CN212294298U - Stiff skeleton arch steel pipe segment quick locking temporary connection structure - Google Patents
Stiff skeleton arch steel pipe segment quick locking temporary connection structure Download PDFInfo
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- CN212294298U CN212294298U CN201922494334.XU CN201922494334U CN212294298U CN 212294298 U CN212294298 U CN 212294298U CN 201922494334 U CN201922494334 U CN 201922494334U CN 212294298 U CN212294298 U CN 212294298U
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Abstract
The utility model provides a strength nature skeleton encircles steel pipe segment section and locks interim connection structure fast to effectively avoid setting up ring flange and interim knot cable in steel pipe joint department, showing when not influencing structural reinforcement and arranging and intraductal concrete placement and accelerating steel pipe and encircle strength nature skeleton installation rate, convenient construction greatly reduces the construction risk of steel pipe bow member cantilever installation. Treat the coupling pipe festival in the left side, the right side is treated the coupling pipe festival and is the same circular hollow steel pipe of external diameter, set up corresponding temporary connection support along the even interval of hoop on its adjacent tip, each temporary connection support comprises stiffening lug plate and anchor bedplate, the coupling pipe festival is treated with the left side to stiffening lug plate and the axial extension, the coupling pipe festival welding is treated on the right side, the tip of anchor bedplate welding at both sides stiffening lug plate, there is the clearance between the face of each group's both sides anchor bedplate that corresponds, it fills up to set up the backing plate in this clearance, high strength bolt passes the bolt hole on the corresponding anchor bedplate and screws up one end spiral shell and forms a set of quick lock temporary connection structure.
Description
Technical Field
The utility model relates to a bridge engineering, in particular to be applicable to the temporary connection structure of quick locking between strength nature skeleton concrete arch bridge steel pipe arch rib festival section, erect the structure measure of steel pipe temporary connection locking between the festival section in can being used to the installation of steel pipe arch cantilever.
Background
In recent years, the construction of large-span bridges in mountain areas in China is rapidly developed, and a large number of large-span complex bridges with novel structures, complex technologies and high construction difficulty are built. Due to the complex topography and topography, the mountainous area bridge most typically spans deep valleys and mountains and belongs to a large-span arch bridge, and the smooth arching of steel tube arch ribs is particularly critical no matter the steel tube arch bridge is a reinforced concrete arch bridge or a steel tube concrete arch bridge with a stiff framework. The steel pipe arch rib is erected by adopting a method of installing a segmental stay cable buckle hanging cantilever, however, the construction conditions in a complex and difficult mountain area are severe, how to accurately position and simply, reliably and quickly connect the high-altitude hoisted steel pipe segments, and the problem that the construction line shape of the arch rib must be ensured is solved.
The common connection mode between the steel pipe arch rib pipe joints at present mainly has following outer flange connection, interior flange connection, outsourcing tile pipe welding three kinds:
1. and (4) connecting an outer flange. The outer flange is also called a flange plate or a flange plate. Flanges are parts that interconnect pipes to pipes, connected to pipe ends. The flange connection is a detachable connection which is formed by connecting a flange, a gasket and a bolt with each other to form a group of combined sealing structures. The flanges are provided with holes, the flanges at two ends are tightly connected through bolts, and the flanges are sealed through gaskets. The structural form is generally applied to connection of various steel structure pipelines in municipal engineering due to the advantages of reliable stress, accurate positioning of anchoring points, convenient connection and the like, and is widely applied to connection of steel pipes of concrete-filled steel pipe arch bridges in bridge engineering. But the shortcoming lies in that the ring flange is located the steel pipe surface, and the steel construction is cyclic annular protruding, seriously influences bridge structures pleasing to the eye, and the view effect is poor.
2. And (4) connecting the inner flanges. As the name suggests, the inner flange is that the flange plate is arranged inside the steel pipe, and the steel pipe is butted in the pipe diameter range through flange connection. This structural style has flange joint's reliability concurrently, has avoided setting up proud surplus structure in the steel pipe outside again, guarantees the aesthetic property of bridge outward appearance. But the defects are that the inner flange occupies the clearance in the pipe, the concrete in the pipe is not easy to be filled compactly when being filled, the construction defects of pipe blockage, concrete and pipe wall separation and the like are easily caused, and the engineering quality is influenced.
3. And (5) welding an outer tile pipe. According to the structure, lining joint pipes are usually arranged at joints of steel pipe sections, after adjacent pipe sections are inserted and positioned, two or three tile pipe outer packages are adopted to hold the steel pipe joints, annular cladding is formed, then the tile pipe indirect seam welding is carried out to form an annular whole, an outer package hoop is formed at the steel pipe joints, and the steel pipe joints are connected. The connection form has a simple structure, a connection structure similar to a flange plate is not required to be arranged on the steel pipe, but the defects that the steel pipe segments are not directly connected to form a whole, but are attached and connected through the outer sleeve hoop, the integrity is relatively poor, the high-altitude welding operation on site is usually required, the precision and the quality are difficult to control, and the construction quality is not easy to guarantee.
In summary, in order to achieve smooth connection and installation of steel pipe joints with stiff frameworks, an extra steel structure needs to be arranged at a steel pipe joint in the existing connection method, if an outer flange is adopted, the appearance is affected, the arrangement of steel bars in concrete wrapped outside the stiff frameworks is disturbed, if an inner flange is adopted, the space in a pipe is affected, the concrete is difficult to pour compactly, the effective section of the steel pipe concrete is weakened, and the bearing capacity of structural design is affected. If the outer-covering tile pipe is adopted for welding, the connection is weak, and the integrity is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a strength nature skeleton encircles quick locking temporary connection structure of steel pipe festival section is provided to effectively avoid setting up ring flange and interim knot cable in steel pipe joint department, showing when not influencing structural reinforcement and arranging and intraductal concrete placement and accelerating steel pipe and encircle strength nature skeleton installation rate, convenient construction greatly reduces the construction risk of steel pipe bow member cantilever installation.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model relates to a strength nature skeleton encircles quick locking temporary connection structure of steel pipe festival section sets up in the adjacent tip of waiting to connect tube coupling, right side to treat the connecting tube coupling in the left side of joint line both sides, characterized by: treat the coupling pipe festival in the left side, the right side is treated the coupling pipe festival and is the same circular hollow steel pipe of external diameter, set up corresponding temporary connection support along the even interval of hoop on its adjacent tip, each temporary connection support comprises stiffening lug plate and anchor bedplate, axial extension's stiffening lug plate and left side are treated the coupling pipe festival, the coupling pipe festival welding is treated on the right side, the tip of anchor bedplate welding both sides stiffening lug plate, there is the clearance between the face of each both sides anchor bedplate that corresponds, it fills in to set up the backing plate in this clearance, high strength bolt passes the bolt hole that corresponds on the anchor bedplate and screws up one end spiral shell and forms a set of quick lock temporary connection structure.
The temporary connection support is respectively provided with four groups on the left pipe joint to be connected and the right pipe joint to be connected to form a cross stable connection structure.
The utility model has the advantages that the stiffening ear plate and the anchoring seat plate can be processed and manufactured in advance to be integrated with the main steel pipe, the high-altitude operation can quickly lock the stiff skeleton arch installation segment only through a small amount of temporary connection of bolts during hoisting, the construction is convenient and fast, and the safety risk is small; the pipe joints to be connected on the two sides are connected through bolts to form annular multi-point locking, so that stable support is provided for subsequent construction of welding seams between pipes; gaps are reserved between the anchoring seat plates, so that circumferential weld joints of the steel pipes can continuously pass through the gaps, and the welding construction of the steel pipes is not influenced; the temporary connection structural strength at least ensures the temporary locking stress requirement of the installation of the two sections of stiff frameworks, so that the hoisting of the stiff framework sections is not controlled by the permanent welding period between the pipe sections, the installation of the stiff frameworks is greatly accelerated, the installation time of stiff framework cantilevers is shortened, and the construction risk of the stiff framework cantilevers at the stage is greatly reduced; the structure is simple, the stress is reasonable, the force transmission is definite, and the characteristics of tensile strength of the bolt and shear resistance of the stiffened plate steel are fully exerted; the steel pipe is easy to remove in the later period, and the stiffening lug plates can be removed integrally by cutting along the surface of the steel pipe; the steel pipe is high in arrangement flexibility, can be freely arranged along the circumference of the steel pipe, and does not affect the positions of other main body components on the surface of the steel pipe; the adaptive type is stronger, and the butt joint is applicable to the butt joint between steel pipes with any pipe diameter.
Drawings
The specification includes the following four figures:
FIG. 1 is a schematic view of a quick locking temporary connection structure for steel pipe segments of a stiff skeleton arch of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is a front view of the present invention, illustrating a temporary connection structure for fast locking steel tube segments of stiff skeleton arch.
The figures show the components and corresponding references: a left pipe joint 10a to be connected, a right pipe joint 10b to be connected, an outer stiffening lug plate 11, a middle stiffening lug plate 12, an anchoring seat plate 13, a backing plate 14, a connecting bolt 15, a bolt hole 16, a nut 17 and a gap K
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1 to 3, the utility model relates to a strength nature skeleton encircles quick locking temporary connection structure of steel pipe festival section sets up in the left side of joint line both sides and treats the adjacent tip of connecting pipe festival 10a, right side treatment connecting pipe festival 10 b. Treat that the coupling 10a is treated on the left side, the coupling 10b is treated on the right side for the same circular hollow steel pipe of external diameter, set up corresponding temporary connection support along the even interval of hoop on its adjacent tip, each temporary connection support comprises stiffening lug plate and anchor bedplate 13, the coupling 10a is treated on axial extension's stiffening lug plate and left side, the coupling 10b welding is treated on the right side, anchor bedplate 13 welds the tip at both sides stiffening lug plate, there is clearance K between the face of each group's both sides anchor bedplate 13 that corresponds, set up backing plate 14 in this clearance K and fill, high strength bolt 15 passes bolt hole 16 and the screw up one end nut 17 formation a set of quick lock temporary connection structure on corresponding anchor bedplate 13.
Referring to fig. 1 and 2, the stiffening ear plate and the anchoring seat plate 13 are manufactured in advance in a pre-splicing field and are integrated with a main steel pipe (a left pipe joint 10a to be connected and a right pipe joint 10b to be connected), and only the high-strength bolt 15 needs to be installed during high-altitude operation during hoisting, so that quick locking can be realized, two sections of stiff frameworks are temporarily connected, construction is convenient and fast, safety risk is low, and stable support is provided for subsequent permanent welding construction between pipes.
Referring to fig. 1 and 3, the temporary connection support is generally provided with four groups on the left pipe joint 10a to be connected and the right pipe joint 10b to be connected, so as to form a cross-shaped stable connection structure, and provide stable support for subsequent construction of the welding seam between pipes. The structure has simple structure, reasonable stress and definite force transmission, and fully exerts the characteristics of tensile strength of the bolt 15 and shear resistance of the stiffened plate steel.
Referring to fig. 2, the thickness of the backing plate 14 is consistent with the installation gap between the left pipe joint 10a to be connected and the right pipe joint 10b to be connected, and a girth welding channel H is arranged between the inner side of the backing plate 14 and the outer walls of the left pipe joint 10a to be connected and the right pipe joint 10b to be connected, so that the requirement that the girth welding operation at the joint of the left pipe joint 10a to be connected and the right pipe joint 10b to be connected continuously passes through can be met, and the permanent welding construction of the pipe joint is not influenced.
Referring to fig. 3, the stiffening lugs include a pair of outer stiffening lugs 11 and an intermediate stiffening lug 12 therebetween, and a bolt hole 16 is formed in each of the surfaces of the anchor seat plate 13 between the outer stiffening lugs 11 and the intermediate stiffening lugs 12. Two nuts 17 are arranged at one end of the high-strength bolt 15, and after the two nuts 17 are screwed down, the nuts 17 and the high-strength bolt 15 are fixedly connected through spot welding, so that the nuts 17 are prevented from loosening and falling off from the high-strength bolt 15.
Referring to fig. 4, the steel pipe concrete arch bridge divide into a plurality of usually treat the connecting pipe festival, adopt the utility model discloses the shaping is assembled earlier with all pipe festivals to the structure that can convenient and fast, forms stable hunch structure after, connects permanent welding construction again, and two at least sections of installation that permanent welding can fall behind go on, do not influence the installation of follow-up strength nature skeleton, very big shortening construction cycle, shortened arch rib cantilever dead time, reduce strength nature skeleton arch cantilever installation construction risk by a wide margin.
Referring to fig. 2, after the circumferential weld at the steel pipe joint is completed, the outer stiffening lug plate 11 and the middle stiffening lug plate 12 can be cut off along the surface of the steel pipe, so that the temporary connection support can be integrally detached, redundant steel members are not left on the outer walls of the left to-be-connected pipe joint 10a and the right to-be-connected pipe joint 10b, and subsequent outsourcing concrete construction is not influenced.
The utility model discloses simple structure, the atress is reasonable, and it is clear and definite to pass power, full play bolt tensile strength, have the characteristics of installation swift, convenient, safety. The flexibility of arrangement is stronger, can make full use of steel pipe circumference free space reasonable arrangement, does not influence the main part component and arranges. The adaptive type is strong, and the device is suitable for the connection of steel pipes with any diameter and can be round pipes with any radius.
The applicant successfully applies the utility model to the design and construction of the Hu-Kun high-speed railway Bei Panjiang grand bridge. The bridge is a top bearing type concrete arch bridge (the first large span concrete arch bridge in the world) with a main span 445m, and a main arch is constructed by adopting a stiff framework method. Wherein, the steel pipe stiff skeleton adopts a diagonal pulling and buckling hanging method to assemble and construct the cantilever. Because the structural span is large, the number of hoisting sections is large, how to realize quick and safe construction, and high requirements are provided for locking and connecting systems among rigid framework sections. How to quickly and reliably complete the assembling construction of the stiff frameworks to form a stable arch structure system is a key step for ensuring the construction safety of the bridge. Adopt the utility model discloses an interim connection structure, it is firm to utilize otic placode + bolt to realize the quick locking between the bow member festival section, on the basis of effectively guaranteeing structure joint strength and stability, has practiced thrift about 30 tons of articulate steel and strength nature skeleton festival section and has detained the back of the body cable system temporarily. Through calculating, adopt the utility model discloses can practice thrift about 300 ten thousand of engineering cost, shorten construction period 2 months, reduce the bow member cantilever by a wide margin and put idle time, realize that the steel pipe encircles quick closure of strength nature skeleton, economic benefits and time limit for a project cost are showing.
The above description is only used for illustrating some principles of the fast locking temporary connection structure of the steel tube segment of stiff skeleton arch of the present invention, and it is not intended to limit the present invention to the specific structure and application range shown and described, so all the corresponding modifications and equivalents that may be utilized all belong to the patent scope applied by the present invention.
Claims (5)
1. The utility model provides a strength nature skeleton encircles quick locking temporary connection structure of steel pipe section, sets up in the left side of connecting seam both sides and treats adjacent tip of connecting pipe coupling (10a), right side and treat connecting pipe coupling (10b), characterized by: treat that coupling pipe section (10a) is treated on the left side, coupling pipe section (10b) is treated for the same circular hollow steel pipe of external diameter on the right side, set up corresponding temporary connection support along the even interval of hoop on its adjacent tip, each temporary connection support comprises stiffening lug plate and anchor bedplate (13), coupling pipe section (10a) is treated with the left side to stiffening lug plate and the axial extension, coupling pipe section (10b) welding is treated on the right side, anchor bedplate (13) welding is at the tip of both sides stiffening lug plate, there is clearance (K) between the face of each group's both sides anchor bedplate (13) that corresponds, set up backing plate (14) in this clearance (K) and pack, bolt hole (16) on corresponding anchor bedplate (13) are passed in high strength bolt (15) and screw up one end nut (17) and form a set of quick lock temporary connection structure.
2. A stiff framework arch steel tube segment quick lock temporary connection structure as set forth in claim 1, characterized by: the temporary connection support is respectively provided with four groups on the left pipe joint (10a) to be connected and the right pipe joint (10b) to be connected to form a cross stable connection structure.
3. A stiff framework arch steel tube segment quick lock temporary connection structure as set forth in claim 1, characterized by: the thickness of backing plate (14) is unanimous with the installation clearance between left side pipe coupling (10a), the right side pipe coupling (10b) of treating to be connected, and there is girth welding passageway (H) between the inboard and the left side pipe coupling (10a), the outer wall of right side pipe coupling (10b) of treating to be connected of backing plate (14).
4. A stiff framework arch steel tube segment quick locking temporary connection structure as set forth in claim 1, characterized by: the stiffening lug plate comprises a pair of outer stiffening lug plates (11) and a middle stiffening lug plate (12) positioned between the outer stiffening lug plates (11) and the middle stiffening lug plates (12), and a bolt hole (16) is respectively arranged between the outer stiffening lug plates (11) and the middle stiffening lug plates (12) on the plate surface of the anchoring base plate (13).
5. A stiff framework arch steel tube segment quick locking temporary connection structure as set forth in claim 1, characterized by: two nuts (17) are arranged at one end of the high-strength bolt (15), and after the two nuts (17) are screwed down, the nuts (17) and the high-strength bolt (15) are fixedly connected through spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494334.XU CN212294298U (en) | 2019-12-31 | 2019-12-31 | Stiff skeleton arch steel pipe segment quick locking temporary connection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494334.XU CN212294298U (en) | 2019-12-31 | 2019-12-31 | Stiff skeleton arch steel pipe segment quick locking temporary connection structure |
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| CN212294298U true CN212294298U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482625A (en) * | 2021-07-05 | 2021-10-08 | 石家庄铁道大学 | Rotation prevention protection method and device for pipe joints of pipe-jacking tunnel under external engineering disturbance |
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2019
- 2019-12-31 CN CN201922494334.XU patent/CN212294298U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482625A (en) * | 2021-07-05 | 2021-10-08 | 石家庄铁道大学 | Rotation prevention protection method and device for pipe joints of pipe-jacking tunnel under external engineering disturbance |
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