CN107630409B - Supporting structure for temporary T-shaped structure suspension casting construction and manufacturing method thereof - Google Patents
Supporting structure for temporary T-shaped structure suspension casting construction and manufacturing method thereof Download PDFInfo
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- CN107630409B CN107630409B CN201711013523.XA CN201711013523A CN107630409B CN 107630409 B CN107630409 B CN 107630409B CN 201711013523 A CN201711013523 A CN 201711013523A CN 107630409 B CN107630409 B CN 107630409B
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000000725 suspension Substances 0.000 title claims abstract description 25
- 238000005266 casting Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 182
- 239000010959 steel Substances 0.000 claims abstract description 182
- 239000000463 material Substances 0.000 claims abstract description 37
- 230000000149 penetrating effect Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 11
- 238000011065 in-situ storage Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims 1
- 238000009417 prefabrication Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 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 invention provides a support structure for temporary T-shaped construction and a manufacturing method thereof, wherein the support structure for temporary T-shaped construction comprises the following components: steel outer shell, steel inner shell, skeleton steel bar and filling material; 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 skeleton steel bars; filling a gap between the steel outer shell and the steel inner shell with a filling material; both sides of the steel shell are provided with grooves penetrating through the sides. The support structure for temporary T-shaped structure suspension casting construction solves the problems that the quality of a traditional method is not easy to guarantee, the dismantling period is long, the risk of overhead operation is high, and the like, and has the advantages of good prefabrication quality, simplicity in installation and dismantling, short construction time, low operation risk, and the like.
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 construction and a manufacturing method thereof.
Background
The continuous rigid frame bridge without support is newly 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 expansion deformation of the temperature load girder, the side pier adopts a double-support thin-wall pier with smaller anti-pushing rigidity, and the girder is fixedly connected with only one thin-wall column. Through the research of related bridges at home and abroad, the continuous rigid frame without the support is mainly characterized in that: (1) The support is not arranged, the diseases of the support are avoided, the cost is saved, the later maintenance cost is low, and the circuit shutdown caused by replacing the support is avoided; (2) The earthquake-resistant performance is good, horizontal force can be uniformly spread on each pier in earthquake, and a continuous beam bridge is required to be provided with a brake pier or a special earthquake-resistant support is adopted; (3) The pier beams are directly fixedly connected, the lines are continuous and clear, the whole pier beams are coordinated, and the landscape effect is good.
Because of the existence of beam seams between adjacent beams, the temporary T-shaped structures are tensioned and butted, and the beam seams in the middle must be temporarily filled. The traditional method is that the temporary mortar is filled, and chiseled after the construction is completed. The method mainly solves the problems that the construction quality is not easy to guarantee, the chiseling is very troublesome, the working period at high altitude is long, and the risk is high.
Disclosure of Invention
In order to at least partially overcome the above problems in the prior art, the present invention provides a support structure for temporary T-structure suspension 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-construction suspension casting, comprising: steel outer shell, steel inner shell, skeleton steel bar and filling material; 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 filler material fills a void between the steel outer shell and the steel inner shell; both sides of the steel shell are provided with grooves penetrating through the sides.
Wherein, still include: the hanging rings are arranged at two symmetrical positions of the gravity center of the steel shell; one end of the hanging ring is connected with a hanging ring anchoring nut arranged in the filling material.
Wherein, the end face of the steel shell is provided with a through hole; 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.
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: reinforcing the screw; one end of the reinforcing screw is connected with the top surface of the groove, and the other end of the reinforcing screw is connected with the bottom surface of the groove.
Wherein the widths of the steel outer shell and 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 the steel plates is 6-12 mm.
Wherein the section 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-construction suspension casting, comprising: fixedly mounting a prefabricated support structure between the first side span cast-in-situ section and the second side span cast-in-situ section; and connecting the first side span cast-in-place section and the second side span cast-in-place section by means of the temporary high-strength screw-thread thick steel bar penetrating through the through hole on the supporting structure.
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 a beam and the width of a beam seam; the section of the steel inner shell is rectangular or polygonal, and grooves penetrating through the side surfaces are formed in two side surfaces of the steel outer shell; 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 a pore canal filling rubber rod and a hanging ring anchoring nut on the skeleton steel bar, pouring filling materials in a gap between the steel outer shell and the steel inner shell, and curing to design 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; s4, screwing and fixing the screw rod of the hanging ring and the hanging ring anchoring nut, and simultaneously pulling out the pore canal filling rubber rod.
In summary, the temporary T-shaped structure support structure for suspension casting construction provided by the invention comprises the following components: steel outer shell, steel inner shell, skeleton steel bar and filling material; 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 skeleton steel bars; filling a gap between the steel outer shell and the steel inner shell with a filling material; both sides of the steel shell are provided with grooves penetrating through the sides. The support structure for temporary T-shaped structure suspension casting construction solves the problems that the quality of a traditional method is not easy to guarantee, the dismantling period is long, the risk of overhead operation is high, and the like, and has the advantages of good prefabrication quality, simplicity in installation and dismantling, short construction time, low operation risk, and the like.
Drawings
Fig. 1 is a schematic structural view of a support structure for temporary T-structure suspension casting according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a support structure for temporary T-structure suspension casting according to an embodiment of the present invention, as shown in fig. 1, including: a steel outer shell 1, a steel inner shell 2, skeleton reinforcing steel bars 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 filler material 4 fills the gap between the steel outer shell 1 and the steel inner shell 2;
both sides of the steel housing 1 are provided with grooves penetrating the sides.
Wherein the inner and outer contours of the cross section of the supporting structure are consistent with the contour line of the girder end of the box girder;
preferably, the contact surfaces of the support structure and the beam ends of the two sides are coated with a release agent.
Preferably, both sides of the steel housing 1 are provided with grooves penetrating the sides, the shape of the grooves being concave.
The prestress tensioning construction space is formed by grooves penetrating through the side surfaces of the steel shell 1 and beam end notch.
Preferably, the steel inner shell 2 encloses a shape of a through hole extending through the support structure.
The embodiment provides a support structure for temporary T-shaped structure suspension casting construction, wherein a steel inner shell is arranged in a steel outer shell; the steel outer shell and the steel inner shell are connected through skeleton steel bars; the filling material fills the gap between the steel outer shell and the steel inner shell; both sides of the steel shell are provided with grooves penetrating through the sides. The support structure for temporary T-shaped structure suspension casting construction solves the problems that the quality of a traditional method is not easy to guarantee, the dismantling period is long, the risk of overhead operation is large and the like, and has the advantages of being good in prefabrication quality, simple to install and dismantle, 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, further includes: the hanging rings 5 are arranged at two symmetrical positions of the gravity center of the steel shell 1; wherein,,
one end of the hanging ring 5 is connected with a hanging ring anchoring nut arranged in the filling material 4.
Specifically, the screw rod on the hanging ring and the hanging ring anchoring nut are screwed and fixed, so that the supporting structure can be lifted and put down by using the hanging ring.
Preferably, in the present embodiment, 2 slings 5 are installed, and the 2 slings 5 are symmetrically arranged.
The embodiment provides a support structure for temporary T constructs suspension casting construction, through setting up rings to detachable, the hoist and mount are accomplished the back and are dismantled, guarantee that the bridge floor is level and smooth, convenient operation.
In another embodiment of the invention, on the basis of the above embodiment, the end face of the steel casing 1 is provided with a through hole 7; wherein,,
the through hole 7 passes through the first end face of the steel casing 1, the filler material 4, and the second end face of the steel casing 1 in this order.
Wherein a plurality of through holes 7 are arranged on the end face of the steel shell 1, and steel ropes connect beams at two ends of the supporting structure together through the through holes 7.
In a further embodiment of the present invention, based on the above embodiment, the filler 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 intensity grade: the strength grade of concrete is determined by referring to the standard value (MPa) of the compressive strength of the concrete cube, and the symbol "C" indicates. The grades are divided into: c7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60 total 12 grades.
Of course, the strength and isocratic requirements of different projects or concrete used in different parts are also different; wherein,,
(1) And C7.5-C15 are mainly used for cushion layers, foundations, terraces and structures with little stress.
(2) C15-C25 are used for beams, plates, columns, stairs, roof truss and other common reinforced concrete structures.
(3) C25-C30 are used for large-span structures and have high durability requirements.
(4) The material with the carbon number of more than 30 is used for prestress reinforced concrete members, bearing dynamic load structures, special structures and the like.
Preferably, the filler material is concrete in this embodiment.
In a further 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.
The embodiment provides a support structure for temporary T constructs suspension casting construction, and the one end of reinforcing screw is connected with the top surface of recess, and the other end of reinforcing screw is connected with the bottom surface of recess, and on the one hand reinforcing structure's wholeness, on the other hand is concurrently the safety railing during the construction.
In a further embodiment of the invention, the width of the steel outer shell 1 and the steel inner shell 2 is 10 cm-20 cm on the basis of the above embodiment.
Wherein, the widths of the steel outer shell 1 and the steel inner shell 2 are consistent with the width of the beam seam.
Preferably, the widths of the steel outer shell 1 and the steel inner shell 2 are 10cm; alternatively, the widths of the steel outer shell 1 and the steel inner shell 2 are 20cm; alternatively, the widths of the steel outer shell 1 and the steel inner shell 2 are 15cm.
In a further embodiment of the present invention, on the basis of the above embodiment, the materials of the steel outer shell 1 and the steel inner shell 2 are steel plates, and the thickness of the steel plates is 6 mm-12 mm.
Specifically, the thickness of the steel plate is 6mm; alternatively, the thickness of the steel plate is 12mm; alternatively, the thickness of the steel plate is 8mm.
The embodiment provides a support structure for temporary T-shaped structure suspension casting construction, wherein the steel outer shell and the steel inner shell are made of steel plates, and the thickness of the steel plates is 6-12 mm. Not only ensuring enough supporting area between the steel inner shell and the steel outer shell, but also keeping enough inner construction space. Meanwhile, the whole weight of the supporting structure is reduced, and the hoisting requirement is reduced.
In a further embodiment of the present invention, the cross-sectional shape of the steel inner shell 2 is rectangular or polygonal on the basis of the above-described embodiment.
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-section.
In one embodiment of the present invention, there is provided a method for manufacturing a support structure for temporary T-structure suspension casting, including:
fixedly mounting a prefabricated support structure between the first side span cast-in-situ section and the second side span cast-in-situ section; and connecting the first side span cast-in-place section and the second side span cast-in-place section by means of the temporary high-strength screw-thread thick steel bar penetrating through the through hole on the supporting structure.
Specifically, mechanically hoisting a prefabricated temporary support structure between a first side span cast-in-situ section and a second side span cast-in-situ section, and coating isolating agents on two ends 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 the temporary high-strength screw thread thick steel bars to pass through.
The embodiment provides a manufacturing method of a support structure for temporary T-shaped structure suspension casting construction, solves the problems that the quality of a traditional method is not easy to guarantee, the dismantling period is long, the risk of overhead operation is high, and the like, and has the advantages of good prefabrication quality, simplicity in installation and dismantling, short construction time, low operation risk and the like.
In a further embodiment of the present invention, based on the above embodiment, the method for manufacturing 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 a beam and the width of a beam seam; wherein,,
the section of the steel inner shell is rectangular or polygonal, and grooves penetrating through the side surfaces are formed in two side surfaces of the steel outer shell;
wherein the inner and outer contours of the cross section of the supporting structure are consistent with the contour line of the girder end of the box girder;
preferably, the contact surfaces of the support structure and the beam ends of the two sides are coated with a release agent.
Preferably, both sides of the steel housing are provided with grooves penetrating the sides, the shape of the grooves being concave.
The prestress tensioning construction space is formed by grooves penetrating through the side surfaces of the steel shell and the beam end notch.
Preferably, the steel inner shell is shaped as a through hole penetrating the support structure.
Wherein the support structure further comprises: reinforcing the screw; one end of the reinforcing screw is connected with the top surface of the groove, and the other end of the reinforcing screw 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 a pore canal filling rubber rod and a hanging ring anchoring nut on the skeleton steel bar, pouring filling materials in a gap between the steel outer shell and the steel inner shell, and curing to design 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 face of the steel shell is provided with a through hole; 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.
Wherein, be provided with a plurality of through-holes at the terminal surface of steel shell, the girder at bearing structure both ends is connected together through the through-hole to the cable wire.
Wherein, the classification of concrete intensity grade: the strength grade of concrete is determined by referring to the standard value (MPa) of the compressive strength of the concrete cube, and the symbol "C" indicates. The grades are divided into: c7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60 total 12 grades.
Of course, the strength and isocratic requirements of different projects or concrete used in different parts are also different; wherein,,
(1) And C7.5-C15 are mainly used for cushion layers, foundations, terraces and structures with little stress.
(2) C15-C25 are used for beams, plates, columns, stairs, roof truss and other common reinforced concrete structures.
(3) C25-C30 are used for large-span structures and have high durability requirements.
(4) The material with the carbon number of more than 30 is used for prestress reinforced concrete members, bearing dynamic load structures, special structures and the like.
Preferably, the filler material selected in this embodiment is concrete.
S4, screwing and fixing the screw rod of the hanging ring and the hanging ring anchoring nut, and simultaneously pulling out the pore canal filling rubber rod.
Specifically, the screw rod on the hanging ring and the hanging ring anchoring nut are screwed and fixed, so that the hanging ring can lift and put down the supporting structure.
Preferably, in this embodiment, 2 slings are mounted and the 2 slings are symmetrically arranged. Through setting up rings to detachable, hoist and mount are accomplished the back and are dismantled, guarantee that the bridge floor is level and smooth, convenient operation.
The embodiment provides a manufacturing method of a support structure for temporary T-shaped construction suspension casting, wherein a steel inner shell is arranged inside a steel outer shell; the steel outer shell and the steel inner shell are connected through skeleton steel bars; the filling material fills the gap between the steel outer shell and the steel inner shell; both sides of the steel shell are provided with grooves penetrating through the sides. The manufacturing method of the temporary T-shaped structure of the side span of the continuous rigid frame without the support solves the problems that the quality of a traditional method is not easy to guarantee, the dismantling period is long, the risk of high-altitude operation is large and the like, and has the advantages of being good in prefabrication quality, simple in installation and dismantling, short in construction time, low in operation risk and the like.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (5)
1. A method for manufacturing a support structure for temporary T-structure suspension casting construction is characterized in that,
the temporary T constructs suspension and waters the construction and uses bearing structure includes: steel outer shell, steel inner shell, skeleton steel bar and filling material;
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 filler material fills a void between the steel outer shell and the steel inner shell;
grooves penetrating through the side surfaces are formed in two side surfaces of the steel shell;
further comprises: the hanging rings are arranged at two symmetrical positions of the gravity center of the steel shell; wherein,,
one end of the hanging ring is connected with a hanging ring anchoring nut arranged in the filling material;
the manufacturing method of the temporary T-shaped support structure for suspension casting construction comprises the following steps:
fixedly mounting a prefabricated support structure between the first side span cast-in-situ section and the second side span cast-in-situ section; connecting the first side span cast-in-situ section and the second side span cast-in-situ section by means of a temporary high-strength screw-thread thick steel bar penetrating through a through hole on the supporting structure;
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 a beam and the width of a beam seam; wherein,,
the section of the steel inner shell is polygonal, and grooves penetrating through the side surfaces are formed in two side surfaces of the steel outer shell;
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 a pore canal filling rubber rod and a hanging ring anchoring nut on the skeleton steel bar, pouring filling materials in a gap between the steel outer shell and the steel inner shell, and curing to design 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;
s4, screwing and fixing the screw rod of the hanging ring and the hanging ring anchoring nut, and simultaneously pulling out the pore canal filling rubber rod.
2. The method for manufacturing a support structure for temporary T-construction suspension casting according to claim 1, wherein an end face of the steel housing 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.
3. The method for manufacturing a support structure for temporary T-construction suspension casting according to claim 1, further comprising: reinforcing the screw; wherein,,
one end of the reinforcing screw is connected with the top surface of the groove, and the other end of the reinforcing screw is connected with the bottom surface of the groove.
4. The method for manufacturing a support structure for temporary T-construction suspension casting according to claim 1, wherein the widths of the steel outer shell and the steel inner shell are 10cm to 20cm.
5. The method for manufacturing the support structure for temporary T-structure suspension casting construction according to claim 1, wherein the steel outer shell and the steel inner shell are made of steel plates, and the thickness of the steel plates is 6 mm-12 mm.
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| GB863640A (en) * | 1956-03-19 | 1961-03-22 | Hans Gstoettner | Tension boom for ferro-concrete beam or girder structures |
| JP2008121288A (en) * | 2006-11-13 | 2008-05-29 | Fuji Ps Corp | Continuous steel plate web bridge and method of constructing continuous steel plate web bridge |
| CN203475289U (en) * | 2013-09-24 | 2014-03-12 | 四川省交通运输厅公路规划勘察设计研究院 | Pile type continuous rigid frame bridge |
| CN105274939B (en) * | 2015-09-10 | 2017-05-10 | 重庆市轨道交通设计研究院有限责任公司 | Connecting device for PC track beam |
| CN207314169U (en) * | 2017-10-26 | 2018-05-04 | 中铁第四勘察设计院集团有限公司 | A kind of temporary T structure cantilever casting construction supporting structure |
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