CN212103640U - Steel bar sleeve connecting structure and segment prefabricated assembly type pier adopting same - Google Patents
Steel bar sleeve connecting structure and segment prefabricated assembly type pier adopting same Download PDFInfo
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- CN212103640U CN212103640U CN202020059352.5U CN202020059352U CN212103640U CN 212103640 U CN212103640 U CN 212103640U CN 202020059352 U CN202020059352 U CN 202020059352U CN 212103640 U CN212103640 U CN 212103640U
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Abstract
The utility model provides a steel sleeve connecting structure and adopt prefabricated pin-connected panel pier of festival section of this structure, steel sleeve connecting structure include basis, end festival section, end seam steel sleeve, basic reservation pore, end festival section steel sleeve etc.. When the foundation is constructed, bottom joint reinforcing steel sleeves or reserved holes are pre-embedded at positions corresponding to reinforcing steel bars, bottom joint reinforcing steel sleeves are pre-embedded at positions corresponding to the reinforcing steel bars when bottom sections are prefabricated, when the bottom sections are spliced with the foundation, the bottom joint reinforcing steel sleeves are sleeved on the bottom joint reinforcing steel sleeves one by one or one of the bottom joint reinforcing steel sleeves penetrates into the foundation reserved holes, reinforcing steel bars penetrate into the bottom joint reinforcing steel sleeves and the bottom joint reinforcing steel sleeves or the reserved holes, and then grouting is performed to form the reinforcing steel bar sleeve connecting structure. The structure obviously improves the stress of the bottom seam and the bottom section, so that the structural arrangement and the stress requirement of the bottom seam and the bottom section are mutually matched, and the structure is suitable for the seismic requirement of a middle-high seismic region; the method can adapt to non-matching installation between the prefabricated sections and the foundation, is low in cost, and meets the engineering application requirements.
Description
Technical Field
The utility model relates to a bridge structures building technical field especially relates to a steel sleeve connecting structure and adopt prefabricated pin-connected panel pier of festival section of this structure.
Background
In recent years, fabricated buildings have become a research hotspot in the engineering field, wherein the bridge structures are large in scale and quantity, the prefabricated and fabricated construction technology is a research focus area, and the bridge piers are one of the main structures of the bridge structures, and the safety and durability of the bridge piers are related to the reliability and the service life of the whole bridge.
The segment prefabricated assembled pier is formed by mutually splicing prefabricated segments and foundations and a plurality of prefabricated segments, splicing seams at different positions exist, the splicing seams are key positions of an overall structure, the splicing seams are generally considered to be influenced by construction and construction quality, and the strength of the splicing seams is weaker than that of the prefabricated segments. Therefore, special attention needs to be paid to the stress of the splicing seams, so that the connection strength and the construction quality of the splicing seams meet the requirements of integral performance and structural safety of the bridge pier.
The segment prefabricated assembly type bridge pier has two types of splicing seams, one type is a seam between a prefabricated segment and a foundation, namely a bottom seam, and the other type is a seam between prefabricated segments, namely a middle seam (the middle seam refers to a splicing structure between a middle segment and a bottom segment prefabricated in a factory, and is installed in a matching mode, and epoxy resin glue is generally adopted). The bottom joints are spliced between the prefabricated sections and the foundation, the prefabricated sections are manufactured in a factory, the foundation needs to be constructed at a bridge position, matching installation cannot be realized between the prefabricated sections and the foundation, the splicing joints need large tolerance, almost all the bottom joints adopt mortar cushion layers, and in order to improve the combination degree of the bottom joints and the foundation, the bottom surfaces of the prefabricated sections and the top surface of the foundation can be roughened; the intermediate joint is the concatenation between the prefabricated segment, the prefabricated segment is all made in the mill and is accomplished, adopt the stub method preparation more, the top template of below segment is as the die block board of top segment, for matching the installation between the two, the preparation technology in the mill has guaranteed that the assembly of higher accuracy can be realized between the intermediate joint, the intermediate joint generally adopts epoxy glue to connect more, be equipped with concave-convex type shear force key on the seam, rely on concave-convex key interlock each other to form the concrete shear force key, play the shearing effect between the segment, prevent to assemble the shearing destruction such as dislocation, slide between the segment. The main disadvantages of current seam construction are as follows:
1. the bottom joint is installed in a non-matching mode, concave-convex shear keys cannot be arranged, no shear key teeth pass through the joint, and the shear strength of the joint is reduced.
2. The bottom joint shearing resistant structure is not consistent with the actual shearing resistant requirement, the stress of the bottom joint is larger than that of the middle joint, the shearing resistant structure of the joint surface is weaker than that of the middle joint due to the limitation of manufacturing and installation, and the structure setting is not matched with the actual stress.
3. When the prefabricated assembly pier is applied to a high-seismic region, the stress requirements on bottom seams and bottom sections are high, and the strength and the energy consumption capacity of the prefabricated assembly pier are improved as much as possible on the premise that the manufacturing requirements are met structurally, so that the section prefabricated assembly pier is suitable for the seismic requirements of the high-seismic region.
Aiming at the defects of the joint structure of the existing common segment prefabricated assembled pier, the research and development of a steel sleeve connecting structure and the segment prefabricated assembled pier adopting the structure are problems to be solved urgently.
Disclosure of Invention
In view of this, the utility model aims at providing a steel sleeve connecting structure and adopt the segmental prefabrication pin-connected panel pier of this structure, this connecting structure has shown the atress that improves bottom seam and bottom segmental segment, makes bottom seam and bottom segmental structure setting and atress demand match each other, and is more reasonable, applicable in the well earthquake district antidetonation demand; meanwhile, the structure is simple in construction and large in tolerance, and can adapt to non-matching installation between the prefabricated sections and the foundation, and the problem of the existing pier assembled by prefabricating the sections is effectively solved.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a prefabricated pin-connected panel pier steel reinforcement sleeve pipe connection structure of festival section, includes the base connecting device who sets up in cast-in-place basis in the scene and the end festival section connecting device who sets up at prefabricated end festival section of mill, the concatenation is realized through mutually supporting of base connecting device and end festival section connecting device to the basis and end festival section.
Preferably, foundation connection device arranges according to the reinforcing bar when foundation construction, corresponds a plurality of end joint steel sleeve pipes that the position is pre-buried in the basis, end joint steel sleeve pipe stretches out the basis top surface, end joint section connecting device is when prefabricating end section in the mill, corresponds a plurality of end section steel sleeve pipes that the position is pre-buried in end section, end joint section steel sleeve pipe's diameter is greater than end joint steel sleeve pipe's diameter, end joint steel sleeve pipe and end section steel sleeve pipe one-to-one set up, during end section and the concatenation of basis, entangles end joint steel sleeve pipe with end section steel sleeve pipe one-to-one, runs through a logical long reinforcing bar in end section steel sleeve pipe and end joint steel sleeve pipe that each correspondence set up after the concatenation is accomplished, pours into the grout material that excels in again, forms steel sleeve pipe connection structure.
Furthermore, the bottom seam steel bar sleeve is a round steel pipe sleeved on a common steel bar and can be processed by adopting a seamless steel pipe or steel.
Furthermore, the bottom section steel sleeve is a round steel pipe sleeved on a common steel bar and is embedded in the whole bottom section, the length of the bottom section steel sleeve is flush with the bottom surface of the bottom section or extends out of the bottom surface of the bottom section, and the bottom section steel sleeve can be processed by adopting a seamless steel pipe or steel.
A section prefabricated assembly type pier adopting the reinforced sleeve connecting structure comprises a foundation cast in place on site, a bottom section and a middle section prefabricated in a factory, wherein a plurality of corrugated pipes are embedded in the middle section, the bottom joint reinforced sleeves, the bottom section reinforced sleeves and the corrugated pipes are arranged in a one-to-one correspondence mode, shear keys are arranged on the adjacent end surfaces of the bottom section and the middle section and the adjacent end surfaces between the middle sections, the foundation and the bottom section are spliced through high-strength mortar, the bottom section and the middle section and different middle sections are spliced through epoxy resin glue, when the foundation and the bottom section are spliced, because the bottom joint reinforced sleeves extend out of the top surface of the foundation, the bottom joint reinforced sleeves are sleeved on the bottom joint reinforced sleeves one by one, and after splicing is completed between the foundation and the bottom section, between the bottom section and the middle section and between different middle sections, run through a logical long reinforcing bar in bottom seam steel sleeve pipe, bottom segment steel sleeve pipe and the bellows that each corresponds the setting, lead to long reinforcing bar and be located bottom seam steel sleeve pipe, bottom segment steel sleeve pipe, bellows center, pour into high-strength grout material and grout material again, form whole pin-connected panel pier.
Furthermore, a foundation grouting pipe is pre-buried during foundation construction, one end of the foundation grouting pipe is connected with the bottom joint reinforcing steel sleeve, and the other end of the foundation grouting pipe extends out of the foundation; the bottom section is provided with a bottom section grout outlet pipe and a bottom section grout pressing pipe when being prefabricated, one end of the bottom section grout outlet pipe and one end of the bottom section grout pressing pipe are connected with the bottom section steel bar sleeve, the other end of the bottom section grout outlet pipe extends out of the bottom section, the bottom section grout outlet pipe and the bottom section grout pressing pipe are located above the bottom seam steel bar sleeve, and the position of the bottom section grout pressing pipe is higher than that of the bottom section grout outlet pipe.
Preferably, foundation connection device is according to the reinforcing bar arrangement during basic construction, a plurality of steel casing pipe pore that the corresponding position was reserved in the basis, end section connecting device is when prefabricated end section in the mill, corresponds a plurality of end seam steel casing pipes that the position is pre-buried in end section, end seam steel casing pipe stretches out outside end section, steel casing pipe pore and end seam steel casing pipe one-to-one set up, will end seam steel casing pipe penetrates in the steel casing pipe pore one-to-one, runs through a logical long reinforcing bar in end seam steel casing pipe and the steel casing pipe pore that each corresponds the setting, pours into the grout that excels in again, forms steel casing pipe connection structure.
The section prefabricated assembly type pier adopting the steel bar casing connecting structure comprises a foundation cast in site, a bottom section and a middle section, wherein the bottom section and the middle section are prefabricated in a factory, a plurality of corrugated pipes are embedded in the middle section, bottom joint steel bar casings, steel bar casing channels and the corrugated pipes are arranged in a one-to-one correspondence mode, shear keys are arranged on the adjacent end faces of the bottom section and the middle section and the adjacent end faces between the middle sections, the foundation and the bottom section are spliced through high-strength mortar, the bottom section and the middle section and different middle sections are spliced through epoxy resin glue, when the bottom section and the foundation are spliced, the bottom joint steel bar casings are inserted into the reserved steel bar casing channels in a one-to-one correspondence mode, and after the splicing between the foundation and the bottom section, between the bottom section and the middle section and between different middle sections is completed, the steel bar casing channels arranged in each correspondence mode are arranged, Run through a logical long reinforcing bar in end seam steel sleeve and the bellows, lead to long reinforcing bar and be located steel sleeve pore, end seam steel sleeve and bellows center, the grout material and the mudjacking that excel in of reperfusion forms whole pin-connected panel pier.
Furthermore, pre-buried basis mud jacking pipe during basic construction, the reservation steel casing pipe pore is connected to basis mud jacking pipe one end, and the other end stretches out outside the basis bottom segment section play thick liquid pipe and bottom segment mud jacking pipe set up when prefabricating, bottom segment play thick liquid pipe and bottom segment mud jacking pipe one end link to each other with bottom segment steel casing pipe, and the other end stretches out outside the bottom segment section, bottom segment play thick liquid pipe and bottom segment mud jacking pipe are located bottom seam steel casing pipe top, and the position of bottom segment mud jacking pipe is higher than bottom segment play thick liquid pipe.
Compared with the prior art, steel bar sleeve connecting structure and the segment prefabricated assembled pier adopting the structure have the following advantages:
(1) aiming at the problems that the existing assembled pier bottom section and foundation are installed in a non-matching mode, and a shear key cannot be arranged, so that no shear key tooth passes through a bottom joint, and the shear strength of the bottom joint is reduced, the invention adopts a steel bar sleeve connecting structure penetrating through the bottom joint, and utilizes the shear resistance provided by filling high-strength grouting material, common steel bars and the like in a steel pipe and the steel pipe, so that the shear resistance of the bottom joint is obviously improved.
(2) The reinforcing steel bar sleeve connecting structure arranged on the bottom joint forms the stress of a combined structure, the shear mechanism is clear, the strength is stronger than that of the concave-convex concrete shear key teeth which are generally arranged, the shear resistance of the bottom joint is stronger than that of the middle joint, the bottom joint meets the stress requirement of the bottom joint, and the defect that the existing structure and the stress are not matched is avoided.
(3) The section of the prefabricated assembled pier, which is positioned at the bottom of the pier, is a region with the largest stress, and the stress characteristic of the bottom joint is represented as the opening and closing of the joint, the concentrated stress of the steel bar at the tension side and the local pressure bearing of the concrete at the compression region are suitable for causing the structural damage and failure; the bottom segment is positioned in a plastic hinge area of the pier, and the bending resistance and the shearing resistance of the area are enhanced through a steel bar sleeve combined structure, and the energy consumption capability is improved; therefore, the steel bar sleeve connecting structure integrally improves the shock resistance of the spliced pier and is applicable to high-seismic areas.
(4) The steel pipe and the high-strength grouting material filled in the steel pipe form bond wrapping on the steel bar, and the steel pipe hoop function enhances the anchoring on the steel bar, so that the anchoring length of the steel bar is reduced, the anchoring safety is improved, and the reliability of a bottom seam between a bottom section and a foundation is improved.
(5) The steel bar sleeve has a simple structure, larger gaps are reserved between steel bars and steel pipes, the construction tolerance is large, the precision requirement is low, and the construction is convenient; and the cost is low, and the requirements of engineering application can be met.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a front view of a first embodiment of the present invention;
fig. 2 is a top view of a first embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIGS. 1 and 2;
fig. 4 is a front view of the second embodiment of the present invention.
Description of reference numerals:
1. a foundation; 2. a bottom segment; 3. an intermediate section; 4. a steel bar sleeve is jointed at the bottom; 41. a bottom section steel casing; 42. a steel bar sleeve pore channel; 5. a bellows; 6. a shear key; 7. passing through long steel bars; 81. a base grouting pipe; 82. a bottom section slurry outlet pipe; 83. a bottom segment mud jacking pipe; 91. high-strength grouting material; 92. pressing the slurry; 101. high-strength mortar; 102. epoxy resin glue.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being 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. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1:
as shown in fig. 1-2, a section prefabricated assembly type pier steel sleeve connection structure includes:
during foundation construction, according to the arrangement of steel bars, a plurality of bottom joint steel bar sleeves 4 are pre-embedded in corresponding positions in a foundation 1, and the bottom joint steel bar sleeves 4 extend out of the top surface of the foundation 1, so that the bottom joint steel bar sleeves 4 pass through bottom joints (the bottom joints refer to splicing structures between foundations cast in situ on site and bottom sections prefabricated in a factory and generally adopt high-strength mortar);
when prefabricating end section 2 in the mill, correspond a plurality of end section bar sleeve 41 that the position is pre-buried in end section 2, end section bar sleeve 41 length and end section bottom surface parallel and level or stretch out end section bottom surface certain length, end section bar sleeve 41's diameter is greater than end seam bar sleeve 4's diameter.
The bottom joint reinforcing sleeve 4 and the bottom section reinforcing sleeve 41 are arranged in a one-to-one correspondence mode, when the bottom section 2 and the foundation 1 are spliced, the bottom joint reinforcing sleeve 4 is sleeved with the bottom section reinforcing sleeve 41 one by one, a through long reinforcing steel bar 7 penetrates through the bottom section reinforcing sleeve 41 and the bottom joint reinforcing sleeve 4 which are arranged in a corresponding mode after splicing is completed, high-strength grouting material 91 is poured again, and a reinforcing sleeve connecting structure is formed. The structure forms a combined shear-resistant structure at the splicing seam, and the shear resistance of the seam is improved.
A segment prefabricated assembly type bridge pier adopting the steel sleeve connecting structure comprises a foundation 1 cast in situ on site, a bottom segment 2 and an intermediate segment 3 prefabricated in a factory, a plurality of corrugated pipes 5 are pre-embedded in the intermediate segment 3, bottom joint steel sleeve pipes 4, bottom segment steel sleeve pipes 41 and the corrugated pipes 5 are arranged in a one-to-one correspondence mode, shear keys 6 are arranged on the adjacent end faces of the bottom segment 2 and the intermediate segment 3 and the adjacent end faces between the intermediate segments 3, the foundation 1 and the bottom segment 2 are spliced through high-strength mortar 101, the bottom segment 2 and the intermediate segment 3 and different intermediate segments 3 are spliced through epoxy resin glue 102, when the foundation 1 and the bottom segment 2 are spliced, because the bottom joint steel sleeve pipes 4 extend out of the top face of the foundation 1, the bottom joint steel sleeve pipes 41 are sleeved on the bottom joint steel sleeve pipes 4 one by one, the foundation 1 and the bottom segment 2, the bottom segment 2 and the intermediate segment 3 and different intermediate segments 3 are spliced, and a through long steel bar 7 penetrates through the bottom joint steel bar sleeve 4, the bottom section steel bar sleeve 41 and the corrugated pipe 5 which are correspondingly arranged, the through long steel bar 7 is positioned at the centers of the bottom joint steel bar sleeve 4, the bottom section steel bar sleeve 41 and the corrugated pipe 5, and then high-strength grouting material 91 and grouting material 92 are poured to form the integral spliced pier.
As shown in fig. 3, a foundation grouting pipe 81 is pre-buried during foundation 1 construction, one end of the foundation grouting pipe 81 is connected with the bottom joint reinforcing steel sleeve 4, and the other end extends out of the outside of the foundation 1; the bottom section 2 is provided with a bottom section grout outlet pipe 82 and a bottom section grout pressing pipe 83 during prefabrication, one end of the bottom section grout outlet pipe 82 and one end of the bottom section grout pressing pipe 83 are connected with the bottom section steel bar sleeve 41, the other end of the bottom section grout outlet pipe extends out of the bottom section 2, the bottom section grout outlet pipe 82 and the bottom section grout pressing pipe 83 are located above the bottom seam steel bar sleeve 4, and the position of the bottom section grout pressing pipe 83 is higher than that of the bottom section grout outlet pipe 82. After the foundation 1, the bottom section 2, the middle section 3 and the like are assembled, the through-length steel bars 7 penetrate into the foundation 1, the bottom section 2, the middle section 3 and the like, and are guaranteed to be positioned in the centers of the bottom joint steel bar sleeve 4, the bottom section steel bar sleeve 41 and the corrugated pipe 5.
A construction method for a segment prefabricated assembly type pier adopting the steel sleeve connecting structure comprises the following steps:
the method comprises the following steps: constructing a foundation 1, namely pre-burying a bottom joint reinforcing steel bar sleeve 4 in the foundation 1 at a position corresponding to a reinforcing steel bar, wherein the bottom joint reinforcing steel bar sleeve 4 is pre-buried in the foundation 1 and extends out of the top surface of the foundation 1 for a certain distance, so that the bottom joint reinforcing steel bar sleeve 4 passes through a bottom joint to ensure the shear resistant effect of the bottom joint reinforcing steel bar sleeve, a foundation grouting pipe 81 is arranged on one side of the bottom joint reinforcing steel bar sleeve 4, and the other end of the foundation grouting pipe 81 extends out of the foundation 1 for a certain distance;
step two: prefabricating a bottom section 2 in a factory, embedding a bottom section steel bar sleeve 41, wherein the bottom section steel bar sleeve 41 and a bottom joint steel bar sleeve 4 are arranged in a one-to-one correspondence manner, and the diameter of the embedded bottom section steel bar sleeve 41 is larger than that of the bottom joint steel bar sleeve 4 so as to be convenient for sleeving the bottom joint steel bar sleeve 4;
step three: prefabricating a middle section 3 in a factory, embedding corrugated pipes 5 in the middle section 3, wherein the corrugated pipes 5 correspond to the section steel bar sleeves 41 and the bottom joint steel bar sleeves 4 one by one, so that the through-length steel bars 7 can conveniently penetrate through the corrugated pipes;
step four: splicing the bottom sections 2 and the foundation 1, connecting the bottom sections with the foundation 1 through high-strength mortar 101, constructing by a mortar sitting method, and sleeving the bottom joint reinforcing steel bar sleeves 4 with the bottom section reinforcing steel bar sleeves 41 one by one;
step five: splicing the middle section 3 and the bottom section 2, connecting the two through epoxy resin glue 102, performing glue extrusion construction, and enabling the middle section corrugated pipe 5 and the bottom section steel bar sleeve 41 to correspond one to one; assembling other intermediate sections in the same manner;
step six: sequentially penetrating a full-length steel bar 7 into a corrugated pipe 5, a bottom section steel bar sleeve 41 and a bottom joint steel bar sleeve 4, wherein the full-length steel bar is positioned in the center of a pipeline, so that the full-length penetration of common steel bars among a middle section 3, a bottom section 2 and a foundation 1 is realized;
step seven: grouting high-strength grouting material 91 into the bottom joint reinforcing steel bar sleeve 4 and part of the bottom section reinforcing steel bar sleeve 41 one by one from the foundation grouting pipe 81, and finishing grouting when the high-strength grouting material 91 flows out of the bottom section grout outlet pipe 82; cutting off the grouting pipes of all the exposed parts of the structures;
step eight: grouting 92 into part of the bottom-segment steel bar sleeve 41 and the corrugated pipe 5 one by one from the bottom-segment grouting pipe 83, and finishing grouting when the grouting 92 flows out of the top of the corrugated pipe 5; cutting off the grouting pipes of all the exposed parts of the structures;
step nine: and maintaining the slurry to realize the construction of the steel bar sleeve connection structure and complete the assembly of pier segments.
Example 2:
as shown in fig. 4, a prefabricated pin-connected panel pier steel casing connection structure of segment includes:
a plurality of steel bar casing pore canals 42 are reserved at corresponding positions in the foundation 1 according to the arrangement of steel bars during foundation construction;
when prefabricated end section 2 in the mill, correspond a plurality of end seam steel sleeve 4 that the position is pre-buried in end section 2, end seam steel sleeve 4 stretches out end section 2 certain length, makes end seam steel sleeve 4 pass through end seam.
The steel bar casing hole 42 and the bottom joint steel bar casing 4 are arranged in a one-to-one correspondence mode, the bottom joint steel bar casing 4 penetrates into the steel bar casing hole 42 one by one, a through long steel bar 7 penetrates into each bottom joint steel bar casing 4 and the steel bar casing hole 42 which are arranged correspondingly, and then high-strength grouting material 91 is poured to form a steel bar casing connection structure. The structure forms a combined shear-resistant structure at the splicing seam, and the shear resistance of the seam is improved.
As shown in fig. 4, a segment prefabricated assembled pier adopting the steel sleeve connection structure comprises a foundation 1 cast in situ on site, a bottom segment 2 and a middle segment 3 prefabricated in a factory, a plurality of corrugated pipes 5 pre-embedded in the middle segment 3, bottom joint steel sleeve 4, steel sleeve channels 42 and the corrugated pipes 5 arranged in a one-to-one correspondence manner, shear keys 6 are arranged on the adjacent end surfaces of the bottom segment 2 and the middle segment 3 and the adjacent end surfaces between the middle segments 3, the foundation 1 and the bottom segment 2 are spliced by high-strength mortar 101, the bottom segment 2 and the middle segment 3 and different middle segments 3 are spliced by epoxy resin glue 102, when the bottom segment 2 is spliced with the foundation 1, the bottom joint steel sleeve 4 correspondingly penetrates into the reserved steel sleeve channels 42, the foundation 1 and the bottom segment 2, the bottom segment 2 and the middle segment 3 and different middle segments 3 are spliced, run through a logical long reinforcing bar 7 in each steel casing pore 42, end seam steel casing 4 and the bellows 5 that corresponds the setting, lead to long reinforcing bar 7 and be located steel casing pore 42, end seam steel casing 4 and the 5 centers of bellows, pour into high strength grout material 91 and pressure slurry material 92 again, form whole pin-connected panel pier.
As shown in fig. 4, a foundation grouting pipe 81 is pre-buried during foundation 1 construction, one end of the foundation grouting pipe 81 is connected with the reserved steel casing pipe hole 42, the other end of the foundation grouting pipe extends out of the foundation 1, a bottom section grout outlet pipe 82 and a bottom section grouting pipe 83 are arranged during bottom section 2 prefabrication, one end of the bottom section grout outlet pipe 82 and one end of the bottom section grouting pipe 83 are connected with the bottom section steel casing pipe 41, the other end of the bottom section grout outlet pipe extends out of the bottom section 2, the bottom section grout outlet pipe 82 and the bottom section grouting pipe 83 are located above the bottom seam steel casing pipe 4, and the bottom section grouting pipe 83 is higher than the bottom section grout outlet pipe 82.
A construction method for a segment prefabricated assembly type pier adopting the steel sleeve connecting structure comprises the following steps:
the method comprises the following steps: constructing a foundation 1, reserving a steel bar sleeve hole 42 in the foundation 1 corresponding to the position of a steel bar, arranging a foundation grouting pipe 81 on one side of the steel bar sleeve hole 42, and extending the other end of the foundation grouting pipe 81 out of the foundation 1 for a certain distance so as to facilitate grouting;
step two: prefabricating a bottom section 2 in a factory, embedding a bottom joint reinforcing steel bar sleeve 4, embedding the bottom joint reinforcing steel bar sleeve 4 in the whole bottom section 2, extending out of the bottom section 2 for a certain length to ensure that the bottom joint reinforcing steel bar sleeve passes through the bottom joint, wherein the bottom joint reinforcing steel bar sleeve 4 corresponds to a reinforcing steel bar sleeve hole 42 reserved in the foundation 1 one by one, and the diameter of the reinforcing steel bar sleeve hole 42 is larger than that of the bottom joint reinforcing steel bar sleeve 4, so that the bottom joint reinforcing steel bar sleeve 4 can conveniently penetrate into the reinforcing steel bar sleeve hole 42;
step three: prefabricating a middle section 3 in a factory, embedding corrugated pipes 5 in the middle section 3, wherein the corrugated pipes 5 and bottom joint reinforcing steel bar sleeves 4 are arranged in a one-to-one correspondence manner, so that through reinforcing steel bars 7 can conveniently penetrate through the corrugated pipes 5 and the bottom joint reinforcing steel bar sleeves 4;
step four: splicing the bottom section 2 and the foundation 1, connecting the two through high-strength mortar 101, constructing by a mortar sitting method, and penetrating the bottom joint reinforcing steel bar sleeve 4 into a reinforcing steel bar sleeve hole 42 in the foundation 1 to ensure that the bottom joint reinforcing steel bar sleeve 4 passes through the bottom joint and extends into the foundation 1 for a certain distance;
step five: splicing the middle section 3 and the bottom section 2, connecting the two through epoxy resin glue 102, performing glue extrusion construction, and enabling the middle section corrugated pipe 5 and the bottom section steel bar sleeve 41 to correspond one to one; assembling other intermediate sections in the same manner;
step six: sequentially penetrating a full-length steel bar 7 into the corrugated pipe 5 and the bottom joint steel bar sleeve 4, wherein the steel bar 7 is usually positioned in the center of a pipeline, so that the full-length penetration of common steel bars among the middle section 3, the bottom section 2 and the foundation 1 is realized;
step seven: grouting high-strength grouting material 91 into the steel bar casing hole 42 and part of the bottom joint steel bar casing 4 one by one from the foundation grouting pipe 81, and finishing grouting when the high-strength grouting material 91 flows out of the bottom section grout outlet pipe 82; cutting off the grouting pipes of all the exposed parts of the structures;
step eight: grouting 92 into the steel bar sleeve 4 and the corrugated pipe 5 with partial bottom joint from the bottom segment grouting pipe 83 one by one, and finishing grouting when the grouting 92 flows out of the top of the corrugated pipe 5; cutting off the grouting pipes of all the exposed parts of the structures;
step nine: and maintaining the slurry to realize the construction of the steel bar sleeve connection structure and complete the assembly of pier segments.
In the embodiments 1 and 2, the bottom seam steel sleeve 4 is a circular steel pipe which is sleeved on the common steel bar at the position corresponding to the common steel bar and can be processed by adopting a seamless steel pipe form or steel. The bottom joint rebar sleeve needs to pass through the bottom joint to enhance the shear resistance of the bottom joint. The bottom joint reinforcing steel bar sleeve 4 can be in the form of a short steel tube embedded in the foundation or a long steel tube embedded in the bottom section. The bottom section steel bar sleeve 42 is a round steel pipe sleeved on the common steel bars at the position corresponding to the common steel bars, and can be in a seamless steel pipe form, the bottom section steel bar sleeve is embedded in the whole bottom section, and the length of the bottom section steel bar sleeve is parallel to the bottom surface of the bottom section or extends out of the bottom surface of the bottom section by a certain length and is formed by processing the seamless steel pipe or steel. When the bottom joint reinforcing steel bar sleeve adopts a short steel pipe, the diameter of the reinforcing steel bar sleeve corresponding to the bottom section is larger than that of the bottom joint reinforcing steel bar sleeve so as to be convenient for sheathing the bottom joint reinforcing steel bar sleeve. The high-strength mortar 101 refers to a bonding material between a foundation and a bottom section, and the high-strength mortar and the bottom section are installed in a non-matching mode and generally need to be 2-3cm thick. The epoxy resin glue 102 refers to a bonding material between the bottom section and the middle section or between different middle sections, and the bottom section and the middle section or between different middle sections are matched for installation, and generally need to be 2-3mm thick. The shear key fingers are arranged at the middle joint, the concave-convex key teeth on the top surfaces of the lower sections and the bottom surfaces of the upper sections, and the sections on the two sides are manufactured in a factory, so that the mounting accuracy of the shear key fingers can be guaranteed. The through-length steel bars 7 refer to connecting steel bars among the foundation, the bottom section and the middle section. The high-strength grouting material 91 is filled around the steel bars in certain areas of the foundation and the bottom section, and plays a role in anchoring the steel bar sleeve of the bottom section and the full-length steel bars. The corrugated pipe is pre-embedded in the middle section and is used as a reserved hole for the through long steel bar. The grouting material is filled around the steel bars in certain areas of the middle section and the bottom section, and plays a role in anchoring the through long steel bars.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a steel bar sleeve connecting structure which characterized in that: the prefabricated foundation comprises a foundation connecting device arranged in a foundation and a bottom section connecting device arranged in a prefabricated bottom section of a factory, wherein the foundation and the bottom section are spliced through the foundation connecting device and the bottom section connecting device.
2. A reinforcing bar bushing coupling structure according to claim 1, wherein: foundation connecting device is a plurality of end joint steel sleeve pipes of pre-buried in the basis, end joint steel sleeve pipe stretches out basic top surface, end joint section connecting device is a plurality of end joint section steel sleeve pipes of pre-buried in end joint section, end joint section steel sleeve pipe's diameter is greater than end joint section steel sleeve pipe's diameter, end joint section steel sleeve pipe and end joint section steel sleeve pipe one-to-one set up, during end joint section and basic concatenation, end joint section steel sleeve pipe is lived one-to-one with end joint section steel sleeve pipe, runs through a logical long reinforcing bar in end joint section steel sleeve pipe and end joint section steel sleeve pipe that each correspondence set up after the concatenation is accomplished, pours the grout that excels in again, forms steel sleeve pipe connection structure.
3. A reinforcing bar bushing coupling structure according to claim 2, wherein: the bottom joint steel bar sleeve is a round steel pipe sleeved on a steel bar and is formed by processing a seamless steel pipe or steel.
4. A reinforcing bar bushing coupling structure according to claim 2 or 3, wherein: the bottom section steel bar sleeve is a round steel pipe sleeved on a steel bar and is embedded in the whole bottom section, the length of the bottom section steel bar sleeve is flush with the bottom surface of the bottom section, and the bottom section steel bar sleeve is formed by processing seamless steel pipes or steel materials.
5. A segment prefabricated assembly type pier adopting the steel sleeve connecting structure of claim 2, which is characterized in that: the steel bar splicing foundation comprises a foundation cast in situ on site, a bottom section and a middle section which are prefabricated in a factory, a plurality of corrugated pipes are embedded in the middle section, bottom joint steel bar sleeves, the bottom section steel bar sleeves and the corrugated pipes are arranged in a one-to-one correspondence mode, shear keys are arranged on the adjacent end faces of the bottom section and the middle section and the adjacent end faces of the middle section, the foundation and the bottom section are spliced through high-strength mortar, the bottom section and the middle section and different middle sections are spliced through epoxy resin glue, when the foundation and the bottom section are spliced, the bottom section steel bar sleeves are sleeved on the bottom joint steel bar sleeves one by one, after the assembly between the foundation and the bottom section, between the bottom section and the middle section and between different middle sections is completed, a through-length steel bar penetrates through the bottom joint steel bar sleeves, the bottom section steel bar sleeves and the corrugated pipes which are correspondingly arranged, and then high-strength grouting material and grouting material are poured to form the integral spliced pier.
6. The segment prefabricated assembly type pier of the steel sleeve connection structure according to claim 5, wherein: pre-burying a foundation grouting pipe during foundation construction, wherein one end of the foundation grouting pipe is connected with the bottom joint reinforcing steel bar sleeve, and the other end of the foundation grouting pipe extends out of the foundation; and when the bottom section is prefabricated, a bottom section slurry outlet pipe and a bottom section slurry pressing pipe are arranged, one end of the bottom section slurry outlet pipe and one end of the bottom section slurry pressing pipe are connected with the bottom section steel bar sleeve, and the other end of the bottom section slurry outlet pipe and the other end of the bottom section slurry pressing pipe extend out of the bottom section.
7. A reinforcing bar bushing coupling structure according to claim 1, wherein: the utility model discloses a steel reinforcement sleeve pipe, including base connecting device, end joint steel reinforcement sleeve pipe, base joint steel reinforcement sleeve pipe and base joint steel reinforcement sleeve pipe one-to-one set up, will during end joint steel reinforcement sleeve pipe penetrates steel reinforcement sleeve pipe hole one by one, run through a logical long reinforcing bar in the end joint steel reinforcement sleeve pipe that each corresponds the setting and steel reinforcement sleeve pipe hole, the grout that excels in of reperfusion forms steel reinforcement sleeve pipe connection structure.
8. A segment prefabricated assembly type pier adopting the steel sleeve connecting structure of claim 7, wherein: the steel bar sleeve is spliced with the bottom section through high-strength mortar, the bottom section and the middle section and different middle sections are spliced through epoxy resin glue, when the bottom section is spliced with the foundation, the steel bar sleeve at the bottom joint penetrates into the reserved steel bar sleeve hole in a one-to-one correspondence manner, after the assembly between the foundation and the bottom section, the steel bar sleeve at the bottom joint and the middle section and different middle sections is completed, a through length penetrates through the steel bar sleeve hole, the steel bar sleeve at the bottom joint and the corrugated pipe which are correspondingly arranged, and then high-strength grouting material and grouting material are poured to form the integral spliced pier.
9. The segment prefabricated assembly type pier of the steel sleeve connection structure according to claim 8, wherein: the foundation construction method comprises the steps of pre-embedding a foundation grouting pipe during foundation construction, wherein one end of the foundation grouting pipe is connected with a reserved steel sleeve hole, the other end of the foundation grouting pipe extends out of a foundation, a bottom section grouting pipe and a bottom section grouting pipe are arranged during bottom section prefabrication, one end of the bottom section grouting pipe and one end of the bottom section grouting pipe are connected with the bottom section steel sleeve, and the other end of the bottom section grouting pipe extends out of the bottom section.
10. The segment prefabricated assembly type pier of the steel bar casing connection structure according to claim 6 or 9, wherein: the bottom section grout outlet pipe and the bottom section grout pressing pipe are positioned above the bottom joint reinforcing steel bar sleeve, and the bottom section grout pressing pipe is higher than the bottom section grout outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020059352.5U CN212103640U (en) | 2020-01-10 | 2020-01-10 | Steel bar sleeve connecting structure and segment prefabricated assembly type pier adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020059352.5U CN212103640U (en) | 2020-01-10 | 2020-01-10 | Steel bar sleeve connecting structure and segment prefabricated assembly type pier adopting same |
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| CN212103640U true CN212103640U (en) | 2020-12-08 |
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| CN202020059352.5U Active CN212103640U (en) | 2020-01-10 | 2020-01-10 | Steel bar sleeve connecting structure and segment prefabricated assembly type pier adopting same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006373A (en) * | 2021-01-29 | 2021-06-22 | 中铁十六局集团第二工程有限公司 | Segmental beam additionally provided with steel pipe and horizontally distributed steel bars |
| CN113106848A (en) * | 2020-01-10 | 2021-07-13 | 中国国家铁路集团有限公司 | Steel bar sleeve connecting structure, segment prefabricated assembly type pier and construction method |
-
2020
- 2020-01-10 CN CN202020059352.5U patent/CN212103640U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106848A (en) * | 2020-01-10 | 2021-07-13 | 中国国家铁路集团有限公司 | Steel bar sleeve connecting structure, segment prefabricated assembly type pier and construction method |
| CN113006373A (en) * | 2021-01-29 | 2021-06-22 | 中铁十六局集团第二工程有限公司 | Segmental beam additionally provided with steel pipe and horizontally distributed steel bars |
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