CN111576635A - First-sliding and then-hinging support and connecting method - Google Patents
First-sliding and then-hinging support and connecting method Download PDFInfo
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- CN111576635A CN111576635A CN202010363149.1A CN202010363149A CN111576635A CN 111576635 A CN111576635 A CN 111576635A CN 202010363149 A CN202010363149 A CN 202010363149A CN 111576635 A CN111576635 A CN 111576635A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 21
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a sliding-first hinge-later support and a connecting method. The method comprises the steps of firstly implementing a lower structure, reserving an embedded part in the lower structure, fixing the bottom of a sliding support on the lower structure through the embedded part, connecting an upper structure on the top of the sliding support, after the upper structure is implemented and released by horizontal force and stable in deformation, limiting the sliding support to move by adding a limiting device, enabling the limited sliding support to only rotate along the axial direction, and enabling the sliding support to be changed into a hinged support. The invention solves the problem that the connecting parts firstly meet the requirement of mutual sliding in the implementation process under the condition of complex stress, and releases the horizontal force and deformation of the interaction. In subsequent use, the sliding support is converted into the hinged support to enhance the stability of the structure and limit the mutual sliding of the sliding support, so that the final structure can eliminate the rigid connection damage in the implementation process and enhance the stability in the use process.
Description
Technical Field
The invention relates to a sliding-first hinge-later support and a connecting method.
Background
At present, the sliding support mainly has three forms of a fixed support, a hinged support and the sliding support, the design of the common support mainly adopts a single connection mode, and the process can not be converted after the design is set. In many building structures, the load is large in the construction process, the connection part of the upper structure and the lower structure generates large horizontal force and horizontal deformation, the horizontal force and the horizontal deformation can damage the lower connection member, the partial acting force must be released in the construction process, the process can be connected through a set sliding support, and most of the current designs adopt the single connection method. Because the overall stability of the sliding connection is relatively poor, and the horizontal force and the horizontal deformation are basically in a stable state after the construction is finished, if the sliding support connection is still adopted for design, the stability problem can be solved only by increasing the structural measures of the structure, the section of the rod piece and other measures. However, the supported structure forms a fixed support with a rigid structure, and cannot release bending moment, so that a support connection method capable of sliding first and then hinging is designed.
Disclosure of Invention
The invention solves the defects of the prior art and provides the sliding-first hinged support and the connecting method which can release the horizontal force and horizontal deformation generated by the connection between two different structures in the construction process, ensure the tight connection of the two structures in the use process and enhance the connection stability.
In order to solve the technical problem, a sliding-before-hinging support and a connecting method are provided, wherein a lower structure is implemented firstly, an embedded part is reserved in the lower structure, the bottom of a sliding support is fixed on the lower structure through the embedded part, an upper structure is connected to the top of the sliding support, and after the upper structure is implemented and horizontal force is released and deformation is stable, the sliding support is limited to move by adding a limiting device, so that the limited sliding support only rotates along the axial direction, and the sliding support is changed into a hinging support.
The first sliding is to allow the upper structure and the lower structure to slide in different directions with a certain value in the construction implementation process, in the connection part of two different structures, certain horizontal force and horizontal displacement are generated between the upper structure and the lower structure due to the load action in the implementation process, so that the acting force and the deformation are prevented from generating certain tensile fracture damage on the connection member, the acting force and the deformation of the part are released firstly, the connection is realized by arranging the sliding support, the later hinging is to realize that the mutual sliding is basically stable after the connection structure is implemented for a period of time, the sliding in the use process is limited, and the sliding support is converted into the hinged support. The support can transmit axial force and shearing force, does not transmit bending moment, is a hinged support, and therefore can eliminate rigid connection damage in the implementation process and enhance stability in the use process through connection mode conversion.
In the embodiment, the sliding support comprises an upper support plate, a lower support plate and a spherical crown plate, the upper support plate is fixed on an upper structure, the lower support plate is fixed on a lower structure, steel baffles are arranged around the upper side surface of the lower support plate to enable the upper side surface of the lower support plate to form a sliding groove for the spherical crown plate to slide, the top of the spherical crown plate is semi-spherical, the bottom of the spherical crown plate is a plane, a groove matched with the top of the spherical crown plate is arranged on one side of the upper support plate facing the lower support plate, the bottom of the spherical crown plate is arranged in the sliding groove of the lower support plate through a plane sliding plate to form a first sliding surface, the bottom of the upper support plate is connected on the spherical sliding plate at the top of the spherical crown plate through the groove in a sliding manner to form a second sliding surface, a gap not less than a preset sliding displacement value is arranged between the, the limiting device is inserted into the gap and supported between the upper support plate and the steel baffle plate, so that the radial movement of the upper support plate and the swing around the spherical crown plate are limited.
In this embodiment, stop device is the limiting plate, and after upper structure implementation was accomplished and horizontal force release was accomplished, the deformation is stable, measures the clearance of upper bracket board and every direction of steel bezel, according to the clearance preparation the limiting plate will correspond the limiting plate of thickness and insert the clearance of upper bracket board and every direction of steel bezel to the radial movement of restriction sliding support and the swing around the spherical crown board.
In this embodiment, an elastic layer is disposed on a contact surface of the limiting plate and the spherical crown plate.
The embodiment also comprises a support which slides and hinges firstly, and comprises a sliding support arranged between the connection surfaces of the upper structure and the lower structure and a limiting plate arranged in the sliding support, wherein the sliding support comprises an upper support plate, a lower support plate and a spherical crown plate, the upper support plate is fixed on the upper structure, the lower support plate is fixed on the lower structure, steel baffles are arranged on the periphery of the upper side surface of the lower support plate to enable the upper side surface of the lower support plate to form a sliding groove for the spherical crown plate to slide, the top of the spherical crown plate is semi-spherical, the bottom surface of the spherical crown plate is a plane, a groove matched with the top of the spherical crown plate is arranged on one side of the upper support plate, the bottom of the spherical crown plate is arranged in the sliding groove of the lower support plate through a plane sliding plate to form a first sliding surface, and the bottom of the upper support plate is connected on the spherical sliding plate at the, the ball crown plate comprises an upper support plate and a steel baffle plate, wherein a gap which is not smaller than a preset sliding displacement value is formed between the upper support plate and the steel baffle plate, a limiting plate is matched with the gap in size, and the limiting plate is inserted into the gap and supported between the upper support plate and the steel baffle plate, so that the radial movement of the upper support plate and the swinging around the ball crown plate are limited.
In the present embodiment, the designed values of the compressive strength of the spherical sliding plate and the planar sliding plate are not less than 60MPa, and the limit value of the compressive strength is not less than 200 MPa.
In this embodiment, a layer of smooth stainless steel plate is disposed between the planar sliding plate and the lower support plate.
In this embodiment, a gap is also provided between the steel baffle and the spherical crown plate, and the width of the gap is greater than a preset sliding displacement value by at least 100 mm.
In this embodiment, the limiting plate adopts the material to be Q345B steel sheet, one side and the steel baffle fixed connection of limiting plate, the opposite side sets up the flexible top of elasticity composite sheet and upper bracket board tightly.
The invention has the advantages that:
(1) through the conversion of sliding firstly and then hinging, the connection requirements of different periods in the construction process and the use process are met.
(2) The sliding connection is adopted in the construction process, horizontal force and horizontal deformation are released, damage of an upper structure to a lower structure is reduced, and the connection reliability is ensured. Then carry on spacingly through stop device to slip radial movement and swing to convert sliding connection into articulated connection, can strengthen the stability of structure like this in the use, especially under earthquake action and wind load effect, the stability of articulated connection is stronger than sliding connection, plays the effect that material saving reduces the investment.
In conclusion, the invention solves the problem that the connecting parts meet the requirement of mutual sliding in the implementation process firstly under the complex stress condition, and releases the horizontal force and deformation of the interaction. The invention has the advantages of clear design principle, simple construction process, convenient installation, environmental protection, and strong applicability and wide popularization value through simplified operation.
Drawings
FIG. 1 is a schematic view of the connection of the upper structure and the lower structure of the present invention;
FIG. 2 is an enlarged view of the connection between the upper structure and the lower structure of FIG. 1;
FIG. 3 is a front view of the shoe of the present invention;
FIG. 4 is a top view of the shoe of the present invention;
FIG. 5 is a front view of the pivoting support of the present invention;
FIG. 6 is an enlarged view of the spacing device of the present invention disposed within a sliding support;
in the figure, 1, an upper structure, 2, a sliding support, 3, a lower structure, 4, an upper support plate, 5, a spherical sliding plate, 6, a lower support plate, 7, a stainless steel plate, 8, a plane sliding plate, 9, a spherical crown plate, 10, a steel baffle plate, 11 and a limiting plate.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example (b):
as shown in fig. 1 to 6, a support with sliding and hinge after sliding comprises a sliding support and a limiting plate 11, wherein the sliding support 2 comprises an upper support plate 4, a lower support plate 6 and a spherical crown plate 9, the upper support plate 4 is fixed on an upper structure 1, the lower support plate 6 is fixed on a lower structure 3, a steel baffle plate 10 is arranged around the upper side surface of the lower support plate 6, so that a sliding groove for the spherical crown plate 9 to slide is formed on the upper side surface of the lower support plate 6, the top of the spherical crown plate 9 is semi-spherical, the bottom surface of the spherical crown plate 9 is a plane, a groove matched with the top of the spherical crown plate 9 is arranged on one side of the upper support plate 4 facing the lower support plate 6, the bottom of the spherical crown plate 9 is arranged in the sliding groove of the lower support plate 6 through a plane sliding plate 8 to form a first sliding surface, the bottom of the upper support plate 4 is connected on the spherical sliding, be equipped with between upper bracket board 4 and the steel baffle 10 not less than the clearance of predetermineeing the slip displacement value, limiting plate 11 with the clearance size phase-match, limiting plate 11 cartridge in the clearance, support between upper bracket board 4 and steel baffle 10 to the radial movement of injecing upper bracket board 4 and the swing around spherical crown plate 9.
In this embodiment, the design value of the compressive strength of spherical sliding plate and planar sliding plate is not less than 60MPa, the limit value of the compressive strength is not less than 200MPa, a layer of 2 mm-thick smooth stainless steel plate is arranged between the planar sliding plate and the lower support plate, a gap is also arranged between the steel baffle plate and the spherical crown plate, the width of the gap is greater than the preset sliding displacement value of at least 100mm, so as to ensure the installation of the limiting plate, the limiting plate is made of a Q345B steel plate, one side of the limiting plate is fixedly connected with the steel baffle plate, and the other side of the limiting plate is provided with an elastic composite plate with the thickness of 2mm and is flexibly.
A first-sliding and then-hinging support and a connecting method thereof are specifically implemented as follows:
a. the sliding support is designed and processed, and the processing and the manufacturing of the sliding support 2 mainly control the control of the rotating angle and the sliding clearance amount, so that the design requirement is met.
b. The lower structure 3 is implemented, an embedded part is reserved in the lower structure 3, and a lower support plate 6 of the sliding support 2 is welded to the embedded part, so that the sliding support 2 and the lower structure 3 are firmly installed;
c. the upper structure 1 is connected to the upper surface of the sliding support 2, the sliding support 2 meets the function of relative sliding of the upper structure 1 and the lower structure 3, and the horizontal force and horizontal deformation of the lower structure generated in the construction process of the upper structure 1 are released.
d. After the upper structure 1 is implemented, a stable structure system is formed, and after a certain time change, the horizontal force release is completed under the action of various loads, so that the deformation tends to be stable. And the deformation of the side measuring support in each direction is recorded.
e. The stopper plate 11 is manufactured based on the measured deformation amount.
f. Installing a limit plate 11, plugging the limit plate 11 into a gap between an upper support plate 4 and a steel baffle 10 of the sliding support 2, limiting the radial movement of the upper support plate and the swing around the spherical crown plate, but not limiting the rotation function, and meeting the requirements of the hinged support.
g. And carrying out anticorrosive and antirust treatment on the support.
Referring to fig. 5 and 6, after the sliding support is changed into the hinged support, the stability of the structure can be enhanced in the using process, particularly under the action of earthquake and wind load, the stability of the hinged connection is stronger than that of the sliding connection, and the effects of saving materials and reducing investment are achieved.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the specific embodiments described above, and various modifications can be made by those skilled in the art without departing from the technical idea of the present invention claimed in the claims.
Claims (9)
1. A first-sliding and then-hinging support and a connecting method are characterized in that: the method comprises the steps of firstly implementing a lower structure, reserving an embedded part in the lower structure, fixing the bottom of a sliding support on the lower structure through the embedded part, connecting an upper structure on the top of the sliding support, after the upper structure is implemented and released by horizontal force and stable in deformation, limiting the sliding support to move by adding a limiting device, enabling the limited sliding support to only rotate along the axial direction, and enabling the sliding support to be changed into a hinged support.
2. The slide-before-hinge support and connection method of claim 1, wherein: the sliding support comprises an upper support plate, a lower support plate and a spherical crown plate, the upper support plate is fixed on an upper structure, the lower support plate is fixed on a lower structure, steel baffles are arranged on the periphery of the upper side surface of the lower support plate to enable the upper side surface of the lower support plate to form a sliding groove for the spherical crown plate to slide, the top of the spherical crown plate is semi-spherical, the bottom of the spherical crown plate is a plane, a groove matched with the top of the spherical crown plate is arranged on one side of the lower support plate, the bottom of the spherical crown plate is arranged in the sliding groove of the lower support plate through a plane sliding plate to form a first sliding surface, the bottom of the upper support plate is connected on the spherical sliding plate on the top of the spherical crown plate through the groove in a sliding mode to form a second sliding surface, a gap not smaller than a preset sliding displacement value is arranged between the upper support plate and the steel baffles, a, and is supported between the upper support plate and the steel apron plate, thereby limiting the radial movement of the upper support plate and the swinging around the spherical crown plate.
3. The slide-before-hinge support and connection method of claim 2, wherein: the limiting device is a limiting plate, after the upper structure is implemented and the horizontal force is released and the deformation is stable, the gap between the upper support plate and the steel baffle in all directions is measured, the limiting plate is manufactured according to the gap, and the limiting plate with the corresponding thickness is inserted into the gap between the upper support plate and the steel baffle in all directions, so that the radial movement of the sliding support and the swinging around the spherical crown plate are limited.
4. The slide-before-hinge support and attachment method of claim 3, wherein: and an elastic layer is arranged on the contact surface of the limiting plate and the spherical crown plate.
5. The utility model provides an earlier support of hinge after slip which characterized in that: the sliding support comprises an upper support plate, a lower support plate and a spherical crown plate, the upper support plate is fixed on the upper structure, the lower support plate is fixed on the lower structure, steel baffles are arranged on the periphery of the upper side of the lower support plate, so that a sliding chute for the spherical crown plate to slide is formed on the upper side of the lower support plate, the top of the spherical crown plate is semi-spherical, the bottom of the spherical crown plate is a plane, a groove matched with the top of the spherical crown plate is arranged on one side of the upper support plate facing the lower support plate, the bottom of the spherical crown plate is arranged in the sliding chute of the lower support plate through a plane sliding plate to form a first sliding surface, the bottom of the upper support plate is connected on a spherical sliding plate at the top of the spherical crown plate through the groove in a sliding manner to form a second sliding surface, and a gap which is not smaller than a preset sliding displacement value is arranged between the upper support plate and, the limiting plate is matched with the gap in size, inserted into the gap and supported between the upper support plate and the steel baffle plate, so that the radial movement of the upper support plate and the swing around the spherical crown plate are limited.
6. The slide and hinge mount of claim 5, wherein: the design value of the compressive strength of the spherical sliding plate and the plane sliding plate is not less than 60MPa, and the limit value of the compressive strength is not less than 200 MPa.
7. The slide and hinge mount of claim 5, wherein: and a layer of smooth stainless steel plate is arranged between the plane sliding plate and the lower support plate.
8. The slide and hinge mount of claim 5, wherein: a gap is also arranged between the steel baffle plate and the spherical crown plate, and the width of the gap is larger than a preset sliding displacement value by at least 100 mm.
9. The slide and hinge mount of claim 5, wherein: the limiting plate is made of a Q345B steel plate, one side of the limiting plate is fixedly connected with the steel baffle, and the other side of the limiting plate is provided with an elastic composite plate which is tightly and flexibly propped against the upper support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363149.1A CN111576635A (en) | 2020-04-30 | 2020-04-30 | First-sliding and then-hinging support and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363149.1A CN111576635A (en) | 2020-04-30 | 2020-04-30 | First-sliding and then-hinging support and connecting method |
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| Publication Number | Publication Date |
|---|---|
| CN111576635A true CN111576635A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010363149.1A Pending CN111576635A (en) | 2020-04-30 | 2020-04-30 | First-sliding and then-hinging support and connecting method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233426B (en) * | 1961-10-12 | 1967-02-02 | Fritz Leonhardt Dr Ing | Tilting slide bearings for bridges or similar structures |
| US5597239A (en) * | 1994-10-04 | 1997-01-28 | Fip Industriale S.P.A. | Spheric cap bearing device for safely connecting elements of bridges, viaducts, buildings and the like |
| JP2008095346A (en) * | 2006-10-10 | 2008-04-24 | Kawaguchi Metal Industries Co Ltd | Steel bearing |
| KR101256829B1 (en) * | 2012-06-21 | 2013-04-23 | (주)알티에스 | Spherical bearing and plastic block with spherical surface for the same |
| CN103938552A (en) * | 2014-04-04 | 2014-07-23 | 中铁第四勘察设计院集团有限公司 | Self-balancing cantilevering construction method for large-span steel truss arch bridge and main pier limiting supports |
| CN204000582U (en) * | 2014-04-04 | 2014-12-10 | 中铁第四勘察设计院集团有限公司 | The spacing bearing of the main pier of steel truss arched bridge |
| CN204356644U (en) * | 2014-11-09 | 2015-05-27 | 衡水百金复合材料科技有限公司 | A kind of spacing sliding support |
| CN205259054U (en) * | 2015-11-30 | 2016-05-25 | 洛阳双瑞特种装备有限公司 | Spherical support for steel truss bridge |
| CN205857397U (en) * | 2016-06-13 | 2017-01-04 | 中建六局第三建筑工程有限公司 | A kind of slip support abutment of the structural steel vestibule that transfinites for Long-span Cantilever abnormity |
-
2020
- 2020-04-30 CN CN202010363149.1A patent/CN111576635A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233426B (en) * | 1961-10-12 | 1967-02-02 | Fritz Leonhardt Dr Ing | Tilting slide bearings for bridges or similar structures |
| US5597239A (en) * | 1994-10-04 | 1997-01-28 | Fip Industriale S.P.A. | Spheric cap bearing device for safely connecting elements of bridges, viaducts, buildings and the like |
| JP2008095346A (en) * | 2006-10-10 | 2008-04-24 | Kawaguchi Metal Industries Co Ltd | Steel bearing |
| KR101256829B1 (en) * | 2012-06-21 | 2013-04-23 | (주)알티에스 | Spherical bearing and plastic block with spherical surface for the same |
| CN103938552A (en) * | 2014-04-04 | 2014-07-23 | 中铁第四勘察设计院集团有限公司 | Self-balancing cantilevering construction method for large-span steel truss arch bridge and main pier limiting supports |
| CN204000582U (en) * | 2014-04-04 | 2014-12-10 | 中铁第四勘察设计院集团有限公司 | The spacing bearing of the main pier of steel truss arched bridge |
| CN204356644U (en) * | 2014-11-09 | 2015-05-27 | 衡水百金复合材料科技有限公司 | A kind of spacing sliding support |
| CN205259054U (en) * | 2015-11-30 | 2016-05-25 | 洛阳双瑞特种装备有限公司 | Spherical support for steel truss bridge |
| CN205857397U (en) * | 2016-06-13 | 2017-01-04 | 中建六局第三建筑工程有限公司 | A kind of slip support abutment of the structural steel vestibule that transfinites for Long-span Cantilever abnormity |
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Application publication date: 20200825 |