CN210684465U

CN210684465U - Construction support of 0# block of large-span continuous beam single-box multi-chamber box beam

Info

Publication number: CN210684465U
Application number: CN201920913050.7U
Authority: CN
Inventors: 郭炜欣; 张晏; 廖德兵; 王科; 鲁兴亮; 王迎军; 郝尊广; 唐亚辉; 鲁亮; 潘明; 徐亮; 凌晨
Original assignee: Fourth Engineering Co Ltd of China Railway Seventh Group Co Ltd; China Railway Seventh Group Co Ltd
Current assignee: Fourth Engineering Co Ltd of China Railway Seventh Group Co Ltd; China Railway Seventh Group Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-06-05
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a construction support of 0# piece of single case multi-chamber case roof beam of large-span continuous beam relates to the technical field of bridge construction. Including being fixed in a plurality of pre-buried girder steels of pier inside, the side all is fixed with two sets of stay tube groups all around the pier, and each stay tube group of organizing all includes first stay tube and second stay tube, and the interval that is located between two first stay tubes of pier homonymy is greater than the interval between two second stay tubes, and four stay tube groups support fixed support frame jointly, and the support frame is formed by a plurality of girder steels concatenation combination, and the support frame top is fixed with the case roof beam mould that is used for 0# piece construction. The utility model discloses a first stay tube and second stay tube play the supporting role to the support frame jointly to being under construction to the 0# piece, first stay tube and second stay tube snap-on are on the pre-buried girder steel of pier inside, and the convenient dismantlement to first stay tube and second stay tube has reduced the damage to pier shaft when demolising the construction support at the in-process of dismantling.

Description

Construction support of 0# block of large-span continuous beam single-box multi-chamber box beam

Technical Field

The utility model belongs to the technical field of the technique of bridge construction and specifically relates to a construction support of multi-chambered 0# piece of large-span continuous beam single-box.

Background

With the development of national economy and traffic industry, the bridge structures at home and abroad are developed quickly, the river-crossing and sea-crossing projects are increased day by day, the bridge construction is developed towards a longer and higher trend, the span is increased day by day, the system is also more and more complex, the application of new materials is increased day by day, the structure system is also more and more novel, the construction technology is more and more advanced, the construction of continuous beams is more and more common in the current bridge construction process, and the No. 0 block is used as a part of the first construction in the bridge construction of the continuous beams, and the structural design and the processing method are also improved day by day.

Support need be used to support it around the pier in the work progress of 0# piece, then construct 0# piece through the box girder mould, among the current construction method, often adopt bracket type support to the processing of 0# piece, bracket type support needs to be pre-buried in the pier shaft of pier, the in-process of demolising bracket type support after accomplishing the construction of 0# piece, can cause the damage to the pier shaft to a certain extent, it is also not very convenient when demolising.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a convenient construction support of removing long-span continuous beam single-box multi-chamber box girder 0# piece that reduces pier shaft damage.

The utility model discloses a can realize through following technical scheme:

the construction support of 0# piece of single case multi-chambered case roof beam of large-span continuous beam, including a plurality of pre-buried girder steels that are fixed in the pier bottom, the side all is fixed with two sets of stay tube groups around the pier, and each group the stay tube group all includes first stay tube and second stay tube, and is located two of pier homonymy interval between the first stay tube is greater than two interval between the second stay tube is a plurality of the stay tube group supports fixed support frame jointly, and the support frame is formed by a plurality of girder steels concatenation combinations, the support frame top is fixed with the case roof beam mould that is used for 0# piece construction.

Through adopting above-mentioned technical scheme, first stay tube plays the supporting role with the second stay tube to the support frame jointly to be under construction to the 0# piece, first stay tube and second stay tube snap-on are on the inside pre-buried girder steel of pier, and the convenience is to the dismantlement of first stay tube and second stay tube, and at the in-process of dismantling, to the damage of pier shaft when having reduced to demolish the construction support, have guaranteed the pleasing to the eye of pier shaft.

Further setting the following steps: each first supporting pipe with all be fixed with a plurality of triangle support piece between the pre-buried girder steel, each second supporting pipe with all be fixed with a plurality ofly between the pre-buried girder steel triangle support piece.

Further setting the following steps: be located same a plurality of in first support tube week side triangle support piece winds the equidistant distribution of circumference and a plurality of first support tube the welding has the strengthening rib between the triangle support piece.

Further setting the following steps: the triangular supports are located on the same periphery side of the second supporting pipe and are distributed at equal intervals in the circumferential direction of the second supporting pipe in a winding mode, and reinforcing ribs are welded among the triangular supports.

Through adopting above-mentioned technical scheme, triangular supports spare increases the joint strength between first stay tube, second stay tube and the pre-buried girder steel, and the supporting role when also having increased first stay tube, second stay tube and supporting has then increased the structural strength of construction support, and the strengthening rib can increase the structural strength between a plurality of triangular supports spare, and then has increased the structural strength between first stay tube, second stay tube and the pre-buried girder steel.

Further setting the following steps: lie in two of homonymy the welding has first support purlin between the first stay tube, lies in two of homonymy the welding has second support purlin between the second stay tube, first support purlin with welded fastening has many first support batter posts between the second support purlin, and many form a plurality of triangular structure jointly between first support batter post and first support purlin, the second support purlin.

Through adopting above-mentioned technical scheme, first support purlin has increased the structural strength between two first stay tubes, the second supports the purlin has increased the structural strength between two second stay tubes, first support batter post has increased the structural strength between first stay tube and the second stay tube, first support batter post and first support purlin post, a plurality of triangular structure have been constituteed jointly to the second support purlin post, be favorable to increasing the structural strength between first stay tube and second stay tube, also make two stay tubes of pier with one side constitute for a atress whole simultaneously, the structural strength of construction support has further been increased.

Further setting the following steps: pier both sides and adjacent two the welding has a plurality of third to support the purlin post between the first support tube, and is a plurality of the third supports the purlin post and follows the equidistant distribution of axial of first support tube.

Through adopting above-mentioned technical scheme, the third supports the truss and couples together the adjacent first support tube of pier different week sides, has increased structural strength between the two, also makes all support tubes of pier week side become a atress whole, also can guarantee the structural stability of self when the construction support receives higher load.

Further setting the following steps: and a second supporting inclined column is welded and fixed between every two adjacent third supporting trussed columns, and the second supporting inclined column and the two third supporting trussed columns jointly form two triangular structures.

Through adopting above-mentioned technical scheme, the second supports the batter post and has further increased the structural strength between two adjacent first support tubes of the different week sides of pier, and has formed the triangular structure between second support batter post and the third support purlin, and the triangular structure is more stable, and then has increased the holistic structural strength of construction support.

Further setting the following steps: and a fourth supporting truss column is fixed between the first supporting tube and the second supporting tube in each group of supporting tube groups.

Through adopting above-mentioned technical scheme, first support truss can increase the structural strength between first stay tube and the second stay tube, has improved the structural strength of construction support, also can maintain the stability of construction support when the operating condition of high load.

Further setting the following steps: the first supporting tube and the second supporting tube are fixed with a plurality of third supporting inclined columns at the fourth supporting truss column, and the third supporting inclined columns are fixedly connected with the supporting frame.

Through adopting above-mentioned technical scheme, the third supports the batter post and has further increased the structural strength between first stay tube, second stay tube and the support frame, has played better supporting effect to the support frame.

To sum up, the utility model discloses a beneficial technological effect does: the utility model discloses a fix first support purlin post and the second in pier bottom and support the purlin post and play main supporting role, conveniently dismantle when finishing the construction, and can not lead to the fact destruction to the pier shaft when dismantling, kept the pleasing to the eye of pier shaft.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention

FIG. 2 is a schematic view of the present invention during construction;

fig. 3 is an enlarged schematic view at a in fig. 1.

Reference numerals: 1. pre-burying a steel beam; 2. a support tube set; 3. a first support tube; 4. a second support tube; 5. a support frame; 6. a box girder mold; 7. a triangular support; 8. reinforcing ribs; 9. a first support truss column; 10. a second support truss column; 11. a third support truss column; 12. a fourth support truss column; 13. a first support diagonal post; 14. a second supporting batter post; 15. and a third supporting oblique column.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the construction bracket of the 0# block of the large-span continuous beam single-box multi-chamber box girder comprises a plurality of pre-buried steel beams 1 fixed in a temporary concrete layer inside a pier, and the pre-buried steel beams 1 are criss-cross in a net shape to increase the structural strength of the pre-buried steel beams 1. Eight groups of supporting pipe groups 2 are welded and fixed on the embedded steel beam 1, and the supporting pipe groups 2 are distributed around the pier by taking two groups as units.

The supporting pipe group 2 is not directly fixed around the pier but fixed on the embedded steel beam 1 in the temporary concrete layer at the bottom of the pier, and when the supporting pipe group is detached, the supporting pipe group is directly detached at the bottom of the pier, so that the pier body is not required to be detached, the damage to the surface of the pier body during construction is reduced, and the attractiveness of the pier body is ensured.

Each group of support tube groups 2 comprises a first support tube 3 and a second support tube 4, and the distance between the two second support tubes 4 on the same side of the pier is smaller than the distance between the two first support tubes 3. All fixed through the welded mode between the bottom of all first stay tubes 3, second stay tube 4 and the pre-buried girder steel 1, and still weld four triangle support piece 7 between the bottom of each first stay tube 3, second stay tube 4 and the pre-buried girder steel 1, each triangle support piece 7 comprises two steel pipes and two steel pipe bottoms and pre-buried girder steel 1 welded fastening and with pre-buried girder steel 1 between form one be used for increasing structural strength's triangle structure. The four triangular supports 7 are distributed at equal intervals on the peripheral sides of the corresponding first support tube 3 and the second support tube 4.

Referring to fig. 1 and 3, reinforcing ribs 8 for reinforcing the structural strength of the triangular supports 7 are welded between the four triangular supports 7 on the same first support pipe 3 and the same second support pipe 4.

Referring to fig. 1 and 2, a first support truss column 9 is welded between two first support pipes 3 on the same side of a bridge pier in the horizontal direction, and a second support truss column 10 is welded between two second support pipes 4 on the same side of the bridge pier in the horizontal direction. Four first support struts 13 are fixed between the first support strut 9 and the second support strut 10. The four second supporting oblique columns 14, the first supporting truss columns 9 and the second supporting truss columns 10 form three triangular structures for reinforcing the structural strength, the first supporting tubes 3 and the second supporting tubes 4 on the same side of the pier are made into a stressed whole through the first supporting oblique columns 13, and the stress of the single first supporting tube 3 or the single second supporting tube 4 is reduced.

A plurality of third support trusses 11 which are parallel to each other and are equidistant are welded between two adjacent first support pipes 3 of the bridge pier along the horizontal direction. And a second inclined supporting column 14 is welded and fixed between two adjacent third supporting trusses 11, and the second supporting trusses 10, the third supporting trusses 11 and the first supporting tubes 3 form a triangular structure together to increase the structural strength.

A fourth supporting truss 12 is fixed between the first supporting tube 3 and the second supporting tube 4 in the same group of supporting tube groups 2, the fourth supporting truss 12 is located at a position close to the top end of the first supporting tube 3, and the fourth supporting truss 12 is used for increasing the structural strength between the first supporting tube 3 and the second supporting tube 4. Two third supporting inclined columns 15 are respectively fixed at the joints of the fourth supporting trusses 12 of the first supporting tube 3 and the second supporting tube 4.

Referring to fig. 2, the top ends of all the first support tube 3, the second support tube 4 and the third support inclined column 15 support a support frame 5 together, the support frame 5 is formed by splicing a plurality of steel beams into a funnel-shaped support structure, and a box girder mold 6 for processing a 0# block is fixed at the top end of the support frame 5.

The utility model discloses a theory of operation and beneficial effect do:

the utility model discloses a first stay tube 3 and second stay tube 4 play the supporting role to support frame 5 jointly to be under construction to 0# piece, first stay tube 3 and second stay tube 4 are directly fixed on pre-buried girder steel 1 inside the pier, convenient dismantlement to first stay tube 3 and second stay tube 4, in the process of dismantling, the damage to the pier shaft when dismantling the construction support has been reduced, and under the effect of triangular support 7, the structural strength between first stay tube 3, second stay tube 4 and pre-buried girder steel 1 has been strengthened, and the atress of first stay tube 3, second stay tube 4 has been dispersed; meanwhile, under the action of the first support truss column 9, the second support truss column 10 and the first support inclined column 13, the structural strength of the first support tube 3 and the second support tube 4 is increased, and the structural strength between the first support tube 3 and the second support tube 4 is also increased by the third support truss column 11, the fourth support truss column 12 and the third support inclined column 15.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The construction support of 0# piece of single case multi-chamber case roof beam of large-span continuous beam, its characterized in that: including being fixed in inside a plurality of pre-buried girder steels (1) of pier, the side all is fixed with two sets of support nest of tubes (2) all around the pier, each group support nest of tubes (2) all include first stay tube (3) and second stay tube (4), and are located two of pier homonymy interval between first stay tube (3) is greater than two interval between second stay tube (4), four support nest of tubes (2) support fixed support frame (5) jointly, and support frame (5) are formed by a plurality of girder steels concatenation combination, support frame (5) top is fixed with box girder mould (6) that are used for 0# piece construction.

2. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 1, wherein: the bottom of first stay tube (3), second stay tube (4) with all be equipped with a plurality of triangle support piece (7) between pre-buried girder steel (1).

3. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 2, wherein: be located same a plurality of in first supporting tube (3) week side triangle support piece (7) wind the circumference equidistant distribution and a plurality of first supporting tube (3) it has strengthening rib (8) to weld between triangle support piece (7).

4. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 2, wherein: the triangular support pieces (7) are located on the same circumferential side of the second support pipe (4) and are distributed at equal intervals in the circumferential direction of the second support pipe (4) in a winding mode, and reinforcing ribs (8) are welded between the triangular support pieces (7).

5. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 1, wherein: be located two of homonymy the welding has first support purlin post (9) between first stay tube (3), is located two of homonymy the welding has second support purlin post (10) between second stay tube (4), first support purlin post (9) with welded fastening has many first support batter post (13) between second support purlin post (10), and many form a plurality of triangular structure jointly between first support batter post (13) and first support purlin post (9), the second support purlin post (10).

6. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 1, wherein: pier both sides and adjacent two it has a plurality of third to support purlin post (11), a plurality of to weld between first support tube (3) third supports purlin post (11) and follows the equidistant distribution of axial of first support tube (3).

7. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 6, wherein: and a second supporting oblique column (14) is welded and fixed between every two adjacent third supporting truss columns (11), and the second supporting oblique column (14) and the two third supporting truss columns (11) jointly form two triangular structures.

8. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 1, wherein: and a fourth supporting truss column (12) is fixed between the first supporting tube (3) and the second supporting tube (4) in each group of supporting tube groups (2).

9. The construction bracket of 0# block of large-span continuous beam single-box multi-chamber box beam of claim 8, wherein: the first supporting tube (3) and the second supporting tube (4) are fixed with a plurality of third supporting inclined columns (15) at the fourth supporting truss column (12), and the third supporting inclined columns (15) are fixedly connected with the supporting frame (5).