CN211772934U - Zero number block support system of bridge - Google Patents

Zero number block support system of bridge Download PDF

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Publication number
CN211772934U
CN211772934U CN201922024201.6U CN201922024201U CN211772934U CN 211772934 U CN211772934 U CN 211772934U CN 201922024201 U CN201922024201 U CN 201922024201U CN 211772934 U CN211772934 U CN 211772934U
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China
Prior art keywords
steel
bridge
zero
support system
block support
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CN201922024201.6U
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Chinese (zh)
Inventor
谢愉
吴海平
王雪峰
邱徐平
管建军
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Jiangsu Yonglian Jingzhu Construction Group Co ltd
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Jiangsu Yonglian Jingzhu Construction Group Co ltd
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Abstract

The utility model discloses a No. zero piece braced system of bridge, including two upright mounds and intermediate strut parts, upright mound below is the concrete, is equipped with the pier stud directly over the upright mound, and the concrete top is equipped with three rows of steel stands, and the steel stand top sets up the filler beam, and filler beam upper portion sets up the main longitudinal beam, and the crossbeam is arranged in the case roof beam district of longitudinal bridge to, arranges the minor longitudinal beam on the crossbeam, erects the steel pipe support on the minor longitudinal beam, supports the template system, the intermediate strut part is two rows of steel stands, erects interim tie beam and pile foundation below these two rows of steel stands, the utility model discloses the mid portion adopts drilling bored concrete pile basis, and the bearing capacity of tie beam as the support of steel pipe post has been guaranteed on upper portion, has reduced inhomogeneous settlement, and intensity is high, and the wholeness is good. After the support system with few supporting points based on the steel upright posts is adopted, the construction safety coefficient of the 0# block is improved, and a certain amount of steel is saved compared with other support systems.

Description

Zero number block support system of bridge
Technical Field
The utility model belongs to the technical field of the bridge construction, concretely relates to No. zero piece braced system of bridge.
Background
Under the drive of rapid development of domestic economy, high-speed railways and highways also enter a rapid development stage. In order to meet the requirements of various regions, continuous girder bridges across railways, roads, rivers and canyons are gradually increased. Generally, the construction of the continuous beam bridge adopts hanging basket cantilever casting construction, and the construction of a zero number block adopts a bracket. In the construction of the ultra-wide continuous prestressed suspension casting box girder, because the quantity of the 0# block of the bridge is large, and the unit load is carried, the common steel pipe and the bailey truss bracket can not meet the construction requirement.
Disclosure of Invention
In order to solve the problems, the invention discloses a zero block supporting system of a bridge, which has the advantages of large bearing capacity, reduction of uneven settlement, high strength, good integrity and high safety factor.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a No. zero piece braced system of bridge, includes two and founds mounds and middle support part, found the mound below and be the concrete, be equipped with the pier stud directly over founding the mound, the concrete top is equipped with three rows of steel stands, and the steel stand top sets up the filler beam, and filler beam upper portion sets up the main longitudinal beam, and the crossbeam is arranged in the case roof beam district of longitudinal bridge orientation, arranges the minor longitudinal beam on the crossbeam, erects steel pipe support on the minor longitudinal beam, supports the template system, the middle support part divide into two rows of steel stands, and interim tie beam and pile foundation are erect to these two rows of steel stand below.
As an improvement of the utility model, four steel columns are arranged in each row of steel columns.
As an improvement of the utility model, shaped steel, I-steel and channel steel are padded between the transverse beam and the small longitudinal beam in the longitudinal bridge direction.
As an improvement of the utility model, 2 groups of temporary anchoring systems beside the pier are arranged on the edge of each pier, 4 steel upright columns in each group,
as an improvement of the present invention, the steel column has a dimension of 800 × 20 mm.
As an improvement of the utility model, the pad beam is made of 32H-shaped steel, and the main longitudinal beam is made of HM488 section steel.
As an improvement of the utility model, the minor longitudinal girder adopts 25I-steel, interval 90cm evenly distributed.
As an improvement of the utility model, the pile foundation is a bored concrete pile.
As an improvement of the utility model, the diameter of the cast-in-place pile is 80cm, and the length of the pile is 45 m.
As an improvement of the utility model, form the parallel connection with 2 32# channel-section steels between steel stand and the steel stand.
The utility model has the advantages that:
the utility model discloses the mid portion adopts the bored concrete pile basis, and the tie beam is pour on upper portion as the support of steel-pipe column, has guaranteed the bearing capacity of steel pipe support system, has reduced inhomogeneous settlement, and intensity is high, and the wholeness is good. After the support system with few supporting points based on the steel upright posts is adopted, the construction safety coefficient of the 0# block is improved, and a certain amount of steel is saved compared with other support systems.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a sectional view taken along line A-A.
FIG. 3 is a sectional view taken along line B-B.
Reference numerals:
1. the concrete foundation comprises a tower column, 2 parts of small longitudinal beams, 3 parts of main longitudinal beams, 4 parts of main cross beams, 5 parts of parallel connection, 6 parts of tie beams, 7 parts of cast-in-place piles, 8 parts of pad beams, 9 parts of steel upright columns, 10 parts of 25# I-steel, 11 parts of profile steel, 12 parts of concrete enlarged foundations, 13 parts of strip foundations, 14 parts of ballast filling, 15 parts of pier columns, 16 parts of temporary anchoring.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
As shown in the figure, 0# piece construction adopt the support method once only to pour, the support adopts the steel-pipe pile basis, 0# piece segment is pour on the support, single 0# piece support adopts 4 x 8=32 phi 800 x 12 steel stands, forms the parallel connection with 2 32# channel-section steel connections between steel stand and the steel stand, wherein the two rows of steel stands need erect interim tie beam and pile foundation to the middle of the cross bridge. The diameter of the pile foundation is 80cm, and the pile length is 45 m. The top of the steel upright post is provided with 5 pad beams of 32I-steel, and the length of the pad beams is 1.4 m. The upper part of the pad beam is provided with a main longitudinal beam, the length of the main longitudinal beam is 18m, 2 HM488 section steels are combined together, and the part of the solid section is 4 HM488 section steels. The length of the main beam is 48m, and HM488 type steel is adopted. 3-7 cross beams are arranged in a box girder area of 5.1m in the longitudinal bridge direction, small longitudinal beams are arranged on the cross beams, the small longitudinal beams are made of 25I-shaped steel and are uniformly distributed at intervals of 90cm, and steel pipe supports are erected on the small longitudinal beams to support a template system. The bridge deck part template is supported by steel pipe supports, and the steel pipe supports are erected on the small longitudinal beams. The 0# block side main beam, the cross beam and the bridge deck slab template adopt wood glue moulds, the deck slab adopts wood glue boards, and 10cm multiplied by 10cm square wood is used as transverse back ribs; using 10# channel steel as a vertical secondary back rib block; the No. 10 channel steel is spliced to form a transverse back rib.
And after the pier stud is poured, a 0# block support is erected, the steel pipe piles in the range of the main pier bearing platform are fixed on the top surface of the bearing platform through embedded parts, and the steel pipe piles outside the range of the bearing platform adopt reinforced concrete to enlarge the foundation. The bottom of the concrete foundation is a cast-in-situ bored pile with the diameter of 80 cm. And after the tubular pile is installed, welding a distribution beam to lay 488H-shaped steel. After the whole support system is installed, prepressing of the support system is carried out according to the distribution of the load of the main beam and the stress of the structure, the preloading weight is carried out according to 1.2 times of the design weight of the 0# block of the main beam, and the prepressing is completed to set a bottom die pre-lifting value according to the elastic deformation of the support. And then installing the template to carry out 0# block concrete and prestress construction. And (4) performing longitudinal and transverse prestress tensioning after the casting of the No. 0 concrete is completed and the strength is reached. And finally, assembling a hanging basket on the 0# block for subsequent standard segment construction.
The temporary anchoring system of the main beam is a steel pipe concrete support system, steel upright column bases are embedded in the top surfaces of the bearing platforms on the two sides of the main pier, the steel upright columns are steel upright columns with the diameter of 800-20 mm, and C30 concrete is filled in the steel upright columns. 4 pieces of finish rolling deformed steel bars with the diameter of 32mm are arranged in each steel upright post, and the pretension is 10 t. The load balancing device is used for balancing unbalanced loads of the main beams on the two sides in the construction process. Each main pier edge sets up 2 other temporary anchoring systems of mound, 4 steel stand columns of every group, total 32 steel stand columns of full-bridge, 128 finish rolling screw-thread steel.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.

Claims (10)

1. The utility model provides a zero number piece braced system of bridge which characterized in that: including two upright mounds and middle support part, upright mound below is the concrete, is equipped with the pier stud directly over the mound, and the concrete top is equipped with three rows of steel stand, and the steel stand top sets up the filler beam, and filler beam upper portion sets up the main longitudinal beam, and the crossbeam is arranged in the case roof beam district of longitudinal bridge to, arranges the minor longitudinal beam on the crossbeam, erects steel pipe support on the minor longitudinal beam, supports the template system, the middle support part is two rows of steel stand, erects interim tie beam and pile foundation below these two rows of steel stand.
2. The zero-number block support system of a bridge of claim 1, wherein: four steel columns are arranged in each row of steel columns.
3. The zero-number block support system of a bridge of claim 1, wherein: and section steel, I-shaped steel and channel steel are padded between the transverse beam and the small longitudinal beam in the longitudinal bridge direction.
4. The zero-number block support system of a bridge of claim 1, wherein: each pier column edge sets up 2 other temporary anchoring systems of mound, 4 steel stand of every group.
5. The zero-number block support system of a bridge of claim 1, wherein: the size of the steel upright post is 800 x 20 mm.
6. The zero-number block support system of a bridge of claim 1, wherein: the cushion beam is made of 32I-shaped steel, and the main longitudinal beam is made of HM488 type steel.
7. The zero-number block support system of a bridge of claim 1, wherein: the small longitudinal beams are made of 25I-shaped steel and are uniformly distributed at intervals of 90 cm.
8. The zero-number block support system of a bridge of claim 1, wherein: the pile foundation is a cast-in-place pile.
9. The zero-number block support system for a bridge of claim 8, wherein: the diameter of the cast-in-place pile is 80cm, and the pile length is 45 m.
10. The zero-number block support system of a bridge of claim 1, wherein: the steel upright posts are connected with each other by 2 pieces of 32# channel steel to form parallel connection.
CN201922024201.6U 2019-11-21 2019-11-21 Zero number block support system of bridge Active CN211772934U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922024201.6U CN211772934U (en) 2019-11-21 2019-11-21 Zero number block support system of bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922024201.6U CN211772934U (en) 2019-11-21 2019-11-21 Zero number block support system of bridge

Publications (1)

Publication Number Publication Date
CN211772934U true CN211772934U (en) 2020-10-27

Family

ID=72961801

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922024201.6U Active CN211772934U (en) 2019-11-21 2019-11-21 Zero number block support system of bridge

Country Status (1)

Country Link
CN (1) CN211772934U (en)

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