respectively in an umbrella shape, the steel bars extend out of a bottom template of the box girder to be fixed, and redundant steel bar heads are cut off after the strength of concrete of the box girder reaches the standard and allows the form removal strength.
3. The method for reinforcing and improving the installation accuracy of the steel guide cable pipe of the suspension bridge suspender according to claim 2, wherein the method comprises the following steps: the pipe wall range and the pipe center point position are determined on the transparent plastic plate according to the inside and outside diameter sizes of the orifice of the suspender steel guide cable pipe, and the plastic transparent plate and the level bar are used for rechecking in real time in the fixing process of the limiting steel bars of the suspender steel guide cable pipe, so that the center point position of the suspender steel guide cable pipe and the inclination of the suspender steel guide cable pipe are ensured to meet the standard requirements.
4. The method for reinforcing and improving the installation accuracy of the steel guide cable pipe of the suspension bridge suspender according to claim 3, wherein the method comprises the following steps: before concrete pouring, the upper opening of the suspender steel guide cable pipe is sealed by an adhesive tape.
CN201911155705.XA 2019-11-22 2019-11-22 Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision Pending CN110863431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911155705.XA CN110863431A (en) 2019-11-22 2019-11-22 Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911155705.XA CN110863431A (en) 2019-11-22 2019-11-22 Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision

Publications (1)

Publication Number Publication Date
CN110863431A true CN110863431A (en) 2020-03-06

Family

ID=69656397

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Country Status (1)

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CN (1) CN110863431A (en)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003236A (en) * 2002-04-04 2004-01-08 Kajima Corp Structure of joint between steel-concrete composite structure and reinforced concrete structure
CN101446071A (en) * 2008-12-30 2009-06-03 中铁二局股份有限公司 Method of exactly adjusting and locating curve steel box beam
KR20130036890A (en) * 2011-10-05 2013-04-15 권형규 Tied arched p.s.c girder for bridge and construction method for bridge by it
CN103046466A (en) * 2012-12-29 2013-04-17 广东省公路勘察规划设计院股份有限公司 Detectable, replaceable and adjustable arch bridge suspender system and method for constructing same
CN103643636A (en) * 2013-11-27 2014-03-19 南京润华市政建设有限公司 Rigid suspension rod pushing slippage device and slippage method thereof
CN204298720U (en) * 2014-11-20 2015-04-29 中铁大桥局集团第四工程有限公司 A kind of concrete box girder being provided with cable guide pipe positioner
CN204367159U (en) * 2015-01-05 2015-06-03 中铁十一局集团桥梁有限公司 A kind of anchor plate positioner
US20150204033A1 (en) * 2014-01-22 2015-07-23 Jack Allen Poff Pre-Fabricated Modular Boat Dock Assembly
CN104831632A (en) * 2015-04-24 2015-08-12 正坚建设有限公司 Upper transverse beam and lower transverse beam construction method for bridge cable bent tower
CN205604090U (en) * 2016-05-13 2016-09-28 中铁十七局集团第四工程有限公司 Cable -stay bridge space cable catheter positioning device
CN205636506U (en) * 2016-05-13 2016-10-12 中铁十七局集团第四工程有限公司 Positioner with adjustable cable -stay bridge cable pipe axis is measured
CN108505450A (en) * 2018-05-09 2018-09-07 中建三局基础设施建设投资有限公司 A kind of steel pipe arch bridge hanger erection simulator and application method
CN108611965A (en) * 2018-06-20 2018-10-02 杭州江润科技有限公司 Filled Steel Tubular Arch Bridge sunpender system and construction method
CN108660903A (en) * 2018-06-20 2018-10-16 安徽省交通建设股份有限公司 CFST Arch Bridge and construction method
CN109137737A (en) * 2018-09-04 2019-01-04 中交路桥华南工程有限公司 Cable guide pipe positioning device
CN208899333U (en) * 2018-09-19 2019-05-24 中交一公局第四工程有限公司 A kind of space curved surface suspension cable beam-ends cable guide pipe positioning device
CN110184919A (en) * 2019-04-26 2019-08-30 安徽省公路桥梁工程有限公司 The construction method of short leaning tower cable saddle locating system
CN110468720A (en) * 2019-08-29 2019-11-19 中国十七冶集团有限公司 A kind of construction method of analyzing self-anchored suspension bridge girder integral type placement layer by layer

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003236A (en) * 2002-04-04 2004-01-08 Kajima Corp Structure of joint between steel-concrete composite structure and reinforced concrete structure
CN101446071A (en) * 2008-12-30 2009-06-03 中铁二局股份有限公司 Method of exactly adjusting and locating curve steel box beam
KR20130036890A (en) * 2011-10-05 2013-04-15 권형규 Tied arched p.s.c girder for bridge and construction method for bridge by it
CN103046466A (en) * 2012-12-29 2013-04-17 广东省公路勘察规划设计院股份有限公司 Detectable, replaceable and adjustable arch bridge suspender system and method for constructing same
CN103643636A (en) * 2013-11-27 2014-03-19 南京润华市政建设有限公司 Rigid suspension rod pushing slippage device and slippage method thereof
US20150204033A1 (en) * 2014-01-22 2015-07-23 Jack Allen Poff Pre-Fabricated Modular Boat Dock Assembly
CN204298720U (en) * 2014-11-20 2015-04-29 中铁大桥局集团第四工程有限公司 A kind of concrete box girder being provided with cable guide pipe positioner
CN204367159U (en) * 2015-01-05 2015-06-03 中铁十一局集团桥梁有限公司 A kind of anchor plate positioner
CN104831632A (en) * 2015-04-24 2015-08-12 正坚建设有限公司 Upper transverse beam and lower transverse beam construction method for bridge cable bent tower
CN205636506U (en) * 2016-05-13 2016-10-12 中铁十七局集团第四工程有限公司 Positioner with adjustable cable -stay bridge cable pipe axis is measured
CN205604090U (en) * 2016-05-13 2016-09-28 中铁十七局集团第四工程有限公司 Cable -stay bridge space cable catheter positioning device
CN108505450A (en) * 2018-05-09 2018-09-07 中建三局基础设施建设投资有限公司 A kind of steel pipe arch bridge hanger erection simulator and application method
CN108611965A (en) * 2018-06-20 2018-10-02 杭州江润科技有限公司 Filled Steel Tubular Arch Bridge sunpender system and construction method
CN108660903A (en) * 2018-06-20 2018-10-16 安徽省交通建设股份有限公司 CFST Arch Bridge and construction method
CN109137737A (en) * 2018-09-04 2019-01-04 中交路桥华南工程有限公司 Cable guide pipe positioning device
CN208899333U (en) * 2018-09-19 2019-05-24 中交一公局第四工程有限公司 A kind of space curved surface suspension cable beam-ends cable guide pipe positioning device
CN110184919A (en) * 2019-04-26 2019-08-30 安徽省公路桥梁工程有限公司 The construction method of short leaning tower cable saddle locating system
CN110468720A (en) * 2019-08-29 2019-11-19 中国十七冶集团有限公司 A kind of construction method of analyzing self-anchored suspension bridge girder integral type placement layer by layer

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