CN110258333A - The jig structure and its application method of leveling connection are quickly positioned for Precast Pier Columns - Google Patents
The jig structure and its application method of leveling connection are quickly positioned for Precast Pier Columns Download PDFInfo
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- CN110258333A CN110258333A CN201910362917.9A CN201910362917A CN110258333A CN 110258333 A CN110258333 A CN 110258333A CN 201910362917 A CN201910362917 A CN 201910362917A CN 110258333 A CN110258333 A CN 110258333A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 55
- 239000010959 steel Substances 0.000 claims description 55
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 abstract 3
- 238000010276 construction Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of for Precast Pier Columns quickly positions the jig structure of leveling connection and its application method, the jig structure include upper frame and lower frame；The upper frame is hollow closed framework structure, the lateral surface of the Precast Pier Columns is arranged without departing from the lateral surface of upper frame, the upper frame is equipped with the first reinforcing bar location hole that is consistent with the main reinforcement quantity of Precast Pier Columns and passing through for main reinforcement, several pier stud bolts hole and several first bolts hole are additionally provided on the upper frame, the pier stud bolt hole with Precast Pier Columns for being fixedly connected, and first bolt hole with lower frame for being fixedly connected；The lower frame is hollow closed framework structure, the lateral surface of the upper frame is located within the lateral surface of lower frame, the lower frame is equipped with to be equipped with and one-to-one second bolt hole of the first bolt hole with the one-to-one second reinforcing bar location hole of the first reinforcing bar location hole, the lower frame.Precast Pier Columns positioning can be rapidly completed in the present invention.
Description
Technical Field
The invention particularly relates to a jig frame structure for rapid positioning, leveling and connecting prefabricated pier columns and a using method thereof.
Background
At present, the construction of urban bridge substructure in China still mainly adopts the cast-in-place technology, and the problems of long construction period, great influence on road traffic, great interference of generated dust, mud, noise and the like on the environment exist, so that the civil construction requirement is difficult to meet.
The prefabricated pier column construction technology can solve the problems existing in the cast-in-place technology by virtue of the advantages of rapidness, intensification and environmental protection. However, in the installation of the prefabricated pier stud, because the prefabricated pier stud is heavy in weight and the prefabricated structure and the reserved hole have deviation, the positioning and verticality control difficulty and time consumption of the prefabricated pier stud are easy to be large, and before the prefabricated pier stud and the bearing platform are firmly connected by adopting construction methods such as wet joint, sleeve grouting and prestressed tendons, a temporary fixing and supporting device needs to be arranged to temporarily fix the prefabricated pier stud, so that the construction difficulty and risk are increased. Therefore, how to quickly position and control the verticality of the prefabricated pier stud, the prefabricated pier stud is quickly and firmly connected with the bearing platform, and the construction progress and quality of the prefabricated pier stud are directly influenced.
Disclosure of Invention
Aiming at the construction problems of the existing prefabricated pier stud, the invention aims to provide the jig frame structure for the rapid positioning, leveling and connecting of the prefabricated pier stud and the using method thereof, which can rapidly complete the positioning of the prefabricated pier stud, reduce the frequency of rechecking the perpendicularity of the pier stud, do not need to be provided with a temporary supporting device, enhance the connection integrity between the prefabricated pier stud and a bearing platform, realize the rapid positioning, leveling and connecting of the prefabricated pier stud and achieve the rapid installation requirement.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a bed-jig structure for the quick positioning, leveling and connecting of prefabricated pier stud comprises an upper frame and a lower frame; wherein,
the upper frame is of a hollow closed frame structure, the outer side surface of the prefabricated pier stud does not exceed the outer side surface of the upper frame, a first steel bar positioning hole which is consistent with the number of main steel bars of the prefabricated pier stud and can be penetrated by the main steel bars is arranged on the upper frame, a plurality of pier stud bolt holes and a plurality of first bolt holes are further arranged on the upper frame, the pier stud bolt holes are used for being fixedly connected with the prefabricated pier stud, and the first bolt holes are used for being fixedly connected with the lower frame;
the lower frame is of a hollow closed frame structure, the outer side face of the upper frame is located in the outer side face of the lower frame, second steel bar positioning holes which correspond to the first steel bar positioning holes one by one are formed in the lower frame, and second bolt holes which correspond to the first bolt holes one by one are formed in the lower frame.
According to the technical scheme, the jig frame structure further comprises at least two positioning plates, the lower frame is provided with positioning grooves for mounting the positioning plates, and the at least two positioning plates are arranged in a non-parallel mode and used for positioning the upper frame, so that all the first steel bar positioning holes of the upper frame are located right above the second steel bar positioning holes of the lower frame corresponding to the first steel bar positioning holes.
According to the technical scheme, the number of the positioning plates is two, and the two positioning plates are used for positioning two adjacent outer contour surfaces of the upper frame.
According to the technical scheme, the number of the pier stud bolt holes is 2-10, and the pier stud bolt holes are uniformly distributed on the upper frame.
According to the technical scheme, the number of the first bolt holes is 2-10, and the first bolt holes are uniformly distributed on the upper frame.
According to the technical scheme, the jig frame structure further comprises a plurality of fixing blocks, and the fixing blocks are arranged on the periphery of the lower frame and used for fixedly installing the lower frame in a bearing platform matched with the prefabricated pier stud.
A use method of a jig frame structure for rapid positioning and leveling connection of prefabricated pier columns comprises the following steps:
s1, inserting all main steel bars reserved at the bottom of the prefabricated pier stud into first steel bar positioning holes corresponding to the upper frame, pouring the prefabricated pier stud after the main steel bars are accepted, reserving grouting holes and exhaust holes for grouting into the jig frame structure at the bottom of the prefabricated pier stud in the pouring process, detaching the upper frame after the prefabricated pier stud is cured, leveling the bottom surface of the prefabricated pier stud in contact with the upper frame, fixedly installing the upper frame at the bottom of the prefabricated pier stud through bolts penetrating through pier stud bolt holes, and filling gaps between the main steel bars of the prefabricated pier stud and the first bolt holes with slurry;
s2, pouring a bearing platform, and reserving an installation groove for installing the prefabricated pier stud at the top of the bearing platform before pouring;
s3, after the maintenance of the bearing platform is finished, placing the lower frame in the installation groove, fixedly installing the lower frame on the bearing platform, drilling a corresponding reinforcing steel bar hole in the bearing platform along the height direction of the bearing platform through a second reinforcing steel bar positioning hole of the lower frame, wherein the depth of the reinforcing steel bar hole is greater than the length of a main reinforcing steel bar reserved at the bottom of the prefabricated pier column, and grouting into the reinforcing steel bar hole;
s4, before the slurry in the steel bar hole is initially set, hoisting the prefabricated pier stud with the upper frame above the lower frame, enabling all first steel bar positioning holes of the upper frame to be positioned right above second steel bar positioning holes of the lower frame corresponding to the first steel bar positioning holes, then inserting all main steel bars of the prefabricated pier stud into the steel bar holes through the second steel bar positioning holes corresponding to the lower frame, enabling the upper frame to be tightly attached to the lower frame, and fixing the upper frame and the lower frame into a whole through bolts penetrating through the first bolt holes and the second bolt holes;
and S5, grouting into the hollow channels of the upper frame and the lower frame through grouting holes reserved at the bottom of the prefabricated pier stud, grouting into the mounting groove reserved at the top of the bearing platform, and completing the mounting of the prefabricated pier stud after the maintenance is completed.
According to the above technical scheme, when the adopted jig frame structure comprises the positioning plate, the step S4 further comprises: before the prefabricated pier stud is hoisted, the positioning plates are arranged in the positioning grooves corresponding to the lower frame, then the prefabricated pier stud with the upper frame is hoisted to the upper side of the lower frame before slurry in the reinforcing steel bar hole is initially set, one side face of the upper frame is enabled to be tightly attached to one positioning plate to move until other side faces of the upper frame are contacted with other positioning plates, all first reinforcing steel bar positioning holes of the upper frame are located right above second reinforcing steel bar positioning holes of the lower frame corresponding to the first reinforcing steel bar positioning holes, and all the positioning plates are detached after the upper frame and the lower frame are connected through bolts.
According to the above technical solution, step S4 further includes: and fixing the upper frame and the frame by using bolts, and welding the upper frame and the lower frame into a whole by using electric welding.
The invention has the following beneficial effects:
(1) aiming at the problem that the preformed pier column reserved steel bars cannot be inserted into the reserved holes due to the fact that the positions of the reserved steel bars at the bottom of the preformed pier column and the positions of the reserved holes of the bearing platform are deviated due to construction or other reasons in the installation process of the existing preformed pier column, the invention designs the jig frame structure with the upper frame and the lower frame, and the upper frame and the lower frame are provided with the steel bar holes which correspond to each other one by one, so that the prefabricated pier column steel bars can be ensured to be accurately inserted into the reserved holes on the bearing platform, and the phenomenon that the positions of the reserved steel bars at the bottom of the preformed pier column and the positions of the reserved holes;
(2) aiming at the problems of high difficulty in adjustment and checking and long time consumption caused by repeated adjustment and checking of hoisting by using a jack or a wedge block and each side surface of a prefabricated pier stud in the existing process of checking the verticality of the prefabricated pier stud, the invention designs the jig frame structure with the upper frame and the lower frame, which can be used for pre-installing the upper frame and the lower frame before hoisting, so that the prefabricated pier stud is in contact with a bearing platform through the upper frame and the lower frame, and the horizontal contact surfaces of the upper frame and the lower frame are pre-checked, so that the horizontal sections of the upper frame, the lower frame and the prefabricated pier stud are kept, the installation verticality of the prefabricated pier stud is ensured before hoisting the prefabricated pier stud, and when the prefabricated pier stud is hoisted in place, only one-time checking and confirmation are needed, so that the times of checking the verticality of the prefabricated pier stud;
(3) aiming at the problems that the installation difficulty and the danger are increased due to the fact that a temporary prefabricated pier column fixing device needs to be additionally arranged before the existing prefabricated pier column is firmly connected with a bearing platform, the invention designs the jig frame structure with the upper frame and the lower frame.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of an upper frame in an embodiment of the present invention;
FIG. 3 is a top view of a lower frame in an embodiment of the present invention;
fig. 4 is a schematic view illustrating grouting of a prefabricated pier stud using an upper frame according to an embodiment of the present invention;
FIG. 5 is a schematic view of the connection of the upper frame to the prefabricated pier stud according to an embodiment of the present invention;
FIG. 6 is a top view of the lower frame coupled to the platform in an embodiment of the present invention;
FIG. 7 is a side view of a lower frame coupled to a platform according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a cap with a steel bar hole drilled therein according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a cap after grouting of the tendon holes according to the embodiment of the present invention;
fig. 10 is a schematic view of the installation of the prefabricated pier stud according to the embodiment of the present invention.
In the figure: 100-upper frame, 101-first steel bar positioning hole, 102-pier stud bolt hole, 103-first bolt hole, 200-lower frame, 201-second steel bar positioning hole, 202-second bolt hole, 203-positioning groove, 204-positioning plate, 205-fixing block, 206-bolt, 300-prefabricated pier stud, 301-grouting hole, 302-exhaust hole, 303-main steel bar, 400-bearing platform and 401-steel bar hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be 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 some, but not all, embodiments of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-3, a jig frame structure for prefabricating a quick positioning and leveling connection of a pier stud comprises an upper frame 100 and a lower frame 200; wherein,
the upper frame 100 is of a hollow closed frame structure, the outer side surface of the prefabricated pier stud 300 does not exceed the outer side surface of the upper frame 100 (generally, the prefabricated pier stud is integrally positioned in the upper frame, namely, the external dimension of the prefabricated pier stud is smaller than that of the upper frame), the upper frame 100 is provided with a first steel bar positioning hole 101 which is consistent with the number of main steel bars 303 of the prefabricated pier stud 300 and can be used for the main steel bars 303 to pass through, the upper frame 100 is also provided with a plurality of pier stud bolt holes 102 and a plurality of first bolt holes 103, the pier stud bolt holes 102 are used for being fixedly connected with the prefabricated pier stud 300, and the first bolt holes 103 are used for being fixedly connected with the lower frame 200;
the lower frame 200 is a hollow closed frame structure, the outer side surface of the upper frame 100 is located inside the outer side surface of the lower frame 200 (i.e. the outer dimension of the upper frame is smaller than the outer dimension of the lower frame), the lower frame 200 is provided with second reinforcement positioning holes 201 corresponding to the first reinforcement positioning holes 101 one by one, and the lower frame 200 is provided with second bolt holes 202 corresponding to the first bolt holes 103 one by one.
In a preferred embodiment of the present invention, as shown in fig. 3 and 9, the jig frame structure further includes at least two positioning plates 204, the lower frame 200 is provided with positioning slots 203 for mounting the positioning plates 204, and the at least two positioning plates 204 are disposed in a non-parallel manner and are used for positioning the upper frame 100, so that all the first reinforcement positioning holes 101 of the upper frame 100 are located right above the corresponding second reinforcement positioning holes 201 of the lower frame 200. The number of the positioning plates 204 is generally two, and two positioning plates 204 are used for positioning two adjacent outer contour surfaces of the upper frame 100. During the use, will be earlier with one of them locating plate of hugging closely of an lateral surface of upper ledge remove (the locating plate sets up the position corresponding to the upper ledge lateral surface on the lower frame), until remove to the upper ledge as to another locating plate, accomplish the quick location between upper ledge and the lower frame promptly, and then realize the quick location installation of prefabricated pier stud. If the cross section of the prefabricated pier stud is rectangular or circular, the two positioning plates are preferably vertically arranged, and if the cross section of the prefabricated pier stud is triangular, polygonal or other shapes, the two positioning plates are arranged at positions corresponding to two adjacent outer side surfaces of the prefabricated pier stud.
In a preferred embodiment of the present invention, as shown in fig. 2, the number of pier stud bolt holes 102 is 2-10 and evenly distributed on the upper frame 100 to achieve even and firm connection of the upper frame with the prefabricated piers.
In the preferred embodiment of the present invention, as shown in fig. 2, the number of the first bolt holes 103 is 2-10 and is uniformly distributed on the upper frame 100 to achieve uniform and firm connection of the upper frame and the lower frame.
In a preferred embodiment of the present invention, as shown in fig. 6, the jig frame structure further includes a plurality of fixing blocks 205, the fixing blocks 205 are disposed at the periphery of the lower frame 200 and are used for fixedly mounting the lower frame 200 in the platform 400 matched with the prefabricated pier 300, and the fixing blocks can be used to simply and rapidly realize the fixed connection between the lower frame and the platform, and finally realize the fixed connection between the prefabricated pier and the platform.
A method for using a jig frame structure for the fast positioning and leveling connection of prefabricated pier stud 300, as shown in fig. 4-10, comprises the following steps:
s1, as shown in fig. 4, inserting all the main reinforcements 303 reserved at the bottom of the prefabricated pier stud 300 into the first reinforcement positioning holes 101 corresponding to the upper frame 100, after the main reinforcements 303 are accepted, pouring the prefabricated pier stud 300, reserving a grouting hole 301 and an exhaust hole 302 for grouting into the jig frame structure at the bottom of the prefabricated pier stud 300 in the pouring process, after the prefabricated pier stud 300 is cured, the upper frame 100 is disassembled, the bottom surface of the prefabricated pier stud 300 contacting with the upper frame 100 is leveled (the uneven position of the bottom of the prefabricated pier stud is chiseled), as shown in fig. 5, the upper frame 100 is fixedly mounted at the bottom of the prefabricated pier stud 300 through the bolt 206 inserted into the pier stud bolt hole 102, the position of the upper frame is checked repeatedly, the upper frame is ensured to be horizontal and parallel to the horizontal section of the prefabricated pier body, then, filling the gap between the main steel bar 303 of the prefabricated pier stud 300 and the first bolt hole 103 with slurry;
s2, as shown in fig. 6, pouring the bearing platform 400, and precisely reserving an installation groove for installing the prefabricated pier stud 300 on the top of the bearing platform 400 through measurement lofting before pouring;
s3, as shown in fig. 6 and 7, after the maintenance of the bearing platform 400 is completed, placing the lower frame 200 in the installation groove to ensure the lower frame is horizontal, and then fixing the lower frame 200 on the bearing platform 400 by using the fixing block 205, as shown in fig. 8, drilling a corresponding reinforcement hole 401 in the bearing platform 400 along the height direction of the bearing platform 400 through the second reinforcement positioning hole 201 of the lower frame 200 by using a drilling device, wherein the depth of the reinforcement hole 401 is slightly greater than the length of the main reinforcement 303 reserved at the bottom of the prefabricated pier stud 300, as shown in fig. 9, grouting into the reinforcement hole 401;
s4, as shown in fig. 10, before the slurry in the reinforcement holes 401 is initially set, hoisting the prefabricated pier stud 300 with the upper frame 100 to the upper side of the lower frame 200, so that all the first reinforcement positioning holes 101 of the upper frame 100 are located right above the second reinforcement positioning holes 201 of the lower frame 200 corresponding thereto, then slowly dropping the prefabricated pier stud 300, so that all the main reinforcements 303 thereof are inserted into the reinforcement holes 401 through the second reinforcement positioning holes 201 of the lower frame 200, and the upper frame 100 and the lower frame 200 are tightly attached to each other, and then fixing the upper frame 100 and the lower frame 200 into a whole by the bolts 206 inserted through the first bolt holes 103 and the second bolt holes 202;
s5, as shown in fig. 10, grouting into the hollow channels of the upper frame 100 and the lower frame 200 through the grouting holes 301 reserved at the bottom of the prefabricated pier stud 300, then grouting into the mounting grooves reserved at the top of the platform 400 (epoxy resin can be poured), and completing the mounting of the prefabricated pier stud 300 after the maintenance is completed.
In a preferred embodiment of the present invention, as shown in fig. 9 and 10, when the adopted jig frame structure includes the positioning plate, the step S4 further includes: before the prefabricated pier stud 300 is hoisted, the positioning plates 204 are arranged in the corresponding positioning grooves 203 of the lower frame 200, then the prefabricated pier stud 300 with the upper frame 100 is hoisted to the upper side of the lower frame 200 before the slurry in the steel bar holes 401 is initially set, one side surface of the upper frame 100 is enabled to be tightly attached to one positioning plate 204 and move until the other side surfaces of the upper frame 100 are contacted with other positioning plates 204, all the first steel bar positioning holes 101 of the upper frame 100 are located right above the corresponding second steel bar positioning holes 201 of the lower frame 200, and all the positioning plates 204 are detached after the upper frame and the lower frame are connected through bolts.
In a preferred embodiment of the present invention, as shown in fig. 10, step S4 further includes: after the upper frame 100 and the frame are fixed by bolts, the upper frame 100 and the lower frame 200 are welded into a whole by electric welding.
The jig frame structure provided by the invention comprises an upper frame, a lower frame, a positioning plate and a fixing block, wherein the upper frame, the lower frame and the positioning plate are all made of steel materials with high rigidity and are arranged in a factory for processing and manufacturing according to the shape and size of a prefabricated pier stud and main steel bars. For example, when the cross section of the prefabricated pier stud is rectangular, the upper frame is composed of 4 long strip-shaped steel bodies, the width of each steel body is 10cm, the thickness of each steel body is 5cm, the length of each long strip-shaped steel body forming the upper frame is finely machined according to the sectional size and the arrangement of main reinforcements of the prefabricated pier stud, the center of a first reinforcement positioning hole formed in the upper frame is aligned with the center of each main reinforcement reserved in the prefabricated pier stud, the diameter of each main reinforcement positioning hole is slightly larger than the diameter of each main reinforcement, and bolt holes for fixedly connecting the prefabricated pier stud and the lower frame are further formed in the upper frame. The lower frame is composed of 4 long strip-shaped steel bodies, the width of each steel body is 20cm, the thickness of each steel body is 5cm, the overall dimension of the lower frame is larger than that of the upper frame, and the overall displacement of the profile of the upper frame to the outside can be 5cm to serve as the profile of the lower frame. The upper frame and the lower frame can be horizontally tightly attached, fixed and assembled together, and can be fixedly connected with the prefabricated pier stud and the bearing platform respectively.
The invention can be used for binding and pouring the steel bars of the prefabricated pier stud in a prefabrication factory.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. A bed-jig structure for the quick positioning and leveling connection of prefabricated pier stud is characterized by comprising an upper frame (100) and a lower frame (200); wherein,
the upper frame (100) is of a hollow closed frame structure, the outer side surface of the prefabricated pier stud (300) does not exceed the outer side surface of the upper frame (100), a first steel bar positioning hole (101) which is consistent with the number of main steel bars (303) of the prefabricated pier stud (300) and can be used for the main steel bars (303) to pass through is arranged on the upper frame (100), a plurality of pier stud bolt holes (102) and a plurality of first bolt holes (103) are further arranged on the upper frame (100), the pier stud bolt holes (102) are used for being fixedly connected with the prefabricated pier stud (300), and the first bolt holes (103) are used for being fixedly connected with the lower frame (200);
the lower frame (200) is of a hollow closed frame structure, the outer side surface of the upper frame (100) is located inside the outer side surface of the lower frame (200), second steel bar positioning holes (201) which correspond to the first steel bar positioning holes (101) one by one are formed in the lower frame (200), and second bolt holes (202) which correspond to the first bolt holes (103) one by one are formed in the lower frame (200).
2. The jig frame structure for the rapid positioning and leveling connection of the prefabricated pier stud according to claim 1, wherein the jig frame structure further comprises at least two positioning plates (204), the lower frame (200) is provided with positioning grooves (203) for installing the positioning plates (204), and the at least two positioning plates (204) are arranged in a non-parallel manner and are used for positioning the upper frame (100) so that all the first reinforcement positioning holes (101) of the upper frame (100) are located right above the second reinforcement positioning holes (201) of the lower frame (200) corresponding to the first reinforcement positioning holes.
3. The jig frame structure for prefabricating the pier stud fast positioning and leveling connection according to claim 2, wherein the number of the positioning plates (204) is two, and two positioning plates (204) are used for positioning two adjacent outer contour surfaces of the upper frame (100).
4. The jig frame structure for prefabricating the pier stud quick positioning and leveling connection according to claim 1, wherein the number of pier stud bolt holes (102) is 2-10 and the pier stud bolt holes are uniformly distributed on the upper frame (100).
5. The jig frame structure for prefabricating the pier stud fast positioning and leveling connection according to claim 1, wherein the number of the first bolt holes (103) is 2-10 and the first bolt holes are evenly distributed on the upper frame (100).
6. The jig frame structure for prefabricated pier stud quick positioning and leveling connection according to claim 1, further comprising a plurality of fixing blocks (205), wherein the fixing blocks (205) are disposed at the outer periphery of the lower frame (200) and are used for fixedly mounting the lower frame (200) in a bearing platform (400) matched with the prefabricated pier stud (300).
7. Use of a jig frame structure for the quick positioning and leveling connection of prefabricated pier stud according to any one of claims 1 to 6, characterized in that it comprises the following steps:
s1, all main reinforcing steel bars (303) reserved at the bottom of the prefabricated pier stud (300) are inserted into a first reinforcing steel bar positioning hole (101) corresponding to the upper frame (100), pouring of the prefabricated pier stud (300) is carried out after the main reinforcing steel bars (303) are accepted and qualified, a grouting hole (301) and an exhaust hole (302) for grouting into a jig structure are reserved at the bottom of the prefabricated pier stud (300) in the pouring process, after the prefabricated pier stud (300) is cured, the upper frame (100) is detached, the bottom surface, in contact with the prefabricated pier stud (300) and the upper frame (100), of the upper frame (100) is fixedly installed at the bottom of the prefabricated pier stud (300) through bolts penetrating through pier stud bolt holes (102), and then gaps between the main reinforcing steel bars (303) and first bolt holes (103) of the prefabricated pier stud (300) are filled with slurry;
s2, pouring a bearing platform (400), and reserving an installation groove for installing the prefabricated pier stud (300) at the top of the bearing platform (400) before pouring;
s3, after the maintenance of the bearing platform (400) is finished, placing the lower frame (200) in the installation groove, fixedly installing the lower frame (200) on the bearing platform (400), drilling a corresponding reinforcing steel bar hole (401) in the bearing platform (400) along the height direction of the bearing platform (400) through a second reinforcing steel bar positioning hole (201) of the lower frame (200), wherein the depth of the reinforcing steel bar hole (401) is greater than the length of a main reinforcing steel bar (303) reserved at the bottom of the prefabricated pier stud (300), and grouting into the reinforcing steel bar hole (401);
s4, before the slurry in the reinforcement holes (401) is initially set, hoisting the prefabricated pier stud (300) with the upper frame (100) to the upper side of the lower frame (200), enabling all the first reinforcement positioning holes (101) of the upper frame (100) to be located right above the second reinforcement positioning holes (201) of the lower frame (200) corresponding to the first reinforcement positioning holes, then inserting all the main reinforcements (303) of the prefabricated pier stud (300) into the reinforcement holes (401) through the second reinforcement positioning holes (201) corresponding to the lower frame (200), enabling the upper frame (100) and the lower frame (200) to be tightly attached, and fixing the upper frame (100) and the lower frame (200) into a whole through bolts penetrating through the first bolt holes (103) and the second bolt holes (202);
s5, grouting into the hollow channels of the upper frame (100) and the lower frame (200) through grouting holes (301) reserved at the bottom of the prefabricated pier stud (300), then grouting into mounting grooves reserved at the top of the bearing platform (400), and completing the mounting of the prefabricated pier stud (300) after maintenance is completed.
8. The method for using the jig frame structure for prefabricating the pier stud fast-positioning leveling connection according to claim 7, wherein when the jig frame structure according to claim 2 or 3 is adopted, the step S4 further comprises: before the prefabricated pier stud (300) is hoisted, the positioning plates (204) are installed in the positioning grooves (203) corresponding to the lower frame (200), then before slurry in the steel bar holes (401) is initially set, the prefabricated pier stud (300) with the upper frame (100) is hoisted to the upper side of the lower frame (200), one side face of the upper frame (100) is enabled to be tightly attached to one positioning plate (204) to move until the other side faces of the upper frame (100) are contacted with other positioning plates (204), all first steel bar positioning holes (101) of the upper frame (100) are located right above the second steel bar positioning holes (201) of the lower frame (200) corresponding to the first steel bar positioning holes, and all the positioning plates (204) are removed after the upper frame (100) and the lower frame (200) are connected through bolts.
9. The use method of the jig frame structure for prefabricating the pier stud fast positioning leveling connection according to claim 7, wherein the step S4 further comprises: and then the upper frame (100) and the lower frame (200) are welded into a whole by adopting electric welding after the upper frame (100) and the frames are fixed by adopting bolts.
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Application publication date: 20190920 |