CN107630409A - A kind of temporary T structure cantilever casting construction supporting construction and its manufacture method - Google Patents
A kind of temporary T structure cantilever casting construction supporting construction and its manufacture method Download PDFInfo
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- CN107630409A CN107630409A CN201711013523.XA CN201711013523A CN107630409A CN 107630409 A CN107630409 A CN 107630409A CN 201711013523 A CN201711013523 A CN 201711013523A CN 107630409 A CN107630409 A CN 107630409A
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 181
- 239000010959 steel Substances 0.000 claims abstract description 181
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000004567 concrete Substances 0.000 claims description 26
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000004873 anchoring Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000009417 prefabrication Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 235000001270 Allium sibiricum Nutrition 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The present invention provides a kind of temporary T structure cantilever casting construction supporting construction and its manufacture method, temporary T structure cantilever casting construction to be included with supporting construction：Outer steel shell, steel inner casing, skeleton reinforcing steel bar and packing material；The end face of the first end face of outer steel shell and the first end bay Cast-in-Situ Segment is relative, and the end face of the second end face of outer steel shell and the second end bay Cast-in-Situ Segment is relative；Steel inner casing is arranged in the inside of outer steel shell；Connected between outer steel shell and steel inner casing by skeleton reinforcing steel bar；Packing material is filled in the space between outer steel shell and the steel inner casing；Two sides of outer steel shell are provided with the groove through side.The problems such as temporary T structure cantilever casting construction provided by the invention solves conventional method quality with supporting construction to be ensured, remove cycle length, and work high above the ground risk is big, has the advantages that prefabricated quality is good, and assembling and disassembling is simple, and the engineering time is short, operating risk is small.
Description
Technical Field
The invention relates to the technical field of construction methods of highway and railway bridge structures, in particular to a support structure for temporary T-shaped suspension casting construction and a manufacturing method thereof.
Background
The continuous rigid frame bridge without support is a new bridge type developed in recent years, and compared with the traditional continuous beam (rigid frame) side pier provided with movable supports, the side pier adopts a pier-beam consolidation mode. In order to better adapt to the longitudinal telescopic deformation of the temperature load main beam, the side pier adopts a double-support thin-wall pier with smaller thrust rigidity, and the main beam is only fixedly connected with one thin-wall column. Through the research on related bridges at home and abroad, the continuous rigid frame without the support has the main characteristics that: (1) the support is not arranged, the support is prevented from being damaged, the cost is saved, the later maintenance cost is low, and the circuit shutdown caused by the support replacement is avoided; (2) the anti-seismic performance is good, the horizontal force can be uniformly distributed on each pier during earthquake, and the continuous girder bridge needs to be provided with braking piers or special anti-seismic supports; (3) the pier beams are directly connected in a fixed mode, lines are continuous and bright, the whole is coordinated, and the landscape effect is good.
Due to the existence of beam seams between adjacent beams, the temporary T-shaped structures are in tension butt joint, and the beam seams in the middle must be temporarily filled. The traditional method is temporary mortar filling, and chiseling is performed after construction is completed. The method mainly aims to ensure the construction quality, is very troublesome to chive, and has long overhead working period and high risk.
Disclosure of Invention
In order to overcome at least partially the above problems of the prior art, the present invention provides a support structure for temporary T-frame cantilever casting construction and a method for manufacturing the same.
According to an aspect of the present invention, there is provided a support structure for temporary T-frame cantilever casting construction, including: the steel shell, the steel inner shell, the framework steel bars and the filling materials; the first end face of the steel shell is opposite to the end face of the first side span cast-in-place section, and the second end face of the steel shell is opposite to the end face of the second side span cast-in-place section; the steel inner shell is arranged inside the steel outer shell; the steel outer shell and the steel inner shell are connected through the framework steel bars; the filling material fills a gap between the steel outer shell and the steel inner shell; two sides of the steel shell are provided with grooves penetrating through the sides.
Wherein, still include: the lifting rings are arranged at the symmetrical positions on two sides of the gravity center of the steel shell; wherein one end of the suspension ring is connected with a suspension ring anchoring nut arranged in the filling material.
Wherein, the end surface of the steel shell is provided with a through hole; the through hole sequentially penetrates through the first end face of the steel shell, the filling material and the second end face of the steel shell.
Wherein the filling material is concrete, and the strength of the concrete is not lower than C30; or the filling material is mortar, and the strength of the mortar is not lower than M30.
Wherein, still include: a reinforcing screw; one end of the reinforcing screw rod is connected with the top surface of the groove, and the other end of the reinforcing screw rod is connected with the bottom surface of the groove.
Wherein the width of the steel outer shell and the width of the steel inner shell are 10 cm-20 cm.
The steel outer shell and the steel inner shell are made of steel plates, and the thickness of each steel plate is 6-12 mm.
Wherein the cross-sectional shape of the steel inner shell is rectangular or polygonal.
According to another aspect of the present invention, there is provided a method of manufacturing a support structure for temporary T-frame cantilever casting construction, including: fixedly installing a prefabricated support structure between the first side span cast-in-place section and the second side span cast-in-place section; and a temporary high-strength thread thick steel bar penetrates through a through hole in the support structure to connect the first side span cast-in-place section and the second side span cast-in-place section.
The manufacturing method of the prefabricated support structure specifically comprises the following steps: s1, manufacturing a steel outer shell and a steel inner shell according to the cross-sectional shape of one end of the beam and the width of the beam seam; the cross section of the steel inner shell is rectangular or polygonal, and two side surfaces of the steel outer shell are both provided with grooves penetrating through the side surfaces; s2, connecting the steel outer shell and the steel inner shell into a whole by using skeleton steel bars, wherein the steel inner shell is arranged inside the steel outer shell; s3, arranging the hole channel filling rubber rod and the lifting ring anchoring nut on the framework steel bar, pouring a filling material in a gap between the steel outer shell and the steel inner shell, and maintaining to the designed strength; wherein the filling material is concrete, and the strength of the concrete is not lower than C30; or the filling material is concrete mortar, and the strength of the mortar is not lower than M30; and S4, screwing and fixing the screw rod of the lifting ring and the lifting ring anchoring nut, and simultaneously removing the hole channel filling rubber rod.
In summary, the supporting structure for temporary T-frame cantilever casting construction provided by the present invention comprises: the steel shell, the steel inner shell, the framework steel bars and the filling materials; the first end face of the steel shell is opposite to the end face of the first side span cast-in-place section, and the second end face of the steel shell is opposite to the end face of the second side span cast-in-place section; the steel inner shell is arranged inside the steel outer shell; the steel outer shell and the steel inner shell are connected through the framework steel bars; filling a gap between the steel outer shell and the steel inner shell with a filling material; two sides of the steel shell are provided with grooves penetrating through the sides. The supporting structure for temporary T-shaped structure suspension casting construction solves the problems that the quality is not guaranteed, the dismounting period is long, the high-altitude operation risk is high and the like in the traditional method, and has the advantages of being good in prefabrication quality, simple to mount and dismount, short in construction time, small in operation risk and the like.
Drawings
Fig. 1 is a schematic structural view of a support structure for temporary T-structure suspended casting construction according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural view of a support structure for temporary T-frame suspended casting construction according to an embodiment of the present invention, as shown in fig. 1, including: the steel shell comprises a steel shell 1, a steel inner shell 2, a framework steel bar 3 and a filling material 4; wherein,
the first end face of the steel shell 1 is opposite to the end face of the first side span cast-in-place section, and the second end face of the steel shell 1 is opposite to the end face of the second side span cast-in-place section;
the steel inner shell 2 is arranged inside the steel outer shell 1;
the steel outer shell 1 and the steel inner shell 2 are connected through the framework steel bars 3;
the filling material 4 is filled in the gap between the steel outer shell 1 and the steel inner shell 2;
two side faces of the steel shell 1 are provided with grooves penetrating through the side faces.
The inner and outer outlines of the cross section of the supporting structure are consistent with the outline of the end of the box girder;
preferably, the support structure is coated with a release agent on the side beam end interface.
Preferably, both side surfaces of the steel housing 1 are provided with grooves penetrating the side surfaces, and the shape of the grooves is a concave table shape.
The groove which is arranged on the side surface of the steel shell 1 and penetrates through the side surface and the beam end notch form a prestress tensioning construction space.
Preferably, the steel inner shell 2 is formed as a through hole extending through the support structure.
The embodiment provides a supporting structure for temporary T-shaped suspended casting construction, wherein a steel inner shell is arranged inside a steel outer shell; the steel outer shell and the steel inner shell are connected through a framework steel bar; filling the gap between the steel outer shell and the steel inner shell with a filling material; two sides of the steel shell are provided with grooves penetrating through the sides. The supporting structure for the temporary T-shaped structure suspension casting construction solves the problems that the quality of the traditional method is not guaranteed, the demolition period is long, the risk of high-altitude operation is high and the like, and has the advantages of being good in prefabrication quality, simple to install and demolish, short in construction time, small in operation risk and the like.
In another embodiment of the present invention, on the basis of the above embodiment, the method further includes: the lifting rings 5 are arranged at the symmetrical positions on two sides of the gravity center of the steel shell 1; wherein,
one end of the suspension ring 5 is connected to a suspension ring anchoring nut arranged in the filling material 4.
Specifically, the screw rod on the lifting ring and the lifting ring anchoring nut are screwed and fixed, so that the supporting structure can be lifted and lowered by using the lifting ring.
Preferably, 2 slings 5 are installed in the present embodiment, and the 2 slings 5 are symmetrically arranged.
This embodiment provides an interim T constructs to hang and waters bearing structure for construction, through setting up rings to detachable, the hoist and mount is accomplished the back detachable, guarantees that the bridge floor levels, makes things convenient for the operation.
In another embodiment of the present invention, on the basis of the above embodiment, the end face of the steel shell 1 is provided with a through hole 7; wherein,
the through hole 7 sequentially penetrates through the first end face of the steel shell 1, the filling material 4 and the second end face of the steel shell 1.
Wherein, the end face of the steel shell 1 is provided with a plurality of through holes 7, and the steel cable connects the beams at the two ends of the supporting structure together through the through holes 7.
In a further embodiment of the present invention, on the basis of the above embodiment, the filling material is concrete, and the strength of the concrete is not lower than C30; or,
the filling material is mortar, and the strength of the mortar is not lower than M30.
Wherein, the classification of concrete strength grade: the strength grade of the concrete is determined by a standard value (MPa) of the compressive strength of a concrete cube, and the symbol is represented by 'C'. The grades are divided into: the total of 12 grades are C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55 and C60.
Of course, different projects or concretes used in different parts have different requirements on the strength and the like of the concrete; wherein,
(1) C7.5-C15 are mainly used for cushions, foundations, terraces and structures with low stress.
(2) C15-C25 are used for common reinforced concrete structures such as beams, plates, columns, stairs, roof trusses and the like.
(3) And C25-C30 are used for large-span structures and have high requirements on durability.
(4) And more than C30 is used for prestressed reinforced concrete members, dynamic load bearing structures, special structures and the like.
Preferably, the filling material is concrete in this embodiment.
In another embodiment of the present invention, on the basis of the above embodiment, the method further includes: a reinforcing screw 6; wherein,
one end of the reinforcing screw 6 is connected with the top surface of the groove, and the other end of the reinforcing screw 6 is connected with the bottom surface of the groove.
This embodiment provides a temporary T constructs to hang and waters bearing structure for construction, and the one end of strengthening the screw rod is connected with the top surface of recess, and the other end of strengthening the screw rod is connected with the bottom surface of recess, strengthens the wholeness of structure on the one hand, safety railing when being the construction on the one hand.
In another embodiment of the present invention, based on the above embodiment, the width of the steel outer shell 1 and the width of the steel inner shell 2 are 10cm to 20 cm.
Wherein, the width of the steel outer shell 1 and the width of the steel inner shell 2 are consistent with the width of the beam seam.
Preferably, the width of the steel outer shell 1 and the steel inner shell 2 is 10 cm; or the width of the steel outer shell 1 and the width of the steel inner shell 2 are 20 cm; alternatively, the width of the steel outer shell 1 and the steel inner shell 2 is 15cm.
In another embodiment of the present invention, on the basis of the above embodiment, the material of the steel outer shell 1 and the steel inner shell 2 is a steel plate, and the thickness of the steel plate is 6mm to 12 mm.
Specifically, the thickness of the steel plate was 6 mm; or the thickness of the steel plate is 12 mm; alternatively, the thickness of the steel plate is 8 mm.
The embodiment provides a temporary support structure for T-shaped suspended casting construction, wherein a steel outer shell and a steel inner shell are made of steel plates, and the thickness of each steel plate is 6-12 mm. Not only ensures that enough supporting area is left between the steel inner shell and the steel outer shell, but also can reserve enough inner construction space. Meanwhile, the whole weight of the supporting structure is reduced, and the hoisting requirement is lowered.
In another embodiment of the present invention, based on the above embodiment, the cross-sectional shape of the steel inner shell 2 is rectangular or polygonal.
Preferably, the steel inner shell 2 is rectangular in cross-section in this embodiment.
Preferably, the support structure in this embodiment contains 2 through holes with rectangular cross-sections.
In one embodiment of the present invention, there is provided a method of manufacturing a support structure for temporary T-frame cantilever casting construction, including:
fixedly installing a prefabricated support structure between the first side span cast-in-place section and the second side span cast-in-place section; and a temporary high-strength thread thick steel bar penetrates through a through hole in the support structure to connect the first side span cast-in-place section and the second side span cast-in-place section.
Specifically, a temporary support structure which is prefabricated by mechanical hoisting is arranged between a first side span cast-in-place section and a second side span cast-in-place section, and isolating agents are coated on two end surfaces of the temporary support structure;
preferably, the first side span cast-in-place section and the second side span cast-in-place section are provided with reserved pore canals for temporary high-strength thread thick reinforcing steel bars to pass through.
The embodiment provides a manufacturing method of a temporary T-shaped structure suspension casting supporting structure, solves the problems that the quality is not guaranteed, the demolition period is long, the high-altitude operation risk is high and the like in the traditional method, and has the advantages of being good in prefabrication quality, simple to install and demolish, short in construction time, small in operation risk and the like.
In another embodiment of the present invention, based on the above embodiment, the manufacturing method of the prefabricated support structure specifically includes:
s1, manufacturing a steel outer shell and a steel inner shell according to the cross-sectional shape of one end of the beam and the width of the beam seam; wherein,
the section of the steel inner shell is rectangular or polygonal, and two side surfaces of the steel outer shell are both provided with grooves penetrating through the side surfaces;
the inner and outer outlines of the cross section of the supporting structure are consistent with the outline of the end of the box girder;
preferably, the support structure is coated with a release agent on the side beam end interface.
Preferably, both side surfaces of the steel shell are provided with grooves penetrating through the side surfaces, and the shape of each groove is a concave platform shape.
The groove which is arranged on the side surface of the steel shell and penetrates through the side surface and the beam end notch form a prestress tensioning construction space.
Preferably, the steel inner shell is surrounded in the shape of a through hole, penetrating the support structure.
Wherein, bearing structure still includes: a reinforcing screw; one end of the reinforcing screw rod is connected with the top surface of the groove, and the other end of the reinforcing screw rod is connected with the bottom surface of the groove.
S2, connecting the steel outer shell and the steel inner shell into a whole by using skeleton steel bars, wherein the steel inner shell is arranged inside the steel outer shell;
s3, arranging the hole channel filling rubber rod and the lifting ring anchoring nut on the framework steel bar, pouring a filling material in a gap between the steel outer shell and the steel inner shell, and maintaining to the designed strength; wherein,
the filling material is concrete, and the strength of the concrete is not lower than C30; or the filling material is concrete mortar, and the strength of the mortar is not lower than M30;
wherein, the end surface of the steel shell is provided with a through hole; the through hole sequentially penetrates through the first end face of the steel shell, the filling material and the second end face of the steel shell.
The end face of the steel shell is provided with a plurality of through holes, and the steel cables connect the beams at the two ends of the supporting structure together through the through holes.
Wherein, the classification of concrete strength grade: the strength grade of the concrete is determined by a standard value (MPa) of the compressive strength of a concrete cube, and the symbol is represented by 'C'. The grades are divided into: the total of 12 grades are C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55 and C60.
Of course, different projects or concretes used in different parts have different requirements on the strength and the like of the concrete; wherein,
(1) C7.5-C15 are mainly used for cushions, foundations, terraces and structures with low stress.
(2) C15-C25 are used for common reinforced concrete structures such as beams, plates, columns, stairs, roof trusses and the like.
(3) And C25-C30 are used for large-span structures and have high requirements on durability.
(4) And more than C30 is used for prestressed reinforced concrete members, dynamic load bearing structures, special structures and the like.
Preferably, the filler material selected in this embodiment is concrete.
And S4, screwing and fixing the screw rod of the lifting ring and the lifting ring anchoring nut, and simultaneously removing the hole channel filling rubber rod.
Specifically, the lifting ring can lift and lower the support structure by screwing and fixing the screw rod on the lifting ring and the lifting ring anchoring nut.
Preferably, 2 hanging rings are installed in the present embodiment, and the 2 hanging rings are symmetrically arranged. Through setting up rings to detachable, the hoist and mount is dismantled after accomplishing, guarantees that the bridge floor levels, makes things convenient for the operation.
The embodiment provides a manufacturing method of a supporting structure for temporary T-shaped suspended casting construction, wherein a steel inner shell is arranged inside a steel outer shell; the steel outer shell and the steel inner shell are connected through a framework steel bar; filling the gap between the steel outer shell and the steel inner shell with a filling material; two sides of the steel shell are provided with grooves penetrating through the sides. The manufacturing method of the temporary T-shaped structure without the support and the continuous rigid frame side span solves the problems that the quality is not guaranteed, the demolition period is long, the high-altitude operation risk is high and the like in the traditional method, and has the advantages of being good in prefabrication quality, simple to install and demolish, short in construction time, small in operation risk and the like.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The utility model provides a support structure for construction is watered to interim T structure suspension which characterized in that includes: the steel shell, the steel inner shell, the framework steel bars and the filling materials;
the first end face of the steel shell is opposite to the end face of the first side span cast-in-place section, and the second end face of the steel shell is opposite to the end face of the second side span cast-in-place section;
the steel inner shell is arranged inside the steel outer shell;
the steel outer shell and the steel inner shell are connected through the framework steel bars;
the filling material fills a gap between the steel outer shell and the steel inner shell;
two sides of the steel shell are provided with grooves penetrating through the sides.
2. The support structure for temporary T-frame suspended casting construction according to claim 1, further comprising: the lifting rings are arranged at the symmetrical positions on two sides of the gravity center of the steel shell; wherein,
one end of the suspension ring is connected with a suspension ring anchoring nut arranged in the filling material.
3. A temporary T-frame cantilever construction supporting structure according to claim 1, wherein the end face of the steel shell is provided with a through hole; wherein,
the through holes sequentially penetrate through the first end face of the steel shell, the filling material and the second end face of the steel shell.
4. A support structure for temporary T-frame suspended casting construction according to claim 1, wherein the filler is concrete having a strength of not less than C30; or,
the filling material is mortar, and the strength of the mortar is not lower than M30.
5. The support structure for temporary T-frame suspended casting construction according to claim 1, further comprising: a reinforcing screw; wherein,
one end of the reinforcing screw rod is connected with the top surface of the groove, and the other end of the reinforcing screw rod is connected with the bottom surface of the groove.
6. The support structure for temporary T-frame suspended casting construction according to claim 1, wherein the width of the outer and inner steel shells is 10-20 cm.
7. The temporary T-shaped suspension casting construction supporting structure as claimed in claim 1, wherein the outer and inner steel shells are made of steel plates, and the thickness of the steel plates is 6mm to 12 mm.
8. A temporary T-frame cantilever construction supporting structure according to claim 1, wherein the cross-sectional shape of the steel inner shell is rectangular or polygonal.
9. A manufacturing method of a supporting structure for temporary T-shaped suspended casting construction is characterized by comprising the following steps:
fixedly installing a prefabricated support structure between the first side span cast-in-place section and the second side span cast-in-place section; and a temporary high-strength thread thick steel bar penetrates through a through hole in the support structure to connect the first side span cast-in-place section and the second side span cast-in-place section.
10. A method for manufacturing a temporary T-structure according to claim 9, characterized in that the prefabricated support structure is manufactured in particular by:
s1, manufacturing a steel outer shell and a steel inner shell according to the cross-sectional shape of one end of the beam and the width of the beam seam; wherein,
the section of the steel inner shell is rectangular or polygonal, and two side surfaces of the steel outer shell are both provided with grooves penetrating through the side surfaces;
s2, connecting the steel outer shell and the steel inner shell into a whole by using skeleton steel bars, wherein the steel inner shell is arranged inside the steel outer shell;
s3, arranging the hole channel filling rubber rod and the lifting ring anchoring nut on the framework steel bar, pouring a filling material in a gap between the steel outer shell and the steel inner shell, and maintaining to the designed strength; wherein,
the filling material is concrete, and the strength of the concrete is not lower than C30; or the filling material is concrete mortar, and the strength of the mortar is not lower than M30;
and S4, screwing and fixing the screw rod of the lifting ring and the lifting ring anchoring nut, and simultaneously removing the hole channel filling rubber rod.
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| CN201711013523.XA CN107630409B (en) | 2017-10-26 | 2017-10-26 | Supporting structure for temporary T-shaped structure suspension casting construction and manufacturing method thereof |
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|---|---|---|---|---|
| CN115288025A (en) * | 2022-08-16 | 2022-11-04 | 江苏省交通工程集团有限公司 | Auxiliary mounting structure of easy-to-dismount and adjustable temporary supporting seat for steel box girder and construction process of auxiliary mounting structure |
| CN115288025B (en) * | 2022-08-16 | 2023-09-19 | 江苏省交通工程集团有限公司 | Easy-to-detach adjustable temporary support seat auxiliary installation structure for steel box girder and construction process thereof |
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| Publication number | Publication date |
|---|---|
| CN107630409B (en) | 2023-07-25 |
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