CN111335155A - Railway assembled hollow pier and construction method thereof - Google Patents
Railway assembled hollow pier and construction method thereof Download PDFInfo
- Publication number
- CN111335155A CN111335155A CN202010320152.5A CN202010320152A CN111335155A CN 111335155 A CN111335155 A CN 111335155A CN 202010320152 A CN202010320152 A CN 202010320152A CN 111335155 A CN111335155 A CN 111335155A
- Authority
- CN
- China
- Prior art keywords
- pier
- standard
- bearing platform
- section
- segment
- 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.)
- Pending
Links
Images
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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The embodiment of the application relates to the technical field of railway pier construction, in particular to a railway spliced hollow pier and a construction method thereof. The railway assembled hollow pier comprises a bearing platform, a standard pier column section, a pier top pier column section and a cushion stone; the bearing platform and the cushion are both made by casting in situ; the pier top pier column segment and the standard pier column segment are prefabricated parts; the standard pier column section is of a hollow tubular structure; the self-locking anchorage device fixing end, the steel strand corrugated pipe and the embedded steel bar are embedded in the bearing platform; assembling and positioning the bearing platform, the standard pier column sections and the pier top pier column sections through a plurality of concave-convex shear keys; the top end of the prestressed steel strand is tensioned at the top of the pier top pier column section, and the guide head at the bottom end is in self-locking fixed connection with the fixed end of the self-locking anchorage device. The railway assembled hollow pier can meet the rigidity design requirement of a railway bridge, and realizes the light design idea, the accurate butt joint among all members, the reliability of assembly and the shortening of the construction period.
Description
Technical Field
The application relates to the technical field of railway pier construction, in particular to a railway spliced hollow pier and a construction method thereof.
Background
The existing railway bridge construction always inherits the development concept of industrialized construction and rapid construction, and the assembled bridge structure has good economic benefit and social benefit due to the fact that the construction can accelerate the construction speed, reduce the environmental pollution and reduce the labor cost. In the existing railway bridge construction technology, the whole-hole erection of the simply-supported beam is mature, but the technology development of the prefabricated assembled pier is slow.
Because the railway bridge needs to meet the requirement of train smoothness, the pier needs to be ensured to have certain rigidity, and the railway pier mostly adopts a gravity pier or a hollow pier. The prefabricated assembled gravity type bridge pier is adopted, so that the weight of a prefabricated part is large, the transportation is inconvenient, the hoisting is difficult, the cost is increased, and the design principle of light construction of an assembled bridge is violated. Compared with the prior art, the hollow pier becomes a reasonable railway prefabricated assembled pier structure form, but how to ensure convenient accurate positioning and effective connection among a plurality of prefabricated hollow pier components becomes a technical difficulty.
Disclosure of Invention
The embodiment of the application provides a railway assembled hollow pier and a construction method thereof, the railway assembled hollow pier can meet the rigidity design requirement of a railway bridge, the lightweight design concept, the accurate butt joint among all components, the assembling reliability and the construction period shortening are realized.
According to a first aspect of the embodiment of the application, the railway assembled hollow pier comprises a bearing platform, standard pier column sections, pier top pier column sections and a cushion stone which are sequentially connected from bottom to top; wherein the bearing platform and the cushion stone are both made by cast-in-place; the pier top pier column segment and the standard pier column segment are prefabricated parts; the pier top pier column section comprises a solid section at the top and a hollow section at the bottom; the standard pier stud segment is of a hollow tubular structure;
a plurality of self-locking anchorage fixing ends, a steel strand corrugated pipe and a plurality of embedded steel bars with the tops protruding out of the top surface of the bearing platform are embedded in the bearing platform; the top of the embedded steel bar extends into a cavity of the standard pier stud segment adjacent to the bearing platform; cement paste is poured in the standard pier column sections adjacent to the bearing platform, and the cement paste is used for pouring the adjacent standard pier column sections and the bearing platform into a whole;
assembling and positioning are carried out between the bearing platform and the standard pier column sections, between the adjacent standard pier column sections and between the standard pier column sections and the pier top pier column sections through a plurality of concave-convex shear keys;
corrugated pipes corresponding to the steel strand corrugated pipes one by one are pre-embedded in the pier walls of the standard pier column section and the pier top pier column section; and prestressed steel strands penetrate through the corresponding corrugated pipes and the corresponding steel strand corrugated pipes, the top ends of the prestressed steel strands are tensioned at the tops of the pier top pier column sections, and the guide heads at the bottom ends of the prestressed steel strands are fixedly connected with the fixed ends of the self-locking anchors in a self-locking manner.
Preferably, an adhesive is applied between the cap and the standard pier stud segment, between adjacent standard pier stud segments, and between the standard pier stud segment and the pier top pier stud segment.
Preferably, a sealing gasket is sleeved on the periphery of each corrugated pipe.
Preferably, an annular sealing groove for receiving the sealing gasket is formed at an outer circumference of each of the bellows.
Preferably, the adhesive is an epoxy adhesive.
Preferably, a plurality of concave-convex shear keys are arranged on the top surface of the bearing platform, the bottom surface of the pier-top pier column section, the top surface of the standard pier column section and the bottom surface of the standard pier column section.
Preferably, the concave-convex shear keys and the corrugated pipe are arranged in a staggered mode.
Preferably, the cross-sectional shape of the standard pier stud segment is race track-shaped, oval, circular, rectangular or square;
the top section area of the pier top pier column section is larger than the bottom section area.
Preferably, the corrugated pipe is filled with cement slurry.
In addition, according to a second aspect of the embodiments of the present application, there is provided a construction method for any one of the railway assembled hollow piers provided in the above technical solutions, the construction method including the steps of:
the method comprises the following steps of (1) casting a bearing platform in situ, wherein a self-locking anchorage device fixing end and a steel strand corrugated pipe are pre-buried in the bearing platform;
installing standard pier stud segments on the bearing platform;
filling cement slurry into a cavity defined by the bearing platform and the bottom section standard pier stud sections;
installing pier top pier stud sections at the tops of the top section standard pier stud sections;
tensioning and anchoring the prestressed steel strand at the pier top;
grouting cement paste into the corrugated pipe;
and pouring a cushion stone on the top of the pier top pier column segment.
Preferably, before casting the bearing platform in situ, the method further comprises the following steps:
and prefabricating standard pier stud sections and pier top pier stud sections.
Preferably, after the pier top pier column section is installed on the top of the top section standard pier column section and before the prestressed steel strand is tensioned and anchored on the pier top, the method further comprises the following steps:
penetrating prestressed steel strands into the corrugated pipe at the top of the pier top pier stud segment;
and the guide head at the bottom end of the prestressed steel strand is self-locked anchored with the fixed end of the self-locking anchorage device in the bearing platform under the action of gravity.
By adopting the railway assembled hollow pier and the construction method thereof provided by the embodiment of the application, the following beneficial effects are achieved:
the bearing platform and the cushion stone of the railway assembled hollow pier adopt a cast-in-place structure, the standard pier column sections and the pier top pier column sections supported on the bearing platform all adopt prefabricated parts and can be prepared before the bearing platform is built, the standard pier column sections positioned in the middle all adopt a hollow structure, the pier top pier column sections serving as the pier tops adopt a partial hollow structure, and the railway assembled hollow pier adopting the structure has the characteristics of high construction speed, shortened construction period, convenience in realizing light weight and reduced hoisting difficulty; the bearing platform, the standard pier column sections and the pier top pier column sections are assembled and positioned through the concave-convex shear keys, and accurate positioning can be achieved among all members through shape matching and inserting matching of the concave-convex shear keys, so that the pier is assembled reliably and is in high butt joint speed; simultaneously, the bellows is pre-buried in the mound wall at standard pier stud segment and mound top pier stud segment for conveniently wear to establish prestressed steel strand between each pier stud segment, prestressed steel strand direction head is automatic anchor to the pre-buried self-locking ground tackle stiff end of cushion cap, adopt prestressed steel strand to be connected each pier stud segment and cushion cap, and make the cushion cap regard as prestressed steel strand's stiff end, the mound top is as the stretch-draw end of prestressed steel strand so that stretch-draw prestressing force, adopt prestressed steel strand to connect and can effectively reduce the construction degree of difficulty, the atress is clear and definite and make the structure of pier more approach cast-in-place pier.
Therefore, the railway spliced hollow pier has the advantages of simple and reasonable design, convenient and fast construction, large structural rigidity, good integral stress performance, capability of meeting the light design concept, effective realization of accurate butt joint of all prefabricated parts, reliable assembly and better technical and economic benefits.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a railway assembled hollow pier provided in an embodiment of the present application;
fig. 2 is a schematic structural view of the joint face of the standard pier stud segment provided in fig. 1;
fig. 3 is a schematic sectional view of the standard pier stud segment provided in fig. 2 in the direction of a-a;
FIG. 4 is a schematic illustration of the assembled connection of the platform provided in FIG. 1 to a standard pier stud segment;
fig. 5 is a process flow chart of a construction method for assembling a hollow pier for a railway according to the embodiment of the present application.
Reference numerals:
1-a bearing platform; 2-standard pier stud segments; 3-pier top pier stud segment; 4-a cushion stone; 5-fixing end of self-locking anchorage device; 6-prestressed steel strands; 7-a seam face; 8-a bellows; 9-concave-convex shear key; 10-pier walls; 11-a sealing gasket; 12-an annular seal groove; 13-cement slurry; 14-embedding reinforcing steel bars.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the application provides a railway assembled hollow pier and a construction method thereof, wherein the railway assembled hollow pier is used as a pier of a railway bridge and can also be used as a pier of other bridges and is not limited to the railway bridge; by adopting the railway assembled hollow pier provided by the embodiment of the application, the rigidity design requirement of a railway bridge can be met, the lightweight design concept, the accurate butt joint among all members, the reliability of assembly and the construction period shortening are realized.
Example one
The embodiment of the application provides a railway assembled hollow pier, which comprises a bearing platform 1, a standard pier column section 2, a pier top pier column section 3 and a cushion stone 4 which are sequentially connected from bottom to top, as shown in a structure of figure 1; wherein, the bearing platform 1 and the cushion stone 4 are both cast in situ; the pier top pier column section 3 and the standard pier column section 2 are both prefabricated parts; the pier top pier column section 3 comprises a solid section at the top and a hollow section at the bottom; the standard pier stud segment 2 is of a hollow tubular structure; the bearing platform 1 is used as a foundation for assembling the hollow pier on the railway, the standard pier column section 2 and the pier top pier column section 3 form a pier column, and the cushion stone 4 is used for supporting a bridge; the number of the standard pier stud segments 2 installed between the pier top pier stud segment 3 and the bearing platform 1 can be configured according to the actual height of the pier, and in the embodiment of the present application, the configuration of 3 standard pier stud segments 2 is taken as an example for detailed description, but in the actual construction process of the pier, 3 standard pier stud segments 2 stacked up and down in fig. 1 may be adopted, or 1, 2, 3 or more standard pier stud segments 2 may also be adopted, the number of the standard pier stud segments 2 in fig. 1 is only illustrated, and no limitation is made to the number of the standard pier stud segments 2; meanwhile, in the actual construction process, the specific sizes of the cushion cap 1, the standard pier column section 2, the pier top pier column section 3 and the cushion stone 4 can be determined according to actual needs;
as shown in the structures of fig. 1 and 4, a plurality of self-locking anchorage fixing ends 5, a steel strand corrugated pipe (not shown in the figure), and a plurality of embedded steel bars 14 with the tops protruding out of the top surface of the bearing platform 1 are embedded in the bearing platform 1; when the bearing platform 1 is poured, a self-locking anchorage fixing end 5 is embedded in advance, the self-locking anchorage fixing end 5 is used as a fixing end of the prestressed steel strand 6, and a connecting channel is provided for the prestressed steel strand 6 through a steel strand corrugated pipe, so that a guide head (not shown in the figure) of the prestressed steel strand 6 can enter the steel strand corrugated pipe and then is in self-locking connection with the self-locking anchorage fixing end 5; the top of the embedded steel bar 14 extends into a cavity of the standard pier stud segment 2 adjacent to the bearing platform 1; cement paste 13 is poured in the standard pier column segment 2 adjacent to the bearing platform 1 and is used for pouring the adjacent standard pier column segment 2 and the bearing platform 1 into a whole; a steel bar framework is arranged in the poured bearing platform 1, in order to improve the structural strength and rigidity of the bottom of the pier and also improve the connection strength between the bearing platform 1 and the bottommost standard pier stud section 2, a plurality of embedded steel bars 14 with the tops extending out of the bearing platform 1 are embedded in the top of the bearing platform 1, and the bottoms of the embedded steel bars 14 and the bearing platform 1 form an integral structure; the cement paste 13 is filled in a cavity defined by the bearing platform 1 and the bottommost standard pier column section 2, so that the cement paste 13 and the part of the embedded steel bar 14 exposed out of the bearing platform 1 are poured into a whole, the stress of the pier structure can be improved, and the integral stress requirement of the structure can be met;
assembling and positioning are carried out between the bearing platform 1 and the standard pier stud sections 2, between the adjacent standard pier stud sections 2 and between the standard pier stud sections 2 and the pier top pier stud sections 3 through a plurality of concave-convex shear keys 9; as shown in the structure of fig. 3, a plurality of concave-convex shear keys 9 are arranged on the end surface of a standard pier stud segment 2, the cross section of the concave-convex shear keys 9 is rectangular, and the sizes of the concave-convex shear keys 9 are different, in the actual construction process, the cross section of the concave-convex shear keys 9 can be any shape such as rectangular, circular, trapezoidal, square, triangular and the like, and the concave-convex shear keys 9 with different cross section shapes and different sizes can be arranged even on the same end surface of the same pier stud, but the concave-convex shear keys 9 correspondingly spliced and matched need to adopt the same cross section shape and size;
The bearing platform 1 and the cushion stone 4 of the railway assembled hollow pier adopt a cast-in-place structure, the standard pier stud section 2 and the pier top pier stud section 3 which are supported on the bearing platform 1 both adopt prefabricated components and can be prepared before the construction of the pier, the standard pier stud section 2 positioned in the middle adopts a hollow structure, the pier top pier stud section 3 which is used as the pier top adopts a partial hollow structure, and the railway assembled hollow pier adopting the structure has the characteristics of high construction speed, shortened construction period, convenience in realizing light weight and reduced hoisting difficulty; assembling and positioning are carried out among the bearing platform 1, the standard pier column sections 2 and the pier top pier column sections 3 through the concave-convex shear keys 9, and accurate positioning can be realized among all members through shape matching and inserting matching of the concave-convex shear keys 9, so that the pier is assembled reliably and is in high butt joint speed; simultaneously, prefabricated bellows 8 in the mound wall 10 of standard pier stud segment 2 and pier top pier stud segment 3 for conveniently wear to establish prestressing steel strand 6 between each pier stud segment, prestressing steel strand 6 is automatic to the pre-buried self-locking ground tackle stiff end 5 of cushion cap 1, adopt prestressing steel strand 6 to be connected each pier stud segment to cushion cap 1, make cushion cap 1 as the stiff end of prestressing steel strand 6, the pier top is as the stretch-draw end of prestressing steel strand 6 so that stretch-draw prestressing force, adopt prestressing steel strand 6 to connect and can effectively reduce the construction degree of difficulty, the atress is clear and definite and make the structure of pier more approach cast-in-place pier.
Therefore, the railway spliced hollow pier has the advantages of simple and reasonable design, convenient and fast construction, large structural rigidity, good integral stress performance, capability of meeting the light design concept, effective realization of accurate butt joint of all prefabricated parts, reliable assembly and better technical and economic benefits.
In a specific embodiment, adhesives (not shown in the figure) are coated between the bearing platform 1 and the standard pier stud segment 2, between the adjacent standard pier stud segments 2, and between the standard pier stud segment 2 and the pier top pier stud segment 3, that is, adhesives are coated on the joint surface 7 between the bearing platform 1 and the standard pier stud segment 2, adhesives are coated on the joint surface 7 between the adjacent standard pier stud segments 2, adhesives are coated on the joint surface 7 between the standard pier stud segment 2 and the pier top pier stud segment 3, the adhesives can be epoxy resin adhesives, and the components of the pier can be bonded and connected through the adhesives, and meanwhile, the joint surfaces 7 between the components can be sealed, so that the service life of the pier can be prolonged.
In order to prevent adhesives such as epoxy resin adhesives from entering the corrugated pipes 8 when the prestressed steel strands 6 are tensioned and affecting the durability of the prestressed steel strands while the adhesive is coated on the joint surfaces 7 between the components, as shown in the structure of fig. 3, a sealing gasket 11 is sleeved on the periphery of each corrugated pipe 8, and the sealing gasket 11 can be made of rubber or resin materials. In order to further improve the sealing effect of the sealing gasket 11, as shown in the structure of fig. 3, an annular sealing groove 12 for accommodating the sealing gasket 11 is formed at the outer periphery of each bellows 8. As shown in the structure of fig. 3, the annular sealing groove 12 may be formed by a groove formed in the bottom surface of the upper member at the outer periphery of the bellows 8, and an annular flange having an outer diameter smaller than the inner diameter of the groove is formed in the top surface of the lower member at the outer periphery of the bellows 8, and when the upper member and the lower member are coupled, the annular flange of the lower member is received in the groove of the upper member, and the annular sealing groove 12 is formed between the annular flange and the groove wall of the upper member; of course, the annular flange may be provided on the bottom surface of the upper member, and the groove may be provided on the top surface of the lower member; it is also possible to provide the annular groove forming the annular seal groove 12 alone only on the bottom surface of the upper member or the top surface of the lower member; relative to the joint face 7, the upper component is the standard pier stud segment 2 or pier top pier stud segment 3 on the upper side of the joint face 7, and the lower component is the platform 1 or standard pier stud segment 2 on the lower side of the joint face 7.
On the basis of the above-described various embodiments, a plurality of concave-convex shear keys 9 are provided on the top surface of the cap 1, the bottom surface of the pier top pier stud segment 3, the top surface of the standard pier stud segment 2, and the bottom surface of the standard pier stud segment 2. The number of the concave-convex shear keys 9 may be 10 as shown in fig. 2, but is not limited to 10, and may be any number such as 8, 12, 14, 16, 18, 20, and the like. As shown in the top surface or the bottom surface of the standard pier stud segment 2 of the structure of fig. 2, 10 concave-convex shear keys 9 and 12 corrugated pipes 8 which are distributed along the circumferential direction are arranged on the top surface or the bottom surface of the pier wall 10, and the plurality of concave-convex shear keys 9 can be shear keys which protrude out of the end surface or shear keys which are recessed in the end surface, and can also comprise shear keys which are arranged on the same end surface and protrude out of the end surface and shear keys which are recessed in the end surface; in the actual construction process, concave-convex shear keys 9 corresponding to each other in position and number are required to be arranged on the end surfaces of the members on the two sides of the joint surface 7, that is, when 10 convex shear keys protruding out of the end surfaces are arranged on the end surface of the member on the upper side of the joint surface 7, 10 concave shear keys recessed in the end surfaces corresponding to the 10 convex shear keys one by one are required to be arranged on the end surface of the member on the lower side of the joint surface 7, or when 10 concave shear keys recessed in the end surfaces are arranged on the end surface of the member on the upper side of the joint surface 7, 10 convex shear keys protruding out of the end surfaces corresponding to the 10 concave shear keys one by one are required to be arranged on the end surface of the member on the lower side of the joint surface 7, or when 5 concave shear keys recessed in the end surfaces and 5 convex shear keys protruding out of the end surfaces are respectively arranged on the end surface of the member on the upper side of the joint surface 7, the end surface of the member on the lower side of the joint surface 7 is required to be provided with the Corresponding convex shear keys and concave shear keys; through the concave-convex shear keys 9 which are arranged at the positions of the end surfaces of the upper and lower side members of the joint surface 7 and correspond to each other in number, when the two upper and lower side members of the joint surface 7 are assembled, the convex shear keys and the concave shear keys can be matched through the corresponding 10 pairs, and the rapid positioning of the two upper and lower side members of the joint surface 7 is realized.
In the actual construction process, in order to ensure smooth alignment of the upper and lower side members and uniform force application of the prestressed steel strand 6 in the circumferential direction of the pier, the concave-convex shear keys 9 and the corrugated pipes 8 may be arranged in a staggered manner, as shown in the structure of fig. 2, 1 or 2 corrugated pipes 8 are arranged between the adjacent concave-convex shear keys 9.
As shown in the structure of fig. 2, the cross-sectional shape of the standard pier stud segment 2 is runway-shaped, and the cross-sectional shape of the standard pier stud segment 2 can also be oval, round, rectangular or square; due to considerations of the construction requirements of the pad 4, the pier top pier stud segment 3 has a larger top cross-sectional area than a bottom cross-sectional area, as shown in the figure 1 structure.
After the standard pier stud segment 2 and the pier top pier stud segment 3 are hoisted, the prestressed steel strand 6 is tensioned and anchored at the pier top, meanwhile, the corrugated pipe 8 is filled with cement slurry 13, and the prestressed steel strand 6 can be fixed in the corrugated pipe 8 through the cement slurry 13 poured into the corrugated pipe 8, so that the structural stability of the pier is improved.
Example two
The embodiment of the application also provides a construction method, and when the construction method is adopted to construct the railway spliced hollow pier provided by the embodiment, as shown in fig. 5, the construction method comprises the following steps:
step S100, prefabricating a standard pier column section 2 and a pier top pier column section 3; the standard pier column section 2 and the pier top pier column section 3 can be prefabricated on site or in a beam field in advance, and only hoisting is needed when the pier is constructed, so that the construction period of the pier can be greatly shortened; the prefabrication of the standard pier stud segment 2 and the pier top pier stud segment 3 can be carried out before construction, or can be carried out while the construction of the bearing platform 1 is carried out;
step S200, casting a bearing platform 1 on site, casting the bearing platform 1 according to actual needs on a pier construction site, and pre-burying a plurality of self-locking anchorage fixing ends 5, steel strand corrugated pipes corresponding to the self-locking anchorage fixing ends 5 and a plurality of pre-buried reinforcing steel bars 14 with tops protruding out of the bearing platform 1 in the bearing platform 1;
step S300, installing standard pier stud segments 2 on a bearing platform 1, using the bearing platform 1 as a foundation of a pier, hoisting the standard pier stud segments 2 prefabricated in advance on the bearing platform 1 after the poured bearing platform 1 reaches a preset strength, and hoisting a proper number of standard pier stud segments 2 according to the actual height of the pier; the bearing platform 1 and the standard pier stud segment 2 can be accurately aligned through the arranged concave-convex shear keys 9;
step S400, filling cement slurry 13 into a cavity defined by the bearing platform 1 and the bottom section standard pier stud section 2; after the standard pier stud segment 2 at the lowest side is installed on the bearing platform 1, the part of the embedded steel bar 14 exposed out of the top of the bearing platform 1 extends into the standard pier stud segment 2 of the bottom section, at the moment, cement paste 13 is filled into the standard pier stud segment 2 of the bottom section, so that the cement paste 13 and the embedded steel bar 14 are poured into a whole, and the standard pier stud segment 2 of the bottom section and the bearing platform 1 are firmly connected into a whole through the embedded steel bar 14 and the cement paste 13;
step S500, installing a pier top pier column section 3 at the top of the top section standard pier column section 2; after the standard pier stud segment 2 is installed, continuously hoisting a pier top pier stud segment 3 at the top of the standard pier stud segment 2 of the top segment;
step S600, tensioning and anchoring the prestressed steel strand 6 at the pier top, and the step S500 and the step S600 may further include: a prestressed steel strand 6 is penetrated into the corrugated pipe 8 from the top of the pier top pier column section 3, and the prestressed steel strand 6 is provided with a guide head which is automatically locked with the self-locking anchoring; the guide head at the bottom end of the prestressed steel strand 6 moves downwards along the corrugated pipe 8 under the action of gravity and is anchored in a self-locking manner with the self-locking anchorage device fixing end 5 in the bearing platform 1;
step S700, pouring slurry 13 into the corrugated pipe 8; after the prestressed steel strands 6 are anchored, slurry 13 can be poured into the corrugated pipe 8, so that the slurry 13 fills gaps in the corrugated pipe 8, the prestressed steel strands 6 are firmly fixed in the corrugated pipe 8, and the prestressed steel strands 6, the corrugated pipe 8 and all members are connected into a whole;
and S800, pouring a cushion stone 4 at the top of the pier-top pier column section 3, wherein the cushion stone 4 can be poured and molded at the top of the pier-top pier column section 3 according to actual requirements.
When the construction method is adopted to construct the railway assembled hollow pier, the bearing platform 1 and the cushion stone 4 adopt a cast-in-place structure, and the standard pier column section 2 and the pier top pier column section 3 can be prefabricated in advance, so that the construction method for constructing the railway assembled hollow pier has the characteristics of high construction speed, shortened construction period, convenience in realizing light weight and reduced hoisting difficulty.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (12)
1. A railway assembled hollow pier is characterized by comprising a bearing platform, standard pier column sections, pier top pier column sections and a cushion stone which are sequentially connected from bottom to top; wherein the bearing platform and the cushion stone are both made by cast-in-place; the pier top pier column segment and the standard pier column segment are prefabricated parts; the pier top pier column section comprises a solid section at the top and a hollow section at the bottom; the standard pier stud segment is of a hollow tubular structure;
a plurality of self-locking anchorage fixing ends, a steel strand corrugated pipe and a plurality of embedded steel bars with the tops protruding out of the top surface of the bearing platform are embedded in the bearing platform; the top of the embedded steel bar extends into a cavity of the standard pier stud segment adjacent to the bearing platform; cement paste is poured in the standard pier column sections adjacent to the bearing platform, and the cement paste is used for pouring the adjacent standard pier column sections and the bearing platform into a whole;
assembling and positioning are carried out between the bearing platform and the standard pier column sections, between the adjacent standard pier column sections and between the standard pier column sections and the pier top pier column sections through a plurality of concave-convex shear keys;
corrugated pipes corresponding to the steel strand corrugated pipes one by one are pre-embedded in the pier walls of the standard pier column section and the pier top pier column section; and prestressed steel strands penetrate through the corresponding corrugated pipes and the corresponding steel strand corrugated pipes, the top ends of the prestressed steel strands are tensioned at the tops of the pier top pier column sections, and the guide heads at the bottom ends of the prestressed steel strands are fixedly connected with the fixed ends of the self-locking anchors in a self-locking manner.
2. The railway assembled hollow pier of claim 1, wherein an adhesive is coated between the bearing platform and the standard pier stud segment, between adjacent standard pier stud segments, and between the standard pier stud segment and the pier top pier stud segment.
3. The railway assembled hollow pier as claimed in claim 2, wherein a sealing gasket is sleeved on the periphery of each corrugated pipe.
4. The railway assembled hollow pier according to claim 3, wherein an annular sealing groove for accommodating the sealing gasket is formed at the outer periphery of each corrugated pipe.
5. The railway assembled hollow pier as claimed in claim 2, wherein the adhesive is epoxy resin adhesive.
6. The railway assembled hollow pier as claimed in claim 1, wherein a plurality of concave-convex shear keys are arranged on the top surface of the bearing platform, the bottom surface of the pier-top pier column segment, the top surface of the standard pier column segment and the bottom surface of the standard pier column segment.
7. The railway assembled hollow pier as claimed in claim 6, wherein the concave-convex shear keys and the corrugated pipes are arranged in a staggered manner.
8. The railway assembled hollow pier of claim 1, wherein the cross section of the standard pier column section is in a shape of a runway, an ellipse, a circle, a rectangle or a square;
the top section area of the pier top pier column section is larger than the bottom section area.
9. The railway-spliced hollow pier as claimed in any one of claims 1 to 8, wherein the corrugated pipe is filled with cement slurry.
10. A construction method for assembling hollow piers for railways according to any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps of (1) casting a bearing platform in situ, wherein a self-locking anchorage device fixing end and a steel strand corrugated pipe are pre-buried in the bearing platform;
installing standard pier stud segments on the bearing platform;
filling cement slurry into a cavity defined by the bearing platform and the bottom section standard pier stud sections;
installing pier top pier stud sections at the tops of the top section standard pier stud sections;
tensioning and anchoring the prestressed steel strand at the pier top;
grouting cement paste into the corrugated pipe;
and pouring a cushion stone on the top of the pier top pier column segment.
11. The method of claim 10, further comprising, prior to casting the cap in place:
and prefabricating standard pier stud sections and pier top pier stud sections.
12. The construction method of claim 10, wherein after installing the pier top pier stud section at the top of the top section standard pier stud section and before tensioning and anchoring the prestressed steel strands at the pier top, further comprising:
penetrating prestressed steel strands into the corrugated pipe at the top of the pier top pier stud segment;
and the guide head at the bottom end of the prestressed steel strand is self-locked anchored with the fixed end of the self-locking anchorage device in the bearing platform under the action of gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320152.5A CN111335155A (en) | 2020-04-22 | 2020-04-22 | Railway assembled hollow pier and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320152.5A CN111335155A (en) | 2020-04-22 | 2020-04-22 | Railway assembled hollow pier and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111335155A true CN111335155A (en) | 2020-06-26 |
Family
ID=71182965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010320152.5A Pending CN111335155A (en) | 2020-04-22 | 2020-04-22 | Railway assembled hollow pier and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111335155A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106852A (en) * | 2021-05-14 | 2021-07-13 | 上海市政工程设计研究总院（集团）有限公司 | Light modularized prefabricated assembled pier structure |
| CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
| CN113512935A (en) * | 2021-07-08 | 2021-10-19 | 中铁第五勘察设计院集团有限公司 | Temporary connection structure of prefabricated spliced bridge and prefabricated beam section |
| CN113832839A (en) * | 2021-09-10 | 2021-12-24 | 中国电建集团华东勘测设计研究院有限公司 | Prefabricated segment assembled pier body structure and construction method thereof |
| CN114541252A (en) * | 2022-04-07 | 2022-05-27 | 安徽省交通规划设计研究总院股份有限公司 | Segment prestress assembled pier with core column and construction method |
| CN114908675A (en) * | 2022-05-26 | 2022-08-16 | 中交路桥华东工程有限公司 | Hollow thin-wall high pier construction method |
| CN115233559A (en) * | 2022-08-10 | 2022-10-25 | 北京城建设计发展集团股份有限公司 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831875A (en) * | 2010-06-09 | 2010-09-15 | 中交第一公路勘察设计研究院有限公司 | Precast assembly process of prestressed concrete cylindrical hollow pier |
| KR101045805B1 (en) * | 2008-07-08 | 2011-07-04 | 고려대학교 산학협력단 | Prefabricated bridge using internally confined hollow concrete filling unit and construction method |
| CN103374881A (en) * | 2012-04-24 | 2013-10-30 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated segment assembling pier structure system and construction method thereof |
| CN103758031A (en) * | 2014-01-26 | 2014-04-30 | 招商局重庆交通科研设计院有限公司 | Method for manufacturing assembled type bridge pier by utilizing steel fiber reinforced self-compacting concrete |
| CN109853364A (en) * | 2019-01-22 | 2019-06-07 | 西安建筑科技大学 | A kind of the precast segment assembly bridge pier connection structure and method of shearing resistance |
| CN209722702U (en) * | 2018-12-18 | 2019-12-03 | 中交第二公路勘察设计研究院有限公司 | Pipe pier and cushion cap connection structure |
-
2020
- 2020-04-22 CN CN202010320152.5A patent/CN111335155A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101045805B1 (en) * | 2008-07-08 | 2011-07-04 | 고려대학교 산학협력단 | Prefabricated bridge using internally confined hollow concrete filling unit and construction method |
| CN101831875A (en) * | 2010-06-09 | 2010-09-15 | 中交第一公路勘察设计研究院有限公司 | Precast assembly process of prestressed concrete cylindrical hollow pier |
| CN103374881A (en) * | 2012-04-24 | 2013-10-30 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated segment assembling pier structure system and construction method thereof |
| CN103758031A (en) * | 2014-01-26 | 2014-04-30 | 招商局重庆交通科研设计院有限公司 | Method for manufacturing assembled type bridge pier by utilizing steel fiber reinforced self-compacting concrete |
| CN209722702U (en) * | 2018-12-18 | 2019-12-03 | 中交第二公路勘察设计研究院有限公司 | Pipe pier and cushion cap connection structure |
| CN109853364A (en) * | 2019-01-22 | 2019-06-07 | 西安建筑科技大学 | A kind of the precast segment assembly bridge pier connection structure and method of shearing resistance |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106852A (en) * | 2021-05-14 | 2021-07-13 | 上海市政工程设计研究总院（集团）有限公司 | Light modularized prefabricated assembled pier structure |
| CN113512935A (en) * | 2021-07-08 | 2021-10-19 | 中铁第五勘察设计院集团有限公司 | Temporary connection structure of prefabricated spliced bridge and prefabricated beam section |
| CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
| CN113832839A (en) * | 2021-09-10 | 2021-12-24 | 中国电建集团华东勘测设计研究院有限公司 | Prefabricated segment assembled pier body structure and construction method thereof |
| CN114541252A (en) * | 2022-04-07 | 2022-05-27 | 安徽省交通规划设计研究总院股份有限公司 | Segment prestress assembled pier with core column and construction method |
| CN114908675A (en) * | 2022-05-26 | 2022-08-16 | 中交路桥华东工程有限公司 | Hollow thin-wall high pier construction method |
| CN114908675B (en) * | 2022-05-26 | 2023-05-05 | 中交路桥华东工程有限公司 | Hollow thin-wall high pier construction method |
| CN115233559A (en) * | 2022-08-10 | 2022-10-25 | 北京城建设计发展集团股份有限公司 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
| CN115233559B (en) * | 2022-08-10 | 2023-03-28 | 北京城建设计发展集团股份有限公司 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111335155A (en) | Railway assembled hollow pier and construction method thereof | |
| CN108547217B (en) | Prefabricated bridge precast concrete pier column and cover beam socket structure and construction method | |
| CN108547216B (en) | Bridge precast concrete pier column and bridge foundation tooth key socket structure and construction method | |
| CN110387826B (en) | Segment prefabricated and assembled pier steel member and construction method and application thereof | |
| CN211368352U (en) | Connecting structure for assembly type pier and bearing platform anchoring steel bar sleeving and inserting post-pouring RPC | |
| KR101586320B1 (en) | Psc girder rahmen bridge and construction method thereof | |
| KR20110103000A (en) | Precast bridge joint structure with composite hollow concrete filled tube and a construction method for the same | |
| CN111519655A (en) | Assembled prestressing force retaining wall | |
| CN110725195A (en) | Connecting method for assembly type pier and bearing platform anchoring steel bar sleeve-insertion post-cast RPC and application thereof | |
| CN111827095B (en) | Prefabricated assembled hollow pier with built-in rib plates and construction method | |
| CN114592436A (en) | Pier capping beam lower support system and construction method thereof | |
| CN112301890B (en) | Hollow pier prefabricated segment connecting device and construction method | |
| KR100727114B1 (en) | Precast segment for constructing through bridges and the constructing method using it | |
| CN111827091B (en) | Prefabricated assembled hollow pier connected through prestress and construction method | |
| CN111764303A (en) | Connecting structure and construction method of prefabricated pier stand column and bearing platform | |
| CN218116110U (en) | Prefabricated assembled double-layer concrete-filled steel tube combined pier structure | |
| CN108411770B (en) | Transverse anchor bolt connection structure of modularized precast pier and construction method thereof | |
| CN212561130U (en) | Prefabricated assembled hollow pier connected through prestress | |
| CN114541243A (en) | Steel supporting hoop type concrete pile-column joint of assembly type bridge pier and construction method | |
| CN212357959U (en) | Assembly type prestress Y-shaped hollow pier | |
| CN211200023U (en) | Prefabricated bridge construction of full assembled | |
| CN210421403U (en) | Semi-dry type connecting joint of frame beam and frame column | |
| CN212561123U (en) | Combined embedded connection structure between prefabricated pier stud and base | |
| CN112627007A (en) | Construction method of steel-concrete composite beam with longitudinal prestress applied and combination | |
| CN111188258A (en) | Novel assembled bridge substructure |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200626 |
|
| RJ01 | Rejection of invention patent application after publication |