CN201722626U

CN201722626U - Steel-concrete beam stand

Info

Publication number: CN201722626U
Application number: CN2010202498201U
Authority: CN
Inventors: 梁超; 聂江华; 张宏斌; 刘玉波; 李彬; 郭振亮; 刘崇钰; 王选举; 宁明阳
Original assignee: First Engineering Co Ltd of CTCE Group
Current assignee: First Engineering Co Ltd of CTCE Group
Priority date: 2010-07-07
Filing date: 2010-07-07
Publication date: 2011-01-26
Anticipated expiration: 2020-07-07

Abstract

The utility model discloses a steel-concrete beam stand, which adopts a concrete base, and is characterized in that a longitudinal beam with a steel structure is arranged on the concrete base along the length direction of a prefab box girder. By virtue of a steel-concrete structure, the template consumption is reduced, the assembly structural style simplifies the production process greatly, the execution is quick and convenient, and the construction period is short; and the longitudinal beam with the steel structure can be used repeatedly, thereby avoiding waste.

Description

A kind of steel reinforced concrete beam making bench

Technical field

The utility model relates to a kind of beam making bench, more specifically say so a kind ofly be applied in the railroad bridge engineering, for finishing the indispensable tooling device of prefabricated case beam, for prefabricated case beam provides the place.

Background technology

In China, classification of rail has increased " Line for Passenger Transportation " grade again except that I, II, III level at present, and speed per hour 200 is to 350km/h, is referred to as Line for Passenger Transportation based on the speed rail of passenger traffic.Line for Passenger Transportation is support with high speed and rapid technology, and train running speed has been realized historical leap.The Line for Passenger Transportation freight volume is big, usefulness is high, and economic results in society are remarkable.

I, II, III level railway, especially Line for Passenger Transportation circuit major part is made up of bridge, the case beam is the main ingredient of bridge, the case beam is divided into cast-in-situ box girder and prefabricated case beam, wherein the production of prefabricated case beam need be carried out centralized production by special beam making field, and beam making bench is the indispensable tooling device of beam making field.

At present, being applied in the beam making bench of railway box in beam prefabricated is the whole concrete structure, is made up of basis, end, end longeron, basis, middle part and waist longeron.In the construction, at first carry out foundation excavation and processing, tie up basis, end and middle part reinforcement foundation again, and the pre-buried muscle of longeron, formwork erection construction end and basis, middle part are tied up longeron poker muscle and pre-buried steel member again, and formwork erection carries out the longeron concrete construction again.There is following problem in this form of structure in practice of construction:

1, at this whole concrete structure, work progress comprises: formwork erection, concrete construction, concrete curing, form removal etc., manufacturing process take a lot of work, time-consuming, and the cycle is long, and colligation welding quantity is big.

2, the whole concrete structure not only can not reuse, and the later stage reclaims in place time dismounting man-hour is big, expense is high.

3, to adopt a large amount of templates in the construction, reinforcing bar and concrete, the cost height, the consumption of mould material is big, and steel concrete expends many.

4, adopt the concrete longeron, when stream curing case beam underplate concrete, steam only can carry out cold and hot exchange from the pedestal end in the concrete longeron spatial dimension, and the steam between each bar concrete longeron can not exchange, so just make in the concrete longeron space and all there are temperature contrast in outside steam and the steam between each concrete longeron space, to compare the surplus position of case Liangqi not prompt enough in the health of case beam underplate concrete thus, and base plate strength rises slack-off thereupon.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of steel reinforced concrete beam making bench is provided, giving up with simplification work progress, the raw-material consumption of minimizing.

The utility model technical solution problem adopts following technical scheme:

The utility model steel reinforced concrete beam making bench adopts concrete foundation, its design feature to be, at the length direction of pedestal upper edge, the middle part of described concrete foundation prefabricated case beam the steel work longeron is set.

The utility model steel reinforced concrete beam making bench, its design feature also is:

Described steel work longeron is three roads that be arranged in parallel, is fixedly connected with the steel work crossbeam between the adjacent twice steel work longeron, forms steel truss structure.

Each column is set between described steel work longeron and middle part pedestal at interval, and described steel work longeron is supported on each column that is provided with at interval.

Described steel work longeron is set at the fixed structure on the pedestal of the middle part of concrete foundation is: in the pedestal of described middle part the pre-embedded steel slab composite member is set, connect steel pipe post with bolt on described pre-embedded steel slab composite member, described steel work longeron is connected and fixed with bolt and is supported on the described steel pipe post.

Described steel work longeron is set at the fixed structure on the pedestal of the middle part of concrete foundation is: each concrete column is set on the pedestal of described middle part at interval, in described each concrete column the pre-embedded steel slab composite member is set, described steel work longeron is connected and fixed with bolt and is supported on the described pre-embedded steel slab composite member.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model adopts steel and concrete structure, has significantly reduced the use amount of template, and the form of structure of its assembly unit has been simplified production process greatly, and quick construction is convenient, effectively the reduction of erection time; Its steel work longeron and crossbeam can be reused, and have avoided waste; The type of attachment easy accessibility of its bolt.

2, the utility model can be eliminated the construction error of pedestal well by adjusting steel pipe post.

3, the utility model has good rigidity and stability by the steel truss structure that steel work longeron and steel work crossbeam constitute.

4, the spacing that the utility model can be by changing steel pipe post and the width of soffit formwork are effectively realized general between case beam that bottom width differs greatly, as single line case beam and double line box girder.

5, the utility model replaces the concrete longeron with the steel work longeron, can effectively arrange steam pipeline in the steel work longeron, makes the beam physical efficiency reach good maintenance effect rapidly easily.

6, the utility model is supported on the steel work longeron on each column that is provided with at interval, when stream curing, under the steel work longeron between each column steam can enter jointly from pedestal sidepiece and end and accelerate the cold and hot exchange of steam, and can there be the temperature difference in steam yet between each steel work longeron, can make the health of case beam underplate concrete identical like this, accelerate the rising of case beam concrete strength with all the other positions.

7, the utility model steel and concrete structure of finishing assembling can satisfy logical bridge (2008) the 2221A series of 250 kilometers post-stressed simple beams of passenger dedicated railway line of speed per hour, logical bridge (2008) 2224A series, logical bridge (2009) 2229 series; And tens kinds of beam types of series such as logical bridge (2006) 2322 series of 350 kilometers post-stressed simple beams of passenger dedicated railway line of speed per hour, logical bridge (2008) 2322A series.

Description of drawings

Fig. 1 a is the vertical structure schematic diagram of the utility model embodiment 1;

Fig. 1 b is the cross-sectional configuration schematic diagram of the utility model embodiment 1;

Fig. 1 c is the plane structure schematic diagram of the utility model embodiment 1.

Fig. 2 a is the vertical structure schematic diagram of the utility model embodiment 3;

Fig. 2 b is the cross-sectional configuration schematic diagram of the utility model embodiment 3;

Fig. 2 c is the plane structure schematic diagram of the utility model embodiment 3.

Fig. 3 is the utility model embodiment 2 structural representations.

Fig. 4 is the utility model embodiment 4 structural representations.

Number in the figure: 1 middle part pedestal, 2 steel work longerons, 3 steel work crossbeams, 4 pre-embedded steel slab composite membeies, 51 steel pipe posts, 52 concrete columns, 6 end longerons, 7 bed dies.

The specific embodiment

Embodiment 1:

Referring to Fig. 1 a, Fig. 1 b and Fig. 1 c, present embodiment adopts concrete foundation, in the middle part of concrete foundation pedestal 1, pre-embedded steel slab composite member 4 is set, steel pipe post 51 is installed on pre-embedded steel slab composite member 4, steel work longeron 2 is installed on steel pipe post 51, steel work crossbeam 3 is installed between adjacent steel work longeron 2.

In concrete the enforcement,, connect steel work crossbeam 3 between the adjacent twice steel work longeron, to form steel truss structure along the length direction of the prefabricated case beam three road steel work longerons 2 that be arranged in parallel.

In the present embodiment, the fixed structure of steel work longeron 2 on the basis, middle part 1 of beam making bench is: pre-embedded steel slab composite member 4 is set in basis, middle part 1, with bolt connection steel pipe post 51 is installed on pre-embedded steel slab composite member 4, steel work longeron 2 is connected and fixed with bolt and is supported on the steel pipe post 51;

In the present embodiment, steel pipe post 51 has eight covers under steel work longeron 2, press structure shown in Fig. 1 a along evenly being provided with on the length direction of prefabricated case beam, the steel reinforced concrete beam making bench has three road steel work longerons 2, be connected with 12 cover steel work crossbeams, 3 (shown in Fig. 1 c) between the three road steel work longerons 2, steel pipe post 51 is φ 351mm * 10mm.

Shown in Fig. 1 a, end longeron 6 in this enforcement is the concrete longeron, and bed die 7 is logical bridge (2008) 2221A-VII case beam bottom boards, after in case joist steel template production department the case beam bottom board being processed in concrete the enforcement, haul the job site, directly on steel work longeron 2, install.

Work progress:

1, finishes the construction on the basis, middle part 1 of concrete foundation in the beam making bench at first in the usual way, and pre-embedded steel slab composite member 4 is set in basis, middle part 1, pre-embedded steel slab composite member 4 is t12mm * 500mm * 500mm steel plate, when construction, wrapped up the bolt silk mouth of steel plate composite member 4, and the planeness of the steel plate on the requirement assurance pre-embedded steel slab composite member 4, four jiaos of discrepancy in elevation must not be greater than 2mm.

2,20 quadruplet steel pipe posts 51 are connected on the steel plate composite member 4 by the bolt installation, to guarantee the verticality of steel pipe post 51 during connection, by adding apical side height that the 500mm that mat thickness do not wait * 500mm steel plate adjusts steel pipe post 51 at grade, to eliminate the height error of installing before the steel work longeron 4.

3, on the end plate of steel pipe post 51, with the bolted steel structure longeron 2 of M32mm, connect with bolt by steel work crossbeam 3 between the adjacent steel pipe post 51 of horizontally-arranged, form steel truss structure thus.

4, bed die 7 and supporting jackscrew are installed on steel truss, the steel reinforced concrete beam making bench is moulding.

Embodiment 2:

Referring to Fig. 3, different is in the present embodiment, between each adjacent road steel work longeron 2 steel work crossbeam 3 to be set no longer with embodiment 1.This form at the less case beam of specification under the prerequisite of guaranteed strength and soundness one step simplified structure more the time, simplify and make, reduce cost.

Embodiment 3:

Referring to Fig. 2 a, Fig. 2 b and Fig. 2 c, different is for present embodiment and embodiment 1, the fixed structure of steel work longeron 2 on the middle part of concrete foundation pedestal 1 is set is: each concrete column 52 is set on middle part pedestal 1 at interval, in each concrete column 52 pre-embedded steel slab composite member 4 is set, steel work longeron 2 is connected and fixed with bolt and is supported on the pre-embedded steel slab composite member 4.

Compare with embodiment 1, the direct concrete column of present embodiment, under the prerequisite that guarantees the pedestal result of use, owing to reduce the use amount of steel, thereby can save cost.

Embodiment 4:

Referring to Fig. 4, different is in the present embodiment, between each adjacent road steel work longeron 2 steel work crossbeam 3 to be set no longer with embodiment 3.This form at the less case beam of specification under the prerequisite of guaranteed strength and soundness one step simplified structure more the time, simplify and make, reduce cost.

Claims

1. steel reinforced concrete beam making bench adopts concrete foundation, it is characterized in that, at the length direction of the middle part of described concrete foundation pedestal (1) upper edge prefabricated case beam steel work longeron (2) is set.

2. steel reinforced concrete beam making bench according to claim 1 is characterized in that three roads of described steel work longeron (2) for be arrangeding in parallel, is fixedly connected with steel work crossbeam (3) between the adjacent twice steel work longeron, forms steel truss structure.

3. steel reinforced concrete beam making bench according to claim 1 and 2 is characterized in that each column is set between described steel work longeron (2) and middle part pedestal (1) at interval, and described steel work longeron (2) is supported on each column that is provided with at interval.

4. steel reinforced concrete beam making bench according to claim 1 and 2, it is characterized in that being provided with described steel work longeron (2) at the fixed structure on the middle part of the concrete foundation pedestal (1) is: pre-embedded steel slab composite member (4) is set in described middle part pedestal (1), go up with bolt connection steel pipe post (51) at described pre-embedded steel slab composite member (4), described steel work longeron (2) is connected and fixed with bolt and is supported on the described steel pipe post (5).

5. steel reinforced concrete beam making bench according to claim 1 and 2, it is characterized in that being provided with the fixed structure of described steel work longeron (2) on the middle part of concrete foundation pedestal (1) is: go up at described middle part pedestal (1) each concrete column (52) is set at interval, pre-embedded steel slab composite member (4) is set in described each concrete column (52), and described steel work longeron (2) is connected and fixed with bolt and is supported on the described pre-embedded steel slab composite member (4).