CN106522102A - Side span construction support, rigid frame bridge side span and rigid frame bridge - Google Patents

Side span construction support, rigid frame bridge side span and rigid frame bridge Download PDF

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Publication number
CN106522102A
CN106522102A CN201611036591.3A CN201611036591A CN106522102A CN 106522102 A CN106522102 A CN 106522102A CN 201611036591 A CN201611036591 A CN 201611036591A CN 106522102 A CN106522102 A CN 106522102A
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CN
China
Prior art keywords
bay
rigid frame
construction
truss
frame bridge
Prior art date
Application number
CN201611036591.3A
Other languages
Chinese (zh)
Inventor
白晓宏
戈振明
周炎平
徐占辉
周水兴
Original Assignee
中交公局海威工程建设有限公司
中交一公局海威工程建设有限公司
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Application filed by 中交公局海威工程建设有限公司, 中交一公局海威工程建设有限公司 filed Critical 中交公局海威工程建设有限公司
Priority to CN201611036591.3A priority Critical patent/CN106522102A/en
Publication of CN106522102A publication Critical patent/CN106522102A/en

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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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D1/00Bridges in general

Abstract

The invention provides a side span construction support, a rigid frame bridge side span and a rigid frame bridge, which belong to the bridge construction field. The side span construction support comprises a truss structure, longitudinal beams, a first transverse beam, a second transverse beam and a hanger rod, wherein the first transverse beam is supported at the top of the truss structure; the longitudinal beams are positioned under the truss structure; the second transverse beam respectively props against the bottoms of the plurality of longitudinal beams; the hanger rod runs through the first transverse beam, the truss structure and the second transverse beam in sequence from top to bottom and screw caps at the two ends of the hanger rod respectively prop against the first transverse beam and the second transverse beam. The rigid frame bridge side span comprises a side span and the side span construction support, wherein the side span construction support is supported on the side span. The rigid frame bridge comprises a pier, a bent cap and the rigid frame bridge side span, wherein the bent cap is arranged at the top of the pier; and one end of the rigid frame bridge side span is supported on the bent cap. The side span construction support, the rigid frame bridge side span and the rigid frame bridge, provided by the invention, have the advantages of simple and convenient construction, low cost and short period and can effectively ensure the construction quality and personnel safety of a bridge cast-in-place section.

Description

End bay construction bracket, rigid frame bridge end bay and rigid frame bridge

Technical field

The present invention relates to field of bridge construction, in particular to a kind of end bay construction bracket, rigid frame bridge end bay and firm structure Bridge.

Background technology

In mountainous area highway and Mountainous City, it is across mountain valley, river, mostly using pre-stressed concrete and consecutive steel structures Bridge, the construction of end bay Cast-in-Situ Segment and closure section carry out side-strut across cast-in-place section concrete weight frequently with floor stand, triangle bracket Amount.

High pier floor stand stability is poor, needs to constitute purlin formula structure with large diameter steel pipe, and is connected with bridge pier temporarily, deposits In the problem that material usage is more, construction risk is big;Although triangle bracket overcomes the problem of floor stand presence, but needs Pre-embedded steel slab and welding triangle bracket, the dowel length of pre-embedded steel slab, weldquality, and the welding of shelf bracket by bridge pier Cast-in-place section construction quality and personal security is directly connected to, needs to cut off bracket after the completion of construction, operation difficulty is big, and affects bridge The outward appearance of pier.

The content of the invention

It is an object of the invention to provide a kind of end bay construction bracket, its material materials is few, and construction risk is little, use cost It is low, it is easy to operate, the construction quality and personal security of end bay Cast-in-Situ Segment can be effectively ensured, while can also ensure that bridge pier completes Aesthetic property afterwards.

Another object of the present invention is to provide a kind of rigid frame bridge end bay, which has the simple and convenient safety of construction, low cost, The characteristics of cycle is short.

A further object of the present invention is to provide a kind of rigid frame bridge, and which has the simple and convenient safety of construction, quality after completion The characteristics of height, good looking appearance.

What embodiments of the invention were realized in:

A kind of end bay construction bracket, which includes truss structure, longeron, first crossbeam, second cross beam and suspension rod, described One crossbeam has many and is supported in the top of the truss structure, and the longeron has many and under the truss structure Side, the second cross beam have many and are respectively held against the bottom of many longerons, and the suspension rod sequentially passes through institute from top to bottom State first crossbeam, the truss structure and the second cross beam, the top of the suspension rod is provided with the first external screw thread and with First nut of one external screw thread matching, first nut push down the first crossbeam, bottom be provided with the second external screw thread and with Second nut of the second external screw thread matching, second nut prop up the second cross beam.

Further, in preferred embodiments of the present invention, the truss structure is Hanging Basket.

Further, in preferred embodiments of the present invention, the Hanging Basket is by multiple steel construction units direction along a straight line It is connected in sequence, the oblique girder steel of the steel construction unit upper girder steel, lower girder steel and four, the two ends per oblique girder steel described in root point The upper girder steel and the lower girder steel be not connected to, the common shape of the upper girder steel, the lower girder steel and four oblique girder steels Into three triangular structures.

Further, in preferred embodiments of the present invention, the truss structure is Bailey beam.

Further, in preferred embodiments of the present invention, the Bailey beam have multiple Bailey brackets along a straight line direction according to Secondary to be formed by connecting, the Bailey bracket is connected in sequence by multiple steel construction units, and the steel construction unit includes rectangle frame Frame and four hounds, four hounds surround rectangle structure jointly, and four angles of the rectangle structure connect respectively It is connected to the midpoint on four sides of the rectangular frame.

Further, in preferred embodiments of the present invention, the first crossbeam, second cross beam and longeron are I-shaped Steel.

Further, in preferred embodiments of the present invention, end bay construction bracket also include many anchor poles, the anchor pole from Top to bottm sequentially passes through the first crossbeam and the truss structure, be provided with the top of the anchor pole the 3rd external screw thread and with institute The 3rd nut of the 3rd external screw thread matching is stated, the 3rd nut pushes down the first crossbeam.

A kind of rigid frame bridge end bay, which includes end bay and above-mentioned end bay construction bracket, the suspension rod of the end bay construction bracket Through the Cast-in-Situ Segment of the end bay.

A kind of rigid frame bridge end bay, which includes end bay and above-mentioned end bay construction bracket, the suspension rod of the end bay construction bracket There are two and extend through the Cast-in-Situ Segment and closure section of the end bay.

A kind of rigid frame bridge, which includes bridge pier, bent cap and above-mentioned rigid frame bridge end bay, and the bent cap is arranged at the bridge pier Top, one end of the rigid frame bridge end bay are supported in the bent cap upper surface.

The beneficial effect of the embodiment of the present invention is:

Existing floor stand or A-frame are replaced with from job site this end bay construction bracket the truss for obtaining Structure, its material materials are few, and construction risk is little, and use cost is low, easy to operate, and the construction of end bay Cast-in-Situ Segment can be effectively ensured Quality and personal security, while the aesthetic property after bridge pier completion can also be ensured, effectively compensate for the defect of prior art.

This rigid frame bridge end bay includes end bay and above-mentioned end bay construction bracket, and which has the simple and convenient safety of construction, low cost, The characteristics of cycle is short, effectively compensate for the defect of prior art.

Rigid frame bridge includes bridge pier, bent cap and above-mentioned rigid frame bridge end bay, and which has the simple and convenient safety of construction, after completion The characteristics of quality height, good looking appearance, effectively compensate for the defect of prior art.

Description of the drawings

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this A little accompanying drawings obtain other related accompanying drawings.

The structural representation of the rigid frame bridge that Fig. 1 is provided for first embodiment of the invention;

The structural representation of the rigid frame bridge that Fig. 2 is provided for second embodiment of the invention.

Icon:100- rigid frame bridges;110- truss structures;120- suspension rods;130- first crossbeams;140- longerons; 150- second cross beams;160- anchor poles;200- end bays;300- bridge piers;400- bent caps;500- access bridges.

Specific embodiment

For making purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein The component of example can be arranged and be designed with a variety of configurations.

Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common The every other embodiment obtained under the premise of creative work is not made by technical staff, belongs to the model of present invention protection Enclose.

It should be noted that:Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then in subsequent accompanying drawing which further need not be defined and is explained.

In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ", The orientation of the instruction such as " level ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or position relationship, or should Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, and not Be indicate or imply the device or element of indication must have specific orientation, with specific azimuth configuration and operation, therefore not It is understood that as limitation of the present invention.Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage Solve as indicating or implying relative importance.

Additionally, the term such as term " level ", " vertical " is not offered as requiring part abswolute level or pendency, and can be slightly Low dip.As " level " only refers to for its direction relative " vertical " more level, it is not that the expression structure must be complete Full level, and can be to be slightly tilted.

In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or one The connection of body ground;Can be mechanically connected, or be welded connection;Can be joined directly together, it is also possible to by between intermediary Connect connected, can be the connection of two element internals.For the ordinary skill in the art, can be understood with concrete condition Above-mentioned term concrete meaning in the present invention.

First embodiment:

Fig. 1 is refer to, a kind of rigid frame bridge 100 is present embodiments provided, which includes bridge pier 300, bent cap 400 and above-mentioned Rigid frame bridge end bay.Wherein, bent cap 400 is arranged at the top of bridge pier 300, and one end of rigid frame bridge end bay is supported in 400 upper surface of bent cap.

100 end bay of rigid frame bridge includes end bay 200 and end bay construction bracket.Wherein, end bay 200 include Cast-in-Situ Segment, closure section, Multiple cantilever sections, Cast-in-Situ Segment, closure section, multiple cantilever sections are from end bay 200 near one end of bent cap 400 to away from bent cap 400 One end is sequentially connected.

End bay construction bracket includes truss structure 110, longeron 140, first crossbeam 130, second cross beam 150 and suspension rod 120。

Wherein, truss structure 110 can adopt various structures and form, and in the present embodiment, truss structure 110 is from extension Basket.Specifically, Hanging Basket is connected in sequence in direction along a straight line by multiple steel construction units, steel construction unit upper girder steel, lower steel Beam and four oblique girder steels, along the spaced and parallel setting of short transverse, per root, the two ends of oblique girder steel connect respectively for upper girder steel, lower girder steel In upper girder steel and lower girder steel, the oblique girder steel of upper girder steel, lower girder steel and four is collectively forming three triangular structures.Hanging Basket is integrally put It is placed in the upper surface of end bay 200.

First crossbeam 130, longeron 140 and second cross beam 150 can be using the structure of any strip, the present embodiment In, first crossbeam 130, longeron 140 and second cross beam 150 adopt I-steel.I-steel has simple structure, low cost It is honest and clean, the characteristics of easy for installation and strong weight capacity.

First crossbeam 130 has many and is supported in the top of truss structure 110, and many first crossbeams 130 are along end bay 200 Length direction parallel interval is arranged.

Longeron 140 has many and positioned at the lower section of truss structure 110, and many longerons 140 are put down along the width of end bay 200 Between-line spacing is arranged.The upper surface of many longerons 140 props up the lower surface of end bay 200.

Second cross beam 150 has many and is respectively held against the bottom of many longerons 140, and many second cross beams 150 are along end bay 200 Length direction parallel interval arrange.

Suspension rod 120 is provided with one and sequentially passes through first crossbeam 130, truss structure 110 from top to bottom near Cast-in-Situ Segment Side, the Cast-in-Situ Segment of end bay 200, longeron 140 and second cross beam 150.The top of suspension rod 120 be provided with the first external screw thread and The first nut matched with the first external screw thread, the bottom of the first nut push down the upper surface of first crossbeam 130, and bottom is provided with Two external screw threads and the second nut matched with the second external screw thread, the top of the second nut props up the upper surface of second cross beam 150.

In order to improve the mounting stability of truss structure 110, in the present embodiment, end bay construction bracket also includes many anchor poles 160.A part of anchor pole 160 sequentially passes through first crossbeam 130, truss structure 110 from top to bottom away from embedding behind one end of Cast-in-Situ Segment Enter in the cantilever section of end bay 200.The top of this part anchor pole 160 be provided with the 3rd external screw thread and match with the 3rd external screw thread Three nuts, push down the upper surface of first crossbeam 130 at the top of the 3rd nut.

Another part is from top to bottom through built-in edges after second cross beam 150 in 200 cantilever section.This part anchor pole 160 Bottom the 4th nut that is provided with the 4th external screw thread and matches with the 4th external screw thread, prop up second cross beam at the top of the 4th nut 150 lower surface.

The installation procedure of above-mentioned end bay construction bracket is as follows:

The first step, after prestressed strand tensioning is completed from the farthest cantilever section of Cast-in-Situ Segment, box girder cantilever is poured with extension Basket is moved at design attitude, anchoring locking;Second step, installs first crossbeam 130, suspension rod 120, second cross beam 150, longeron 140;3rd step, 200 Cast-in-Situ Segment of installation end bay is outer, inner side template.

It is as follows beneficial to the 200 cast-in-place section construction flow process of end bay of above-mentioned end bay construction bracket:

The first step, pours 200 Cast-in-Situ Segment of end bay, and health preserving is to design strength.Cantilever beam section is not entered during cast-in-place section concrete Row counterweight, makes bridge pier 300 produce displacement towards 200 closure section direction of end bay, saves tens tons to up to a hundred tons of counterweight;Second Step, in 200 cantilever section of end bay installs water tank, carries out cantilever T structures both sides counterweight, to guarantee that cantilever end does not produce relative displacement, Prevent concrete cracking;3rd step, installs the stiff skeleton of closure section, and colligation closure section reinforcing bar pours closure section concrete, When pouring closure section concrete, wait.4th step, the pier top off normal produced using 200 Cast-in-Situ Segment of end bay, in cancellation Across closure section pushing tow, simplifies operational procedure;5th step, the T structure cantilever beam additional deformations produced by 200 cast-in-place section construction of end bay, By arranging sections, lift amount is offset in advance.

The technique effect that the technical scheme that the present embodiment is provided is obtained is as follows:

Existing floor stand or A-frame are replaced with from job site this end bay construction bracket the truss for obtaining Structure 110, makes full use of existing construction equipment (Hanging Basket), without the need for extra steel pipe support or triangle bracket, eliminates triangle Carrier member is pre-buried, saves temporary component consumption, and material materials are few, and construction risk is little, and use cost is low, easy to operate, can be with The construction quality and personal security of 200 Cast-in-Situ Segment of end bay is effectively ensured, while can also ensure attractive in appearance after the completion of bridge pier 300 Property, effectively compensate for the defect of prior art.

The construction method of corresponding Cast-in-Situ Segment reduces the counterweight in 200 cast-in-place construction stage of end bay.It is existing end bay 200 is poured When pouring section construction, uneasy assembling heavy-water tank is made using Cast-in-Situ Segment gravity the bridge pier 300 of cantilever beam section produce off normal, is often eliminated Rule construction method needs the working procedure of the pushing tow before midspan closing, eliminates jacking equipment, applying across pushing tow in reducing Work operation.

This rigid frame bridge end bay includes end bay 200 and above-mentioned end bay construction bracket, and which has the simple and convenient safety of construction, cost It is low, the characteristics of cycle is short, meanwhile, end bay 200 is cast-in-place, closure section adopts same construction bracket, shorten support set up the time and Operation.The defect of prior art is compensate for effectively.

This rigid frame bridge 100 includes bridge pier 300, bent cap 400 and above-mentioned rigid frame bridge end bay, and which has construction simple and convenient Safety, after completion the characteristics of quality height, good looking appearance, effectively compensate for the defect of prior art.

Second embodiment:

Fig. 2 is refer to, the present embodiment provides a kind of rigid frame bridge 100, the technology of its unitary construction, construction technology and acquirement Effect is essentially identical with first embodiment, and difference is the version of truss structure 110 and mounting means.

In the present embodiment, truss structure 110 is Bailey beam.Specifically, Bailey beam has multiple Bailey brackets direction along a straight line It is connected in sequence, Bailey bracket is connected in sequence by multiple steel construction units, and steel construction unit includes rectangular frame and four Root hound, four hounds surround rectangle structure jointly, and four angles of rectangle structure are connected to rectangular frame Four sides midpoint.

Bailey beam is integrally positioned over the upper surface of end bay 200, and its one end is supported in the upper surface of end bay, and the other end is supported in 500 upper surface of access bridge.The suspension rod 120 of end bay construction bracket has two and extends through the Cast-in-Situ Segment and closure section of end bay 200, hangs First nut and the second nut of bar 120 is respectively held against the first crossbeam 130 and second cross beam 150 of relevant position.

The installation procedure of this end bay construction bracket is as follows:

The first step, after prestressed strand tensioning is completed from the farthest cantilever section of Cast-in-Situ Segment, in cantilever beam section and access bridge 500 On set up Bailey beam, Bailey beam one end is anchored on girder, and the other end is bearing on already installed access bridge 500;Second step, First crossbeam 130, suspension rod 120, second cross beam 150, longeron 140 are installed;3rd step, 200 Cast-in-Situ Segment of installation end bay is outer, interior side form Plate.

The preferred embodiments of the present invention are these are only, the present invention is not limited to, for those skilled in the art For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, Equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of end bay construction bracket, it is characterised in that including truss structure, longeron, first crossbeam, second cross beam and hang Bar, the first crossbeam have many and are supported in the top of the truss structure, and the longeron has many and is located at the truss The lower section of structure, the second cross beam have many and are respectively held against the bottom of many longerons, the suspension rod from top to bottom according to It is secondary through the first crossbeam, the truss structure and the second cross beam, the top of the suspension rod is provided with the first outer spiral shell Stricture of vagina and the first nut matched with first external screw thread, first nut push down the first crossbeam, and bottom is provided with Two external screw threads and the second nut matched with second external screw thread, second nut prop up the second cross beam.
2. end bay construction bracket according to claim 1, it is characterised in that the truss structure is Hanging Basket.
3. end bay construction bracket according to claim 2, it is characterised in that the Hanging Basket is by multiple steel construction units along Rectilinear direction is connected in sequence, the oblique girder steel of the steel construction unit upper girder steel, lower girder steel and four, per oblique girder steel described in root Two ends be connected to the upper girder steel and the lower girder steel, the upper girder steel, the lower girder steel and four oblique steel Beam is collectively forming three triangular structures.
4. end bay construction bracket according to claim 1, it is characterised in that the truss structure is Bailey beam.
5. end bay construction bracket according to claim 4, it is characterised in that the Bailey beam is by multiple Bailey brackets along always Line direction is connected in sequence, and the Bailey bracket is connected in sequence by multiple steel construction units, and the steel construction unit includes Rectangular frame and four hounds, four hounds surround rectangle structure jointly, four of the rectangle structure Angle is connected to the midpoint on four sides of the rectangular frame.
6. the end bay construction bracket according to claim 1-5 any one, it is characterised in that the first crossbeam, second Crossbeam and longeron are I-steel.
7. end bay construction bracket according to claim 1, it is characterised in that end bay construction bracket also includes many anchor poles, The anchor pole sequentially passes through the first crossbeam and the truss structure from top to bottom, is provided with outside the 3rd at the top of the anchor pole Screw thread and the 3rd nut matched with the 3rd external screw thread, the 3rd nut push down the first crossbeam.
8. a kind of rigid frame bridge end bay, it is characterised in that construct including the end bay described in end bay and claim 1-7 any one Support, the suspension rod of the end bay construction bracket run through the Cast-in-Situ Segment of the end bay.
9. a kind of rigid frame bridge end bay, it is characterised in that construct including the end bay described in end bay and claim 1-7 any one Support, the suspension rod of the end bay construction bracket have two and extend through the Cast-in-Situ Segment and closure section of the end bay.
10. a kind of rigid frame bridge, it is characterised in that including the rigid frame bridge end bay described in bridge pier, bent cap and claim 8 or 9, institute State bent cap and be arranged at the pier coping portion, one end of the rigid frame bridge end bay is supported in the bent cap upper surface.
CN201611036591.3A 2016-11-22 2016-11-22 Side span construction support, rigid frame bridge side span and rigid frame bridge CN106522102A (en)

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CN201611036591.3A CN106522102A (en) 2016-11-22 2016-11-22 Side span construction support, rigid frame bridge side span and rigid frame bridge

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Publication number Priority date Publication date Assignee Title
CN107905111A (en) * 2017-11-30 2018-04-13 中铁二十局集团有限公司 A kind of rigid frame-continuous girder end bay construction technology
CN111088755A (en) * 2019-12-09 2020-05-01 中国铁建港航局集团有限公司 Bridge construction method

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Publication number Priority date Publication date Assignee Title
CN107905111A (en) * 2017-11-30 2018-04-13 中铁二十局集团有限公司 A kind of rigid frame-continuous girder end bay construction technology
CN111088755A (en) * 2019-12-09 2020-05-01 中国铁建港航局集团有限公司 Bridge construction method

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Application publication date: 20170322