CN202116984U

CN202116984U - Dragging-adjustable cross-brace device for continuous beams of spatial steel pipe trusses

Info

Publication number: CN202116984U
Application number: CN2011201477274U
Authority: CN
Inventors: 王海良; 杨新磊; 董鹏
Original assignee: Tianjin Urban Construction College
Current assignee: Tianjin Urban Construction College
Priority date: 2011-05-11
Filing date: 2011-05-11
Publication date: 2012-01-18
Anticipated expiration: 2021-05-11

Abstract

A dragging-adjustable cross-brace device for continuous beams of spatial steel pipe trusses belongs to the technical field of road and bridge construction, and is characterized in that cross-brace components are truss structures, each cross-brace component consists of two steel trusses which are connected via a horizontal connecting system, the cross-brace components are connected with an upper chord and a lower chord of a spatial steel pipe truss by shroud rings and steel pins, upper chords and lower chords of the cross-brace components are made of section steel, bidirectional expandable lead screws are disposed at three positions between each piece of cross-brace section steel and each shroud ring, each steel pin is directly arranged at one position between each piece of cross-brace section steel and each shroud ring, the length of each bidirectional expandable lead screw can be determined according to the maximum cross slope of a bent cap, and a dragging section passes through the maximum cross slope. The dragging adjustable cross-brace device has the advantages that the bidirectional expandable lead screws match with pin hole structures, and the dragging adjustable cross-brace device solves technical problems of requirements that positions of perpendicular planes of two steel pipe trusses are adjustable and faulted movement of horizontal planes of the two steel pipe trusses are allowed when the spatial steel pipe trusses pass through small-radius planar curves or bent caps with variable cross slopes and variable widths in a striding manner by means of dragging, is simple in method and has better economical and social benefits.

Description

Space steel pipe truss continuous beam is drawn adjustable stull device

Technical field

The utility model belongs to the construction of road and bridge technical field.

Background technology

At present, dilatory the setting up of bridge is a kind of job practices commonly used in the bridge construction, and dilatory in the past construction is mainly used in concrete box type structure, steel truss structure, and the general single width that adopts is dilatory during dilatory the construction, does not need stull between two width of cloth.Space steel pipe truss continuous beam is a kind of novel bridge form of structure, and the single width cross section is a triangle, because single width homeostasis problem when setting up needs two width of cloth to draw together, when dilatory, the stull that connects two width of cloth truss should be set.

As dilatory section when the dilatory construction through small radii plane curve, horizontal wall inscription change greatly, during degree of broadening bent cap; Relative space position can change with the bent cap change in location between two width of cloth; Two width of cloth relative space position were different when relative space position was with dilatory construction between two width of cloth of back owing to be in place; Connecting stull when dilatory between two width of cloth can not rigid connection, and stull structural system is being designed under the non-motor-driven system prerequisite, should be able to adapt to the dilatory requirement through different horizontal wall inscriptions, different in width bent cap of striding; It is movable relatively in vertical plane, horizontal plane to allow between two width of cloth truss, in order to avoid when dilatory construction, between two width of cloth truss, produce additional internal force.

State, the inside and outside space steel pipe truss continuous beam negligible amounts of having built; Its job practices is not seen the dilatory construction of employing yet; Built bridge superstructure of the same type and do not seen that being positioned at small radius plane curve, bent cap becomes horizontal wall inscription, degree of broadening place situation, the adjustable problem of stull between two width of cloth when therefore not relating to dilatory construction.

Summary of the invention

The purpose of the utility model is: provide a kind of space steel pipe truss continuous beam to draw adjustable stull device; During its can fine solution steel pipe truss dilatory construction the dilatory section of two width of cloth through less plane curve, become horizontal wall inscription, technical barrier when broadening bent cap, and reusable.

The technical scheme of the utility model is: trussed construction is adopted in stull; The stull of every place is made up of two steel trusss, connects system through level between two and connects, and stull adopts the upper and lower chord member of shroud ring, steel pin and space steel pipe truss to connect; The upper and lower chord member of stull adopts shaped steel; Have three places to adopt the bi-directional expansion screw mandrel between a slice stull shaped steel, shroud ring, a place directly adopts steel pin, and bi-directional expansion screw mandrel length can be confirmed through the maximum horizontal wall inscription of bent cap according to dilatory section.

The beneficial effect of the utility model is: propose first to become horizontal wall inscription, the dilatory erection method of space, degree of broadening place steel pipe truss continuous beam employing at small radius plane curve, bent cap; And employing common used material; Utilize bi-directional expansion screw mandrel and pin-and-hole respective outer side edges; Solved dilatory the striding of space steel pipe truss and required the technical barrier that two width of cloth steel pipe truss vertical plane position are adjustable, horizontal plane allows the changing of the relative positions when becoming horizontal wall inscription, degree of broadening through small radius plane curve, bent cap; Method is simple; Adopt under horizontal wall inscription, degree of the broadening situation dilatory construction to set up to provide for space steel pipe truss continuous beam becomes in facet sweep, bent cap that robust techniques assurance, the method extend to that other form bridge superstructure double width is dilatory, become the horizontal wall inscription situation through small radius plane curve, bent cap during the jack-in erection construction, have better economic and social benefit.

Description of drawings

Fig. 1 is that elevation is arranged in the adjustable stull of the present invention.

Fig. 2 is the adjustable stull plane of arrangement of the present invention figure;

Fig. 3 is the stull of the present invention elevation that winds up;

Fig. 4 is the stull of the present invention plan view that winds up;

Fig. 5 is a stull lower edge elevation of the present invention;

Fig. 6 is a stull lower edge plan view of the present invention;

Fig. 7 is a shroud ring structure elevation of the present invention;

Fig. 8 is shroud ring of the present invention structural plan figure.

The specific embodiment

Embodiment 1

Below in conjunction with accompanying drawing the utility model is done and to be further described:

As shown in the figure, 1 is the shroud ring that winds up, and 2 is steel pin, and 3 is the bi-directional expansion screw mandrel, and 4 wind up for stull, and 5 is the lower edge shroud ring, and 6 are the stull lower edge, and 7 for the upper and lower string of stull connects system, and 8 is that level connects system between two stulls, and 9 is connecting elements between shroud ring and two-way screw mandrel.

Trussed construction is adopted in the stull of this device, and the stull of every place is made up of two steel trusss, connects system through level between two and connects.Stull adopts the upper and lower chord member of shroud ring, steel pin and space steel pipe truss to connect; The upper and lower chord member of stull adopts shaped steel; There are three places to adopt the bi-directional expansion screw mandrel between a slice stull shaped steel, shroud ring; One place directly adopts steel pin, and bi-directional expansion screw mandrel length can be confirmed through the maximum horizontal wall inscription of bent cap according to dilatory section.In dilatory section during through different horizontal wall inscription bent cap; Adjust bi-directional expansion screw mandrel position, upper and lower six place of two stulls of every place's stull place; Can make two width of cloth space steel pipe trusses be in different vertical positions respectively; And be supported on the bent cap of different horizontal wall inscriptions, guarantee when dilatory, not make owing to the twisting stress of the bigger and extra increase of bridge pier horizontal wall inscription to space steel pipe truss continuous beam; Connect through connector, employing pin-and-hole between bi-directional expansion screw mandrel and shroud ring; Leave the slit between steel pin and pin-and-hole; In dilatory process, allow two width of cloth occurred level faces movable relatively, make it unlikely because horizontal displacement horizontal internal force of generation between two width of cloth is guaranteed work progress safety in dilatory process.

Adopt shroud ring on the upper and lower chord member of space steel pipe truss, to form bracket; Biplate is adopted in the stull of every place, to increase stull rigidity; The every upper and lower chord member of stull adopts shaped steel, and three places adopt the bi-directional expansion screw mandrel between upper and lower chord member of stull and shroud ring, and a place directly adopts steel pin to connect, and makes every stull form non-motor-driven system; In dilatory section during through different horizontal wall inscription bent cap, the upper and lower flexible screw mandrel length of adjustment stull, the stull system that two stulls are formed can be rotated at vertical plane, to adjust the vertical relative position of two width of cloth space steel pipe trusses.Adopt pin-and-hole to connect between shroud ring and stull bi-directional expansion screw mandrel, but make proper level activity between two width of cloth space steel pipe trusses

When dilatory section was dilatory, reason such as dilatory speed difference may cause to occur the horizontal relatively changing of the relative positions between two width of cloth steel pipe trusses that stull should be able to allow it that horizontal relatively changing of the relative positions takes place, in order to avoid produce excessive additional internal force between, two width of cloth less owing to plane curve.Adopt pin-and-hole to connect between shroud ring and stull bi-directional expansion screw mandrel, between pin-and-hole and steel pin the slit is arranged, when dilatory, can utilize this slit to solve owing to require to allow the problem of the horizontal relatively changing of the relative positions between two width of cloth; Two stull modes are adopted in the stull of every place, when allowing its horizontal changing of the relative positions, can make it when dilatory construction, form non-motor-driven system again.

Claims

1. a space steel pipe truss continuous beam is drawn adjustable stull device, it is characterized in that: trussed construction is adopted in stull, and the stull of every place is made up of two steel trusss; Connecting system through level between two connects; Stull adopts the upper and lower chord member of shroud ring, steel pin and space steel pipe truss to connect, and the upper and lower chord member of stull adopts shaped steel, has three places to adopt the bi-directional expansion screw mandrel between a slice stull shaped steel, shroud ring; One place directly adopts steel pin, and bi-directional expansion screw mandrel length can be confirmed through the maximum horizontal wall inscription of bent cap according to dilatory section.