CN116254759B - Connection structure and connection method of prefabricated bridge pier - Google Patents
Connection structure and connection method of prefabricated bridge pier Download PDFInfo
- Publication number
- CN116254759B CN116254759B CN202310527344.7A CN202310527344A CN116254759B CN 116254759 B CN116254759 B CN 116254759B CN 202310527344 A CN202310527344 A CN 202310527344A CN 116254759 B CN116254759 B CN 116254759B
- Authority
- CN
- China
- Prior art keywords
- connecting piece
- pier foundation
- hollow cylinder
- hole
- cylinder connecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a connection structure and connection method of prefabricated pier, including cavity cylinder connecting piece and pier foundation festival, be equipped with first mounting hole and second mounting hole on the cavity cylinder connecting piece, the top of cushion cap or pier foundation festival is fixed to be equipped with spliced pole and first connecting piece, the bottom of pier foundation festival is equipped with the second connecting piece, cavity cylinder connecting piece cover is established on the spliced pole of cushion cap or pier foundation festival of downside, the pier foundation festival of upside is installed in the upper portion of cavity cylinder connecting piece, and make first connecting piece card in first mounting hole, the second connecting piece card is in the second mounting hole, and cooperate the inside ultra-high performance concrete of pouring of cavity cylinder connecting piece, be used for fixing the pier foundation festival on the cushion cap or fix adjacent pier foundation festival from top to bottom. According to the technical scheme, the foundation sections of the prefabricated piers can be fixedly connected into the whole pier, the connection strength is high, the stress performance is good, a pouring template does not need to be supported, the construction flow is simple, and the construction efficiency is high.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a connecting structure and a connecting method of a prefabricated pier.
Background
Along with the improvement of the industrialization level in China and the development of assembly type technology, the assembly type bridge becomes a new trend of bridge construction. The assembled bridge transports the components to a construction site for assembly, the site wet operation is less, the construction speed is faster, fewer site constructors are needed, and the factory production of the components is beneficial to ensuring the quality of products.
At present, the prefabricated bridge is mainly connected between pier columns and bearing platforms in a socket joint type and a cast-in-situ type, but the two connection modes have complex connection structures, a large amount of concrete needs to be poured at wet joints on site, a large amount of site construction operation is needed, and therefore the advantages of the assembled building in the construction speed cannot be fully reflected, and in addition, the mechanical property of the wet joints is poor and cracking is easy to occur.
Therefore, how to provide a connection structure and a connection method of a prefabricated pier, which can ensure the strength of the connection node of the pier and improve the construction speed is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the application provides a connecting structure and a connecting method of a prefabricated pier, which are simple in structure, high in strength of connecting nodes between pier foundation sections, capable of guaranteeing the quality of connection, simple and convenient in connecting process, simple and convenient in construction process, and beneficial to shortening the construction period.
The technical scheme provided by the application is as follows:
a connecting structure of a prefabricated pier comprises a hollow column connecting piece and a prefabricated pier foundation joint;
the hollow cylinder connecting piece comprises an annular bottom plate, an annular top plate and a side wall, wherein the side wall is used for fixedly connecting the annular bottom plate and the annular top plate, the side wall is positioned on one side, close to the outside, of the annular bottom plate and the annular top plate, first mounting holes are uniformly formed in the annular bottom plate along the circumference, second mounting holes are uniformly formed in the annular top plate along the circumference, and grouting holes are formed in the side wall;
the top of the bearing platform or the bridge pier foundation section is fixedly provided with a connecting column and a first connecting piece, the connecting column is positioned at the center of the bearing platform or the bridge pier foundation section, the first connecting pieces are uniformly distributed around the connecting column along the circumference, and the bottom of the bridge pier foundation section is uniformly provided with a second connecting piece along the circumference;
the hollow cylinder connecting piece is sleeved on the lower bearing platform or the connecting column of the pier foundation section, the lower bearing platform or the first connecting piece of the pier foundation section is clamped in the first mounting hole, the upper pier foundation section is arranged on the upper portion of the hollow cylinder connecting piece, the second connecting piece of the upper pier foundation section is clamped in the second mounting hole, and the hollow cylinder connecting piece is matched with ultra-high performance concrete poured inside the hollow cylinder connecting piece, so that the upper pier foundation section and the bearing platform are fixed, or the pier foundation sections adjacent up and down are fixed.
Further, the first mounting hole and the second mounting hole are vertically staggered.
Further, the first mounting hole and the second mounting hole each comprise a first hole end and a second hole end, the second hole ends are arc-shaped along the circumferential direction of the hollow cylinder connecting piece, the second hole ends are communicated with the first hole ends, and the aperture of the first hole ends is larger than the width of the second hole ends;
the first connecting piece can be installed in the first mounting hole from the first hole end of the first mounting hole, the second connecting piece can be installed in the second mounting hole from the first hole end of the second mounting hole, and the hollow cylinder connecting piece and the bridge pier foundation section can rotate relatively so that the first connecting piece can move from the first hole end to the second hole end of the first mounting hole, and the second connecting piece can move from the first hole end to the second hole end of the second mounting hole.
Further, the first connecting piece with the second connecting piece all includes pole portion and head, pole portion vertical fixation is in on the pier foundation festival, the head is fixed pole portion is kept away from the one end of pier foundation festival, the diameter of head is greater than the diameter of pole portion, the diameter of head is less than the aperture of first hole end, the diameter of head is greater than the width of second hole end, the diameter of pole portion is less than the width of second hole end.
Further, at least one marking line is vertically arranged at the end part position corresponding to the second hole end on the side wall of the hollow cylinder connecting piece, marks are arranged at the positions corresponding to the corresponding first connecting piece and/or second connecting piece on the side wall of the bridge pier foundation section, and the marks on the bridge pier foundation section can be positioned on the straight line corresponding to the marking line by rotating the hollow cylinder connecting piece or the bridge pier foundation section.
Further, the length of the connecting column is greater than the height of the hollow column connecting piece, and the length of the connecting column is smaller than the sum of the height of the hollow column connecting piece and the length of the second connecting piece.
Further, the grouting holes are uniformly distributed at the lower part of the side wall of the hollow cylinder connecting piece along the circumferential direction.
Further, the upper part of the side wall is provided with an exhaust hole along the circumferential direction.
A connection method of prefabricated bridge piers comprises the following steps:
s1, providing the bridge pier foundation joint and the hollow cylinder connecting piece, and fixedly installing the bridge pier foundation joint at the lower side at a position to be installed;
s2, installing a hollow cylinder connecting piece on a connecting column at the top of the pier foundation joint at the lower side, enabling a first connecting piece on the pier foundation joint at the lower side to be inserted into a first installation hole, hoisting the pier foundation joint at the upper side to the top of the hollow cylinder connecting piece, enabling a second connecting piece at the bottom of the pier foundation joint at the upper side to be inserted into a second installation hole of the hollow cylinder connecting piece, rotating the hollow cylinder connecting piece or the pier foundation joint, enabling the first connecting piece to be clamped in the first installation hole, and enabling the second connecting piece to be clamped in the second installation hole;
S3, filling ultra-high performance concrete into the hollow cylinder connecting piece, so that the ultra-high performance concrete is filled between the hollow cylinder connecting piece and the pier foundation sections on the upper side and the lower side, and the first connecting piece, the second connecting piece and the connecting column are buried in the ultra-high performance concrete.
Further, the step S3 specifically includes:
and pouring ultra-high-performance concrete into the hollow cylinder connecting piece from the grouting holes, blocking the exhaust holes when the concrete uniformly flows out of the exhaust holes, and continuously pouring the ultra-high-performance concrete until the gaps between the hollow cylinder connecting piece and the pier foundation sections at the upper side and the lower side are filled with the ultra-high-performance concrete, so that grouting is completed.
According to the connecting structure and the connecting method of the prefabricated pier, the hollow column connecting piece is adopted to fix the pier foundation sections on the bearing platform or fixedly assemble the pier foundation sections adjacent to each other up and down, so that the first connecting piece of the lower bearing platform or the pier foundation sections is clamped in the first mounting hole, the second connecting piece of the upper pier foundation section is clamped in the second mounting hole, then the ultra-high-performance concrete is poured into the hollow column connecting piece, the first connecting piece and the second connecting piece are buried in the ultra-high-performance concrete, the ultra-high-performance concrete is hardened to achieve a certain strength, namely, the pier foundation sections and the bearing platform or the pier foundation sections adjacent to each other up and down are fixedly connected into a whole.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a hollow cylinder connector according to an embodiment of the present application;
FIG. 2 is a top view of a hollow cylinder connector according to an embodiment of the present application;
fig. 3 is a schematic structural view of a bridge pier foundation joint according to an embodiment of the present application;
fig. 4 is a schematic view of an installation structure of a bridge pier foundation joint and a hollow column connecting piece according to an embodiment of the present application.
Reference numerals: hollow cylinder connecting piece 1, pier foundation festival 2, first mounting hole 3, second mounting hole 4, slip casting hole 5, spliced pole 6, first connecting piece 7, second connecting piece 8, first hole end 9, second hole end 10, exhaust hole 11.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.
In the formulas related to the present application, the same symbols are denoted by the same meanings unless otherwise noted.
As shown in fig. 1 to 4, an embodiment of the present application provides a connection structure of a prefabricated pier, including a hollow cylinder connection member 1 and a prefabricated pier foundation joint 2; the hollow cylinder connecting piece 1 comprises an annular bottom plate, an annular top plate and a side wall used for fixedly connecting the annular bottom plate and the annular top plate, wherein the side wall is positioned on one side of the annular bottom plate and the annular top plate, which is close to the outer part, the annular bottom plate is uniformly provided with first mounting holes 3 along the circumference, the annular top plate is uniformly provided with second mounting holes 4 along the circumference, and the side wall is provided with grouting holes 5;
The top of the bearing platform or the bridge pier foundation section 2 is fixedly provided with a connecting column 6 and a first connecting piece 7, the connecting column 6 is positioned at the center of the bearing platform or the bridge pier foundation section 2, the first connecting pieces 7 are uniformly distributed around the connecting column 6 along the circumference, and the bottom of the bridge pier foundation section 2 is uniformly provided with a second connecting piece 8 along the circumference;
the hollow cylinder connecting piece 1 is sleeved on the lower side of the bearing platform or the connecting column 6 of the pier foundation section 2, the lower side of the bearing platform or the first connecting piece 7 of the pier foundation section 2 is clamped in the first mounting hole 3, the upper side of the pier foundation section 2 is arranged on the upper part of the hollow cylinder connecting piece 1, the second connecting piece 8 of the upper side of the pier foundation section 2 is clamped in the second mounting hole 4, and the hollow cylinder connecting piece 1 is matched with ultra-high performance concrete poured inside the hollow cylinder connecting piece 1, so that the upper side of the pier foundation section 2 and the bearing platform are fixed, or the upper and lower adjacent pier foundation sections 2 are fixed.
According to the connecting structure of the prefabricated pier, the connecting column 6 at the top of the pier foundation section 2 at the lower side is inserted into the middle of the hollow column connecting piece 1, the hollow column connecting piece 1 is used for fixedly assembling the pier foundation sections 2 adjacent up and down, the first connecting piece 7 of the pier foundation section 2 at the lower side is clamped in the first mounting hole 3, the second connecting piece 8 of the pier foundation section 2 at the upper side is clamped in the second mounting hole 4, the hollow column connecting piece 1 is filled with ultra-high performance concrete, the hollow column connecting piece 1 is filled with the ultra-high performance concrete, the gap between the middle of the hollow column connecting piece 1 and the pier foundation section 2 is filled with the ultra-high performance concrete, the hollow column connecting piece 1 is changed into a solid body, the hollow column connecting piece 1 can effectively transmit vertical load, and a good anchoring effect can be formed for the first connecting piece 7 and the second connecting piece 8, and the pier foundation section 2 adjacent up and down is fixedly connected into a whole when the ultra-high performance concrete is hardened to reach a certain strength. Wherein, the ultra-high performance concrete is preferably micro-expansion ultra-high performance concrete, and the connection strength is better.
Compared with the prior art, the connecting structure of the prefabricated pier provided by the embodiment has the advantages that the hollow cylinder connecting piece 1 is large in cavity volume, the grouting holes 5 on the side wall are filled with ultra-high-performance concrete into the hollow cylinder connecting piece 1, the connecting strength of the hollow cylinder connecting piece 1 and the pier foundation sections 2 on the upper side and the lower side is guaranteed, the defect that the connecting strength is influenced due to the fact that grouting sleeve connection is adopted in the prior art, and air bubbles are easily generated in narrow grouting after steel bars are inserted into the sleeve is overcome. In addition, the hollow cylinder connecting piece 1 is used as a template for pouring concrete, so that the mechanical property of the poured concrete can be well restrained and improved, and the problem that the concrete at the joint of the traditional cast-in-situ method is easy to crack and fall off can be avoided.
In this embodiment, the first mounting hole 3 and the second mounting hole 4 have the same structure, and the first connector 7 and the second connector 8 have the same structure. The number of the first connecting pieces 7 and the second connecting pieces 8 on the bridge pier foundation sections 2 is required to meet the requirement that the bridge pier calculates the reinforcement ratio so as to ensure that the strength of the bridge pier foundation sections 2 connected into a whole is the same as that of a cast-in-situ or traditional precast bridge pier. The connecting column 6 and the bridge pier foundation joint 2 are prefabricated into a whole at the same time, the diameter of the connecting column 6 is 3-4 mm smaller than the inner diameter of the hollow column connecting piece, and even if errors caused by manufacturing or temperature exist, the hollow column connecting piece 1 can be smoothly sleeved on the connecting column 6.
In this embodiment, the structure of the hollow cylinder connecting piece 1 is described, the hollow cylinder connecting piece 1 is preferably made of steel, the annular bottom plate, the annular top plate and the side wall of the hollow cylinder connecting piece 1 are integrally formed, the specific annular bottom plate, the annular top plate and the side wall can be cast or welded into a whole, for example, the side wall can be a steel pipe, the top of the steel pipe is welded and fixed with the outer ring of the annular top plate, the bottom of the steel pipe is welded and fixed with the outer ring of the annular bottom plate, and the grouting holes 5 are formed in the steel pipe. The hollow cylinder connector 1 is manufactured in batch in a factory, so that the quality of the hollow cylinder connector 1 is ensured. The inner ring of the hollow cylinder connecting piece 1 and the upper side pier foundation section 2 are sequentially sleeved behind the connecting column 6 of the lower side pier foundation section 2, the first connecting piece 7 is clamped in the first mounting hole 3, the second connecting piece 8 is clamped in the second mounting hole 4, the hollow cylinder connecting piece 1 is filled with ultra-high performance concrete from the grouting hole 5, and the first connecting piece 7, the second connecting piece 8 and the connecting column 6 are buried in the ultra-high performance concrete, so that the continuity between the upper adjacent pier foundation section 2 and the lower adjacent pier foundation section 2 can be effectively ensured.
In this embodiment, the connection mode between the bridge pier foundation sections 2 is also applicable to the connection between the bearing platform and the bridge pier foundation sections 2, specifically, the lower side of the bridge pier foundation section 2 at the bottom is provided with the bearing platform, the top of the bearing platform is provided with the connecting column 6 and the first connecting piece 7, the connecting column 6 can be inserted into the inner ring of the hollow column connecting piece 1, so that the hollow column connecting piece 1 is installed on the bearing platform, the first connecting piece 7 is clamped in the first installation hole 3 and is matched with the ultra-high performance concrete poured inside the hollow column connecting piece 1, and the bridge pier foundation sections 2 at the bottom are fixed on the bearing platform. The connecting column 6 and the bearing platform are preformed into a whole at the same time.
In this embodiment, the above technical solution is optimized, as shown in fig. 1, where the first mounting hole 3 and the second mounting hole 4 are vertically staggered. The first mounting hole 3 at the bottom of the hollow cylinder connecting piece 1 and the second mounting hole 4 at the top are arranged in a vertically staggered mode, so that the first connecting piece 7 at the top of the pier foundation section 2 at the lower side and the second connecting piece 8 at the bottom of the pier foundation section 2 at the upper side cannot collide in the mounting process, and sliding is not easy to occur between the pier and the hollow cylinder connecting piece 1.
Specifically, as shown in fig. 1 and 2, each of the first mounting hole 3 and the second mounting hole 4 includes a first hole end 9 and a second hole end 10, the second hole end 10 is arc-shaped along the circumferential direction of the hollow cylinder connecting piece 1, the second hole end 10 is communicated with the first hole end 9, and the aperture of the first hole end 9 is larger than the width of the second hole end 10;
the first connecting piece 7 can be installed in the first installation hole 3 from the first hole end 9 of the first installation hole 3, the second connecting piece 8 can be installed in the second installation hole 4 from the first hole end 9 of the second installation hole 4, and the hollow cylinder connecting piece 1 and the bridge pier foundation section 2 can rotate relatively so that the first connecting piece 7 can move from the first hole end 9 to the second hole end 10 of the first installation hole 3, and the second connecting piece 8 can move from the first hole end 9 to the second hole end 10 of the second installation hole 4.
Wherein, the aperture of the first hole end 9 is larger than the outer diameters of the first connecting piece 7 and the second connecting piece 8, so that the first connecting piece 7 or the second connecting piece 8 is smoothly inserted from the first hole end 9, the first hole end 9 can be a circular hole or a polygonal hole, in order to facilitate the smooth sliding of the first connecting piece 7 or the second connecting piece 8 in the second hole end 10, the second hole end 10 is arc-shaped, and the width of the second hole end 10 is the hole distance in the vertical arc-shaped direction.
The hollow cylinder connecting piece 1 is sleeved on the connecting column 6 at the top of the pier foundation section 2 at the lower side, the first connecting piece 7 is inserted into the first mounting hole 3 from the first hole end 9, the pier foundation section 2 at the upper side is hoisted to the upper side of the hollow cylinder connecting piece 1, the second connecting piece 8 is inserted into the second mounting hole 4 from the first hole end 9, and the pier foundation section 2 at the upper side is not completely put down so as to rotate the hollow cylinder connecting piece 1 to a designated position or rotate the pier foundation section 2 at the upper side to a designated position, so that the first connecting piece 7 and the second connecting piece 8 can respectively move from the first hole end 9 to the end of the second hole end 10.
This embodiment describes the structure of the first connecting piece 7 and the second connecting piece 8, the first connecting piece 7 and the second connecting piece 8 each include a rod portion and a head portion, the rod portion is vertically fixed on the bridge pier foundation section 2, the head portion is fixed at one end of the rod portion away from the bridge pier foundation section 2, the diameter of the head portion is greater than the diameter of the rod portion, the diameter of the head portion is smaller than the aperture of the first hole end 9, the diameter of the head portion is greater than the width of the second hole end 10, and the diameter of the rod portion is smaller than the width of the second hole end 10.
The pole portion of first connecting piece 7 is pre-buried at the top of pier foundation festival 2, and the pole portion of second connecting piece 8 is pre-buried in the bottom of pier foundation festival 2, in order to make first connecting piece 7 and second connecting piece 8 be difficult for being pulled out from the pier foundation festival, and the pole portion of first connecting piece 7 and second connecting piece 8 is pre-buried in the partial bending of pier foundation festival, reinforcing anchor effect. During installation, the head of the first connecting piece 7 or the second connecting piece 8 is inserted from the first hole end 9, then the rod part is clamped at the end part from the first hole end 9 to the second hole end 10, and the head cannot be pulled out from the second hole end 10 because the diameter of the head is larger than the width of the second hole end 10, so that the first connecting piece 7 is clamped in the first mounting hole 3, and the second connecting piece 8 is clamped in the second mounting hole 4. The first connecting piece 7 and the second connecting piece 8 are buried in the ultra-high performance concrete, besides the cohesive force between the first connecting piece 7 and the second connecting piece 8 and the hollow cylinder connecting piece 1, the cross section area of the head part is larger than that of the rod part, the head part and the rod part are buried in the ultra-high performance concrete, the ultra-high performance concrete is anchored, when the ultra-high performance concrete is pulled, the pressure can be applied to the ultra-high performance concrete by the head parts of the first connecting piece 7 and the second connecting piece 8, the acting force applied by the first connecting piece 7 on the lower side and the acting force applied by the second connecting piece 8 on the upper side are just opposite, and the upper side and the lower side of the concrete in the hollow cylinder connecting piece 1 are subjected to two pressures with equal magnitudes. And when the first connecting piece 7 and the second connecting piece 8 are pulled, the head part can also generate compressive stress on the ultra-high performance concrete nearby, so that the bonding effect of the first connecting piece 7 and the second connecting piece 8 and the ultra-high performance concrete and the compressive and tensile strength of the concrete are improved. In this embodiment, the shaft portion and the head portion are integrally formed, and the specific first connecting member 7 and the specific second connecting member 8 are preferably long shear nails, so that in order to ensure the connection strength, the long shear nails are not pulled out, and the length of the shaft portion of the long shear nails embedded into the bridge pier foundation section and the diameter of the head portion of the long shear nails are required to meet the standard requirements or the actual requirements.
In order to facilitate the installation of the hollow cylinder connecting piece 1 and the bridge pier foundation section 2 at proper positions, at least one marking line is vertically arranged on the side wall of the hollow cylinder connecting piece 1 at the end position corresponding to the second hole end 10, marks are arranged on the side wall of the bridge pier foundation section 2 at the positions corresponding to the corresponding first connecting piece 7 and/or the second connecting piece 8, and the hollow cylinder connecting piece 1 or the bridge pier foundation section 2 is rotated to enable the marks on the bridge pier foundation section 2 to be positioned on the straight line corresponding to the marking line. Specifically, a mark line is vertically arranged on the side wall at the end part of the second hole end 10, the hollow column connecting piece 1 is rotated to enable marks on the pier foundation section 2 to be located on a straight line where the corresponding mark line is located, and then the first connecting piece 7 and the second connecting piece 8 are moved to the end part of the second hole end 10, so that the hollow column connecting piece 1 and the upper pier foundation section 2 are ensured to be installed in place.
The above technical solution is optimized in this embodiment, the length of the connecting post 6 is greater than the height of the hollow cylinder connector 1, and the length of the connecting post 6 is less than the sum of the height of the hollow cylinder connector 1 and the length of the second connector 8.
Specifically, the diameter of the connecting column 6 is 3-4 mm smaller than the inner ring diameter of the hollow column connecting piece 1, so that the hollow column connecting piece 1 can be sleeved on the connecting column 6 even if errors caused by manufacturing or temperature exist in the connecting column 6, and when ultra-high performance concrete is poured, the ultra-high performance concrete can emerge from the top of the hollow column connecting piece 1, enter a gap between the hollow column connecting piece 1 and the upper pier foundation 2, the height of the connecting column 6 is 3-4 mm higher than the height of the hollow column connecting piece 1, after the upper pier foundation 2 is hoisted to the top of the hollow column connecting piece, the connecting column is installed at the top of the lower pier foundation 2, so that a second connecting piece is installed in a second installation hole, and a small gap exists between the upper pier foundation and the hollow column connecting piece 1, so that the hollow column connecting piece 1 and the upper pier foundation 2 can be installed in place conveniently in the installation process.
In this embodiment, preferably, the height of the hollow cylinder connector 1 is greater than the length of the first connector 7, the height of the hollow cylinder connector 1 is greater than the length of the second connector 8, and the height of the hollow cylinder connector 1 is less than the sum of the length of the first connector 7 and the length of the second connector 8. Specifically, the height of the hollow cylinder connecting piece 1 refers to the distance from the bottom to the top inside the hollow cylinder connecting piece 1, and the height of the hollow cylinder connecting piece 1 is larger than the lengths of the first connecting piece 7 and the second connecting piece 8 so as to prevent the first connecting piece 7 from colliding with the annular top plate, and the second connecting piece 8 collides with the annular bottom plate; the height of the hollow cylinder connecting piece 1 is smaller than the sum of the length of the first connecting piece 7 and the length of the second connecting piece 8, the first mounting holes 3 and the second mounting holes 4 are arranged in an up-down staggered mode, after the first connecting piece 7 and the second connecting piece 8 are inserted into the hollow cylinder connecting piece 1, the hollow cylinder connecting piece 1 can be in a staggered distribution state, and the connecting strength between the upper pier foundation section 2 and the lower pier foundation section 2 can be enhanced.
The above technical scheme is optimized in this embodiment, and the grouting holes 5 are uniformly distributed at the lower part of the side wall of the hollow cylinder connector 1 along the circumferential direction. In the prior art, grouting sleeve connection is adopted, the residual space is small after the steel bars are inserted into the grouting sleeve, air bubbles are easily formed in the grouting process, and the bearing capacity of the connection part is greatly reduced. In the technical scheme, the grouting holes 5 are circumferentially and uniformly arranged at the lower part of the side wall, and the ultra-high-performance concrete is poured into the hollow cylinder connecting piece 1 from bottom to top from the grouting holes 5, so that the compactness of grouting can be effectively ensured.
The embodiment continues to optimize the technical scheme, and the upper part of the side wall is provided with the exhaust hole 11 along the circumferential direction. The exhaust hole 11 is evenly distributed at the top of the side wall of the hollow cylinder connecting piece 1 along the circumferential direction, the grouting holes 5 are evenly distributed at the bottom of the side surface of the hollow cylinder connecting piece 1 along the circumferential direction, ultra-high performance concrete is poured into the hollow cylinder connecting piece 1 from the grouting holes 5 at the lower part, when the ultra-high performance concrete evenly flows out from the exhaust hole 11 at the upper part, the exhaust hole 11 is blocked, the grouting into the hollow cylinder connecting piece 1 is continued until the gap between the hollow cylinder connecting piece 1 and the pier foundation section 2 at the upper side is filled with the ultra-high performance concrete, and the grouting is completed. The grouting holes are formed in the lower portions of the side walls, the exhaust holes are formed in the upper portions of the side walls, and therefore the hollow cylinder connecting piece 1 and the bridge foundation sections on the upper side and the lower side are filled with ultra-high-performance concrete, and grouting compactness is guaranteed.
The ultra-high performance concrete is filled between the gaps of the hollow cylinder connecting piece 1 and the pier foundation sections 2 at the upper side and the lower side, so that the transmission of vertical load is facilitated, the contact between the hollow cylinder connecting piece 1 and the external environment is isolated, and the bearing capacity of the hollow cylinder connecting piece 1 is prevented from being reduced due to corrosion.
The bearing capacity of the provided prefabricated pier connection structure is calculated according to the embodiment, and the concrete calculation process is as follows:
the following values are made according to bridge design: the diameter of the pier is 1.3m, the height of the pier is 10m, the concrete grade of the prefabricated pier is C30, f c =14.3 Mpa, prefabricated pier longitudinal rib 22 phi 16HRB335, f y The protective layer was 70mm thick, the stirrup diameter was 8mm, the spacing was 200mm, the bolt gauge was M22 x 160, grade 5.6, and yield strength was 300Mpa.
According to general Specification for highway bridge and culvert design (JTG D60-2015), the vertical load born by a single pier in the embodiment is as follows:
wherein:
g, self weight of the structure;
Q r -crowd load;
Q q -car load.
According to general Standard for road bridge and culvert design (JTG D60-2015), the standard value of the braking force of the automobile load of a design lane is 10% of the total gravity on the loading length, in this example, less than 165kN, 165kN is taken according to the standard, the standard value of four lanes is 2.68 times of that of a design lane, and the braking force is assumed to be borne by one pier, and the shearing force of the pier in this embodiment is:
In this embodiment, the product of the shear force and the total length of the bridge pier is taken by the least favorable bending moment of the bridge pier:
。
according to the concrete structural design specification (GB 50010-2010), the axle center compression bearing capacity calculation formula of the reinforced concrete axle center compression member is as follows:
wherein:
f c -a concrete compressive strength design value;
A cor -prefabricating the core cross-sectional area of the pier;
f y -design values of tensile strength of the longitudinal bars;
A s -prefabricating the cross-sectional area of all longitudinal bars of the pier;
f yv -design value of tensile strength of stirrup;
A sso -converted cross-sectional area of the spiral indirect rebar;
N RC -axial compression load capacity of the reinforced concrete axial compression member;
d cor -core cross-sectional diameter of concrete pier;
A ss1 -the cross-sectional area of the individual stirrups;
s is the interval of stirrups along the axial direction;
alpha-concrete constraint reduction coefficient.
Axle center compression bearing capacity of the bridge pier foundation joint of the embodiment:
according to the concrete structural design Specification (GB 50010-2010), the bearing capacity calculation formula of the circular section reinforced concrete eccentric compression member uniformly provided with longitudinal reinforcing steel bars along the periphery is as follows:
wherein:
a, prefabricating the cross-sectional area of the bridge pier;
r is the radius of the prefabricated bridge pier;
r s -radius of the location of the bar;
the ratio of the central angle of the concrete cross-sectional area of the alpha-compression zone to 2 pi;
α t -ratio of the cross-sectional area of the longitudinal tension bars to the cross-sectional area of all longitudinal bars, taking α when α > 0.625 t =0；
f y -design value of tensile strength of the steel bar.
According to the fact that the cylindrical section is half pulled and half pressed, namely the central angle corresponding to the section area of the pressed concrete is 180 degrees, 6 longitudinal steel bars are pulled, and the bearing capacity of the bridge pier foundation section under the combined action of bending moment and axial force in the embodiment is calculated:
according to an ATC-32 formula, the shear bearing capacity calculation formula of the reinforced concrete column is as follows:
wherein:
n is the vertical load born by the precast pier;
V c -shear load capacity provided by the concrete;
V s -the shear load capacity provided by the stirrups;
d' -stirrups enclose a ring-shaped diameter.
Shear bearing capacity of the pier foundation section in this embodiment:
the hollow cylinder connecting piece 1 is preferably Q345 steel, the thickness of the hollow cylinder connecting piece is 19mm, the design value f=295 Mpa of compressive strength of the steel is obtained, the height of the side wall of the hollow cylinder connecting piece is 200mm, and the poured concrete f is obtained c Because the study of the ultra-high performance concrete of steel pipe is not mature enough, taking the concrete with lower strength as an example, the actual bearing capacity of the ultra-high performance concrete of steel pipe is higher than the calculation result in the example.
According to technical Specification of concrete filled steel tube (GB 50936-2014), the calculation formula of the axial compression bearing capacity of the short column of the concrete filled steel tube column is as follows:
wherein:
n is the design value of the vertical bearing capacity of the axial compression of the concrete filled steel tube;
f sc -steel pipe concrete compressive strength design value;
Θ -the cuff coefficient;
α sc -steel content;
f-the design value of compressive strength of the steel material;
A s -steel pipe area;
A c -area of concrete in the steel pipe.
Axle center compression bearing capacity of the hollow cylinder connecting piece in the embodiment:
the calculation formula of the bending resistance bearing capacity of the steel tube concrete pure-bending component in the technical specification of steel tube concrete structure (GB 50936-2014) is as follows:
wherein:
γ m taking a plasticity development coefficient of 1.2;
W sc section modulus of the flexural member.
Bending-resistant bearing capacity of the hollow cylinder connecting piece under pure bending effect:
the bearing capacity calculation formula of the steel tube concrete bending component under the action of the axial pressure and the bending moment of the steel tube concrete structure technical specification (GB 50936-2014) is as follows:
when (when)When in use;
wherein:
β m -an equivalent bending moment coefficient;
N u -steel pipe concrete axle center compression vertical bearing capacity design value;
M u -steel pipe concrete pure bending bearing capacity design value;
N’ E coefficients, specific values are represented in the following formula.
Compression bearing capacity under the bending action of the hollow cylinder connecting piece of the embodiment:
bending-resistant bearing capacity of the hollow cylinder connecting piece under the bending action:
calculating a shear bearing capacity calculation formula of the first connecting piece and the second connecting piece:
shear strength of the first connecting piece and the second connecting piece:
wherein:
f, shearing force applied to the bolt;
i-number of bolts.
The extrusion strength of the first connecting piece, the second connecting piece and the concrete wall meets the following conditions:
wherein:
d-bolt diameter;
l-bolt depth of embedding.
Maximum shear force obtained according to the shear strength of the first connecting piece and the second connecting piece:
maximum shear force obtained according to the extrusion strength of the first connecting piece, the second connecting piece and the concrete wall:
and taking the minimum value of the two, namely the maximum shearing force obtained according to the shearing strength of the first connecting piece and the second connecting piece, as the shearing bearing capacity of the connecting steel ring.
In the calculation, the axle center compression bearing capacity of the hollow cylinder connecting piece provided by the embodiment is 7 times higher than that of the upper bridge pier foundation section and the lower bridge pier foundation section, the bending bearing capacity under the bending action is 20 times higher, the compression bearing capacity under the bending action is 10 times higher, the shearing bearing capacity is 80% higher, and the connecting steel ring has good bearing capacity and can be used for connecting the multi-section prefabricated bridge pier foundation sections.
The wall thickness of the hollow column connecting piece is calculated according to the embodiment, and the calculation method is as follows:
according to the technical standard of concrete-filled steel tube mixed structure (GB/T51446-2021), the structure of concrete-filled steel tube in the concrete-filled steel tube mixed structure meets the following regulations:
the wall thickness of the circular section steel pipe should not be smaller than 4mm, and the ratio of the outer diameter to the wall thickness should not be larger than 150 (235/f) y ) Not less than 25 (235/f) y ) The steel content of the cross section should not be less than 0.06 and should not be greater than 0.2.
The relation between the wall thickness of the steel pipe with the circular section and the radius of the pier can be obtained by twice simplifying the standard formula:
wherein:
α s -steel content, which is the ratio of the area of the steel ring to the area of the concrete;
h is the wall thickness of the hollow cylinder connecting piece.
Taking a hollow cylinder connection with a yield strength of 295Mpa by way of example, the ratio of the outer diameter to the wall thickness is between 20 and 120.
According to the calculation in the bearing capacity calculation method, when the thickness of the hollow cylinder connecting piece is 19mm, the bearing capacity is far higher than that of a bridge pier foundation section, so that the wall thickness of the hollow cylinder connecting piece only needs to take the minimum value according to the specification, and then the bearing capacity is checked according to the working condition. The minimum wall thickness calculated as the ratio of the outer diameter to the wall thickness is normally much smaller than the minimum wall thickness calculated as the steel content of the section, so the wall thickness of the hollow cylinder connection only needs to be calculated according to the following formula:
According to the connection structure of the prefabricated bridge pier, the embodiment also provides a connection method of the prefabricated bridge pier, which comprises the following steps:
s1, providing the pier foundation joint 2 and the hollow cylinder connecting piece 1, and fixedly installing the pier foundation joint 2 at the lower side at a position to be installed;
specifically, the bridge pier foundation section 2 and the hollow cylinder connecting piece 1 are prefabricated in a factory, so that the quality of the bridge pier foundation section 2 and the hollow cylinder connecting piece 1 can be conveniently controlled, and the bridge pier foundation section 2 and the hollow cylinder connecting piece 1 can be transported to a construction site.
S2, mounting a hollow cylinder connecting piece 1 on a connecting column 6 at the top of the pier foundation section 2 at the lower side, enabling a first connecting piece 7 on the pier foundation section 2 at the lower side to be inserted into a first mounting hole 3, hoisting the pier foundation section 2 at the upper side to the upper part of the hollow cylinder connecting piece 1, enabling a second connecting piece 8 at the bottom of the pier foundation section at the upper side to be inserted into a second mounting hole 4, rotating the hollow cylinder connecting piece 1 or the pier foundation section, enabling the first connecting piece 7 to be clamped in the first mounting hole 3, and enabling the second connecting piece 8 to be clamped in the second mounting hole 4;
specifically, the hollow cylinder connecting piece 1 is hoisted above the pier foundation joint at the lower side, so that the first connecting piece 7 is aligned with the first hole end 9 of the first mounting hole 3; then the hollow cylinder connecting piece 1 is lowered so that the connecting post 6 is inserted into the inner ring of the hollow cylinder connecting piece 1, and the first connecting piece 7 is inserted into the first hole end 9 of the first mounting hole 3; hoisting the upper bridge pier foundation joint 2 to the upper part of the hollow cylinder connecting piece 1, and because the length of the connecting column 6 is larger than the height of the hollow cylinder connecting piece 1, placing the upper bridge pier foundation joint 2 on the connecting column 6 of the lower bridge pier foundation joint 2, and inserting the second connecting piece 8 into the first hole end 9 of the second mounting hole 4; then the hollow column connecting piece 1 is rotated to a designated position, so that the first connecting piece 7 and the second connecting piece 8 are respectively moved from the corresponding first hole ends 9 to the second hole ends 10 until the marks on the side walls of the upper and lower pier foundation sections 2 are aligned with the corresponding mark lines.
S3, filling ultra-high-performance concrete into the hollow cylinder connecting piece 1, so that the ultra-high-performance concrete is filled between the hollow cylinder connecting piece 1 and the pier foundation sections 2 on the upper side and the lower side, and the first connecting piece 7, the second connecting piece 8 and the connecting column 6 are buried in the ultra-high-performance concrete.
Specifically, the grouting holes 5 on the side wall of the hollow column connecting piece 1 are used for pouring ultra-high performance concrete into the hollow column connecting piece 1, so that the ultra-high performance concrete fills the gap between the middle part of the hollow column connecting piece 1 and the pier foundation joint 2, the interior of the hollow column connecting piece 1 becomes solid, and the first connecting piece 7, the second connecting piece 8 and the connecting column 6 are buried in the ultra-high performance concrete, so that the upper and lower adjacent pier foundation joints 2 are fixedly connected into a whole.
In this embodiment, preferably, the step S3 specifically includes:
and pouring ultra-high-performance concrete into the hollow cylinder connecting piece 1 from the grouting holes 5, blocking the exhaust holes when the ultra-high-performance concrete uniformly flows out of the exhaust holes, and continuously pouring the ultra-high-performance concrete until the gaps between the hollow cylinder connecting piece and the pier foundation sections at the upper side and the lower side are filled with the ultra-high-performance concrete, so that grouting is completed.
Specifically, the exhaust holes 11 are uniformly distributed on the top of the side wall of the hollow cylinder connecting piece 1 along the circumferential direction, the grouting holes 5 are uniformly distributed on the bottom of the side surface of the hollow cylinder connecting piece 1 along the circumferential direction, ultra-high performance concrete is poured into the hollow cylinder connecting piece 1 from the grouting holes 5 at the lower part until a large amount of ultra-high performance concrete uniformly flows out of the exhaust holes 11 at the upper part, the exhaust holes 11 at the upper part are plugged, grouting is continued from the grouting holes until the gap between the hollow cylinder connecting piece and pier foundation sections at the upper side and the lower side is filled with the ultra-high performance concrete, grouting is completed, the inner part of the hollow cylinder connecting piece 1 is filled with the ultra-high performance concrete, and the first connecting piece, the second connecting piece and the connecting column are buried in the ultra-high performance concrete.
The embodiment further optimizes the above technical solution, and after the step S3, the method further includes:
and S4, after grouting, the part of the hollow cylinder connecting piece 1 exposed to the air is subjected to paint brushing. Specifically, the painting treatment can be directly performed after the installation grouting of each bridge pier foundation section is completed, or can be uniformly performed after the installation grouting of all bridge pier foundation sections is completed, and the painting treatment is performed on the part of the hollow cylinder connecting piece 1 exposed in the air, so that the reduction of the bearing capacity caused by the corrosion of the hollow cylinder connecting piece can be prevented.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A connection structure of prefabricated pier, its characterized in that: comprises a hollow column connecting piece and a prefabricated bridge pier foundation joint;
the hollow cylinder connecting piece comprises an annular bottom plate, an annular top plate and a side wall, wherein the side wall is used for fixedly connecting the annular bottom plate and the annular top plate, the side wall is positioned on one side, close to the outside, of the annular bottom plate and the annular top plate, first mounting holes are uniformly formed in the annular bottom plate along the circumference, second mounting holes are uniformly formed in the annular top plate along the circumference, and grouting holes are formed in the side wall;
the top of the bearing platform or the bridge pier foundation section is fixedly provided with a connecting column and a first connecting piece, the connecting column is positioned at the center of the bearing platform or the bridge pier foundation section, the first connecting pieces are uniformly distributed around the connecting column along the circumference, and the bottom of the bridge pier foundation section is uniformly provided with a second connecting piece along the circumference;
The hollow cylinder connecting piece is sleeved on the lower bearing platform or the connecting column of the pier foundation section, the lower bearing platform or the first connecting piece of the pier foundation section is clamped in the first mounting hole, the upper pier foundation section is arranged on the upper portion of the hollow cylinder connecting piece, the second connecting piece of the upper pier foundation section is clamped in the second mounting hole, and the hollow cylinder connecting piece is matched with ultra-high performance concrete poured inside the hollow cylinder connecting piece, so that the upper pier foundation section and the bearing platform are fixed, or the pier foundation sections adjacent up and down are fixed.
2. The connection structure of a prefabricated pier according to claim 1, wherein the first mounting hole and the second mounting hole are vertically offset.
3. The connection structure of a prefabricated pier according to claim 2, wherein the first and second mounting holes each comprise a first hole end and a second hole end, the second hole ends are arc-shaped along the circumferential direction of the hollow cylinder connecting piece, the second hole ends are communicated with the first hole ends, and the aperture of the first hole ends is larger than the width of the second hole ends;
The first connecting piece can be installed in the first mounting hole from the first hole end of the first mounting hole, the second connecting piece can be installed in the second mounting hole from the first hole end of the second mounting hole, and the hollow cylinder connecting piece and the bridge pier foundation section can rotate relatively so that the first connecting piece can move from the first hole end to the second hole end of the first mounting hole, and the second connecting piece can move from the first hole end to the second hole end of the second mounting hole.
4. A connection structure of a prefabricated bridge pier according to claim 3, wherein the first connection member and the second connection member on the bridge pier foundation section each comprise a shaft portion and a head portion, the shaft portion is vertically fixed on the bridge pier foundation section, the head portion is fixed at one end of the shaft portion away from the bridge pier foundation section, the diameter of the head portion is larger than that of the shaft portion, the diameter of the head portion is smaller than that of the first hole end, the diameter of the head portion is larger than that of the second hole end, and the diameter of the shaft portion is smaller than that of the second hole end.
5. The connecting structure of prefabricated bridge pier according to claim 3 or 4, wherein at least one marking line is vertically arranged on the side wall of the hollow column connecting piece at the end position corresponding to the second hole end, marks are arranged on the side wall of the bridge pier foundation section at the positions corresponding to the corresponding first connecting piece and/or second connecting piece, and the marks on the bridge pier foundation section can be located on the straight line corresponding to the marking line by rotating the hollow column connecting piece or the bridge pier foundation section.
6. The connection structure of a prefabricated pier according to claim 1, wherein the length of the connection post is greater than the height of the hollow cylinder connection member, and the length of the connection post is less than the sum of the height of the hollow cylinder connection member and the length of the second connection member.
7. The connecting structure of the prefabricated pier according to claim 1, wherein the grouting holes are uniformly distributed at the lower part of the side wall of the hollow cylinder connecting piece in the circumferential direction.
8. The connecting structure of a prefabricated pier according to claim 7, wherein the upper portion of the side wall is provided with vent holes in the circumferential direction.
9. The connecting method of the prefabricated bridge pier is characterized by comprising the following steps of:
s1, providing the bridge pier foundation joint and the hollow cylinder connecting piece according to any one of claims 1 to 8, and fixedly installing the bridge pier foundation joint at the lower side at a position to be installed;
s2, installing a hollow cylinder connecting piece on a connecting column at the top of the pier foundation joint at the lower side, enabling a first connecting piece on the pier foundation joint at the lower side to be inserted into a first installation hole, hoisting the pier foundation joint at the upper side to the top of the hollow cylinder connecting piece, enabling a second connecting piece at the bottom of the pier foundation joint at the upper side to be inserted into a second installation hole of the hollow cylinder connecting piece, rotating the hollow cylinder connecting piece or the pier foundation joint, enabling the first connecting piece to be clamped in the first installation hole, and enabling the second connecting piece to be clamped in the second installation hole;
S3, filling ultra-high performance concrete into the hollow cylinder connecting piece, so that the ultra-high performance concrete is filled between the hollow cylinder connecting piece and the pier foundation sections on the upper side and the lower side, and the first connecting piece, the second connecting piece and the connecting column are buried in the ultra-high performance concrete.
10. The method for connecting the prefabricated bridge pier according to claim 9, wherein the step S3 is specifically:
and pouring ultra-high-performance concrete into the hollow cylinder connecting piece from the grouting holes, blocking the exhaust holes when the concrete uniformly flows out of the exhaust holes, and continuously pouring the ultra-high-performance concrete until the gaps between the hollow cylinder connecting piece and the pier foundation sections at the upper side and the lower side are filled with the ultra-high-performance concrete, so that grouting is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527344.7A CN116254759B (en) | 2023-05-11 | 2023-05-11 | Connection structure and connection method of prefabricated bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527344.7A CN116254759B (en) | 2023-05-11 | 2023-05-11 | Connection structure and connection method of prefabricated bridge pier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116254759A CN116254759A (en) | 2023-06-13 |
| CN116254759B true CN116254759B (en) | 2023-07-21 |
Family
ID=86688320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310527344.7A Active CN116254759B (en) | 2023-05-11 | 2023-05-11 | Connection structure and connection method of prefabricated bridge pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116254759B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100713690B1 (en) * | 2005-08-17 | 2007-05-04 | 고려대학교 산학협력단 | A set bridge post using unit filled concrete with internally confined hollow and a method for construction |
| US20080196341A1 (en) * | 2007-02-15 | 2008-08-21 | Korea University Industry and Academy Cooperation Foundation | Modular Column System Using Internally Confined Hollow Column Unit and Method of Constructing the Same |
| KR20090008072A (en) * | 2007-07-16 | 2009-01-21 | 아주대학교산학협력단 | Segmental internally confined hollow concrete filled tube pier |
| CN210216126U (en) * | 2019-01-22 | 2020-03-31 | 西安建筑科技大学 | Pier connection structure is assembled in prefabricated section of cutting |
| CN114086460A (en) * | 2020-08-24 | 2022-02-25 | 南京林业大学 | Novel bearing platform and prefabricated bridge pier connecting method |
| CN215164589U (en) * | 2021-05-20 | 2021-12-14 | 福建省高速路桥工程有限公司 | High pier structure for highway bridge |
| CN216973092U (en) * | 2022-01-26 | 2022-07-15 | 山东昊翔工程材料科技有限公司 | Pier of ultra high performance concrete placement |
| CN115897375A (en) * | 2022-12-07 | 2023-04-04 | 防灾科技学院 | Modular multi-chamber circular-end-shaped pier |
-
2023
- 2023-05-11 CN CN202310527344.7A patent/CN116254759B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN116254759A (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108505433B (en) | Pier structure and construction method thereof | |
| CN111042185B (en) | Construction method of basement raft foundation with tower crane foundation | |
| CN215441415U (en) | Quick-connect combined column pier structure | |
| CN111809510A (en) | Bearing-socket type prefabricated bridge pier connecting structure and construction method thereof | |
| CN111364352A (en) | Prefabricated pipe pier and cast-in-place pile connecting structure and construction method | |
| CN111676993A (en) | Special construction method for constructing basement foundation by inserting steel structure | |
| CN210288341U (en) | Precast pile for soft foundation treatment | |
| CN214833726U (en) | Prefabricated steel tube bundle shear wall | |
| CN113217059A (en) | Combined anchor rod with prestressed rod core | |
| CN213741571U (en) | Prefabricated column and beam column node for prefabricated concrete building structure reserved steel bar perforation | |
| CN116254759B (en) | Connection structure and connection method of prefabricated bridge pier | |
| CN212452270U (en) | Bearing-socket type prefabricated bridge pier connecting structure | |
| CN112030720A (en) | Prefabricated bent cap and pier stud socket type connecting structure and construction method | |
| CN107178081A (en) | A kind of prestressing force post jacking variable cross-section hollow shell pill and its construction method | |
| JP7224393B2 (en) | Precast columns and precast column connection structures | |
| CN214195056U (en) | Prefabricated shear wall with assembling holes arranged in staggered mode reserved in assembling mode and assembling structure of prefabricated shear wall | |
| RU2123091C1 (en) | Foundation for metal column, method of foundation construction and alignment | |
| CN114000514A (en) | Construction method of deep foundation pit angle support pile column component | |
| CN103911990B (en) | A kind of underwater casting formula tubing string with retaining wall and construction method thereof | |
| CN212714493U (en) | Prefabricated pier of assembling | |
| CN111502038A (en) | Assembly type PC building structure and construction method thereof | |
| CN217557411U (en) | Pile extension column steel bar structure | |
| CN211947917U (en) | Pile type pier assembly structure | |
| CN214061680U (en) | PHC tubular pile and highway bridge cushion cap connection structure | |
| CN217400934U (en) | Combined anchor rod with prestressed rod core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |