CN211333866U - High-speed railway beam-making pedestal suitable for unfavorable geology - Google Patents

High-speed railway beam-making pedestal suitable for unfavorable geology Download PDF

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CN211333866U
CN211333866U CN201921809090.3U CN201921809090U CN211333866U CN 211333866 U CN211333866 U CN 211333866U CN 201921809090 U CN201921809090 U CN 201921809090U CN 211333866 U CN211333866 U CN 211333866U
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honeycomb
pile
standard section
section
speed railway
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李义强
王博
陈叶
贾培基
高松
景娅星
许宏伟
陈士通
赵维刚
王新敏
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Shijiazhuang Tiedao University
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Shijiazhuang Tiedao University
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Abstract

The utility model discloses a high-speed railway system roof beam pedestal suitable for unfavorable geology belongs to civil engineering technical field, and system roof beam pedestal includes the tubular pile basis more than two rows, and every calandria pile basis includes the tubular pile that a plurality of intervals set up, all erects the honeycomb beam assembly who arranges side by side on every calandria pile basis, and multirow honeycomb beam assembly passes through the connecting piece and links to each other with the tubular pile, links to each other through the transverse connection roof beam between two liang of adjacent honeycomb beam assemblies. The utility model can be widely applied to geology with various adverse conditions, has good integrity, large structural rigidity and small dead weight, and can effectively control foundation settlement; the mechanical construction degree is high, and the construction quality is easy to control; the honeycomb beam assembly can be repeatedly utilized, the problem of field secondary tillage in the later period is solved, the environmental pollution is reduced, green construction is realized, and the investment and the labor investment of large-scale equipment in the earlier period are reduced; the method has the advantages of no need of digging a foundation pit on site, no pouring of concrete, neat site, low cost, short construction period and early completion and production.

Description

High-speed railway beam-making pedestal suitable for unfavorable geology
Technical Field
The utility model belongs to the technical field of civil engineering, especially, relate to a high-speed railway system roof beam pedestal suitable for unfavorable geology.
Background
The high-speed railway precast box girder has severe requirements on the strength and rigidity of a girder-making pedestal due to heavy weight and severe requirements on apparent deformation. The conventional beam-making pedestal for the high-speed railway is provided with three or four reinforced concrete strip beams or frame beams on a pile foundation bearing platform or an enlarged foundation, a prefabricated box beam steel template is installed on the concrete beam, a reinforcement cage is bound, and the concrete box beam is poured. The conventional manufacturing method has long construction period, consumes a large amount of steel bars and concrete, and greatly influences the field construction speed of the precast beam field. After the box girder is prefabricated, the field needs to be back-ploughed and returned to the field, the girder manufacturing pedestal is dismantled, the dismantling workload is large, the cost is high, the repeated use cannot be realized, and a large amount of resources are wasted.
At present, an assembled I-steel structure is used for replacing a conventional beam-making pedestal structure, and I-steel and steel supports are used for replacing a strip-shaped beam foundation, so that the method is improved compared with the conventional method, but a large number of prefabricated parts are required, and the stable calculation is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-speed railway system beam pedestal suitable for unfavorable geology aims at solving among the above-mentioned prior art concrete system beam pedestal working period long consumptive material many, the completion after broken tear the expense high, the wasting of resources is big, assembled steel construction system beam pedestal needs a large amount of prefabs, and the comparatively complicated technical problem of stable calculation.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a high-speed railway system beam pedestal suitable for unfavorable geology which characterized in that: the device comprises more than two rows of pipe pile foundations, wherein each row of pipe pile foundations comprises a plurality of pipe piles arranged at intervals, a honeycomb beam assembly is erected on each row of pipe pile foundations, and a plurality of rows of honeycomb beam assemblies are arranged in parallel and connected with the pipe piles through connecting pieces; every two adjacent honeycomb beam assemblies are connected through a plurality of transverse connecting beams arranged at intervals.
Preferably, the honeycomb beam assembly comprises end honeycomb beams at two ends and a plurality of standard section honeycomb beams sequentially connected in the middle, the junction of the end honeycomb beam and the standard section honeycomb beam and the junction of the adjacent standard section honeycomb beams are arranged on the tubular pile, and the end honeycomb beams are fixedly connected with the tubular pile through connecting pieces.
Preferably, the end honeycomb beam comprises an upper flange plate, a lower flange plate and two webs, the two webs are arranged between the upper flange plate and the lower flange plate in parallel, and polygonal holes are horizontally arranged in parallel in the middles of the two webs; the standard section honeycomb beam is I-shaped, the standard section honeycomb beam comprises an upper flange plate, a lower flange plate and a web plate arranged between the upper flange plate and the lower flange plate, and polygonal holes are horizontally arranged in the middle of the web plate in parallel.
Preferably, rib plates are vertically arranged on the outer sides of the web plates of the end honeycomb beam and the standard section honeycomb beam at intervals; and a connecting part is reserved between the rib plate arranged at the end part of the end honeycomb beam and the tail end of the end honeycomb beam, and two ends of the transverse connecting beam are matched with the connecting part and the adjacent rib plate.
Preferably, the end honeycomb beam is connected with the standard section honeycomb beam and two sides of a longitudinal junction between the end honeycomb beam and the adjacent standard section honeycomb beam through splicing plates.
Preferably, the transverse connecting beam comprises two rows of I-shaped steel, the two rows of I-shaped steel are arranged between the adjacent end honeycomb beams and between the adjacent standard section honeycomb beams in parallel up and down, and the I-shaped steel is perpendicular to the end honeycomb beams and the standard section honeycomb beams.
Preferably, the tubular pile is a PHC tubular pile, the PHC tubular pile is formed in a split mode, the PHC tubular pile comprises a pile body and a pile cap used for being connected with a connecting piece, the pile body comprises a lower pile section and an upper pile section, and the distance between the junction of the lower pile section and the upper pile section and the ground is 1 +/-0.1 m; the lower pile section and the upper pile section are welded and fixed through sizing blocks; the pile cap is arranged at the top of the pile head of the upper section of pile.
Preferably, the pile cap is cast-in-place reinforced concrete; the connecting piece includes steel backing plate, bolt and complex nut with it, the steel backing plate is pre-buried in the pile cap, the bolt runs through the steel backing plate in advance and welded fastening with it, the end that exposes of bolt links to each other with the honeycomb roof beam subassembly, and is fixed with nut threaded connection.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model has the advantages of simple structure and convenient and fast operation; the method can be widely applied to geology with various adverse conditions, and can be well applied to geological conditions with large fluctuation changes of the bearing stratum; the integrity is good, the structural rigidity is large, the self weight is small, the foundation settlement can be effectively controlled, and the production quality of the box girder is ensured; the mechanical construction degree is high, and the construction quality is easy to control; the honeycomb beam assembly can be repeatedly utilized, the dismantling work is avoided, the problem of field secondary tillage in the later period is fundamentally solved, the environmental pollution is reduced, the green construction is realized, a concrete mixing plant can not be built in the early period of construction, and the investment and the labor investment of large-scale equipment in the early period are reduced; the method has the advantages of no need of excavating a foundation pit on site, no need of pouring concrete, neat site, low manufacturing cost, short construction period, completion and production in advance, and great economic benefit and social value.
Drawings
Fig. 1 is a front view of a high-speed railway beam-making pedestal suitable for unfavorable geology, provided by the embodiment of the invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a front view of the end honeycomb beam of FIG. 1;
FIG. 5 is a cross-sectional view of the end honeycomb beam of FIG. 4;
FIG. 6 is a front view of the standard section honeycomb beam of FIG. 1;
FIG. 7 is a cross-sectional view of the standard segment honeycomb beam of FIG. 6;
FIG. 8 is a schematic view of the structure of the connector of FIG. 1;
in the figure: 1-end honeycomb beam; 2-standard section honeycomb beam; 3-pipe pile; 4-a connector; 5-transverse connecting beams; 6-upper flange plate; 7-lower flange plate; 8-a web; 9-polygonal holes; 10-a connecting part; 11-a rib plate; 12-a steel backing plate; 13-a bolt; 14-screw cap.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The high-speed railway beam-making pedestal suitable for unfavorable geology as shown in fig. 1-3 comprises more than two rows of pipe pile foundations, each row of pipe pile foundations comprises a plurality of pipe piles 3 arranged at intervals, a honeycomb beam assembly is erected on each row of pipe pile foundations, and a plurality of rows of honeycomb beam assemblies are arranged in parallel and connected with the pipe piles 3 through connecting pieces 4; every two adjacent honeycomb beam assemblies are connected through a transverse connecting beam 5. Wherein, the honeycomb beam subassembly includes tip honeycomb roof beam 1 at both ends and middle a plurality of standard section honeycomb roof beams 2 that link to each other in proper order, tip honeycomb roof beam 1 all sets up on tubular pile 3 with the juncture of standard section honeycomb roof beam 2, the juncture of adjacent standard section honeycomb roof beam 2, tip honeycomb roof beam 1 all links to each other with tubular pile 3 is fixed through connecting piece 4 with the tip of standard section honeycomb roof beam 2.
In a specific embodiment of the present invention, as shown in fig. 4-7, the end honeycomb beam 1 includes an upper flange plate 6, a lower flange plate 7 and two webs 8, the two webs 8 are arranged between the upper flange plate 6 and the lower flange plate 7 in parallel, and polygonal holes 9 are horizontally arranged in parallel in the middle of the two webs 8; the standard section honeycomb beam 2 is I-shaped, the standard section honeycomb beam 2 comprises an upper flange plate 6, a lower flange plate 7 and a web plate 8 arranged between the upper flange plate 6 and the lower flange plate 7, and polygonal holes 9 are horizontally arranged in the middle of the web plate 8 in parallel.
Further optimizing the technical scheme, as shown in fig. 4 and 6, rib plates 11 are vertically arranged at intervals outside the web plate 8 of the end honeycomb beam 1 and the standard section honeycomb beam 2, two polygonal holes 9 are distributed on the web plate 8 between two adjacent rib plates 11, and the rib plates 11 are arranged between two adjacent polygonal holes 9 on the web plate 8; a connecting part 10 is reserved between a rib plate 11 arranged at the end part of the end part honeycomb beam 1 and the tail end of the end part honeycomb beam, and two ends of the transverse connecting beam 5 are matched with the connecting part 10 and the adjacent rib plate 11, namely two ends of the transverse connecting beam 5 are simultaneously connected and fixed with the connecting part 10 and the adjacent rib plate. In addition, can set up the regulation steel sheet at last flange board top, adjust steel sheet and pass through bolted connection with last flange board, adjust the anti-camber of honeycomb beam subassembly through the cooperation of regulation steel sheet and top die block board, guarantee the debugging precision, shorten the debugging time.
In order to ensure the integral stability of the honeycomb beam assembly, the two sides of the longitudinal junction between the end honeycomb beam 1 and the standard section honeycomb beam 2 and between the adjacent standard section honeycomb beams 2 are connected through splicing plates.
In a specific embodiment of the present invention, as shown in fig. 2 and 3, the transverse connection beam 5 includes two rows of i-beams, the two rows of i-beams are disposed side by side up and down between the adjacent end honeycomb beams 1 and between the adjacent standard section honeycomb beams 2, and the i-beams are perpendicular to the end honeycomb beams 1 and the standard section honeycomb beams 2.
In a specific embodiment of the present invention, the tubular pile 3 is a PHC tubular pile (prestressed high-strength concrete tubular pile), the PHC tubular pile is formed in a split manner, the PHC tubular pile includes a pile body and a pile cap for connecting with a connecting member, the pile body includes a lower pile and an upper pile, and a junction between the lower pile and the upper pile is about 1 meter (floating 0.1 meter up and down) from the ground; the lower pile section and the upper pile section are welded and fixed through sizing blocks; the pile cap is arranged at the top of the pile head of the upper section of pile. Wherein, both ends adopt the PHC tubular pile foundation of diameter 0.4m, pile length 20m, the interlude adopts the PHC tubular pile foundation of diameter 0.4m pile length 15m, according to the construction progress requirement and many-sidedly compare, the tubular pile construction adopts the static pressure method to construct.
Wherein the pile cap is cast-in-place reinforced concrete; as shown in fig. 1 and 8, the connecting member 4 includes a steel backing plate 12, a bolt 13 and a nut 14 matched with the bolt, the steel backing plate 12 is embedded in the pile cap, the bolt 13 penetrates through the steel backing plate 12 in advance and is welded and fixed with the steel backing plate, and the exposed end of the bolt 13 penetrates through the lower flange plate 7 of the honeycomb beam assembly and is in threaded connection with the nut 14.
As the PHC pipe pile is a hollow cylindrical pre-tensioned prestressed reinforced concrete precast pile, the PHC pipe pile is mainly used for soft soil foundation engineering in coastal areas in the past, but with the development of modern high-speed railways, the soft foundation treatment mode of the traditional beam manufacturing and storing pedestal foundation cannot meet the use requirement, the PHC pipe pile (high-strength prestressed concrete pipe pile) adopted as the beam manufacturing and storing pedestal foundation is a new soft foundation treatment mode in recent years, and the PHC pipe pile is widely applied to large railway projects in China, and the construction technology is gradually improved. In future, the bridge construction should pay more attention to technical innovation, the green environmental protection idea in bridge engineering and the fine design and construction of the bridge.
The construction method of the high-speed railway beam-making pedestal suitable for unfavorable geology comprises the following steps:
leveling the field: and the measurement and setting-out and construction requirements are met, the construction measurement and marking are carried out on the 3 pile positions of the pipe piles according to the total plane layout of the precast beam yard, and then the pile placement is carried out on the construction pile positions.
According to survey data of the beam field geology, the stratum in the beam field area is divided into engineering geological layers of ploughing soil, silty clay, fine sand and weathered mudstone from top to bottom, according to the position relation of each part on the general plane diagram of the beam-making pedestal, the field of the preset area is cleaned, the position of a pile foundation is determined, construction measurement is carried out, marking is carried out, then pile placement is carried out on the construction pile position, and the deviation of the pile position is not larger than 10 mm.
(II) positioning the pipe pile: the pile driving equipment enters a field, moves to a pile position to be in place after installation and debugging, and conveys the qualified tubular pile to a pile position pile sinking point; hammering (or static pressure) pile sinking, and pile connecting and pile sending are carried out according to the design requirements.
The concrete pile sinking steps are as follows:
(1) after the piling equipment enters a field, is installed and debugged, the piling equipment is moved to a position needing to be driven, a platform supporting leg oil cylinder of the piling equipment is started, and the level is adjusted;
(2) lifting the lower section of pile to enable the pile tip to be vertically aligned with the center of the pile position, slowly putting down and inserting the lower section of pile into the soil, numbering according to the principle of firstly inner and then outer, firstly middle and then two sides, pressing the pile according to the numbering sequence, controlling the pressing speed in the pile pressing process, and recording the pressure value of a pressure gauge when the lower section of pile is inserted into the soil in detail;
(3) stopping pile pressing when the pile head of the lower pile is about one meter away from the ground, hoisting the upper pile by a crane, and starting to align and pile splicing; during pile splicing, the axes of an upper pile section and a lower pile section are consistent, gaps between the upper pile section and the lower pile section are firmly welded by using iron gasket pads, and symmetric welding is adopted during welding so as to reduce node bending caused by welding seam deformation;
(4) and (5) stopping pile pressing after the static pressure pile sinking is finished, and carrying out pile quality inspection according to the quality acceptance standard of the finished pile.
(III) pouring pile caps of the tubular piles: pouring a reinforced concrete pile cap after pile inspection, embedding a steel base plate 12 of a connecting piece in the pile cap according to the design requirement of a drawing, and welding the steel base plate 12 of a welding bolt 13 and the pile head of the tubular pile 3 together; the steel backing plate is a 480mm multiplied by 480mm steel plate, and 4 bolts with the diameter of 20mm are arranged in total.
(IV) installing a honeycomb beam assembly: and after the maintenance of the 3 pedestal of the tubular pile is finished, assembling the honeycomb beam assembly. Placing an end honeycomb beam 1 and a plurality of standard section honeycomb beams 2 according to a drawing, and connecting and fixing the end honeycomb beam 1 and the end of the standard section honeycomb beam 2 with a tubular pile 3 through a connecting piece 4; two adjacent rows of honeycomb beam assemblies are fixedly connected through a transverse connecting beam 5. In the embodiment shown in fig. 2, there are three rows of honeycomb beam assemblies, and the length of each longitudinal row of honeycomb beam assemblies is end honeycomb beam + n standard segment honeycomb beam + end honeycomb beam =4.25m + n × 5m +4.25 m.
Wherein, tip honeycomb roof beam 1 and standard section honeycomb roof beam 2 are connected through bolt 13 with the tubular pile basis, vertically through two side splice plate butt joints between tip honeycomb roof beam 1 and the standard section honeycomb roof beam 2, between two liang of adjacent standard section honeycomb roof beams 2, and transverse connection roof beam 5 adopts upper and lower twice I-steel to connect fixedly, keeps stable.
The utility model discloses the advantage that is different from prior art lies in:
(1) compared with a immersed tube cast-in-place pile, a cast-in-place pile and a manual hole digging pile with the same diameter, the factory-prefabricated PHC tubular pile has the advantages of high bearing capacity design value and reliable quality, can be widely applied to geology with various adverse conditions such as muddy clay, seasonal frozen soil, collapsible loess and the like, and can be well applied to geological conditions with large fluctuation change of a bearing stratum and containing a weak middle layer. Therefore, the PHC tubular pile is adopted to replace the traditional pile foundation, the transportation and hoisting are convenient, the pile splicing is rapid, the mechanical construction degree is high, the operation is simple, and the construction quality is easy to control.
(2) The beam-making pedestal formed by assembling the PHC tubular pile and the honeycomb beam assembly has good integrity and large structural rigidity, can effectively control foundation settlement, and ensures the production quality of the beam-making pedestal. The repeated utilization of the honeycomb beam assembly avoids the dismantling work of the pedestal foundation, fundamentally solves the technical problem of the post-field re-tillage, reduces the environmental pollution and realizes green construction.
(3) The adjusting steel plate can be directly placed at the top of the upper flange plate of the honeycomb beam assembly to adjust the reverse camber of the honeycomb beam assembly, so that the debugging precision is ensured, and the debugging time is shortened.
(4) The beam-making pedestal formed by assembling the PHC tubular piles and the honeycomb beam assembly does not need to dig a foundation pit, pour concrete, have no maintenance period, is clean and tidy in site, high in construction speed, low in construction cost and short in construction period, is finished and put into production in advance, and can generate great economic benefit and social value.
(5) The beam-making pedestal assembled and molded by the PHC tubular pile and the honeycomb beam assembly can avoid the construction of a concrete mixing station in the early construction period, reduces the construction and production pressure of the concrete mixing station in the early construction period, reduces the input amount and the manual input of large-scale equipment in the early construction period, and is convenient to manage.
To sum up, the utility model provides a system roof beam pedestal has following advantage and positive effect:
the beam-making pedestal can be widely applied to various unfavorable conditions such as muddy clay, seasonal frozen soil, collapsible loess and the like, and can be well applied to geological conditions with large fluctuation of a bearing stratum and containing a weak middle layer; the beam-making pedestal formed by assembling the PHC tubular pile and the honeycomb beam assembly has good integrity, large structural rigidity and small self weight, can effectively control foundation settlement, and ensures the production quality of the box beam; the PHC tubular pile, the customized end honeycomb beam and the standard section honeycomb beam are prefabricated, so that the transportation and hoisting are convenient, the pile splicing is quick, the mechanical construction degree is high, the operation is simple, and the construction quality is easy to control; the honeycomb beam assembly is repeatedly utilized, so that the dismantling work of a pedestal foundation is avoided, the technical problem of field re-ploughing in the later period is fundamentally solved, the environmental pollution is reduced, and green construction is realized; the adjusting steel plate is arranged at the top of the upper flange plate of the honeycomb beam assembly, so that the pre-camber debugging time can be shortened; the polygon hole in the middle of the standard section honeycomb beam can be operated by a worker entering the bottom of the box girder, and is convenient and fast, and the size of the hole can be customized according to requirements. In addition, a concrete mixing station can not be built in the early stage of construction, so that the building and production pressure of the early stage concrete mixing station is reduced, the input amount and the manual input of large-scale equipment in the early stage are reduced, and the management is convenient; the method has the advantages of no need of excavating a foundation pit on site, no concrete pouring, no maintenance period, neat site, high construction speed, low manufacturing cost and short construction period, and can produce great economic benefit and social value when the construction is completed and put into operation in advance.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the one described herein, and those skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed above.

Claims (8)

1. The utility model provides a high-speed railway system beam pedestal suitable for unfavorable geology which characterized in that: the device comprises more than two rows of pipe pile foundations, wherein each row of pipe pile foundations comprises a plurality of pipe piles arranged at intervals, a honeycomb beam assembly is erected on each row of pipe pile foundations, and a plurality of rows of honeycomb beam assemblies are arranged in parallel and connected with the pipe piles through connecting pieces; every two adjacent honeycomb beam assemblies are connected through a plurality of transverse connecting beams arranged at intervals.
2. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 1, wherein: the utility model discloses a tubular pile, including the tip honeycomb roof beam at both ends and the middle a plurality of standard section honeycomb roof beams that link to each other in proper order of honeycomb roof beam subassembly, tip honeycomb roof beam all sets up on the tubular pile with juncture of standard section honeycomb roof beam, juncture of adjacent standard section honeycomb roof beam, tip honeycomb roof beam all links to each other with the tubular pile is fixed through the connecting piece with the tip of standard section honeycomb roof beam.
3. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 2, wherein: the end honeycomb beam comprises an upper flange plate, a lower flange plate and two webs, the two webs are arranged between the upper flange plate and the lower flange plate in parallel, and polygonal holes are horizontally arranged in parallel in the middles of the two webs; the standard section honeycomb beam is I-shaped, the standard section honeycomb beam comprises an upper flange plate, a lower flange plate and a web plate arranged between the upper flange plate and the lower flange plate, and polygonal holes are horizontally arranged in the middle of the web plate in parallel.
4. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 3, wherein: ribbed plates are vertically arranged on the outer sides of the webs of the end honeycomb beam and the standard section honeycomb beam at intervals; and a connecting part is reserved between the rib plate arranged at the end part of the end honeycomb beam and the tail end of the end honeycomb beam, and two ends of the transverse connecting beam are matched with the connecting part and the adjacent rib plate.
5. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 2, wherein: and the two sides of the longitudinal junction between the end honeycomb beam and the standard section honeycomb beam and between the end honeycomb beam and the adjacent standard section honeycomb beam are connected through splice plates.
6. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 2, wherein: the transverse connecting beam comprises two rows of I-shaped steel, the two rows of I-shaped steel are arranged between adjacent end honeycomb beams and between adjacent standard section honeycomb beams in parallel up and down, and the I-shaped steel is perpendicular to the end honeycomb beams and the standard section honeycomb beams.
7. A high speed railway girder fabrication bench adapted for use in unfavorable geology according to any one of claims 1 to 6, wherein: the pipe pile is a PHC pipe pile, the PHC pipe pile is formed in a split mode, the PHC pipe pile comprises a pile body and a pile cap used for being connected with a connecting piece, the pile body comprises a lower pile section and an upper pile section, and the distance between the junction of the lower pile section and the upper pile section and the ground is 1 +/-0.1 m; the lower pile section and the upper pile section are welded and fixed through sizing blocks; the pile cap is arranged at the top of the pile head of the upper section of pile.
8. A high speed railway beam forming pedestal adapted for use in unfavorable geology as set forth in claim 7, wherein: the pile cap is cast-in-place reinforced concrete; the connecting piece includes steel backing plate, bolt and complex nut with it, the steel backing plate is pre-buried in the pile cap, the bolt runs through the steel backing plate in advance and welded fastening with it, the end that exposes of bolt links to each other with the honeycomb roof beam subassembly, and is fixed with nut threaded connection.
CN201921809090.3U 2019-10-25 2019-10-25 High-speed railway beam-making pedestal suitable for unfavorable geology Active CN211333866U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110666953A (en) * 2019-10-25 2020-01-10 石家庄铁道大学 High-speed railway beam-making pedestal suitable for unfavorable geology and construction method thereof
CN115091607A (en) * 2022-07-14 2022-09-23 华能铜川照金煤电有限公司 Construction method for accurately positioning pre-camber of precast beam pedestal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110666953A (en) * 2019-10-25 2020-01-10 石家庄铁道大学 High-speed railway beam-making pedestal suitable for unfavorable geology and construction method thereof
CN115091607A (en) * 2022-07-14 2022-09-23 华能铜川照金煤电有限公司 Construction method for accurately positioning pre-camber of precast beam pedestal
CN115091607B (en) * 2022-07-14 2024-01-16 华能铜川照金煤电有限公司 Construction method for accurately positioning pre-camber of precast beam pedestal

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