CN109629420A - A kind of king-tower transverse brace structure and its installation method - Google Patents
A kind of king-tower transverse brace structure and its installation method Download PDFInfo
- Publication number
- CN109629420A CN109629420A CN201910019959.2A CN201910019959A CN109629420A CN 109629420 A CN109629420 A CN 109629420A CN 201910019959 A CN201910019959 A CN 201910019959A CN 109629420 A CN109629420 A CN 109629420A
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- Prior art keywords
- stull
- tower
- king
- transverse brace
- fulcrum
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Abstract
The invention discloses a kind of king-tower transverse brace structure and its installation methods, are related to field of bridge construction, including prefabricated processing transverse brace structure；Stull operating platform and stull side fulcrum structure are installed；Tower crane monolithic hoisting stull truss is to Bian Zhidian, by side fulcrum tensioning mud jacking；Stull connection system is installed.King-tower stull installation method of the invention uses the pre- piece of batch production, and the vertical raising of tower crane can be used when precision is high, integration is installed and connected after tower body anchoring part using pin shaft, and install convenient reduces high-altitude construction risk；It is supported simultaneously relative to conventional steel, the less investment of site machinery equipment and supplementary structure, it is only necessary to which king-tower, which carries tower crane, can be completed all operationss, not need setting bracket.
Description
Technical field
The present invention relates to bridge main tower stull technical field of construction, and in particular to a kind of king-tower transverse brace structure and its installation side
Method.
Background technique
Currently, in Cable stayed Bridge Main Tower work progress, need to be arranged on king-tower false stull, and conventional Cable stayed Bridge Main Tower
The setting of construction false stull mostly uses steel pipe support structure, is divided into two sections of liftings, and bushing pipe docking is set in two sections of centres, and outer patch adds
Strength plate reinforcement, installation accuracy requirement is low, and stress is smaller, and it is (hereinafter referred to as horizontal to need to be arranged the interim steel pipe bracing structure of multiple tracks
Support) to meet the requirement of king-tower Deformation control.Relevant steel frame supporting structure is on the basis of steel-frame structure, by portion
Arrangement between frame column is divided to support to improve structural bearing capacity and lateral rigidity.Support system is cooperatively formed with frame system
Dual lateral resisting structure system not only provides certain rigidity for structure under ordinary loading conditions, and is structure in water
Under flat geological process and larger wind action, twice stress defence line is provided, forms the comparatively ideal preventing mechanism of people.
Since the particular surroundings of bridge construction influences, the construction of Cable stayed Bridge Main Tower stull is generally required under strong wind atmosphere
It carries out.Under strong wind atmosphere, conventional steel pipe support structure mounting technique is had the disadvantages that
1. needing to set up assembling support in stull bushing pipe docking location, building and face using the mounting means of internal lining pipe docking
When facility investment it is larger；
2. needing setting aisle on steel pipe, to carry out steel pipe abutting joint, high altitude operation time length, risk are big；
3. steel pipe is attached with tower wall built-in fitting using welding form, the bending resistance of king-tower entirety is participated in, and be subjected to king-tower
The moment of flexure of transmitting, stress are larger；
4. using solder design between internal lining pipe and supervisor, outer patch stiffener carries out reinforcement, and weld job amount is big, and weld seam
Quality requirement is high；
5. single tube stress is smaller, multiple tracks steel pipe false stull need to be set to meet tower column deformation control and require, lift number
It is more, occupy Construction of Pylon resource.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of king-tower transverse brace structure and its installations
Method, can be relieved construction site lifting operation pressure, reduce offshore high-altitude operation, reach in harsh environments safety,
Efficiently, the purpose of rapid construction.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of king-tower stull installation method, comprising the following steps:
Prefabricated processing transverse brace structure；Stull operating platform and stull side fulcrum structure are installed；Tower crane monolithic hoisting stull purlin
Frame is to Bian Zhidian, by side fulcrum tensioning mud jacking；Stull connection system is installed.
Based on the above technical solution, when prefabricated processing, setting node board size is compared with increase 2cm at matching.
Based on the above technical solution, it is cut with scissors between the purlin piece of the stull truss and the side fulcrum using pin shaft
It connects.
Based on the above technical solution, the installation stull operating platform specifically includes: corresponding horizontal in king-tower king-post
When supportting the segmental construction of operating platform height, pre-buried stull operating platform built-in fitting；Installation stull operation after the completion of king-post construction
Platform.
Based on the above technical solution, installation stull side fulcrum structure specifically includes:
Side fulcrum reserving hole channel, stiffener mesh sheet, tower internal overarm support are buried when king-tower king-post corresponds to segmental construction climbs cone
Built-in fitting is hung with side fulcrum；After the completion of the king-post segment concrete construction, successively install side fulcrum suspension built-in fitting and
Side fulcrum structure.
Based on the above technical solution, described to specifically include side fulcrum tensioning mud jacking:
Stull side fulcrum anchoring part and fining twisted steel are installed to drawing pull rod；Tensioning fining twisted steel tie rods are to builder's tonnage；
By design requirement, support grouting material opposite side fulcrum reserving hole channel and tower wall gap using strength grade not less than M50 are pressed
Slurry.
The present invention also provides a kind of bridge main tower transverse brace structures, comprising:
Stull truss, the stull truss include crossbeam steel pipe column and connection system, the crossbeam in same level height
It is connected between steel pipe column by connection system；
The stull built-in fitting being connected with the stull truss, including pull rod, strut, bracket, climb cone and be fixedly installed on bridge
Anchoring part, the steel mesh of beam king-tower outer surface, it is described to climb the pre-buried setting of cone in bridge main tower, it is marked with concrete in the strut,
Be arranged on the bracket, the bracket be fixedly arranged on it is described climb cone, the pull rod is arranged in the gap of the steel mesh and anchoring part
In；The strut is located at bridge main tower inner cavity hollow part；
Side fulcrum, mud jacking cutting, ear mount and shear connector including being set to bridge main tower surface, the ear mount and the bridge
The part of king-tower surface connection is equipped with the first connecting hole and the second connecting hole, and described shear connector one end passes through between the steel mesh
Gap, the other end pass through first connecting hole and are fixed on the ear mount；The pull rod passes through second connecting hole and the ear
Seat is fixedly connected；
The stull built-in fitting is connect with the stull truss by the side fulcrum pin axle.
Based on the above technical solution, the junction of the pull rod, strut and the ear mount/anchoring part passes through double nut
It is fixed.
Based on the above technical solution, the pull rod is finish rolling deformed bar, by seamless inside bridge main tower
The installation of steel pipe duct；The junction of the side fulcrum and the bridge main tower is equipped with Dispose by grouting layer.
It based on the above technical solution, further include the seamless steel pipe being connected to the mud jacking cutting, the seamless steel
Pipe is connected to by grout outlet with bridge main tower internal overarm support.
Compared with the prior art, the advantages of the present invention are as follows:
(1) king-tower transverse brace structure installation method of the invention uses the pre- piece of batch production, can when precision is high, integration is installed
It is connected after tower body anchoring part using pin shaft using the vertical raising of tower crane, install convenient, reduces high-altitude construction risk；Same phase
Conventional steel is supported, the less investment of site machinery equipment and supplementary structure, it is only necessary to which king-tower carries tower crane and can be completed
All operationss do not need setting bracket.
(2) king-tower transverse brace structure installation method of the invention adjusts side fulcrum anchoring part position by setting guide chain structure,
Keep side fulcrum anchoring part position control simple, positioning is more accurate, to reduce stull integral installation difficulty, improves under strong wind atmosphere
King-tower stull installation efficiency.
(3) in king-tower transverse brace structure of the invention, structure side fulcrum using " rod iron bear shear stress, fining twisted steel by
The structure type of drawing ", stress are simply clear；Simultaneously as the variation of side fulcrum structure, uses pin shaft between purlin piece and side fulcrum
Hingedly, king-tower moment of flexure is converted into axle power, significantly improves the stress performance of stull；Therefore, in practical process, this hair is used
One of stull need to be only arranged in the single seat king-tower of bright king-tower transverse brace structure construction, greatly reduce construction workload and construction risk.
Detailed description of the invention
Fig. 1 is the flow chart of king-tower stull construction method in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram that stull truss pier position lifts crane barge step in the embodiment of the present invention；
Fig. 3 is the interim storage platform layout drawing of stull truss in the embodiment of the present invention；
Fig. 4 is that stull operating platform and connection are layout drawing in the embodiment of the present invention；
Fig. 5 is stull side fulcrum scheme of installation in the embodiment of the present invention；
Fig. 6 is tower crane monolithic hoisting stull truss facade layout drawing in the embodiment of the present invention；
Fig. 7 is the structure sectional view of king-tower stull and side fulcrum junction in the embodiment of the present invention；
Fig. 8 is the structure top view of king-tower transverse brace structure in the embodiment of the present invention.
In figure: 1- truss element, 2- crane barge, the interim storage platform of 3-, the side 4- fulcrum, 5- guide chain, 6- built-in fitting, 7- stull
Operating platform, 8- connection system, 9- tower crane, 10- stull truss, 11- crossbeam steel pipe column, 12- pull rod, 13- strut, 14- anchoring part,
15- steel mesh, 16- bracket, 17- mud jacking cutting, 18- ear mount, 19- shear connector, 20- fixture nut, 21- Dispose by grouting layer, 22-
Seamless steel pipe, 23- grout outlet, 24- filling concrete area, 27- bridge main tower.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
The embodiment of the present invention provides a kind of king-tower stull installation method, comprising the following steps:
Prefabricated processing transverse brace structure；Stull operating platform and stull side fulcrum structure are installed；Tower crane monolithic hoisting stull purlin
Frame is to Bian Zhidian, by side fulcrum tensioning mud jacking；Stull connection system is installed.
Compared with prior art, by the present invention in that with the pre- piece of batch production, tower can be used when precision is high, integration is installed
Vertical raising is hung, after tower body anchoring part, is connected using pin shaft, install convenient, high-altitude construction risk is reduced；Simultaneously relative to biography
System steel pipe support, the less investment of site machinery equipment and supplementary structure, it is only necessary to which king-tower, which carries tower crane, can be completed whole behaviour
Make, does not need setting bracket.Therefore, structure of the invention more adapts to the construction demand under strong wind atmosphere compared with existing structure.
Specifically, a feasible embodiment of the present invention is each, and steps are as follows referring to shown in Fig. 1-Fig. 6:
Before implementing king-tower stull installation, when carrying out the construction of king-tower king-post segment, stull especially is set up estimated
King-tower king-post segmental construction when, it should be noted that the matching of related king-tower structure and transverse brace structure is carried out, such as in king-tower king-post and cross
When support structure respective heights segmental construction, pre-buried stull operating platform built-in fitting 6；And in Construction of Pylon to king-tower king-post and cross
It is the setting reserving hole channel of stull side fulcrum when support structure respective heights segment.
Before carrying out transverse brace structure installation, also to fulfil the manufacture of each component of transverse brace structure ahead of schedule, i.e., it in advance will be horizontal
Support structure divides two panels truss element 1 to carry out overall processing manufacture.Wherein, connection is 8 to be processed to entirety, and carry out with stull
With processing；Side fulcrum 4 matches processing in prefabrication process with stull, and carries out preassembling after processing is completed, pre-splicing in factory
Matching precision is controlled during dress, sufficiently to guarantee that side fulcrum 4 and stull matching precision are met the requirements.It preferably, can be in blanking
When by gusset plate larger 2cm, to facilitate joint connection in site system to install.
After the completion of manufacture, stull fragment is lifted to transport barge using large-scale floating crane 2, after transportation by driving to scene, lifting
To interim storage platform 3, preparation is constructed.
The transverse brace structure installation steps that construction site carries out include the following contents:
A, operating platform is installed: pre-buried stull operating platform built-in fitting 6 when the corresponding segmental construction of king-tower king-post, corresponding segment
Stull operating platform 7 is installed after the completion of king-post construction.During the installation process, need first to reserve the operating platform 7 within the scope of stull,
It goes again after stull installation is in place perfect.
B, stull while fulcrum install: fulcrum 4 when king-tower stull both sides are respectively provided with, Bian Zhidian 4 process when in advance factory with
Stull matching processing and preassembling.
C, tower crane monolithic hoisting stull truss: 50 tons or so of 1 weight of king-tower stull monolithic truss, during lifting, master is utilized
Two tower cranes 9 of tower or so width are by 1 monolithic hoisting of monolithic stull truss to designed elevation.4 position of side fulcrum is crossed in block bridging joint
When, operator station can be allowed to assist adjustment 4 position of side fulcrum on the operational platform, guarantee that stull truss 1 passes through side fulcrum
4.Fulcrum 4 position in side is then adjusted by guide chain 5, then the connection pin shaft of contraposition installation side fulcrum 4 and truss 1.Pacify in truss 1
After dress, tower crane decoupling device continues to complete the installation of another truss using same way.
D, Bian Zhidian tensioning mud jacking: installation stull side fulcrum anchoring part and fining twisted steel are to drawing pull rod, tensioning finish rolling screw thread
Reinforcing pull rod is to builder's tonnage.Then, mud jacking is carried out by 1 reserving hole channel of design requirement opposite side fulcrum and tower wall gap.Using support
Grouting material, strength grade are not less than M50, and when mud jacking, which must adopt an effective measure, ensures that reserving hole channel mud jacking is closely knit.
E, connection system installation: after two panels stull truss 1 is installed, the connection of tower crane truss hoisting is 8 in place, according to even
Connect is that gusset plate and the upper and lower chord member of stull truss 1 are welded and fixed physical location.
As shown in Figure 7, Figure 8, the present invention also provides a kind of king-tower transverse brace structures comprising:
Stull truss 10, the stull truss 10 includes crossbeam steel pipe column 11 and connection is 8, the cross in same level height
Passing through the connection between joist steel tubing string 11 is 8 connected；
The stull built-in fitting 6 being connected with stull truss 10, including pull rod 12, strut 13, climb cone, bracket 16 and fixed setting
Anchoring part 14, steel mesh 15 in 27 outer surface of bridge main tower, described to climb the pre-buried setting of cone in bridge main tower 27, the strut 13
It is arranged on the bracket 16, the bracket 16, which is fixedly arranged on, climbs cone, and the pull rod 12 is arranged in the steel mesh 15 and anchoring part 14
Gap in, and the strut 13 protrudes into the 27 inner cavity hollow part of bridge main tower；
Side fulcrum 4, including be set to 27 surface of bridge main tower mud jacking cutting 17, ear mount 18 and shear connector 19, ear mount 18 with
The part of 27 surface of the bridge main tower connection is equipped with the first connecting hole and the second connecting hole, and described 19 one end of shear connector passes through institute
15 gap of steel mesh is stated, the other end passes through the first connecting hole and is fixed on the ear mount 18；The pull rod 12 passes through described second and connects
Hole is connect to be fixedly connected with the ear mount 18；Stull built-in fitting 6 is connect with the stull truss 10 by 4 pin shaft of side fulcrum.
In a preferred embodiment, the junction of pull rod 12 and 18/ anchoring part 14 of ear mount can be passed through double fixed
Nut 20 is fixed, to enhance the fixed effect of stull truss 10.
In another preferred embodiment, pull rod 12 can be arranged using finish rolling deformed bar, inside king-tower
The installation of seamless steel pipe duct；And strut 13 is passed through into king-tower inner cavity hollow part, it is fixed on 16 top of bracket, can be perfused in strut 13
Concrete, the setting of strut 13 can enhance the rigidity of king-tower, and the deformation after avoiding king-post from setting up Cross stay is excessive；The fulcrum 4 on side
Dispose by grouting layer 21 is set with the junction of bridge main tower 27, pull rod 12 is stretched out from 27 side of bridge main tower, and is connected by second
It connects hole and ear mount 18 is fixed.
Optionally, the settable seamless steel pipe 22 being connected to mud jacking cutting 17, the seamless steel pipe 22 pass through a grout outlet
23 be connected to inside 27 internal overarm support 13 of bridge main tower, for strut 13 at box, internal is filling concrete area.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of king-tower transverse brace structure installation method, which comprises the following steps:
Prefabricated processing transverse brace structure；
Stull operating platform and stull side fulcrum structure are installed；
Tower crane monolithic hoisting stull truss is to Bian Zhidian, by side fulcrum tensioning mud jacking；
Stull connection system is installed.
2. king-tower transverse brace structure installation method as described in claim 1, it is characterised in that: when prefabricated processing, gusset plate is arranged
Size is compared with increase 2cm at matching.
3. king-tower transverse brace structure installation method as described in claim 1, it is characterised in that: the purlin piece of the stull truss and institute
It states hinged using pin shaft between the fulcrum of side.
4. king-tower transverse brace structure installation method as described in claim 1, which is characterized in that the installation stull operating platform tool
Body includes: the pre-buried stull operating platform built-in fitting when king-tower king-post corresponds to the segmental construction of stull operating platform height；King-post
Stull operating platform is installed after the completion of construction.
5. king-tower transverse brace structure installation method as described in claim 1, which is characterized in that installation stull side fulcrum structure
It specifically includes:
When king-tower king-post corresponds to segmental construction bury while fulcrum reserving hole channel, stiffener mesh sheet, tower internal overarm support climb cone and while
Fulcrum hangs built-in fitting；
After the completion of the king-post segment concrete construction, successively installation while fulcrum hang built-in fitting and while fulcrum structure.
6. king-tower transverse brace structure installation method as described in claim 1, which is characterized in that described to have side fulcrum tensioning mud jacking
Body includes:
Stull side fulcrum anchoring part and fining twisted steel are installed to drawing pull rod；
Tensioning fining twisted steel tie rods are to builder's tonnage；
By design requirement, support grouting material opposite side fulcrum reserving hole channel and tower wall gap using strength grade not less than M50 into
Row mud jacking.
7. a kind of bridge main tower transverse brace structure characterized by comprising
Stull truss, the stull truss include crossbeam steel pipe column and connection system, the crossbeam steel pipe in same level height
It is connected between column by connection system；
The stull built-in fitting being connected with the stull truss, including pull rod, strut, bracket, climb cone and be fixedly installed on bridge master
Anchoring part, the steel mesh of tower outer surface, it is described to climb the pre-buried setting of cone in bridge main tower, it is marked with concrete in the strut, is arranged
On the bracket, the bracket be fixedly arranged on it is described climb cone, the pull rod is arranged in the gap of the steel mesh and anchoring part；Institute
It states strut and is located at bridge main tower inner cavity hollow part；
Side fulcrum, mud jacking cutting, ear mount and shear connector including being set to bridge main tower surface, the ear mount and the bridge main tower
The part of surface connection is equipped with the first connecting hole and the second connecting hole, and described shear connector one end passes through the steel mesh gap, separately
One end passes through first connecting hole and is fixed on the ear mount；The pull rod passes through second connecting hole and fixes with the ear mount
Connection；
The stull built-in fitting is connect with the stull truss by the side fulcrum pin axle.
8. bridge main tower transverse brace structure as claimed in claim 7, it is characterised in that: the pull rod, strut and the ear mount/anchor
The junction of seat is fixed by double nut.
9. bridge main tower transverse brace structure as claimed in claim 7, it is characterised in that: the pull rod is finish rolling deformed bar, is led to
Cross the installation of the seamless steel pipe duct inside bridge main tower；The junction of the side fulcrum and the bridge main tower is equipped with Dispose by grouting
Layer.
10. bridge main tower transverse brace structure as claimed in claim 7, it is characterised in that: further include being connected to the mud jacking cutting
Seamless steel pipe, the seamless steel pipe is connected to by grout outlet with bridge main tower internal overarm support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019959.2A CN109629420A (en) | 2019-01-08 | 2019-01-08 | A kind of king-tower transverse brace structure and its installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019959.2A CN109629420A (en) | 2019-01-08 | 2019-01-08 | A kind of king-tower transverse brace structure and its installation method |
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ID=66061608
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| CN201910019959.2A Pending CN109629420A (en) | 2019-01-08 | 2019-01-08 | A kind of king-tower transverse brace structure and its installation method |
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Cited By (1)
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| CN110644363A (en) * | 2019-06-24 | 2020-01-03 | 高军 | Construction method of underwater main tower of cross-river cable-stayed bridge of high-speed railway |
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Application publication date: 20190416 |