CN107142834B - A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method - Google Patents

A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method Download PDF

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Publication number
CN107142834B
CN107142834B CN201710282337.XA CN201710282337A CN107142834B CN 107142834 B CN107142834 B CN 107142834B CN 201710282337 A CN201710282337 A CN 201710282337A CN 107142834 B CN107142834 B CN 107142834B
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China
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skeleton
arch
steel pipe
springing
steel
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CN107142834A (en
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袁爱民
杨佳玉
孙大松
符俊东
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JIANGSU HUATONG ENGINEERING TESTING CO LTD
Hohai University HHU
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JIANGSU HUATONG ENGINEERING TESTING CO LTD
Hohai University HHU
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D4/00Arch-type bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced
    • E01D2101/28Concrete reinforced prestressed
    • E01D2101/285Composite prestressed concrete-metal

Abstract

A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method, it replaces arch springing area complexity arrangement of reinforcement using arch springing arch camber stiff skeleton, and configure the mechanical device for being accurately positioned arch, integral steel box, fashioned iron and reinforcing bar are assembled into arch springing arch camber stiff skeleton by gusset plate, the common power bearing arch springing area and being transmitted to by tie-rod, end floor beam and arch rib, positioning device is mounted on arch springing arch camber stiff skeleton, it is located at the end and steel pipe and arch springing interface junction of steel pipe, adjusts direction and elevation that bolt changes steel pipe.

Description

A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction Method
Technical field
The present invention designs a kind of arch springing arch camber stiff skeleton of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe positioning And its construction method, it had not only participated in the stress of structure, but also provided arch positioning function, while ensuring that the casting of arch springing concrete is close It is real, belong to civil engineering technical field of bridge engineering.
Background technique
For base-supporting Steel Pipe Concrete Tied-arch Bridge since structural behaviour is superior, span ability is big, has higher pressure resistance Degree and non-deformability adapt to different geology and landform, and shape is graceful, is widely applied in recent years in China.But There are embedded steel tube arch position inaccurates at arch springing for such bowstring arch bridge at present, and arch springing area reinforcing bar is intensive, concrete casting The problems such as difficulty, Yi Yinqi leakiness.
Arch direction is determined at arch springing using falsework method, once but the determination of presence direction, it cannot but finely tune Drawback may generate relatively large deviation to arch direction after bracket disassembly, influence the stress of total, be easy to cause coagulation Soil cracking;Meanwhile using falsework, due to being inherently configured the reinforcing bar of comparatively dense, the use of temporary support at arch springing The concentration for more increasing reinforcing bar herein affects the close tamping of concrete vibration in the region, so that concrete strength is not up to Very big inconvenience is brought to design requirement, and to construction.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of arch springing arch camber stiffness bone of included steel pipe location adjusting device Frame is positioned and is fixed to the elevation angle of steel pipe at arch springing instead of the complicated arrangement of reinforcement in arch springing area.
It adopts this method with the globality for increasing arch springing, improves bearing capacity, steel tube arch rib is helped to be accurately positioned, save Material is convenient for the advantages of constructing.
In order to achieve the above technical purposes, the present invention takes technical solution in detail below:
A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure, including arch springing arch camber stiff skeleton, institute It states the outermost of arch springing arch camber stiff skeleton and close at the pre-buried extension position of steel pipe, the cross of installation positioning steel tube is respectively set To skeleton, and in horizontal skeleton install positioning steel tube adjusting bolt.
The arch springing arch camber stiff skeleton includes chord member, skeleton stirrup, skeleton brace, skeleton vertical bar and gusset plate, In, the chord member, skeleton stirrup, skeleton brace, skeleton vertical bar form arch springing arch camber stiff skeleton by gusset plate, in tie rod ends Portion's arrangement bearing stiffened steel plates reserve the hole that chord member and presstressed reinforcing steel pass through respectively on overhang bracket stiffened steel plates.
The chord member is Ribbed Bar.
The skeleton brace, skeleton vertical bar are equal leg angle.
In the side welding support limiting device of steel pipe.
The limiting device for bracket includes being fixedly welded on the triangle bracket of steel pipe side side and being set to described The lateral adjustment bolt of triangle bracket bottom.
A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe positioning construction method, using chord member, skeleton stirrup, bone Frame brace, skeleton vertical bar and each gusset plate connect into arch springing arch camber stiff skeleton, the stress at shared arch springing, and Installation and adjustment bolt on arch springing arch camber stiff skeleton is positioned and is fixed to the elevation angle of steel pipe at arch springing, specifically included following Several steps:
S1, the full-page proof according to corner of arch, design arch springing arch camber stiff skeleton, to chord member, skeleton stirrup, skeleton brace, Skeleton vertical bar and each gusset plate carry out setting-out, and blanking;
S2, chord member, skeleton stirrup, skeleton brace, skeleton vertical bar are formed into arch springing arch camber stiff skeleton by gusset plate, and Overhang bracket stiffened steel plates are arranged in tie-rod end, chord member is reserved respectively on overhang bracket stiffened steel plates and presstressed reinforcing steel is worn The hole crossed;
S3, the arch springing arch camber stiff skeleton for being sequentially connected chord member, skeleton stirrup, skeleton brace, skeleton vertical bar composition, make to encircle Foot arch camber stiff skeleton forms entirety;
S4: in the outermost of arch springing arch camber stiff skeleton and close to the pre-buried extension position of steel pipe, installation positioning is respectively set The horizontal skeleton of steel pipe, and in horizontal skeleton install positioning steel tube adjusting bolt;
S5: erection construction falsework is laid with bed die, in place by pre-splicing good arch springing arch camber stiff skeleton integral hoisting, Protective layer cushion block is installed, then arranges tie-rod presstressed reinforcing steel, arch springing embedded steel tube arch rib is installed, allow its put in arch springing one section away from From, and adjust adjusting bolt, tighten and fix;
S6: arrangement tie-rod presstressed reinforcing steel pipeline, and fixed with " # " font reinforcing bar and surrounding skeleton;
S7: installation side form is simultaneously fixed, casting concrete, demoulding two days later with split bolt, and maintenance is to reaching design strength.
Subregion is poured concrete in step S7, and prestressed pore passage position is avoided when vibrating.
The beneficial effects of the present invention are:
The first, arch camber stiff skeleton increases bearing capacity instead of the complicated arrangement of reinforcement of arch springing section, saves steel.
The second, many and diverse regular reinforcement is avoided to bind work, it is closely knit convenient for presstressed reinforcing steel pipe arrangement and concrete vibrating.
Third when avoiding arch springing section embedded steel tube arch rib, also needs separately to set bracket and carrys out supporting steel pipe arch rib embedded section.
4th, the angle that can accurately control arch springing embedded steel tube is adjusted using bolt.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of arch springing arch camber stiff skeleton;
Fig. 2 is the structural schematic diagram of overhang bracket stiffened steel plates;
Fig. 3 is the structural schematic diagram of skeleton stirrup;
Fig. 4 is gusset plate structural schematic diagram at 1-6 in Fig. 1;
Fig. 5 is gusset plate structural schematic diagram at 1-7 in Fig. 1;
Fig. 6 is gusset plate structural schematic diagram at 1-8 in Fig. 1;
Fig. 7 is gusset plate structural schematic diagram at 1-9 in Fig. 1;
Fig. 8 is the joint face schematic diagram of steel pipe and arch springing arch camber stiff skeleton;
Wherein, (8-1,8-2)-adjusts bolt;
Fig. 9 is steel pipe side welding support limiting device schematic diagram;
Wherein, the upper and lower chord member of 1-1-, 1-2- tie-rod presstressed reinforcing steel, 1-3- steel pipe, 1-4- skeleton stirrup, (1-5,5-3,6- 3,7-3,6-5,7-5,5-6,6-6)-skeleton brace, (1-6,1-7,1-8,1-9)-difference node Board position;2-1- is for prestressing force The hole that muscle passes through, the hole that 2-2- is passed through for chord member;(4-1,5-1,6-1,7-1)-gusset plate, (4-2,5-2,6-2,7-2)- Chord member, (4-4,5-4,6-4,7-4)-skeleton vertical bar, 7-5- arch rib skeleton outermost angle steel, (5-5,6-5)-and arch rib skeleton are most Side skeleton in the parallel arch ring of outboard angle;9-1- lateral adjustment bolt, 9-2- triangle bracket.
Specific embodiment
The present invention proposes a kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method, uses Arch springing arch camber stiff skeleton replaces arch springing complexity arrangement of reinforcement, is finely adjusted steel pipe elevation direction to steel pipe using bolt is adjusted Elevation direction is accurately positioned, and structure includes arch springing arch camber stiff skeleton, the outermost of the arch springing arch camber stiff skeleton and Close at the pre-buried extension position of steel pipe, the horizontal skeleton of installation positioning steel tube is respectively set, and installs and determines in horizontal skeleton The adjusting bolt of position steel pipe.
The arch springing arch camber stiff skeleton includes chord member, skeleton stirrup, skeleton brace, skeleton vertical bar and gusset plate, In, the chord member, skeleton stirrup, skeleton brace, skeleton vertical bar form arch springing arch camber stiff skeleton by gusset plate, in tie rod ends Portion's arrangement bearing stiffened steel plates reserve the hole that chord member and presstressed reinforcing steel pass through respectively on overhang bracket stiffened steel plates.
A kind of construction method of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure of the present invention is as follows:
Step 1: according to the full-page proof of corner of arch, design arch springing arch camber stiff skeleton, to chord member 1-1, skeleton stirrup 1-4, Skeleton brace 1-5 and all kinds of gusset plates carry out setting-out, and blanking, referring to Fig. 1.
In the present embodiment, choosing diameter is the Ribbed Bar of 16mm as the upper and lower chord member of skeleton, with a thickness of the entirety of 2cm Stiffened steel plates reserve prestressed pore passage as skeleton end stress loading plate;The web of arch springing arch camber stiff skeleton is (vertical and oblique To) equilateral channel steel of 100 × 100 × 5mm is respectively adopted, in the local reserving hole that chord member passes through.
Step 2: the good fashioned iron of blanking is assembled into arch springing arch camber stiff skeleton, arch springing arch camber stiff skeleton by gusset plate Overhang bracket stiffened steel plates as binder end mould, the shape of overhang bracket stiffened steel plates is shown in Fig. 2, in overhang bracket stiffened steel plates It is upper to be reserved for the hole 2-1 and the hole 2-2 passed through for chord member that presstressed reinforcing steel passes through respectively.Then along binder direction, in binder Arch springing arch camber outboard angle point of intersection arranges skeleton stirrup under top boom, arranges skeleton stirrup every 2m later, with 60 × 60 × The equal leg angle of 5mm is as skeleton diagonal bar.
Step 3: assembled arch springing arch camber stiff skeleton is sequentially connected chord member 1-1, skeleton stirrup 1-4, skeleton brace 1-5, makes Arch springing arch camber stiff skeleton forms entirety.Specifically: the angle of spring line computed in advance, in binder skeleton close to the section of steel plate In contact plate, along spring line angle angle cleat as arch rib skeleton outermost angle steel, along parallel with arch rib skeleton outermost angle steel Direction be sequentially connected angle steel skeleton, the direction vertical with outermost angle steel connect stirrup angle steel as horizontal skeleton, and skeleton is oblique Bar still chooses angle steel, and skeleton hoop together is respectively set in the end of arch springing and steel pipe interface and steel pipe respectively in horizontal skeleton Muscle.
Step 4: in the outermost of arch springing arch camber stiff skeleton and close to the pre-buried extension position of steel pipe, it is fixed that installation is respectively set Position steel pipe horizontal skeleton, and in horizontal skeleton install positioning steel tube adjusting bolt.It adjusts bolt and is included in arch springing It installs down, control on arch rib and steel pipe intersection and the stiff skeleton stirrup of steel pipe end, adjustment bolt in the front-back direction, and Just stubborn bolt.
Step 5: erection construction falsework is laid with bed die, pre-splicing good arch springing arch camber stiff skeleton integral hoisting is arrived Protective layer cushion block is installed in position, then arranges tie-rod presstressed reinforcing steel 1-2, installs arch springing embedded steel tube arch rib, it is allowed to put in arch springing 2.5m, and the adjusting bolt is adjusted, it tightens and fixes.
Step 6: arrangement tie-rod presstressed reinforcing steel pipeline, and fixed with " # " font and surrounding skeleton.
Step 7: installation side form is simultaneously fixed, casting concrete, demoulding two days later with split bolt, and maintenance is strong to design is reached Degree.
As the further preferred technical solution of the present invention, steel pipe glides in order to prevent, limits in the side welding support of steel pipe Position device.The limiting device for bracket includes being fixedly welded on the triangle bracket 9-2 of steel pipe side side and being set to institute State the lateral adjustment bolt 9-1 of the bottom triangle bracket 9-2.

Claims (7)

1. a kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure, which is characterized in that use arch springing arch camber stiffness Skeleton replaces arch springing complexity arrangement of reinforcement, is finely adjusted to carry out steel pipe elevation direction to steel pipe elevation direction using bolt is adjusted It is accurately positioned, including arch springing arch camber stiff skeleton, the outermost of the arch springing arch camber stiff skeleton and close to the pre-buried length of steel pipe At position, horizontal skeleton is respectively set, and the adjusting bolt of positioning steel tube is installed in horizontal skeleton;
The arch springing arch camber stiff skeleton includes chord member, skeleton stirrup, skeleton brace, skeleton vertical bar and gusset plate, wherein institute It states chord member, skeleton stirrup, skeleton brace, skeleton vertical bar and arch springing arch camber stiff skeleton is formed by gusset plate, in tie-rod end cloth Bearing stiffened steel plates are set, reserve the hole that chord member and presstressed reinforcing steel pass through respectively on overhang bracket stiffened steel plates.
2. Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure according to claim 1, which is characterized in that The chord member is Ribbed Bar.
3. Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure according to claim 1, which is characterized in that The skeleton brace, skeleton vertical bar are equal leg angle.
4. Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure according to claim 1, which is characterized in that In the side welding support limiting device of steel pipe.
5. Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure according to claim 4, which is characterized in that The limiting device for bracket includes being fixedly welded on the triangle bracket of steel pipe side side and being set to the triangle support The lateral adjustment bolt of frame bottom.
6. a kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe positioning construction method, which is characterized in that use chord member, bone Frame stirrup, skeleton brace, skeleton vertical bar and each gusset plate connect into arch springing arch camber stiff skeleton, at shared arch springing Stress, and the installation and adjustment bolt on arch springing arch camber stiff skeleton, are positioned and are fixed to the elevation angle of steel pipe at arch springing, specifically Including the following steps:
S1, the full-page proof according to corner of arch design arch springing arch camber stiff skeleton, to chord member, skeleton stirrup, skeleton brace, skeleton Vertical bar and each gusset plate carry out setting-out, and blanking;
S2, chord member, skeleton stirrup, skeleton brace, skeleton vertical bar are formed into arch springing arch camber stiff skeleton by gusset plate, and by end Portion's bearing stiffened steel plates are arranged in tie-rod end, reserve what chord member and presstressed reinforcing steel passed through respectively on overhang bracket stiffened steel plates Hole;
S3, the arch springing arch camber stiff skeleton for being sequentially connected chord member, skeleton stirrup, skeleton brace, skeleton vertical bar composition, play arch springing Arch stiff skeleton forms entirety;
S4: in the outermost of arch springing arch camber stiff skeleton and close to the pre-buried extension position of steel pipe, installation positioning steel tube is respectively set Horizontal skeleton, and in horizontal skeleton install positioning steel tube adjusting bolt;
S5: erection construction falsework is laid with bed die, in place by pre-splicing good arch springing arch camber stiff skeleton integral hoisting, installation Then protective layer cushion block arranges tie-rod presstressed reinforcing steel, install arch springing embedded steel tube arch rib, it is allowed to put in a distance in arch springing, And adjusting bolt is adjusted, tighten and is fixed;
S6: arrangement tie-rod presstressed reinforcing steel pipeline, and fixed with " # " font reinforcing bar and surrounding skeleton;
S7: installation side form is simultaneously fixed, casting concrete, demoulding two days later with split bolt, and maintenance is to reaching design strength.
7. Through Steel pipe concrete tie-rod arch bridge abutment steel pipe positioning construction method according to claim 6, feature It is, subregion is poured concrete in step S7, and prestressed pore passage position is avoided when vibrating.
CN201710282337.XA 2017-04-26 2017-04-26 A kind of Through Steel pipe concrete tie-rod arch bridge abutment steel pipe location structure and its construction method Active CN107142834B (en)

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CN110777634A (en) * 2019-10-27 2020-02-11 中交第四公路工程局有限公司 Construction method for pre-embedded section of arch rib of steel pipe arch bridge

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CN104389271B (en) * 2014-12-01 2016-05-11 中铁山桥集团有限公司 A kind of steel pipe concrete arch rib bridge arch pin is installed and is used stiffness support
CN204570492U (en) * 2015-03-30 2015-08-19 葛洲坝集团第五工程有限公司 Cable stayed bridge cable guide pipe detent mechanism
CN106480823B (en) * 2015-12-24 2018-04-06 中铁二局集团有限公司 Vaulted beam device and its localization method
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