CN213766424U - Pretensioning prestressed concrete assembled prefabricated pedestal - Google Patents
Pretensioning prestressed concrete assembled prefabricated pedestal Download PDFInfo
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- CN213766424U CN213766424U CN202022269532.9U CN202022269532U CN213766424U CN 213766424 U CN213766424 U CN 213766424U CN 202022269532 U CN202022269532 U CN 202022269532U CN 213766424 U CN213766424 U CN 213766424U
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Abstract
The utility model discloses a pretensioning prestressed concrete assembled precast pedestal, which comprises a middle supporting structure, an end supporting structure and a tensioning adjusting component, wherein the middle supporting structure and the end supporting structure form a stable structure system for tensioning prestressed tendons, the tensioning adjusting component replaces the traditional jack to tension the prestressed tendons, the tensioning force is easy to adjust and control stably, in addition, a pressure gauge is arranged to be matched with the tensioning adjusting mechanism for use in the construction process, the prestress can be monitored in real time, the precast pedestal can realize self stress balance by arranging a balancing weight, a bearing column is arranged into a segmented structure, the whole length can be changed according to actual needs, the whole pretensioning prestressed concrete assembled precast pedestal is energy-saving and environment-friendly, the cost is saved, the tensioning process of the prestressed tendons is safe and stable and easy to control, all the structures adopt an assembled form, the manufacturing, installation and construction are simple and rapid, the turnover and use are convenient, and the construction progress is accelerated.
Description
Technical Field
The utility model relates to a prestressed concrete engineering pretensioning method construction temporary facilities technical field. More specifically, the utility model relates to a pretensioning prestressed concrete assembled prefabrication pedestal.
Background
The pretensioned prestressed concrete member has the advantages of simple production process, low cost, quick turnover of prefabricated site and the like, and is widely applied to projects such as highway bridges, hydraulic wharfs and the like. The pre-tensioning prestressed concrete member needs to use a pre-tensioning pedestal, and the common pre-tensioning pedestal has pier type pedestal, compression column type pedestal, pier plate type tensioning pedestal and other types. The common prefabricated pedestal is mainly of a concrete structure, the concrete consumption is large, the structure is heavy, the foundation needs to be excavated during construction, the assembly degree is low, the structure can not be reused basically, and the tension force can not be monitored and adjusted in real time during construction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pretensioning method prestressed concrete assembled prefabrication pedestal to solve the prefabrication pedestal among the prior art and can't adjust the technical problem of stretching force in real time in the work progress.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a pretensioned prestressed concrete fabricated precast deck including:
the middle supporting structure comprises a plurality of pressure-bearing columns which are sequentially arranged in parallel and are all positioned in a horizontal plane, and a connecting beam is connected between every two adjacent pressure-bearing columns;
the end part supporting structures are arranged at two ends of the middle supporting structure and comprise supporting beams, two ends of each bearing column are connected with one supporting beam, brackets are vertically arranged on the supporting beams, and a connecting beam is connected between every two adjacent supporting beams;
the tensioning adjusting assemblies are arranged at two ends of the middle supporting structure and comprise steel cross beams used for fixing two ends of the prestressed tendon, the steel cross beams are horizontally arranged on the supporting beams corresponding to the sides and are perpendicular to the length direction of the bearing column, and the steel cross beams are located on the outer sides of the corbels and are provided with tensioning adjusting mechanisms between the corbels corresponding to the sides.
Preferably, the tension adjusting mechanism includes:
the outer ends of the two opposite sliding groove tracks on each pair of bases incline towards opposite directions and have the same included angle with the bearing column;
the trapezoidal sliding boxes are respectively arranged between two opposite sliding groove tracks on each pair of bases, a pair of vertical side surfaces of the trapezoidal sliding boxes are mutually parallel, and a pair of horizontal side surfaces of the trapezoidal sliding boxes are inclined surfaces and are respectively in sliding connection with the sliding groove tracks on the corresponding side;
and the screw rod is horizontally arranged in the two trapezoidal sliding boxes between each pair of bases in a penetrating manner, the penetrating direction of the screw rod is perpendicular to the pressure-bearing column, and two ends of the screw rod are positioned outside the two trapezoidal sliding boxes and are respectively provided with nuts.
Preferably, a gasket is arranged between the nut and the trapezoidal sliding box on the corresponding side, and the gasket is sleeved on the screw rod.
Preferably, the pressure-bearing column is formed by sequentially connecting a plurality of pressure-bearing sections.
Preferably, the bearing section is a section steel or a steel pipe.
Preferably, the steel pipe is internally cast with concrete.
Preferably, a diagonal brace is connected between one side of the bracket close to the bearing column and the supporting beam.
Preferably, a stiffening plate is connected between one side of the bracket, which is close to the bearing column, and the support beam.
Preferably, a pressure gauge is arranged between the tensioning adjusting mechanism and the steel beam or the bracket.
Preferably, the tip bearing structure still including set up in the balancing weight at middle part bearing structure's both ends, balancing weight fixed connection correspond the side on the supporting beam and be located and correspond the side the outside of steel crossbeam, the balancing weight with leave between the steel crossbeam the stretch-draw space of prestressing tendons.
The utility model discloses at least, include following beneficial effect: the pre-tensioning prestressed concrete assembled prefabricated pedestal comprises a middle supporting structure, an end supporting structure and a tensioning adjusting component, wherein the middle supporting structure and the end supporting structure form a stable structure system for tensioning the prestressed tendons, the tensioning adjusting component replaces a traditional jack and adjusts the tensioning force of the prestressed tendons, so that the tensioning force adjusting process of the prestressed tendons is easy to control and stable, all the structures adopt an assembling mode, the fabrication, installation and construction are simple and quick, the use is convenient, in addition, the pressure gauge can monitor the prestress in real time in the construction process, the tensioning adjusting mechanism is matched, the prefabricated pedestal can realize self stress balance by arranging a balancing weight, and the bearing columns are arranged into a plurality of bearing sections which are formed by interconnection, the integral length of the pre-tensioning prestressed concrete assembled prefabricated pedestal can be changed according to actual needs, and moreover, the whole pretensioning prestressed concrete assembly type prefabricated pedestal is energy-saving and environment-friendly, saves the cost, accelerates the construction progress and shortens the construction period.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is a side view of the structure of the present invention;
fig. 3 is a top view structural diagram of the middle tension adjusting mechanism of the present invention.
The specification reference numbers indicate: 1. the bearing column, 2, the tie beam, 3, the supporting beam, 4, the bracket, 5, the prestressing tendons, 6, the steel crossbeam, 7, stretch-draw adjustment mechanism, 8, the base, 9, the spout track, 10, trapezoidal slide box, 11, the screw rod, 12, the nut, 13, the gasket, 14, the bracing, 15, the stiffening plate, 16, the pressure gauge, 17, the balancing weight, 18, the distributive girder, 19, the panel, 20, the bolt.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1:
as shown in fig. 1-2, the pre-tensioned prestressed concrete prefabricated pedestal of the present invention comprises:
the middle supporting structure comprises a plurality of pressure-bearing columns 1 which are sequentially arranged in parallel and are all positioned in a horizontal plane, and a connecting beam 2 is connected between every two adjacent pressure-bearing columns 1;
the end part supporting structures are arranged at two ends of the middle part supporting structure and comprise supporting beams 3, two ends of each bearing column 1 are connected with one supporting beam 3, brackets 4 are vertically arranged on the supporting beams 3, and a connecting beam 2 is connected between every two adjacent supporting beams 3;
the tensioning adjusting assemblies are arranged at two ends of the middle supporting structure and comprise steel cross beams 6 used for fixing two ends of the prestressed tendons 5, the steel cross beams 6 are horizontally arranged on the supporting beams 3 on the corresponding sides and are perpendicular to the length direction of the bearing column 1, and the steel cross beams 6 are located on the outer sides of the brackets 4 and are provided with tensioning adjusting mechanisms 7 between the brackets 4 on the corresponding sides.
The use method of the pretensioning prestressed concrete assembled prefabricated pedestal comprises the following steps:
(1) before the use, at mill or on-the-spot processing factory, according to design and construction requirement, can adopt materials such as shaped steel, steel sheet, prefabricated processing supporting beam 3, bracket 4, coupling beam 2, the bearing post 1 forms middle part bearing structure with coupling beam 2 of connecting between the bearing post 1, supporting beam 3, coupling beam 2 between bracket 4 and the supporting beam 3 forms the tip bearing structure, middle part bearing structure internal connection department, tip bearing structure internal connection department all can adopt the welding, form standard architecture, can adopt bolt 20 to be connected between supporting beam 3 and the bearing post 1, make things convenient for the later stage to have enough to meet the need the use.
(2) The standard formwork system is prefabricated and comprises distribution beams 18 and panels 19 shown in the figure 2 and is used for pouring concrete on the panels 19, each distribution beam 18 is perpendicular to the pressure-bearing columns 1 and horizontally arranged, welding can be adopted between the panels 19 and the distribution beams 18 and between the distribution beams 18 and the pressure-bearing columns 1 during field installation, and the overall size of the standard formwork system is matched with a middle supporting structure and meets the size requirement of the concrete poured on the tensioned prestressed tendons 5.
(3) After the site leveling treatment meets the construction requirements, the structures are assembled on site by adopting lifting and transporting equipment, the end supporting structure and the middle supporting structure are connected by adopting bolts 20, then a standard template system is installed on the middle supporting structure, and a steel beam 6 and a tension adjusting mechanism 7 of a tension adjusting assembly are installed on the end supporting structure.
(4) When the pre-tensioning prestressed concrete assembled prefabricated pedestal is used, the prestressed tendons 5 are arranged along the length direction of the pressure-bearing column 1, two ends of each prestressed tendon 5 are fixed with the corresponding steel cross beam 6, the steel cross beams 6 are subjected to the reaction force, namely the tensile force, of the prestressed tendons 5 so as to abut against the tensioning adjusting mechanisms 7, the tensioning adjusting mechanisms 7 abut against the corbels 4, and then the tensioning adjusting mechanisms 7 adjust the tensioning force on the prestressed tendons 5 by adjusting the distance between the steel cross beams 6 and the corbels 4 on the corresponding sides; the tensioning adjusting mechanism 7 is adopted to replace a traditional jack to tension the prestressed tendon 5, and the tensioning length of the prestressed tendon 5 to be achieved can be adjusted at any time according to construction needs in the construction process, so that the tensioning process is easy to control.
(5) After construction is completed, the construction equipment is disassembled reversely according to the installation sequence, and all the disassembled parts are reserved for turnover use.
Further, as shown in fig. 1-2, the pressure-bearing column 1 is formed by sequentially connecting a plurality of pressure-bearing sections;
the pressure-bearing section is made of section steel or a steel pipe;
concrete is poured inside the steel pipe.
From this, set up pressure-bearing post 1 into a plurality of the same pressure-bearing section and connect and form, according to actual construction needs accessible change the holistic length of prefabricated pedestal of quantity of pressure-bearing section, show the level of assembling that improves prefabricated pedestal, connect through bolt 20 between each pressure-bearing section.
And the bearing section can be made of profile steel or steel pipes, is balanced by self stress, and is simple and rapid to manufacture, install and construct.
And concrete is selectively poured in the steel pipe according to the stress requirement to form the steel pipe concrete, so that the stress bearing capacity is enhanced, and the requirement for larger tension force is met.
Example 2:
this embodiment differs from embodiment 1 only in that, as shown in fig. 1 to 3, the tension adjusting mechanism 7 includes:
the base 8 is provided with a plurality of pairs, two outer side surfaces of each pair of bases 8 respectively abut against the steel beam 6 and the bracket 4 which are positioned at the same end of the pressure-bearing column 1, two opposite inner side surfaces of each pair of bases 8 are horizontally provided with a pair of chute rails 9, the outer ends of the two opposite chute rails 9 on each pair of bases 8 incline towards opposite directions, and the included angles between the outer ends and the pressure-bearing column 1 are the same;
the trapezoidal sliding boxes 10 are respectively arranged between the two opposite sliding groove rails 9 on each pair of bases 8, a pair of vertical side surfaces of the trapezoidal sliding boxes 10 are parallel to each other, and a pair of horizontal side surfaces of the trapezoidal sliding boxes are inclined surfaces and are respectively connected with the sliding groove rails 9 on the corresponding side in a sliding manner;
the screw rods 11 horizontally penetrate through the two trapezoidal sliding boxes 10 between each pair of bases 8, the penetrating direction of the screw rods 11 is perpendicular to the pressure-bearing column 1, and two ends of the screw rods 11 are positioned outside the two trapezoidal sliding boxes 10 and are respectively provided with nuts 12; further, a gasket 13 is arranged between the nut 12 and the trapezoidal sliding box 10 on the corresponding side, and the gasket 13 is sleeved on the screw rod 11.
When the tensioning force of the prestressed tendon 5 is adjusted through the tensioning adjusting mechanism 7, nuts 12 are simultaneously screwed up in opposite directions at two ends of a screw rod 11 of each pair of bases 8, two trapezoidal sliding boxes 10 slide in sliding groove tracks 9 on corresponding sides, so that the distance between the two trapezoidal sliding boxes 10 between each pair of bases 8 is reduced, because the two sides of the trapezoidal sliding boxes 10 in the length direction of the bearing column 1 are inclined planes, opposite jacking forces are given to the corresponding pair of bases 8 when the trapezoidal sliding boxes 10 move, the distance between the base 8 close to one side of the steel beam 6 and the steel beam 6 close to the bracket 4 in the pair of bases 8 is increased, the tensioning force of the prestressed tendon 5 is improved, and the tensioning force of the prestressed tendon 5 can be continuously and accurately adjusted through adjusting the transverse moving length of the nuts 12 on the screw rod 11.
Example 3:
the present embodiment is different from embodiment 1 only in that, as shown in fig. 1-2, a pressure gauge 16 is provided between the tension adjusting mechanism 7 and the steel beam 6 or the corbel 4;
tip bearing structure still including set up in the balancing weight 17 at middle part bearing structure's both ends, balancing weight 17 fixed connection correspond the side on the supporting beam 3 and be located and correspond the side the outside of steel crossbeam 6, balancing weight 17 with leave between the steel crossbeam 6 the stretch-draw space of prestressing tendons 5.
One side through at stretch-draw adjustment mechanism 7 sets up pressure gauge 16, and in the prefabrication pedestal use, stretch-draw adjustment mechanism 7 uses with pressure gauge 16 cooperation, can real time monitoring and adjust 5 tensile forces of prestressing tendons for pretension method prestressed concrete component is in controllable within range all the time at the stress state of prefabrication process.
And, through set up the balancing weight 17 on the end bearing structure, the pressure of 5 pairs of prestressed tendons to the bracket 4 fixed on the supporting beam 3 of balance, avoid the supporting beam 3, the whole bending that takes place upwards in the tip of supporting beam 3 of bearing post 1, improve the stability of pretensioning prestressed concrete assembled prefabricated pedestal overall structure and to 5 tensings of prestressed tendons, and the weight and the quantity of balancing weight 17 can be adjusted according to the actual atress condition.
Example 4:
the present embodiment is different from embodiment 1 only in that, as shown in fig. 1-2, a diagonal brace 14 is connected between one side of the corbel 4 close to the pressure bearing column 1 and the support beam 3;
and a stiffening plate 15 is connected between one side of the bracket 4 close to the bearing column 1 and the supporting beam 3.
By arranging the inclined strut 14 between the bracket 4 and the supporting beam 3 on which the bracket 4 is arranged, the structural stability of the bracket 4 is enhanced, and the safe and powerful support is provided for the end part of the prestressed tendon 5.
In addition, the stiffening plate 15 is arranged between the bracket 4 and the supporting beam 3 where the bracket 4 is positioned, so that the structural stability of the bracket 4 is further enhanced, and safe and powerful support is provided for the end part of the prestressed tendon 5.
To sum up, the utility model comprises a middle supporting structure, an end supporting structure and a tensioning adjusting component, wherein the middle supporting structure and the end supporting structure form a stable structure system for tensioning the prestressed tendons, the tensioning adjusting component replaces the traditional jack to tension the prestressed tendons, so that the tensioning force of the prestressed tendons is easy to adjust and stable to control, all the structures adopt an assembling form, the manufacture, installation and construction are simple and quick, the use in circulation is convenient, in addition, the pressure gauge is arranged to monitor the prestressed force in real time in the construction process, the tensioning adjusting mechanism is matched to better tension and adjust the prestressed tendons, the prefabricated pedestal can realize self stress balance by arranging a balancing weight, and the bearing columns are arranged into a plurality of bearing sections which are connected with each other, the whole length of the pretensioning prestressed concrete assembled prefabricated pedestal can be changed according to actual needs, the whole pretensioning prestressed concrete assembly type prefabricated pedestal is energy-saving and environment-friendly, saves the cost, accelerates the construction progress, shortens the construction period and ensures that the tensioning process of the prestressed reinforcing steel bar is safe and efficient.
It should be noted that the technical features of the above embodiments 1 to 4 can be arbitrarily combined, and the technical solutions obtained by combining the technical features belong to the scope of the present application. While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and figures 1, 2, 3 shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (10)
1. Pretensioning prestressed concrete assembled prefabrication pedestal, its characterized in that includes:
the middle supporting structure comprises a plurality of pressure-bearing columns which are sequentially arranged in parallel and are all positioned in a horizontal plane, and a connecting beam is connected between every two adjacent pressure-bearing columns;
the end part supporting structures are arranged at two ends of the middle supporting structure and comprise supporting beams, two ends of each bearing column are connected with one supporting beam, brackets are vertically arranged on the supporting beams, and a connecting beam is connected between every two adjacent supporting beams;
the tensioning adjusting assemblies are arranged at two ends of the middle supporting structure and comprise steel cross beams used for fixing two ends of the prestressed tendon, the steel cross beams are horizontally arranged on the supporting beams corresponding to the sides and are perpendicular to the length direction of the bearing column, and the steel cross beams are located on the outer sides of the corbels and are provided with tensioning adjusting mechanisms between the corbels corresponding to the sides.
2. The pretensioned prestressed concrete prefabricated pedestal of claim 1 wherein said tension adjusting mechanism comprises:
the outer ends of the two opposite sliding groove tracks on each pair of bases incline towards opposite directions and have the same included angle with the bearing column;
the trapezoidal sliding boxes are respectively arranged between two opposite sliding groove tracks on each pair of bases, a pair of vertical side surfaces of the trapezoidal sliding boxes are mutually parallel, and a pair of horizontal side surfaces of the trapezoidal sliding boxes are inclined surfaces and are respectively in sliding connection with the sliding groove tracks on the corresponding side;
and the screw rod is horizontally arranged in the two trapezoidal sliding boxes between each pair of bases in a penetrating manner, the penetrating direction of the screw rod is perpendicular to the pressure-bearing column, and two ends of the screw rod are positioned outside the two trapezoidal sliding boxes and are respectively provided with nuts.
3. The pre-tensioned prestressed concrete fabricated precast block as recited in claim 2, wherein a spacer is provided between said nut and said trapezoidal slide box on the corresponding side, and said spacer is fitted over said screw rod.
4. The pre-tensioned prestressed concrete fabricated precast deck as recited in claim 1, wherein said pressure-bearing column is formed by connecting a plurality of pressure-bearing sections in sequence.
5. The pre-tensioned prestressed concrete fabricated precast deck as recited in claim 4, wherein said bearing section is a steel section or a steel pipe.
6. The pre-tensioned prestressed concrete fabricated precast deck as recited in claim 5, wherein said steel pipes are internally cast with concrete.
7. The pre-tensioned prestressed concrete fabricated precast deck as recited in claim 1, wherein a diagonal brace is connected between a side of said corbel near said bearing column and said support beam.
8. The pre-tensioned prestressed concrete fabricated precast deck as recited in claim 1, wherein a stiffening plate is connected between one side of said corbel near said bearing column and said support beam.
9. The pre-tensioned prestressed concrete fabricated prefabrication pedestal of claim 1, wherein a pressure gauge is provided between said tensioning adjustment mechanism and said steel beam or said corbel.
10. The pre-tensioned prestressed concrete fabricated precast block of claim 1, wherein said end support structure further comprises counterweights disposed at both ends of said middle support structure, said counterweights being fixedly connected to said support beams on the corresponding sides and located outside said steel beams on the corresponding sides, and a tension space for said tendons being left between said counterweights and said steel beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022269532.9U CN213766424U (en) | 2020-10-13 | 2020-10-13 | Pretensioning prestressed concrete assembled prefabricated pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022269532.9U CN213766424U (en) | 2020-10-13 | 2020-10-13 | Pretensioning prestressed concrete assembled prefabricated pedestal |
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| Publication Number | Publication Date |
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| CN213766424U true CN213766424U (en) | 2021-07-23 |
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|---|---|---|---|
| CN202022269532.9U Active CN213766424U (en) | 2020-10-13 | 2020-10-13 | Pretensioning prestressed concrete assembled prefabricated pedestal |
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| CN (1) | CN213766424U (en) |
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- 2020-10-13 CN CN202022269532.9U patent/CN213766424U/en active Active
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