CN107724244A - Temporary T structure and its construction method without bearing continuous rigid frame end bay beam section composition - Google Patents
Temporary T structure and its construction method without bearing continuous rigid frame end bay beam section composition Download PDFInfo
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- CN107724244A CN107724244A CN201711013525.9A CN201711013525A CN107724244A CN 107724244 A CN107724244 A CN 107724244A CN 201711013525 A CN201711013525 A CN 201711013525A CN 107724244 A CN107724244 A CN 107724244A
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- end bay
- segment
- cable wire
- cantilever
- cast
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The temporary T structure and its construction method of no bearing continuous rigid frame end bay beam section composition provided by the invention, the through hole being arranged on supporting apparatus is passed through to connect the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment using interim high-strength screw thread bar reinforcement, when concrete strength reaches design strength post-stretching high-strength screw thread bar reinforcement temporarily；End bay cantilever segment is poured using Hanging Basket cast-in-place cantilever method, using interim cable wire synchronization staged stretched end bay cantilever segment each stage to closure segment；Successively the permanent web cable wire of Multi-stage prestress, permanent bottom plate cable wire so that end bay cantilever segment and middle pier cantilever end bay section are closed up by closure segment, complete system transform.The construction method of the temporary T structure of no bearing continuous rigid frame end bay beam section composition provided by the invention, good with construction quality, cost is low, short construction period, the advantages that economic benefit and good social benefit, especially there is very strong competitiveness in the high pier continuous rigid frame construction of deep water.
Description
Technical field
The present invention relates to highway, the construction method technical field of railroad bridge structure, more particularly, to continuous without bearing
The temporary T structure and its construction method of firm structure end bay beam section composition.
Background technology
It is that new development in recent years is got up a kind of bridge type without bearing Continuous Rigid-Frame Bridge, with traditional continuous beam (firm structure) abutment pier
Movable bearing support is set to compare, abutment pier uses the form of pier consolidation.To better conform to the longitudinal extension of temperature load girder deformation,
Abutment pier uses the less double branch Thin-Wall Piers of thrust stiffness, and girder only consolidates with a wherein thin-walled column.By to domestic foreign minister
The research of bridge is closed, the main feature of no bearing continuous rigid frame has：(1) bearing is not set, avoids bearing damage, it is cost-effective, after
Phase maintenance cost is low, the line outage for avoiding replacing time from bringing；(2) good seismic performance, horizontal force can be shared equally during earthquake
Onto each bridge pier, and continuous bridge then needs to set braking pier, or uses dedicated shock-proof bearing；(3) Dun Liang directly consolidates phase
Even, lines are continuously bright and clear, total tune, and landscape effect is good.
Compared with traditional continuous beam (firm structure), the ratio between side span and main span of no bearing continuous rigid frame bridge is increased to by 0.5~0.6
0.8~1, structure is slimmer and more graceful.Larger ratio between side span and main span, cause the more conventional continuous beam of end bay Cast-in-Situ Segment (firm structure) long a lot, Fig. 1
For temporary rest pier in the prior art coordinate Bailey truss construction structural representation, as shown in figure 1, with Fuzhou-Xiamen high ferro Quanzhouwan across
Exemplified by extra large 3 × 70m of bridge is without bearing continuous rigid frame, the high 30~50m of this bridge pier, positioned at Quanzhou bay, water level is deeper, and stormy waves is very
Greatly.Ratio between side span and main span 1:1, middle pier cantilever construction length is 35m, the cast-in-place segment length 35m of end bay.The Cast-in-Situ Segment of 35m length, using traditional
Pier collateral branch frame can not meet to require, it is necessary to set temporary rest pier 1 and coordinate Bailey truss 2 to carry out cast-in-place construction.
Buttress is faced in middle setting in the deep water of bay, it is necessary to which deep water foundation of constructing in advance, cost are very high.High 30~the 50m of pier, wind
Wave is very big, construction period length, and risk factor is high.
The content of the invention
In order to overcome the above-mentioned problems in the prior art at least in part, the present invention provides a kind of continuously firm without bearing
The temporary T structure and its construction method of structure end bay beam section composition.
According to an aspect of the present invention, there is provided a kind of temporary T structure of no bearing continuous rigid frame end bay beam section composition is applied
Work method, including：S1, supporting apparatus is fixed among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Using facing
First end bay Cast-in-Situ Segment described in Shi Gaoqiang screw thread think bar connections and the second end bay Cast-in-Situ Segment, set when concrete strength reaches
Count interim high-strength screw thread bar reinforcement described in intensity post-stretching；S2, it is each using interim cable wire synchronization staged stretched end bay cantilever segment
Stage is to closure segment；S3, successively the permanent web cable wire of Multi-stage prestress, permanent bottom plate cable wire so that the end bay cantilever segment and in
Pier cantilever end bay section is closed up by the closure segment, completes system transform.
Wherein, S3 is specially：Permanent web cable wire described in Multi-stage prestress, the interim high-strength screw thread bar reinforcement is removed, is torn open
Except the tackline in the interim cable wire；Permanent bottom plate cable wire described in Multi-stage prestress, the long rope in the interim cable wire is removed, is completed
System transform.
Wherein, the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment are established by the following method：In shared firm structure pier
The first limb post pier top anchor bar；The reinforcing bar and beam body steel reinforcement cage colligation are integral, and casting concrete completes described the
One end bay Cast-in-Situ Segment；In the pier top anchor bar for the second limb post for sharing firm structure pier；The reinforcing bar and the colligation of beam body steel reinforcement cage into
Overall, casting concrete completes the second end bay Cast-in-Situ Segment.
Wherein, the permanent web cable wire includes the first permanent web cable wire and the second permanent web cable wire；Wherein,
One end of the first permanent web cable wire is connected with the cable wire of middle pier cantilever end bay section by connector, and the other end passes through described
The reserving hole channel of first end bay Cast-in-Situ Segment is passed to web stretching notch；One end of the second permanent web cable wire hangs with middle pier
The cable wire of arm end bay section is connected by connector, and the other end is passed to web by the reserving hole channel of the second end bay Cast-in-Situ Segment
Stretching notch；Wherein, the described first permanent web cable wire and the second permanent web cable wire are each passed through and are embedded in the side
Across the bellows in cantilever segment.
Wherein, the permanent bottom plate cable wire includes the first permanent bottom plate cable wire and the second permanent bottom plate cable wire；Wherein,
One end of the first permanent bottom plate cable wire is fixed on the bottom plate tooth block of middle pier cantilever end bay section, and the other end passes through first side
Passed across the reserving hole channel of Cast-in-Situ Segment to bottom plate stretching notch；One end of the second permanent bottom plate cable wire is fixed on middle pier cantilever
The bottom plate tooth block of end bay section, the other end are passed to bottom plate stretching notch by the reserving hole channel of the second end bay Cast-in-Situ Segment；Its
In, the first permanent bottom plate cable wire and the second permanent bottom plate cable wire are each passed through and are embedded in the end bay cantilever segment
Bellows.
Wherein, in addition to：The supporting apparatus is removed in integral hoisting；To the permanent web cable wire, permanent bottom plate
The hole path pressure grouting of cable wire, to the interim cable wire and the preformed hole sealing of hole of the interim high-strength screw thread bar reinforcement, complete construction.
According to an aspect of the present invention, there is provided a kind of temporary T structure of no bearing continuous rigid frame end bay beam section composition, bag
Include：Share firm structure pier, the first end bay cantilever segment, the second end bay cantilever segment, the first end bay Cast-in-Situ Segment, the second end bay Cast-in-Situ Segment and
Supporting apparatus；Wherein, the pier top rigid connection of the first end bay Cast-in-Situ Segment and the first limb post for sharing firm structure pier, it is described
The pier top rigid connection of second end bay Cast-in-Situ Segment and the second limb post for sharing firm structure pier；The supporting apparatus is arranged on described
Among first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Interim high-strength screw thread bar reinforcement passes through the supporting apparatus
The through hole of upper setting, to connect the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；The first end bay cantilever segment
With the first end bay Cast-in-Situ Segment rigid connection, the second end bay cantilever segment and the second end bay Cast-in-Situ Segment rigid connection.
Wherein, in addition to：Pier cantilever end bay section in pier cantilever end bay section and second in first；Wherein, first side
Pier cantilever end bay section is connected by closure segment rigid connection in cantilever segment is with described first；The second end bay cantilever segment and described
Pier cantilever end bay section is connected by closure segment rigid connection in two；Wherein, pier cantilever in one end and first of the first permanent web cable wire
The cable wire of end bay section is connected by connector, and the other end passes sequentially through the bellows of the first end bay cantilever segment, described first
The reserving hole channel of end bay Cast-in-Situ Segment is passed to web stretching notch；Pier cantilever side in one end and second of second permanent web cable wire
The cable wire of span is connected by connector, and the other end passes sequentially through the bellows of the second end bay cantilever segment, second side
Passed across the reserving hole channel of Cast-in-Situ Segment to web stretching notch；Pier cantilever during one end of first permanent bottom plate cable wire is fixed on first
The bottom plate tooth block of end bay section, the other end pass sequentially through the bellows of the first end bay cantilever segment, the first end bay Cast-in-Situ Segment
Reserving hole channel pass to web stretching notch；One end of second permanent bottom plate cable wire is fixed on pier cantilever end bay section in second
Bottom plate tooth block, the other end pass sequentially through the bellows of the second end bay cantilever segment, the preformed hole of the second end bay Cast-in-Situ Segment
Road is passed to web stretching notch.
Wherein, it is provided with binder between limb among the first limb post and the second limb post for sharing firm structure pier.
Wherein, the supporting apparatus is prefabricated outer steel shell, the precast concrete of built-in steel skeleton, and top surface is set
There are suspension ring.
Wherein, the bottom for sharing firm structure pier is provided with basis and cushion cap；Wherein, the basis instrument is below earth's surface
In the suitable ground layer of engineering geology；The cushion cap is connected integral on the basis with the basic top；Institute
The bottom for stating shared firm structure pier is arranged on the cushion cap, is rigidly connected with the cushion cap.
Wherein, cross sectional shape is provided with the first limb post and the second limb post as the logical of rectangle or polygon
Hole.
To sum up, the temporary T structure and its construction method of no bearing continuous rigid frame end bay beam section composition provided by the invention, is used
Interim high-strength screw thread bar reinforcement passes through the through hole being arranged on supporting apparatus to connect the first end bay Cast-in-Situ Segment and the second end bay
Cast-in-Situ Segment, when concrete strength reaches design strength post-stretching high-strength screw thread bar reinforcement temporarily；Poured using Hanging Basket cast-in-place cantilever method
End bay cantilever segment is built, using interim cable wire synchronization staged stretched end bay cantilever segment each stage to closure segment；Multi-stage prestress successively
Permanent web cable wire, permanent bottom plate cable wire so that end bay cantilever segment and middle pier cantilever end bay section are closed up by closure segment, complete
System transform.The construction method of the temporary T structure of no bearing continuous rigid frame end bay beam section composition provided by the invention, passes through interim T
It is configured to realize the cantilever pouring construction of long end bay Cast-in-Situ Segment beam body, overcomes traditional temporary rest pier and coordinate Bailey beam support to show
Pour that construction temporary base cost is high, and high pier support risk is big, the shortcomings that long construction period；Good with construction quality, cost is low, applies
The work cycle is short, the advantages that economic benefit and good social benefit, especially has in the high pier continuous rigid frame construction of deep water very strong competing
Strive power.
Brief description of the drawings
Fig. 1 is the structural representation that temporary rest pier coordinates Bailey truss construction in the prior art；
Fig. 2 is the construction of the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of the embodiment of the present invention
The structural representation of firm structure pier construction is shared in method；
Fig. 3 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of another embodiment of the present invention
Construction method in the structural representation of the first end bay Cast-in-Situ Segment and the second end bay cast-in-place section construction；
Fig. 4 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of further embodiment of the present invention
Construction method in end bay cantilever segment construct structural representation；
Fig. 5 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of another embodiment of the invention
Construction method in the structural representation that closes up of end bay cantilever segment and middle pier cantilever end bay section；
Fig. 6 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of another embodiment of the invention
Construction method in system transform structural representation；
Fig. 7 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of another embodiment of the invention
Construction method in system transform structural representation；
Fig. 8 is the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of another embodiment of the invention
Construction method in complete system transform structural representation；
Fig. 9 is the structure of the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of the embodiment of the present invention
Schematic diagram；
Figure 10 is the component of the temporary T structure formed according to a kind of no bearing continuous rigid frame end bay beam section of the embodiment of the present invention
Structural representation.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, to the embodiment of the present invention
In technical scheme be explicitly described, it is clear that described embodiment is part of the embodiment of the present invention, rather than all
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
In one embodiment of the invention, referring to figs. 2 to Figure 10, a kind of no bearing continuous rigid frame end bay beam section composition
The construction method of temporary T structure, including：
S1, supporting apparatus is fixed among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Use interim height
First end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment described in strong screw thread think bar connection, when concrete strength reaches design by force
Spend interim high-strength screw thread bar reinforcement described in post-stretching；
Specifically, set up pier collateral branch frame 11 on cushion cap, the height of pier collateral branch frame 11 and pier top it is highly consistent, will be interim
Support meanss 10 are lifted to the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B centres and fixed；Use interim high-strength screw thread
Bar reinforcement 6 passes through the through hole being arranged on supporting apparatus 10 to connect the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment
1B, when the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B concrete strength, to reach design strength post-stretching temporarily high-strength
Screw thread bar reinforcement 6 so that the first end bay Cast-in-Situ Segment 1A's and the second end bay Cast-in-Situ Segment 1B anchors to drawing.
S2, using interim cable wire synchronization staged stretched end bay cantilever segment each stage to closure segment；
Preferably, end bay cantilever segment is poured using Hanging Basket cast-in-place cantilever method.
Wherein, Hanging Basket cast-in-place cantilever method refers to setting workbench in bridge pier both sides, evenly paragraph by paragraph to span centre cantilever
Joints cement concrete beam body, and apply prestressed construction method paragraph by paragraph.
Specifically, end bay cantilever segment is poured using Hanging Basket 12, and is hanged using interim cable wire synchronization staged stretched end bay
Arm section each stage is to closure segment；Wherein, end bay cantilever segment includes the first end bay cantilever segment 2A and the second end bay cantilever segment 2B.
Preferably, one end of interim cable wire is connected with the first end bay cantilever segment 1A, the other end of interim cable wire and and second
The 1B connections of end bay cantilever segment.
S3, successively the permanent web cable wire of Multi-stage prestress, permanent bottom plate cable wire so that the end bay cantilever segment and middle pier hang
Arm end bay section is closed up by the closure segment, completes system transform.
Specifically, the first permanent web cable wire of tensioning in batches, then the permanent bottom plate cable wire of tensioning is so as to obtain the end bay cantilever
Section and middle pier cantilever end bay section are closed up by closure segment 3, complete system transform.
A kind of construction method of the temporary T structure of no bearing continuous rigid frame end bay beam section composition is present embodiments provided, will be faced
When support meanss be fixed among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Use interim high-strength screw thread think bar connection
First end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment, when concrete strength reaches design strength post-stretching high-strength screw thread crude steel temporarily
Muscle；Using interim cable wire synchronization staged stretched end bay cantilever segment each stage to closure segment；The permanent web steel of Multi-stage prestress successively
Rope, permanent bottom plate cable wire so that end bay cantilever segment and middle pier cantilever end bay section are closed up by closure segment, complete system transform.This
The construction method for the temporary T structure without bearing continuous rigid frame end bay beam section composition that embodiment provides, is formed by temporary T structure and realized
The cantilever pouring construction of long end bay Cast-in-Situ Segment beam body, overcome traditional temporary rest pier and coordinate the construction of Bailey beam support cast-in-place interim
Foundation cost is high, and high pier support risk is big, the shortcomings that long construction period；Good with construction quality, cost is low, short construction period,
The advantages that economic benefit and good social benefit, especially there is very strong competitiveness in the high pier continuous rigid frame construction of deep water.
In another embodiment of the present invention, on the basis of above-described embodiment, S3 is specially：
Permanent web cable wire described in Multi-stage prestress, the interim high-strength screw thread bar reinforcement 6 is removed, removes the interim cable wire
In tackline 71；
Permanent bottom plate cable wire described in Multi-stage prestress, the long rope 72 in the interim cable wire is removed, completes system transform.
A kind of construction method of the temporary T structure of no bearing continuous rigid frame end bay beam section composition is present embodiments provided, will be multiple
Miscellaneous system transform according to objective law rational and orderly progress, in system conversion process the quality of beam body and deformation obtain preferably
Control, while the construction risk put is reduced to minimum, solves interim steel rope internal force turn in system conversion process well
Uneven phenomenon is changed, improves the utilization rate of permanent web cable wire and permanent bottom plate cable wire, there is good promotional value.
In another embodiment of the present invention, on the basis of above-described embodiment, the first end bay Cast-in-Situ Segment and
Two end bay Cast-in-Situ Segments are established by the following method：
In the pier top anchor bar for the first limb post for sharing firm structure pier；The reinforcing bar and beam body steel reinforcement cage colligation are integral,
Casting concrete completes the first end bay Cast-in-Situ Segment；
In the pier top anchor bar for the second limb post for sharing firm structure pier；The reinforcing bar and beam body steel reinforcement cage colligation are integral,
Casting concrete completes the second end bay Cast-in-Situ Segment.
Specifically, in the pier top anchor bar for the first limb post for sharing firm structure pier 5；Reinforcing bar and the colligation of beam body steel reinforcement cage are into whole
Body, casting concrete complete the first end bay Cast-in-Situ Segment 1A；
In the pier top anchor bar for the second limb post for sharing firm structure pier 5；Reinforcing bar and beam body steel reinforcement cage colligation are integral, pour
Concrete completes the second end bay Cast-in-Situ Segment 1B.
Preferably, it is reserved with duct in the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B.
In yet another embodiment of the present invention, on the basis of above-described embodiment, the permanent web cable wire includes the
One permanent web cable wire 81 and the second permanent web cable wire 82；Wherein,
One end of the first permanent web cable wire 81 is connected with the cable wire of middle pier cantilever end bay section by connector, another
End is passed to web stretching notch by the reserving hole channel of the first end bay Cast-in-Situ Segment 1A；
One end of the second permanent web cable wire 82 is connected with the cable wire of middle pier cantilever end bay section by connector, another
End is passed to web stretching notch by the reserving hole channel of the second end bay Cast-in-Situ Segment 1B；Wherein,
The first permanent web cable wire 81 and the second permanent web cable wire 82 are each passed through and are embedded in the end bay
Bellows in cantilever segment.
Preferably, pier cantilever end bay section 4B in pier cantilever end bay section 4A and second during middle pier cantilever end bay section includes first.
Specifically, pier cantilever end bay section 4A cable wire passes through connector in one end and first of the first permanent web cable wire 81
Connection, the other end pass sequentially through the bellows of the first end bay cantilever segment 2A, the preformed hole of the first end bay Cast-in-Situ Segment 1A
Road is passed to web stretching notch；
One end of second permanent web cable wire 82 is connected with the cable wire of pier cantilever end bay section 4B in second by connector, separately
One end passes sequentially through the bellows of the second end bay cantilever segment 2B, the reserving hole channel of the second end bay Cast-in-Situ Segment 1B pass to
Web stretching notch.
In another embodiment of the invention, on the basis of above-described embodiment, the permanent bottom plate cable wire includes first
Permanent bottom plate cable wire 91 and the second permanent bottom plate cable wire 92；Wherein,
One end of the first permanent bottom plate cable wire 91 is fixed on the bottom plate tooth block of middle pier cantilever end bay section, and the other end passes through
The reserving hole channel of the first end bay Cast-in-Situ Segment 1A is passed to bottom plate stretching notch；
One end of the second permanent bottom plate cable wire 92 is fixed on the bottom plate tooth block of middle pier cantilever end bay section, and the other end passes through
The reserving hole channel of the second end bay Cast-in-Situ Segment 1B is passed to bottom plate stretching notch；Wherein,
The first permanent bottom plate cable wire 91 and the second permanent bottom plate cable wire 92 are each passed through and are embedded in the end bay
Bellows in cantilever segment.
Specifically, one end of the first permanent bottom plate cable wire 91 is fixed on the bottom plate tooth block of pier cantilever end bay section 4A in first,
The other end passes sequentially through the bellows of the first end bay cantilever segment 2A, the reserving hole channel of the first end bay Cast-in-Situ Segment 1A passes
To bottom plate stretching notch；
One end of second permanent bottom plate cable wire 92 is fixed on the bottom plate tooth block of pier cantilever end bay section in second, and the other end is successively
Passed by the reserving hole channel of the bellows of the second end bay cantilever segment 2B, the second end bay Cast-in-Situ Segment 1B to bottom plate tensioning
Notch.
Wherein, the first end bay Cast-in-Situ Segment 1A one end is provided with web stretching notch and bottom plate stretching notch；Wherein, web
Stretching notch and bottom plate stretching notch are relative with supporting apparatus 10 respectively.The depth of web stretching notch and bottom plate stretching notch
The vacancy section of supporting apparatus 10 at degree 30cm~50cm, with beam seam is by constituting width 80cm~100cm tensioning
Rear enclosed is completed in working space, construction.
Wherein, the second end bay Cast-in-Situ Segment 1B one end is provided with web stretching notch and bottom plate stretching notch；Wherein, web
Stretching notch and bottom plate stretching notch are relative with supporting apparatus 10 respectively.The depth of web stretching notch and bottom plate stretching notch
The vacancy section of supporting apparatus 10 at degree 30cm~50cm, with beam seam is by constituting width 80cm~100cm tensioning
Rear enclosed is completed in working space, construction.
In another embodiment of the invention, on the basis of above-described embodiment, in addition to：Integral hoisting is faced described in removing
When support meanss；
To the permanent web cable wire, the hole path pressure grouting of permanent bottom plate cable wire, to the interim cable wire and the interim height
The preformed hole sealing of hole of strong screw thread bar reinforcement, completes construction.
Specifically, to the first permanent web cable wire 81, the second permanent web after integral hoisting dismounting supporting apparatus 10
The hole path pressure grouting of cable wire 82, the first permanent 91 and second permanent bottom plate cable wire 92 of bottom plate cable wire, to interim cable wire and interim height
The preformed hole sealing of hole of strong screw thread bar reinforcement 6, completes construction.
In one embodiment of the invention, with reference to figure 9 and Figure 10, a kind of no bearing continuous rigid frame end bay beam section composition
Temporary T structure, including：Share firm structure pier 5, the first end bay cantilever segment 2A, the second end bay cantilever segment 2B, the first end bay Cast-in-Situ Segment 1A,
Second end bay Cast-in-Situ Segment 1B and supporting apparatus 10；Wherein,
The first end bay Cast-in-Situ Segment 1A and the first limb post for sharing firm structure pier 5 pier top rigid connection, second side
Across Cast-in-Situ Segment 1B and the second limb post for sharing firm structure pier 5 pier top rigid connection；
The supporting apparatus 10 is arranged in the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B
Between；
Interim high-strength screw thread bar reinforcement 6 passes through the through hole set on the supporting apparatus 10, to connect described first
End bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B；
The first end bay cantilever segment 2A and the first end bay Cast-in-Situ Segment 1A rigid connections, the second end bay cantilever segment 2B and
The second end bay Cast-in-Situ Segment 1B rigid connections.
Preferably, pier collateral branch frame 11 is set up on cushion cap to pier top, supporting apparatus 10 is lifted to the first end bay and showed
Pour among section 1A and the second end bay Cast-in-Situ Segment 1B and fixed, the thickness of supporting apparatus 10 is the first end bay Cast-in-Situ Segment 1A and the
Width among two end bay Cast-in-Situ Segment 1B；Supporting apparatus 10 and both sides the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment
Releasing agent is scribbled on 1B contact surface.
Preferably, there are more interim high-strength screw thread bar reinforcements 6 multiple logical through what is set on the supporting apparatus 10
Hole, to connect the first end bay Cast-in-Situ Segment 1A and the second end bay Cast-in-Situ Segment 1B.
Wherein, the first end bay cantilever segment 2A and the second end bay cantilever segment 2B are poured using Hanging Basket cast-in-place cantilever method.
Wherein, Hanging Basket cast-in-place cantilever method refers to setting workbench in bridge pier both sides, evenly paragraph by paragraph to span centre cantilever
Joints cement concrete beam body, and apply prestressed construction method paragraph by paragraph.
Specifically, the first end bay cantilever segment 2A and the second end bay cantilever segment 2B are poured using Hanging Basket 12, using interim cable wire
In tackline 71 and interim cable wire in synchronous staged stretched the first end bay cantilever segment 2A of long rope 72 and the second end bay cantilever segment
2B each stages are to closure segment 3；
Present embodiments provide a kind of temporary T structure of no bearing continuous rigid frame end bay beam section composition, the first end bay Cast-in-Situ Segment
It is firm with the pier top rigid connection for the first limb post for sharing firm structure pier, the pier top of second limb post of the second end bay Cast-in-Situ Segment with sharing firm structure pier
Connect；Supporting apparatus is arranged among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Interim high-strength screw thread bar reinforcement is worn
The through hole set on supporting apparatus is crossed, to connect the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；First end bay cantilever
Section and the first end bay Cast-in-Situ Segment rigid connection, the second end bay cantilever segment and the second end bay Cast-in-Situ Segment rigid connection.The present embodiment provide without branch
The temporary T structure of seat continuous rigid frame end bay beam section composition, the cantilever that long end bay Cast-in-Situ Segment beam body is realized by temporary T structure formation pour
Construction to be built, traditional temporary rest pier is overcome and coordinates Bailey beam support cast-in-place construction temporary base cost height, high pier support risk is big,
The shortcomings that long construction period；Good with construction quality, cost is low, short construction period, the advantages that economic benefit and good social benefit,
Especially there is very strong competitiveness in the high pier continuous rigid frame construction of deep water.
In another embodiment of the invention, on the basis of above-described embodiment, in addition to：Pier cantilever end bay section in first
Pier cantilever end bay section 4B in 4A and second；Wherein,
The first end bay cantilever segment 2A is connected with pier cantilever end bay section 4A in described first by the rigid connection of closure segment 3；
The second end bay cantilever segment 4B is connected with pier cantilever end bay section 2B in described second by the rigid connection of closure segment 3；Its
In,
One end of first permanent web cable wire 81 is connected with the cable wire of pier cantilever end bay section 4A in first by connector, separately
One end passes sequentially through the bellows of the first end bay cantilever segment 2A, the reserving hole channel of the first end bay Cast-in-Situ Segment 1A pass to
Web stretching notch；
One end of second permanent web cable wire 82 is connected with the cable wire of pier cantilever end bay section 4B in second by connector, separately
One end passes sequentially through the bellows of the second end bay cantilever segment 2B, the reserving hole channel of the second end bay Cast-in-Situ Segment 1B pass to
Web stretching notch；
One end of first permanent bottom plate cable wire 91 is fixed on the bottom plate tooth block of pier cantilever end bay section 4A in first, the other end according to
It is secondary to be passed by the bellows of the first end bay cantilever segment 2A, the reserving hole channel of the first end bay Cast-in-Situ Segment 1A to web
Kerve mouth；
One end of second permanent bottom plate cable wire 92 is fixed on the bottom plate tooth block of pier cantilever end bay section 4B in second, the other end according to
It is secondary to be passed by the bellows of the second end bay cantilever segment 2B, the reserving hole channel of the second end bay Cast-in-Situ Segment 1B to web
Kerve mouth.
Wherein, the first end bay Cast-in-Situ Segment 1A one end is provided with web stretching notch and bottom plate stretching notch；Wherein, web
Stretching notch and bottom plate stretching notch are relative with supporting apparatus 10 respectively.The depth of web stretching notch and bottom plate stretching notch
The vacancy section of supporting apparatus at degree 30cm~50cm, with beam seam is by constituting width 80cm~100cm tensioning work
Make space, rear enclosed is completed in construction.
Wherein, the second end bay Cast-in-Situ Segment 1B one end is provided with web stretching notch and bottom plate stretching notch；Wherein, web
Stretching notch and bottom plate stretching notch are relative with supporting apparatus 10 respectively.The depth of web stretching notch and bottom plate stretching notch
The vacancy section of supporting apparatus at degree 30cm~50cm, with beam seam is by constituting width 80cm~100cm tensioning work
Make space, rear enclosed is completed in construction.
In another embodiment of the invention, on the basis of above-described embodiment, the first limb post for sharing firm structure pier 5
And second be provided with binder between limb among limb post.
Specifically, the cross sectional shape for sharing the lower semisection of firm structure pier 5 is divided into two limb posts for circle, upper semisection, lower semisection
Cross sectional shape improves impact resistance to be circular, also reduces the resistance to current.
Preferably, when shared firm structure pier 5 is higher, binder between limb is set in the middle part of the first limb post and the second limb post, by two limbs
Post connects, and improves the stability of bridge pier.
In another embodiment of the invention, on the basis of above-described embodiment, the supporting apparatus 10 is prefabricated
Outer steel shell, the precast concrete of built-in steel skeleton, top surface are provided with suspension ring.
Specifically, supporting apparatus 10 is prefabricated outer steel shell, the precast concrete of built-in steel skeleton, temporary support
The top surface of device 10 is provided with suspension ring, facilitates live integral hoisting and overall pulling down.
In another embodiment of the invention, on the basis of above-described embodiment, the bottom installation for sharing firm structure pier 5
There are basis and cushion cap；Wherein,
The basis instrument is in the ground layer that the following engineering geology of earth's surface is adapted to；
The cushion cap is connected integral on the basis with the basic top；
The bottom for sharing firm structure pier 5 is arranged on the cushion cap, is rigidly connected with the cushion cap.
A kind of temporary T structure of no bearing continuous rigid frame end bay beam section composition is present embodiments provided, shares the bottom of firm structure pier
Portion is provided with basis and cushion cap, improves the security of temporary T structure.
In another embodiment of the invention, on the basis of above-described embodiment, the first limb post and second limb
Cross sectional shape is provided with post as rectangle or the through hole of polygon.
Present embodiments provide a kind of temporary T structure of no bearing continuous rigid frame end bay beam section composition, the first limb post and second
On limb post on be provided with through hole of the cross sectional shape for rectangle or polygon, save concrete amount.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
- A kind of 1. construction method of the temporary T structure of no bearing continuous rigid frame end bay beam section composition, it is characterised in that including：S1, supporting apparatus is fixed among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Use interim high-strength spiral shell First end bay Cast-in-Situ Segment described in line think bar connection and the second end bay Cast-in-Situ Segment, after concrete strength reaches design strength Interim high-strength screw thread bar reinforcement described in tensioning；S2, using interim cable wire synchronization staged stretched end bay cantilever segment each stage to closure segment；S3, the permanent web cable wire of Multi-stage prestress, permanent bottom plate cable wire are so as to obtain the end bay cantilever segment and middle pier cantilever side successively Span is closed up by the closure segment, completes system transform.
- 2. construction method according to claim 1, it is characterised in that S3 is specially：Permanent web cable wire described in Multi-stage prestress, the interim high-strength screw thread bar reinforcement is removed, removed in the interim cable wire Tackline；Permanent bottom plate cable wire described in Multi-stage prestress, the long rope in the interim cable wire is removed, completes system transform.
- 3. construction method according to claim 1, it is characterised in that the first end bay Cast-in-Situ Segment and the second end bay are cast-in-place Section is established by the following method：In the pier top anchor bar for the first limb post for sharing firm structure pier；The reinforcing bar and beam body steel reinforcement cage colligation are integral, pour Concrete completes the first end bay Cast-in-Situ Segment；In the pier top anchor bar for the second limb post for sharing firm structure pier；The reinforcing bar and beam body steel reinforcement cage colligation are integral, pour Concrete completes the second end bay Cast-in-Situ Segment.
- 4. construction method according to claim 1, it is characterised in that the permanent web cable wire includes the first permanent web Cable wire and the second permanent web cable wire；Wherein,One end of the first permanent web cable wire is connected with the cable wire of middle pier cantilever end bay section by connector, and the other end passes through The reserving hole channel of the first end bay Cast-in-Situ Segment is passed to web stretching notch；One end of the second permanent web cable wire is connected with the cable wire of middle pier cantilever end bay section by connector, and the other end passes through The reserving hole channel of the second end bay Cast-in-Situ Segment is passed to web stretching notch；Wherein,The first permanent web cable wire and the second permanent web cable wire are each passed through and are embedded in the end bay cantilever segment Bellows.
- 5. construction method according to claim 1, it is characterised in that the permanent bottom plate cable wire includes the first permanent bottom plate Cable wire and the second permanent bottom plate cable wire；Wherein,One end of the first permanent bottom plate cable wire is fixed on the bottom plate tooth block of middle pier cantilever end bay section, and the other end passes through described The reserving hole channel of one end bay Cast-in-Situ Segment is passed to bottom plate stretching notch；One end of the second permanent bottom plate cable wire is fixed on the bottom plate tooth block of middle pier cantilever end bay section, and the other end passes through described The reserving hole channel of two end bay Cast-in-Situ Segments is passed to bottom plate stretching notch；Wherein,The first permanent bottom plate cable wire and the second permanent bottom plate cable wire are each passed through and are embedded in the end bay cantilever segment Bellows.
- 6. construction method according to claim 1, it is characterised in that also include：The supporting apparatus is removed in integral hoisting；To the permanent web cable wire, the hole path pressure grouting of permanent bottom plate cable wire, to the interim cable wire and the interim high-strength spiral shell The preformed hole sealing of hole of line bar reinforcement, complete construction.
- A kind of 7. temporary T structure of no bearing continuous rigid frame end bay beam section composition, it is characterised in that including：Share firm structure pier, first End bay cantilever segment, the second end bay cantilever segment, the first end bay Cast-in-Situ Segment, the second end bay Cast-in-Situ Segment and supporting apparatus；Wherein,The pier top rigid connection of the first end bay Cast-in-Situ Segment and the first limb post for sharing firm structure pier, the second end bay Cast-in-Situ Segment With the pier top rigid connection of the second limb post for sharing firm structure pier；The supporting apparatus is arranged among the first end bay Cast-in-Situ Segment and the second end bay Cast-in-Situ Segment；Interim high-strength screw thread bar reinforcement passes through the through hole set on the supporting apparatus, cast-in-place to connect first end bay Section and the second end bay Cast-in-Situ Segment；The first end bay cantilever segment and the first end bay Cast-in-Situ Segment rigid connection, the second end bay cantilever segment and second side Across Cast-in-Situ Segment rigid connection.
- 8. temporary T structure according to claim 7, it is characterised in that also include：Pier cantilever end bay section and second in first Middle pier cantilever end bay section；Wherein,The first end bay cantilever segment is connected with pier cantilever end bay section in described first by closure segment rigid connection；The second end bay cantilever segment is connected with pier cantilever end bay section in described second by closure segment rigid connection；Wherein,One end of first permanent web cable wire is connected with the cable wire of pier cantilever end bay section in first by connector, and the other end is successively Passed by the reserving hole channel of the bellows of the first end bay cantilever segment, the first end bay Cast-in-Situ Segment to web tension slot groove Mouthful；One end of second permanent web cable wire is connected with the cable wire of pier cantilever end bay section in second by connector, and the other end is successively Passed by the reserving hole channel of the bellows of the second end bay cantilever segment, the second end bay Cast-in-Situ Segment to web tension slot groove Mouthful；One end of first permanent bottom plate cable wire is fixed on the bottom plate tooth block of pier cantilever end bay section in first, and the other end passes sequentially through institute State the bellows of the first end bay cantilever segment, the reserving hole channel of the first end bay Cast-in-Situ Segment is passed to web stretching notch；One end of second permanent bottom plate cable wire is fixed on the bottom plate tooth block of pier cantilever end bay section in second, and the other end passes sequentially through institute State the bellows of the second end bay cantilever segment, the reserving hole channel of the second end bay Cast-in-Situ Segment is passed to web stretching notch.
- 9. temporary T structure according to claim 7, it is characterised in that the first limb post and the second limb for sharing firm structure pier Binder between limb is provided among post.
- 10. temporary T structure according to claim 7, it is characterised in that the supporting apparatus is prefabricated outer steel shell, interior The precast concrete of steel skeleton is put, top surface is provided with suspension ring.
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| CN201711013525.9A CN107724244B (en) | 2017-10-26 | 2017-10-26 | Temporary T-shaped structure formed by bridge sections of continuous rigid frame edges without support and construction method of temporary T-shaped structure |
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