CN109680604A - A kind of Precast T-Beam expansion joint end construction and construction method - Google Patents
A kind of Precast T-Beam expansion joint end construction and construction method Download PDFInfo
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- CN109680604A CN109680604A CN201910054587.7A CN201910054587A CN109680604A CN 109680604 A CN109680604 A CN 109680604A CN 201910054587 A CN201910054587 A CN 201910054587A CN 109680604 A CN109680604 A CN 109680604A
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- expansion joint
- anchor rib
- precast
- cast
- buried anchor
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- 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
Abstract
The present invention relates to a kind of Precast T-Beam expansion joint end construction and construction methods.When T is beam prefabricated, T beam end embedded ribs in expansion joint side, after T erection is in place, the pre-buried anchor rib Cast-in-Situ Segment reinforcing bar in binding expansion joint simultaneously welds with it the pre-buried anchor rib in expansion joint integral, the cast-in-place section concrete of the pre-buried anchor rib in expansion joint is poured, component lifting in expansion joint is in place after reaching 80% or more concrete design strength, and the pre-buried anchor rib in expansion joint and the welding of expansion joint component anchor rib is integral, assembling reinforcement, then at expansion joint, component Cast-in-Situ Segment pours C50 steel fibre water-proof concrete.The present invention solves the pre-buried anchor rib of T beam end and is difficult to match with expansion joint anchor assemblies anchor rib on lateral position and height, effective welding can not be formed, the problems such as Late reformation project amount is larger improves the installation quality at expansion joint, saves installation period, reduces installation cost.
Description
Technical field
The invention belongs to technical field of civil, are related specifically to a kind of Precast T-Beam expansion joint end construction and construction party
Method.
Background technique
Simply supported-to-continuous system obtains increasingly extensive application in nowadays large-scale bridge construction.With a large amount of mountains
Area's expressway construction, due to being restricted by landform, more and more simply supported-to-continuous system bridges are all located at horizontal curve section.First
Continuous system bridge is all made of standardized precast beam piece after freely-supported, and precast beam piece is prefabricated in beam field, then sets up in place.Horizontal curve
It when beam prefabricated, is influenced to lead to the beam prefabricated length dimension of T not exclusively by radius of horizontal curve, and divides connection pier after setting up in place
Place's T beam end is distributed at broken line in the plane, since the expansion joint embedded ribs of every T beam are longitudinally parallel with piece T beam, is caused
It sets up the rear same expansion joint embedded ribs across between each T beam in place to be also distributed at broken line in the plane, along with unit in charge of construction is fixed
Position error etc. influences, and often leads to embedded ribs and is difficult to match with expansion joint anchor assemblies anchor rib on lateral position and height,
Effective welding can not be formed, Late reformation project amount is larger.According to investigations, numerous " simple-supported thencontinuous " in-service prestressed concretes
In native Curved Beam Bridge, concrete is damaged at expansion joint, and the diseases such as driving irregularity are more serious, and it is comfortable that this kind of disease reduces driving
Property, accelerate expansion joint damage, accelerates T beam-ends head damaged.Therefore, the reason of deeply seeking this kind of disease, and carried out for the cause of disease
The end neotectonics of Precast T-Beam expansion joint and the adjustment of construction method are very necessary.
Currently, Precast T-Beam expansion joint end construction and construction are all made of such as under type: when T is beam prefabricated, point connection of each T beam
The reserved expansion joint installation notch in end are held, and synchronize pre-buried expansion joint installation anchor rib.Using the T beam which is prefabricated
After setting up in place, since bridge location plane curve is linear, site operation deviating cause causes each T beam end to reserve notch Duan Ping
Face is distributed in broken line, and is linearly distributed on the component planes of expansion joint, causes the anchor rib of expansion joint component and T beam end reserved
Embedded ribs in notch, which form dislocation, influences the in place of expansion joint component, and the embedded ribs for reserving notch to T beam end is needed to carry out
Secondary transformation is so that the two can form effective welding.It is secondary since the exposed size of embedded ribs in the reserved notch of T beam end is shorter
It is larger to process transformation difficulty, and is easy that concrete is caused to damage.Obviously, prior art Precast T-Beam expansion joint end constructs and applies
Work method reserves the anchor rib spatial position mismatch of the embedded ribs and expansion joint component in notch there is T beam end, needs two
The problems such as secondary processing is transformed, larger there are time-consuming and transformation difficulty.
Summary of the invention
There are embedded ribs in the construction process to solve prior art Precast T-Beam expansion joint end construction and construction method and stretch
Contracting seam component anchor rib mismatches on lateral position and height, and the two can not form effective welding, influences expansion joint component peace
The problems such as packing quality, the invention proposes a kind of Precast T-Beam expansion joint end construction and construction methods.
Precast T-Beam expansion joint of the present invention end construction, including, T beam end embedded ribs, the pre-buried anchor rib in expansion joint, expansion joint
Pre-buried anchor rib Cast-in-Situ Segment, C50 steel fibre water-proof concrete, expansion joint component Cast-in-Situ Segment, in which: when beam prefabricated, pre-buried end
Longitudinal short muscle and the welding of T beam tendons skeleton are integral；The pre-buried anchor rib in expansion joint uses door rebar.
Further, the T beam end embedded ribs quantity and position are advised according to bulk, force request and general technology
Model, which calculates, to be determined.
Further, after the T erection is in place, the vertically and horizontally muscle of the pre-buried anchor rib Cast-in-Situ Segment in expansion joint, stirrup quantity
It is determined with position according to bulk, force request and general technology proper calculation.
Further, the vertically and horizontally muscle of the pre-buried anchor rib Cast-in-Situ Segment in the expansion joint, stirrup, the pre-buried anchor rib in expansion joint and
The welding of T beam end embedded ribs is integral.
Further, the pre-buried anchor rib spacing in the expansion joint, mounting height are according to the constructions of expansion joint fastener inserts, peace
Space requirement is filled to determine.
Precast T-Beam expansion joint of the present invention end construction method constructs construction party using Precast T-Beam expansion joint of the present invention end
Method, comprising the following steps:
S1, Precast T-Beam, T beam end embedded ribs and the welding of T beam tendons skeleton are integral；
The maintenance of S2, T beam, reaches tensioning requirement post-stretching sagging moment prestressed strand in concrete strength, and anchor, ripple
Pipe slip casting；
S3, T beam, cast-in-place T beam diaphragm plate and wing plate longitudinal wet joint are set up；
S4, continuous pier pier top wet joint is poured, after concrete strength reaches design requirement, carries out negative moment area and answer in advance
Power steel beam lashing and stretch-draw anchor, bellows slip casting；
S5, whole temporary supports are removed, realizes system transform；
S6, anticollision barrier is poured, bridge floor leveling layer of mating formation；
S7, the pre-buried anchor rib Cast-in-Situ Segment reinforcing bar in installation expansion joint, the pre-buried anchor rib in expansion joint, and with T beam end embedded ribs
It welds integral, pours the cast-in-place section concrete of the pre-buried anchor rib in expansion joint；
S8, installation expansion joint component weld the pre-buried anchor rib of expansion joint component anchor rib and expansion joint, and binding is vertically and horizontally
Reinforcing bar, stirrup pour C50 steel fibre water-proof concrete.
The beneficial effect of Precast T-Beam expansion joint of the present invention end construction and construction method is that efficiently solve T beam end pre-buried
Anchor rib is difficult to match with expansion joint anchor assemblies anchor rib on lateral position and height, can not form effective welding, after
The problems such as phase improvement project amount is larger improves the installation quality at expansion joint, saves installation period, reduces installation cost, improve
The service life and road-ability at expansion joint.
Detailed description of the invention
Attached drawing 1 is vertical section schematic diagram of the Precast T-Beam expansion joint of the present invention end construction in prefabrication phase；
Attached drawing 2 is that Precast T-Beam expansion joint of the present invention end constructs the vertical profile after the pre-buried anchor rib Cast-in-Situ Segment in expansion joint pours
Face schematic diagram；
Attached drawing 3 is that Precast T-Beam expansion joint of the present invention end constructs the vertical section schematic diagram after expansion joint is in place；
Attached drawing 4 is vertical section signal of the Precast T-Beam expansion joint of the present invention end construction after expansion joint component Cast-in-Situ Segment pours
Figure.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, below with reference to embodiment to the present invention
A kind of Precast T-Beam expansion joint end construction and construction method provided is described in detail.Following embodiment is merely to illustrate this hair
Bright range and is not intended to limit the present invention.
Embodiment
Attached drawing 1 is Precast T-Beam expansion joint of the present invention end construction in the vertical section schematic diagram of prefabrication phase, and attached drawing 2 is this hair
Bright Precast T-Beam expansion joint end constructs the vertical section schematic diagram after the pre-buried anchor rib Cast-in-Situ Segment in expansion joint pours, and attached drawing 3 is this hair
Bright Precast T-Beam expansion joint end constructs the vertical section schematic diagram after expansion joint is in place.In figure, 1 is Precast T-Beam, and 2 is pre- for expansion joint
Anchor rib Cast-in-Situ Segment is buried, 4 be T beam end embedded ribs, and 5 be the pre-buried anchor rib in expansion joint, and 6 be transverse steel, and 7 be deck paving
Layer, 8 be expansion joint component, and 9 be expansion joint component anchor rib.In order to improve the mechanical property of embedded ribs, the pre-buried anchoring in expansion joint
Muscle 5 uses door rebar.Attached drawing 4 is that Precast T-Beam expansion joint of the present invention end constructs the vertical profile after expansion joint component Cast-in-Situ Segment pours
Face schematic diagram, 3 be expansion joint component Cast-in-Situ Segment.Expansion joint end prevents faying face attached to resist the huge impact force of wheel
Nearly infiltration, expansion joint component Cast-in-Situ Segment are poured using C50 steel fibre water-proof concrete.
Precast T-Beam expansion joint of the present invention end construction method is constructed using Precast T-Beam expansion joint of the present invention end, including
Following steps:
S1, Precast T-Beam, T beam end web widened section is asynchronous prefabricated, T beam end embedded ribs and the processing of T beam reinforcement cages
It is integral；
The maintenance of S2, T beam, reaches tensioning requirement post-stretching sagging moment prestressed strand in concrete strength, and anchor, ripple
Pipe slip casting；
S3, T beam, cast-in-place T beam diaphragm plate and wing plate longitudinal wet joint are set up；
S4, continuous pier pier top wet joint is poured, after concrete strength reaches design requirement, carries out negative moment area and answer in advance
Power steel beam lashing and stretch-draw anchor, bellows slip casting；
S5, whole temporary supports are removed, realizes system transform；
S6, anticollision barrier is poured, bridge floor leveling layer of mating formation；
S7, the pre-buried anchor rib Cast-in-Situ Segment reinforcing bar in installation expansion joint, the pre-buried anchor rib in expansion joint, and with T beam end embedded ribs
It welds integral, pours the cast-in-place section concrete of the pre-buried anchor rib in expansion joint；
S8, installation expansion joint component weld the pre-buried anchor rib of expansion joint component anchor rib and expansion joint, and binding is vertically and horizontally
Reinforcing bar, stirrup pour C50 steel fibre water-proof concrete.
Precast T-Beam expansion joint of the present invention end construction and construction method are in T beam end setting post-cast strip, by the pre-buried anchor in expansion joint
Gu muscle is installed in Cast-in-Situ Segment, the anchor rib sky of embedded ribs and expansion joint component that T beam end is reserved in notch can be effectively solved
Between position mismatch, need secondary operation to be transformed, there is a problem of that time-consuming and transformation difficulty is larger, give full play to this structure
Inherent advantage, overcome existing weakness, improve installation quality, road-ability and the service life of expansion joint component.
The method have the benefit that the expansion joint construction quality problem positioned at curved section T beam bridge is efficiently solved,
After i.e. Precast T-Beam is set up in place, since the influence of horizontal curve causes angle between each T beam different, and conventional telescopic seam embedded ribs
It is parallel and synchronous prefabricated with precast beam body axis, cause expansion joint embedded ribs to cause T beam end to reserve in notch towards different
The anchor rib spatial position of embedded ribs and expansion joint component mismatches, and secondary operation is needed to be transformed, and there are time-consuming and transformation is difficult
Larger problem is spent, cast-in-place concrete good integrity, beauty are given full play to, convenient for the Inherent advantage that reinforcement location is adjusted, is improved
The installation quality at expansion joint, road-ability and service life.
Example of the invention is explained in detail above in conjunction with embodiment, but the present invention is not limited to examples detailed above,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention
Various change also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of Precast T-Beam expansion joint end constructs, which is characterized in that T beam end embedded ribs, stretch the pre-buried anchor rib in expansion joint
Stitch pre-buried anchor rib Cast-in-Situ Segment, C50 steel fibre water-proof concrete, expansion joint component Cast-in-Situ Segment, in which: when beam prefabricated, pre-buried end
Longitudinally short muscle and the welding of T beam tendons skeleton are integral in portion；The pre-buried anchor rib in expansion joint uses door rebar.
2. Precast T-Beam expansion joint according to claim 1 end constructs, which is characterized in that the T beam end embedded ribs quantity
It is determined with position according to bulk, force request and general technology proper calculation.
3. Precast T-Beam expansion joint according to claim 2 end constructs, which is characterized in that after the T erection is in place, stretch
Contracting stitches vertically and horizontally muscle, stirrup quantity and the position of pre-buried anchor rib Cast-in-Situ Segment according to bulk, force request and general technology
Proper calculation determines.
4. Precast T-Beam expansion joint according to claim 3 end constructs, which is characterized in that the pre-buried anchor rib in expansion joint
The vertically and horizontally muscle of Cast-in-Situ Segment, stirrup, the pre-buried anchor rib in expansion joint and the welding of T beam end embedded ribs are integral.
5. Precast T-Beam expansion joint according to claim 4 end constructs, which is characterized in that the pre-buried anchor rib in expansion joint
Spacing, mounting height are determined according to the construction of expansion joint fastener inserts, requirements of installation space.
6. a kind of Precast T-Beam expansion joint end construction method, any one Precast T-Beam expansion joint end structure in use 1 to 5
Make construction method, comprising the following steps:
S1, Precast T-Beam, T beam end embedded ribs and the welding of T beam tendons skeleton are integral；
The maintenance of S2, T beam, reaches tensioning requirement post-stretching sagging moment prestressed strand in concrete strength, and anchor, bellows note
Slurry；
S3, T beam, cast-in-place T beam diaphragm plate and wing plate longitudinal wet joint are set up；
S4, continuous pier pier top wet joint is poured, after concrete strength reaches design requirement, carries out negative moment area prestress steel
Beam lashing and stretch-draw anchor, bellows slip casting；
S5, whole temporary supports are removed, realizes system transform；
S6, anticollision barrier is poured, bridge floor leveling layer of mating formation；
S7, the pre-buried anchor rib Cast-in-Situ Segment reinforcing bar in installation expansion joint, the pre-buried anchor rib in expansion joint, and welded with T beam end embedded ribs
It is integral, pour the cast-in-place section concrete of the pre-buried anchor rib in expansion joint；
The pre-buried anchor rib of expansion joint component anchor rib and expansion joint is welded, binds vertically and horizontally steel by S8, installation expansion joint component
Muscle, stirrup pour C50 steel fibre water-proof concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054587.7A CN109680604B (en) | 2019-01-21 | 2019-01-21 | Prefabricated T-beam telescopic seam end structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054587.7A CN109680604B (en) | 2019-01-21 | 2019-01-21 | Prefabricated T-beam telescopic seam end structure and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN109680604A true CN109680604A (en) | 2019-04-26 |
| CN109680604B CN109680604B (en) | 2020-11-03 |
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| CN201910054587.7A Active CN109680604B (en) | 2019-01-21 | 2019-01-21 | Prefabricated T-beam telescopic seam end structure and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110804949A (en) * | 2019-11-04 | 2020-02-18 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchoring area of expansion joint |
| CN114016412A (en) * | 2021-11-03 | 2022-02-08 | 中交二航局广西建设工程有限公司 | Construction method for integral post-cast cross beam of T-beam expansion joint |
| CN114561869A (en) * | 2022-03-16 | 2022-05-31 | 湖北楚天联发路桥养护有限公司 | Fold line type asynchronous double-prevention expansion joint device |
| CN114753244A (en) * | 2022-03-25 | 2022-07-15 | 江苏平山交通设施有限公司 | Interim permanent components of a whole that can function independently festival section assembled modulus telescoping device that changes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804949A (en) * | 2019-11-04 | 2020-02-18 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchoring area of expansion joint |
| CN114016412A (en) * | 2021-11-03 | 2022-02-08 | 中交二航局广西建设工程有限公司 | Construction method for integral post-cast cross beam of T-beam expansion joint |
| CN114561869A (en) * | 2022-03-16 | 2022-05-31 | 湖北楚天联发路桥养护有限公司 | Fold line type asynchronous double-prevention expansion joint device |
| CN114753244A (en) * | 2022-03-25 | 2022-07-15 | 江苏平山交通设施有限公司 | Interim permanent components of a whole that can function independently festival section assembled modulus telescoping device that changes |
| CN114753244B (en) * | 2022-03-25 | 2024-01-26 | 江苏平山交通设施有限公司 | Temporary-to-permanent split segment assembly type modulus telescoping device |
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| CN109680604B (en) | 2020-11-03 |
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Address after: 030032 No.27, Wuluo street, economic and Technological Park, Xiaodian District, Taiyuan City, Shanxi Province Patentee after: Shanxi Transportation Technology Research and Development Co.,Ltd. Address before: 030032 No.27, Wuluo street, economic and Technological Park, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI TRAFFIC SCIENCES RESEARCH INSTITUTE Co.,Ltd. |