CN214883009U

CN214883009U - Viaduct jacking bearing platform pier stud upgrading structure

Info

Publication number: CN214883009U
Application number: CN202120866947.6U
Authority: CN
Inventors: 徐志颖; 杨行; 孙美华; 马宝祥; 徐颖敏; 陈浩; 许红霞; 赵瑞钊; 孔维硕; 陈士高; 应叶青; 李元
Original assignee: Zhejiang Communications Construction Group Co Ltd; Zhejiang Jinzhu Transportation Construction Co Ltd
Current assignee: Zhejiang Communications Construction Group Co Ltd; Zhejiang Jinzhu Transportation Construction Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-26
Anticipated expiration: 2031-04-26

Abstract

The utility model relates to a viaduct jacking cushion cap pier stud upgrading structure, which comprises a cushion cap, a hanging type reinforcement jig frame, a cushion cap external expansion foundation, a hanging type template system, an integral bottom stabilizing frame, a steel pipe support, a jack, a reinforcement cage in-situ binding fixing frame and pier stud heightening concrete; a foundation pit is excavated on a bearing platform, a hanging type steel bar binding jig frame is placed on the bearing platform, outer expanding foundations of the bearing platform are arranged on two sides of the bearing platform, a hanging type template system is fixed on a pier column through a hoop, an integral bottom stabilizing frame is arranged on the bearing platform, steel pipe supports are arranged on two sides of the pier column, a profile steel support frame is arranged between the steel pipe supports, and a jack is arranged at the top of each steel pipe support; a reinforcement cage in-situ binding fixing frame is arranged at the top of the pier stud; pouring pier column heightening concrete at the top of the pier column. The utility model has the advantages that: the utility model discloses set up four cushion cap external expansion bases in cushion cap both sides, cushion cap external expansion basis steel reinforcement skeleton ligature adopts the suspension type steel reinforcement bed-jig of shelving original cushion cap, rational in infrastructure.

Description

Viaduct jacking bearing platform pier stud upgrading structure

Technical Field

The utility model relates to a viaduct jacking cushion cap pier stud structure, in particular to convenient, the structural integrity of site operation is good, the high viaduct jacking cushion cap pier stud upgrading structure of efficiency of construction belongs to the civil engineering field, is applicable to viaduct jacking construction engineering.

Background

With the rapid development of economic society, the tasks of urban expansion and road reconstruction are continuously aggravated, the aims of maintenance, reinforcement and reconstruction can be achieved on the premise of not damaging the original structural strength and keeping the using function of a highway bridge, and the economical efficiency is self-evident. The bridge jacking technology is used as an economic, efficient and environment-friendly displacement processing means, is mainly applied to projects such as support replacement, elevation adjustment, lower structure maintenance, reinforcement and reconstruction and the like, and is widely applied to bridge construction and maintenance, reinforcement and reconstruction

In recent years, the jacking technology has been successfully applied to various aspects such as integral jacking displacement of buildings, jacking and falling of large structures, replacement of bridge supports, linear adjustment of bridges, elevation adjustment, maintenance, reinforcement and reconstruction of bridges, bridge construction and erection and the like, and has a wide application foundation, but systematic and comprehensive research on the technology is not enough, most of the technologies only stand by one example, and common research is lacked. Relevant normative documents are not provided by relevant national departments, and the problems of safety and quality control are inevitable in the construction process, so that the whole construction effect of jacking construction is influenced.

In conclusion, although the construction of the existing jacking technology obtains better construction effect under proper working conditions, the construction technology has defects in the aspects of improving the on-site construction efficiency, saving the consumption of construction materials, reducing the occupied construction area and the like. In view of this, in order to improve the field construction quality and efficiency, reduce the occupied area of jacking construction, and save construction materials, the invention of the elevated pier column upgrading structure for the viaduct with convenient field construction, good structural integrity and high construction efficiency is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, providing a viaduct jacking cushion cap pier stud upgrading structure that site operation is convenient, structural integrity is good, efficiency of construction is high.

The viaduct jacking bearing platform pier column upgrading structure comprises a bearing platform, a hanging type steel bar binding jig frame, a bearing platform external expansion foundation, a hanging type template system, an integral bottom stabilizing frame, a steel pipe support, a jack, a steel reinforcement cage in-situ binding fixing frame and pier column heightening concrete; a foundation pit is excavated on a bearing platform, a hanging type steel bar binding jig frame is placed on the bearing platform, outer expanding foundations of the bearing platform are arranged on two sides of the bearing platform, a hanging type template system is fixed on a pier column through a hoop, an integral bottom stabilizing frame is arranged on the bearing platform, steel pipe supports are arranged on two sides of the pier column, a profile steel support frame is arranged between the steel pipe supports, and a jack is arranged at the top of each steel pipe support; a reinforcement cage in-situ binding fixing frame is arranged at the top of the pier stud; pouring pier column heightening concrete at the top of the pier column.

Preferably, the method comprises the following steps: the suspension type reinforcement binding jig comprises a jig frame placing frame, a steel rod sleeve, a jig frame upright rod and positioning steel bars, wherein the jig frame placing frame is vertically connected with the jig frame upright rod, the steel rod sleeve is distributed on the jig frame upright rod, and the positioning steel bars are arranged in the steel rod sleeve; the jig frame placing frame comprises a jig frame placing frame bottom plate, a jig frame placing frame vertical rod and a jig frame placing frame inclined strut, the jig frame placing frame bottom plate is placed on the bearing platform, the jig frame placing frame bottom plate is vertically connected with the jig frame placing frame vertical rod, and the jig frame placing frame inclined strut is arranged between the jig frame placing frame bottom plate and the jig frame placing frame vertical rod.

Preferably, the method comprises the following steps: the hanging type template system comprises a triangular inclined strut and an outward-expanding base side mold, the triangular inclined strut and the outward-expanding base side mold are connected through welding, the triangular inclined strut is fixed on a pier column through a hoop, and the outward-expanding base side mold is located on the outer side of a bearing platform outward-expanding base.

Preferably, the method comprises the following steps: the integral bottom stabilizing frame comprises a bottom steel plate and a bottom stabilizing frame side plate, the bottom steel plate and the bottom stabilizing frame side plate are connected through welding, pre-buried steel plate pre-buried bolts on the bottom steel plate are used for fixing steel pipe supports, and the bottom stabilizing frame side plate is connected with the bearing platform outward-expanding foundation through bearing platform pre-buried bolts.

Preferably, the method comprises the following steps: the steel reinforcement cage in-situ binding fixing frame comprises a steel reinforcement cage fixing frame base, a limiting steel pipe, a clamping piece, a steel reinforcement cage limiting plate and a fixing frame side plate, wherein the fixing frame side plate is arranged on the upper portion of the steel reinforcement cage fixing frame base, the fixing frame side plate is fixedly connected with the limiting steel pipe through the clamping piece, the steel reinforcement cage limiting plate is arranged between the limiting steel pipe and the steel reinforcement cage, and an adjustable pull rod and a fixing frame bottom clamping plate are arranged at the bottom of the steel reinforcement cage fixing frame base to clamp the steel reinforcement cage in-situ binding fixing frame on a pier stud.

Preferably, the method comprises the following steps: the pier stud heightening concrete template system comprises a side mold connecting pull rod, a heightening section side mold and a side mold reinforcing rib, the heightening section side mold is provided with the side mold reinforcing rib, a split bolt is arranged between the heightening section side molds, the side mold connecting pull rod is further arranged between the heightening section side molds, the top of the heightening section side mold is provided with a sliding groove and a vibrating rod placing frame, the vibrating rod placing frame is matched with the sliding groove, and a concrete vibrating rod is placed on the vibrating rod placing frame.

The utility model has the advantages that:

(1) the utility model discloses set up four cushion cap external expansion bases in cushion cap both sides, the cushion cap external expansion basis reinforcement cage ligature adopts the suspension type reinforcement bed-jig of shelving original cushion cap, and is rational in infrastructure to have good maneuverability.

(2) The utility model discloses the hanging type template system that cushion cap expands basic template system and adopt, hanging type template system passes through the cuff to be fixed at the pier stud, and is rational in infrastructure.

(3) The utility model discloses build the heightening concrete at the pier stud top after the viaduct jacking, adopt steel reinforcement cage normal position ligature mount to carry out steel reinforcement cage normal position ligature, can be to steel reinforcement cage accurate positioning.

(4) The utility model discloses heighten concrete template both sides at pier stud top and set up vibrating rod rest stand and spout, make things convenient for the vibrating rod to vibrate the concrete.

Drawings

Fig. 1 is a transverse bridge vertical view of the viaduct jacking structure of the present invention;

fig. 2 is a vertical view of the viaduct jacking structure of the present invention along the direction of the bridge;

FIG. 3 is a layout of the suspended reinforcement jig for the outward-expanding foundation of the bearing platform of the present invention;

FIG. 4 is a detailed view of the suspended reinforcement jig for the outward-expanding foundation of the bearing platform of the present invention;

FIG. 5 is a layout view of the suspended formwork system of the outward expanding foundation of the bearing platform of the present invention;

FIG. 6 is a schematic view of the in-situ binding fixing frame for the reinforced concrete cage at the top of the pier stud;

fig. 7 is a schematic view of the reinforced concrete form system at the top of the pier.

Description of reference numerals: 1-box girder, 2-pier stud, 3-capping beam, 4-foundation pit, 5-pile foundation, 6-bearing platform, 7-hanging type steel bar binding jig frame, 8-jig frame rest frame, 9-steel bar sleeve, 10-jig frame upright rod, 11-positioning steel bar, 12-hanging type template system, 13-hoop, 14-triangular inclined strut frame, 15-bearing platform external expansion foundation, 16-external expansion foundation side die, 17-steel pipe support, 18-section steel support frame, 19-jack, 20-integral bottom stabilizing frame, 21-bottom steel plate, 22-steel plate embedded bolt, 23-bearing platform embedded bolt, 24-bottom stabilizing frame side plate, 25-pier stud heightened concrete, 26-side die connecting pull rod and 27-heightened section side die, 28-side die reinforcing ribs, 29-counter bolts, 30-concrete vibrating rods, 31-vibrating rod rest stands, 32-chutes, 33-reinforcement cage in-situ binding fixed frames, 34-reinforcement cage fixed frame bases, 35-fixed frame bottom clamping plates, 36-limiting steel pipes, 37-clamping pieces, 38-reinforcement cage limiting plates, 39-fixed frame side plates, 40-adjustable pull rods, 41-bed rest bottom plates, 42-bed rest vertical rods and 43-bed rest inclined struts.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

As an embodiment, the viaduct jacking bearing platform pier column upgrading structure comprises a bearing platform 6, a hanging type steel bar binding jig frame 7, a bearing platform external expansion foundation 15, a hanging type template system 12, an integral bottom stabilizing frame 20, a steel pipe support 17, a jack 19, a steel reinforcement cage in-situ binding fixing frame 33 and pier column heightening concrete 25. Pile foundation 5 top is

cushion cap

6, and 6 tops of cushion cap are

pier stud

2, and 2 tops of pier stud are equipped with

bent cap

3, and 3 tops of bent cap are the case roof beam 1.

Fig. 1 is the utility model discloses overpass jacking structure cross-bridge is to elevation map, fig. 2 is the utility model discloses overpass jacking structure is along bridge to elevation map, refer to fig. 1-2 and show, set up four cushion caps and expand basis 15 outward in 6 both sides of cushion cap behind the excavation cushion cap foundation ditch 4, arrange integral bottom steady rest 20 on the cushion cap 6, set up steel pipe support 17 and shaped steel support frame 18 in pier stud 2 both sides, steel pipe support 17 adopts phi 609mm, wall thickness 16 mm's steel pipe, shaped steel support frame 18 adopts 14# channel-section steel. And a jack 19 is arranged at the top of the steel pipe support 17, and is used for integrally jacking the box girder 1, wherein the jack 19 adopts a 200-ton double-acting hydraulic jack. The integral bottom stabilizing frame 20 comprises a bottom steel plate 21 and a bottom stabilizing frame side plate 24, and the bottom steel plate 21 and the bottom stabilizing frame side plate 24 are connected through welding. The bottom steel plate 21 is pre-embedded with steel plate pre-embedded bolts 22, and the bottom stabilizing frame side plate 24 is connected with the bearing platform external expanding foundation 15 through the bearing platform pre-embedded bolts 23.

Fig. 3 is a layout diagram of the suspended reinforcement jig of the outward-extended foundation of the utility model, fig. 4 is a detailed diagram of the suspended reinforcement jig of the outward-extended foundation of the utility model, as shown in fig. 3-4, the reinforcement of the outward-extended foundation 15 of the bearing platform adopts a suspended reinforcement jig 7, the suspended reinforcement jig 7 comprises a jig rest 8, a steel rod sleeve 9, a jig upright rod 10 and a positioning steel bar 11, the jig rest 8 is vertically connected with the jig upright rod 10, the steel rod sleeve 9 is distributed on the jig upright rod 10, and the positioning steel bar 11 is arranged in the steel rod sleeve 9; the jig shelf 8 comprises a jig shelf bottom plate 41, a jig shelf upright rod 42 and a jig shelf inclined strut 43, the jig shelf bottom plate 41 is placed on the bearing platform 6, the jig shelf bottom plate 41 is vertically connected with the jig shelf upright rod 42, and the jig shelf inclined strut 43 is arranged between the jig shelf bottom plate 41 and the jig shelf upright rod 42.

Fig. 5 is the utility model discloses the cushion cap expands basic hanging type template system layout picture outward, refer to fig. 5 and show, cushion cap expands basic 15 construction outward and adopts hanging type template system 12, hanging type template system 12 includes triangle bracing frame 14 and expands basic side form 16 outward, triangle bracing frame 14 passes through the cuff 13 to be fixed on pier stud 2, triangle bracing frame 14 sub-unit connection expands basic side form 16 outward, expand basic side form 16 outward and be located cushion cap and expand the basic 15 outsides, expand basic side form 16 outward and adopt the Q235 steel form.

Fig. 6 is the utility model discloses pier stud top increases concrete steel reinforcement cage normal position ligature mount sketch map, and pier stud 2 chisels and increases the construction behind the upper portion curve section, and the pier stud increases concrete 25 steel reinforcement framework ligature and adopts steel reinforcement cage normal position ligature mount 33, and the concrete adopts C30 level concrete. The reinforcement cage in-situ binding fixing frame 33 comprises a reinforcement cage fixing frame base 34, a limiting steel pipe 36, a clamping piece 37, a reinforcement cage limiting plate 38 and a fixing frame side plate 39, the fixing frame side plate 39 is arranged on the upper portion of the reinforcement cage fixing frame base 34, the fixing frame side plate 39 is connected and fixed with the limiting steel pipe 36 through the clamping piece 37, the reinforcement cage limiting plate 38 is arranged between the limiting steel pipe 36 and a reinforcement cage, and an adjustable pull rod 40 and a fixing frame bottom clamping plate 35 are arranged at the bottom of the reinforcement cage fixing frame base 34 to clamp the reinforcement cage in-situ binding fixing frame 33 on the pier column 2. The adjustable pull rod 40 is divided into an upper pull rod and a lower pull rod which are connected and combined by a sleeve, and the length can be adjusted.

Fig. 7 is the utility model discloses pier stud top increases concrete template system schematic diagram, refer to fig. 7 and show, pier stud increases concrete 25's template system includes that the side form connects pull rod 26, increases section side form 27 and side form reinforcing rib 28, increase and set up side form reinforcing rib 28 on the section side form 27, increase and set up tie bolt 29 between the section side form 27, it connects pull rod 26 still to set up the side form between the section side form 27 to increase, it sets up spout 32 and vibrating spear rest 31 to increase section side form 27 top, vibrating spear rest 31 can slide along the spout, can shelve concrete vibrating spear 30 on vibrating spear rest 31 during concrete vibrating.

Claims

1. Overpass jacking cushion cap pier stud upgrading structure, its characterized in that: the steel reinforcement cage in-situ binding and fixing device comprises a bearing platform (6), a hanging type steel reinforcement binding jig frame (7), a bearing platform outward-expanding foundation (15), a hanging type template system (12), an integral bottom stabilizing frame (20), a steel pipe support (17), a jack (19), a steel reinforcement cage in-situ binding and fixing frame (33) and pier stud heightening concrete (25); a foundation pit (4) is excavated on a bearing platform (6), a hanging type reinforcement jig frame (7) is placed on the bearing platform (6), bearing platform outward-expanding bases (15) are arranged on two sides of the bearing platform (6), a hanging type template system (12) is fixed on a pier column (2) through a hoop (13), an integral bottom stabilizing frame (20) is arranged on the bearing platform (6), steel pipe supports (17) are arranged on two sides of the pier column (2), a section steel support frame (18) is arranged between the steel pipe supports (17), and a jack (19) is arranged at the top of each steel pipe support (17); a reinforcement cage in-situ binding fixing frame (33) is arranged at the top of the pier stud (2); pouring pier column heightening concrete (25) on the top of the pier column (2).

2. The viaduct jacking abutment pier column upgrading structure of claim 1, wherein: the suspension type reinforcement binding jig frame (7) comprises a jig frame placing frame (8), steel rod sleeves (9), jig frame upright rods (10) and positioning steel bars (11), wherein the jig frame placing frame (8) is vertically connected with the jig frame upright rods (10), the steel rod sleeves (9) are distributed on the jig frame upright rods (10), and the positioning steel bars (11) are arranged in the steel rod sleeves (9); the jig frame placing frame (8) comprises a jig frame placing frame bottom plate (41), a jig frame placing frame vertical rod (42) and a jig frame placing frame inclined strut (43), the jig frame placing frame bottom plate (41) is placed on the bearing platform (6), the jig frame placing frame bottom plate (41) is vertically connected with the jig frame placing frame vertical rod (42), and the jig frame placing frame inclined strut (43) is arranged between the jig frame placing frame bottom plate (41) and the jig frame placing frame vertical rod (42).

3. The viaduct jacking abutment pier column upgrading structure of claim 1, wherein: the hanging type template system (12) comprises a triangular inclined bracket (14) and an outward-expanding base side mold (16), the triangular inclined bracket (14) and the outward-expanding base side mold (16) are connected through welding, the triangular inclined bracket (14) is fixed on a pier column (2) through a hoop (13), and the outward-expanding base side mold (16) is located on the outer side of a bearing platform outward-expanding base (15).

4. The viaduct jacking abutment pier column upgrading structure of claim 1, wherein: the integral bottom stabilizing frame (20) comprises a bottom steel plate (21) and a bottom stabilizing frame side plate (24), the bottom steel plate (21) and the bottom stabilizing frame side plate (24) are connected through welding, pre-buried steel plate pre-buried bolts (22) are arranged on the bottom steel plate (21) and used for fixing a steel pipe support (17), and the bottom stabilizing frame side plate (24) is connected with a bearing platform outer expanding foundation (15) through bearing platform pre-buried bolts (23).

5. The viaduct jacking abutment pier column upgrading structure of claim 1, wherein: reinforcing cage normal position ligature mount (33) include reinforcing cage mount base (34), spacing steel pipe (36), card fastener (37), reinforcing cage limiting plate (38) and mount curb plate (39), reinforcing cage mount base (34) upper portion sets up mount curb plate (39), connect fixed spacing steel pipe (36) through card fastener (37) on mount curb plate (39), set up reinforcing cage limiting plate (38) between spacing steel pipe (36) and the reinforcing cage, reinforcing cage mount base (34) bottom sets up adjustable pull rod (40) and mount bottom clamping plate (35) and fixes reinforcing cage normal position ligature mount (33) clamping on pier (2).

6. The viaduct jacking abutment pier column upgrading structure of claim 1, wherein: the formwork system for heightening concrete (25) by the pier stud comprises a side die connecting pull rod (26), heightening section side dies (27) and side die reinforcing ribs (28), the heightening section side dies (27) are provided with the side die reinforcing ribs (28), split bolts (29) are arranged between the heightening section side dies (27), the side die connecting pull rod (26) is further arranged between the heightening section side dies (27), the tops of the heightening section side dies (27) are provided with a sliding groove (32) and a vibrating rod rest (31), the vibrating rod rest (31) is matched with the sliding groove (32), and the concrete vibrating rod (30) is placed on the vibrating rod rest (31).