CN113373799A - Mortise and tenon type spliced pier structure and implementation method thereof - Google Patents
Mortise and tenon type spliced pier structure and implementation method thereof Download PDFInfo
- Publication number
- CN113373799A CN113373799A CN202110577622.0A CN202110577622A CN113373799A CN 113373799 A CN113373799 A CN 113373799A CN 202110577622 A CN202110577622 A CN 202110577622A CN 113373799 A CN113373799 A CN 113373799A
- Authority
- CN
- China
- Prior art keywords
- tenon
- mortise
- pier
- standard
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 31
- 210000002435 tendon Anatomy 0.000 claims description 24
- 239000004567 concrete Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000452 restraining effect Effects 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 description 8
- 238000011160 research Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011374 ultra-high-performance concrete Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
Abstract
The invention provides a mortise and tenon type spliced pier structure and an implementation method thereof. The pier structure includes: pier is assembled to tenon fourth of twelve earthly branches formula of a plurality of vertical settings, every pier comprises interconnect's superstructure and substructure, and superstructure sets up at the top of pier, including bridging structure (1), and substructure is from last to including bent cap (2), standard festival section (3) and basis (4) down in proper order, bent cap (2) with bridging structure (1) links to each other through the support. The novel dovetail joint is applied to the mortise and tenon type assembled pier structure, and the novel mortise and tenon type joint of the prefabricated segment in the mortise and tenon type assembled pier structure is realized. The integral structure of the mortise-tenon type assembled pier structure provided by the embodiment of the invention is prefabricated in a factory, and the quality of components is convenient to control; the construction of the sections on site is high in construction efficiency and short in construction period, the problem of connection of reinforcing steel bars at the joint is solved, interference on surrounding traffic is small, and influence on the surrounding environment is weakened.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a mortise and tenon type spliced pier structure and an implementation method thereof.
Background
The segment prefabrication and assembly technology is one of industrial structural systems which are applied and researched more at home and abroad at present, and compared with the traditional cast-in-place structure, the segment prefabrication and assembly technology has the advantages of high construction speed, high prefabricated part quality, few construction interference factors, small construction safety risk, environmental friendliness and the like. In recent years, prefabricated section spliced piers are gradually applied and popularized in bridge construction at home and abroad, and bridge projects such as Shanghai Yangtze river bridges, Hangzhou bay bridges, HongZhu Australian bridges, John Kennedy dike bridges in the United states and the like all adopt the technology.
In the 'equivalent cast-in-place' prefabricated bridge pier, sleeve grouting connection has a relatively clear force transmission mechanism and less field wet operation, but the price is higher than that of the traditional cast-in-place concrete structure, and the deformation capacity is slightly poor; the corrugated pipe grouting connection has the advantages of low construction precision requirement, reliable connection performance and the like, but the segment size is limited, and the congestion at the node is aggravated by the embedded corrugated pipe; the grouting connection of the reserved slotted hole has low requirement on the construction precision, the construction process is simple, but the construction progress is slow, and the reserved slotted hole causes the arrangement of the reinforcing steel bars to be inconvenient; the socket joint type connection has the advantages that the wet operation amount of a socket joint type connection site is small, the construction speed is high, the requirement on the strength of the periphery of a reserved hole is high, and the energy consumption capability is poor; the cast-in-place wet joint connection prefabricated structure has the advantages of good overall mechanical property, reliable stress, low requirement on the working level of construction workers, and low construction efficiency.
In the non-equal cast-in-place prefabricated bridge pier, the post-tensioned prestressing force is applied through the prestressing tendons, so that the elasticity of the prefabricated parts is basically kept, the tensile damage of the prefabricated parts is reduced, and the self-resetting capability of the prefabricated parts is improved. The non-equivalent cast-in-place assembled pier without special energy consumption measures has a nonlinear elastic hysteresis behavior, and after loading, the assembled pier has strong self-resetting capability and small residual deformation, but has poor energy consumption capability, so that the displacement requirement of the assembled pier under the action of an earthquake is large. The hybrid connection form has good energy consumption capability and self-resetting capability, is widely concerned in recent years, but has relatively limited research on the seam form.
In the wooden structure, the mortise and tenon joint component has the advantages of high integrity, good stability, simple and direct installation process and the like, and is more mature in application in ancient buildings. Relevant research indicates that the mortise and tenon joint in the wooden house has the semi-rigid characteristic and can play a better damping effect compared with the modern building structure joint. The experimental research shows that the modern non-wooden structure and the tenon-and-mortise structure are reasonably combined for use, the structural integrity is good, the bearing capacity is higher, and the anti-seismic performance index is not weaker than that of the common reinforced concrete structure. However, the existing tenon-and-mortise structure is simpler in form, and the seismic performance in a high-intensity area is not clear. The tenon-and-mortise type joint structure is good in overall mechanical property, is used for a high-intensity area assembly type bridge structure under the condition of applying prestress, and has development potential. Therefore, the method is applicable to the research and development of the tenon-and-mortise type novel spliced pier structure in the high-intensity area and has important scientific significance.
A prefabricated solid pier for railways in the prior art is formed by stacking three types of sections, wherein the first section is a complete section, the second section comprises three modules, the third section comprises four modules, and the modules are tightly occluded in a mortise-tenon connection mode. And epoxy adhesive is coated on the segment contact surface and the mortise and tenon part of the module on the groove and the boss of the shear key on the module and the upper surface of the module. Three kinds of prefabricated sections are provided with pre-buried bellows along length direction, and pre-buried pore keeps the position unanimous to prestressing tendons and ordinary reinforcing bar can run through the intercommunication. High-strength slurry is injected between the corrugated pipe and the prestressed reinforcement, and ultra-high-performance concrete UHPC is injected between the corrugated pipe and the ordinary reinforcement to connect the prefabricated pier sections into a whole.
The second kind of prefabricated connection structure scheme of assembling solid pier among the prior art includes: the prefabricated pier stud segments are spliced in a mortise-tenon manner through tenons and mortises arranged on the joint surface, and the prefabricated pier stud segments positioned at the bottom are spliced in a mortise-tenon manner through tenons and mortises arranged on the joint surface of the prefabricated pier stud segments and the bearing platform; the prefabricated pier column segments and the bearing platform are connected through the penetrating steel bars to form a whole.
The above-mentioned solid pier scheme of prefabricated assembling in prior art's shortcoming does:
(1) the 'cast-in-place equivalent' prefabricated bridge pier: the grouting connection ductility and self-resetting capability of the sleeve are poor, and the construction cost is high; the size of the grouting connection section of the corrugated pipe is limited, and the congestion at the node is aggravated by embedding the corrugated pipe; the grouting connection construction progress of the reserved slotted hole is slow, and the reserved slotted hole causes the arrangement of the reinforcing steel bars to be inconvenient; the socket type connection has higher requirement on the strength of the periphery of the reserved hole and has poorer energy consumption capability; the cast-in-place wet joint connection consumes a large amount of manpower and material resources, and the construction efficiency is low.
(2) 'non-equal cast-in-place' prefabricated bridge pier: the nonequivalent cast-in-place connection without the energy consumption device has small energy consumption capability, poor anti-seismic performance and limited application range; the hybrid non-equal cast-in-place connection keeps more problems similar to the equal cast-in-place connection, and the research on seam form is limited.
(3) The existing mortise and tenon joint technology is mainly applied to ancient building timber structures, the research in bridge engineering is not mature enough, and the joint form is stopped in simple inclined or round mortise and tenon joints; the traditional mortise-tenon joint combined structure has good hysteretic energy consumption capability, but has large residual strain, is difficult to repair after earthquake, has more obvious defects in structural performance, is not oriented to a high-intensity area in relevant technical research, has uncertain earthquake resistance and smaller application range.
Disclosure of Invention
The embodiment of the invention provides a tenon-and-mortise type assembled pier structure and an implementation method thereof, and aims to provide a novel tenon-and-mortise type assembled pier structure which meets the requirement of a high-intensity area on seismic performance.
In order to achieve the purpose, the invention adopts the following technical scheme.
According to an aspect of the present invention, there is provided a mortise and tenon type pier assembling structure, including: pier is assembled to tenon fourth of twelve earthly branches formula of a plurality of vertical settings, every pier comprises interconnect's superstructure and substructure, superstructure sets up at the top of pier, including span structure (1), substructure is from last to including bent cap (2), standard festival section (3) and basis (4) down in proper order, bent cap (2) with span structure (1) links to each other through the support.
Preferably, the standard segment (3) arranged vertically comprises: tenon head portion (5), tenon afterbody (6) and non-tenon fourth of twelve earthly branches portion (7), the top surface one end of standard festival section (3) is regular trapezoid, and the other end is down trapezoidally, and the same degree of depth is sunk to the top surface both sides, respectively keeps upwards protruding terraced platform section.
Preferably, tenon portion (5) include tenon portion halfpace (8), tenon portion lower platform (9), tenon portion big end (10) tenon portion little end (11) and central reservation pore (13), tenon portion halfpace (8) are located tenon portion (5) both sides, highly are less than the top surface of tenon portion (5), platform (9) are in the foot of tenon portion (5) under the tenon portion, and tenon portion big end (10) are the mortise and tenon joint structure of connecting two adjacent sections, tenon portion little end (11) are located the offside of tenon portion big end (10).
Preferably, the tenon part lower platform (9) comprises four sunken small platforms surrounding the periphery of the tenon part, the sunken small platforms are in a right-angle trapezoid shape, the area of the two symmetrical tenon part lower platforms (9) close to the big end (10) of the tenon part is smaller than that of the two symmetrical tenon part lower platforms (9) close to the small end (11) of the tenon part, and the four sunken small platforms are connected with corresponding four tenon tail corners (6) when adjacent standard sections are connected.
Preferably, the cross-sectional width of the large tenon head end (10) gradually narrows from top to bottom in the vertical direction, and is in a reversed trapezoid shape, and then keeps a section of width unchanged, the small tenon head end (11) is located at the opposite side of the large tenon head end (10), and the cross-sectional width gradually widens from top to bottom, and is in a regular trapezoid shape, and then keeps a section of width unchanged.
Preferably, the tenon tail part (6) comprises 4-limb tenon tail corner parts (12), wherein the cross-sectional sizes of two limbs vary with the vertical height and are smaller as the distance from the non-tenon-and-mortise parts (7) of the standard segment (3) increases, the cross-sectional sizes of the other two limbs vary with the height and are smaller as the distance from the non-tenon-and-mortise parts (7) of the standard segment (3) increases, and the main body structure of the tenon tail part (6) is used for matching the connection of the tenon heads (5) of the adjacent segments.
Preferably, the prestressed tendons (14) are arranged on the central reserved hole (13), and the prestressed tendons (14) provide self-resetting capability.
Preferably, the pier structure further comprises longitudinal bars (15) and stirrups (16), wherein the longitudinal bars (15) and the concrete structure work in a cooperative mode to bear various loads, and the stirrups (16) are used for restraining concrete of various sections.
According to another aspect of the present invention, there is provided an implementation method of a mortise-and-tenon type assembled pier structure, which is suitable for the mortise-and-tenon type assembled pier structure, and the method includes:
the method comprises the steps of (I) pouring a plurality of standard sections of concrete of a mortise and tenon type prefabricated assembled pier in advance, laying a steel reinforcement framework of the standard sections, vertically placing tenon tail corner parts (12) which are thin and wide downwards in the vertical direction of two limbs of one lifting standard section above a tenon head step (8) of the standard section to be connected on a construction site, enabling the section to be connected to be located below the standard section which is moving in a lifting mode, enabling a center reserved hole (13) of the section to be connected to be opposite to a tenon head large end (10) of the lifting standard section, enabling the lifting standard section to be transversely moved and installed along a step plane of the tenon head step (8) of the standard section to be connected towards the tenon head large end (4), then installing along a step inclined plane of the tenon head step (8) of the standard section to be connected until the tenon tail corner parts (12) of the lifting standard section are in close fit with a tenon head lower step (9) of the standard section to be connected, the large head (10) of the tenon head part of the hoisting standard segment is embedded into the middle inverted trapezoidal concave part of the two tenon tail corners (12) at the asymmetric sides of the standard segment to be connected, namely, the large head is installed in place.
(II) repeating the previous step until the standard sections are adjacent to each other, and respectively connecting the standard sections, the cover beam and the foundation in place;
the prestressed tendons (14) penetrate through the central reserved hole (13), the prestressed tendons (14) are tensioned by adopting tensioning equipment, the end parts of the structural members are anchored by means of an anchorage device, so that the structure generates pre-compressive stress, the central reserved hole (13) is grouted and sealed, the pier longitudinal tendons (15) and the stirrups (16) are installed, and the integral construction of the pier structure is completed.
Preferably, the mortise and tenon type assembled pier structure is suitable for high-intensity seismic regions.
According to the technical scheme provided by the embodiment of the invention, the novel dovetail joint is applied to the mortise and tenon type assembled pier structure, and the novel mortise and tenon type joint of the prefabricated segment in the mortise and tenon type assembled pier structure is realized. The integral structure of the mortise-tenon type assembled pier structure provided by the embodiment of the invention is prefabricated in a factory, and the quality of components is convenient to control; the construction of the sections on site is high in construction efficiency and short in construction period, the problem of connection of reinforcing steel bars at the joint is solved, interference on surrounding traffic is small, and influence on the surrounding environment is weakened.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a transverse bridge vertical view of a tenon-and-mortise type novel segment prefabricated assembled bridge provided by the embodiment of the invention;
the reference numbers in FIG. 1 illustrate: 1-bridge span structure, 2-capping beam, 3-standard segment and 4-foundation;
the arrows marked in fig. 1 illustrate: the arrow direction is the direction of the vehicle on the bridge of the invention.
Fig. 2 is a three-dimensional schematic view of a single bridge pier of the tenon-and-mortise type novel segment prefabricated assembled bridge pier provided by the embodiment of the invention.
Fig. 3 is a front view, a rear view, a left view, a right view, a top view and a bottom view (sequentially from left to right and from top to bottom) of a standard segment of the tenon-and-mortise type novel segment prefabricated assembled pier provided by the embodiment of the invention.
Fig. 4 is an enlarged schematic plan view of a standard segment of the tenon-and-mortise type novel segment prefabricated assembled pier;
the stippled lines in FIG. 4 illustrate that: the dotted line is the only line of symmetry in the top view of the standard segment.
Fig. 5, 6 and 7 are three-dimensional schematic diagrams of standard segments of a tenon-and-mortise type novel segment prefabricated assembled pier provided by the embodiment of the invention;
the designations in FIG. 5 illustrate: 5-tenon part, 6-non-mortise part and 7-tenon tail part;
the designations in fig. 6 illustrate: 8-tenon part step, 9-tenon part lower platform, 10-tenon part large end, 11-tenon part small end, 12-tenon tail corner and 13-central reserved hole channel.
Fig. 8 is a schematic horizontal section view of a standard segment of a tenon-and-mortise type novel segment prefabricated assembled pier provided by the embodiment of the invention;
the designations in fig. 8 illustrate: 13-a central reserved hole channel, 14-a prestressed tendon, 15-a longitudinal tendon and 16-a stirrup.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The embodiment of the invention provides a mortise and tenon type spliced pier structure suitable for a high-intensity seismic region. The novel mortise and tenon joint is adopted as the joint form for connecting the segments of the prefabricated spliced piers. And all sections in the mortise-tenon type spliced pier structure are in reinforced concrete structures, and are anchored by combining post-tensioned prestressing post-tensioned reinforcing bars, so that construction and installation are completed.
Fig. 1 is a transverse bridge vertical view of a tenon-and-mortise type segment prefabricated assembled bridge suitable for a high-intensity seismic region, provided by the embodiment of the invention, and the arrow direction in fig. 1 is the bridge up-running direction of the bridge. The tenon-and-mortise type segment prefabricated assembled bridge comprises a plurality of tenon-and-mortise type assembled bridge piers vertically arranged, and each bridge pier comprises: the bridge span structure comprises a bridge span structure (1), a cover beam (2), a standard segment (3) and a foundation (4). Each pier is composed of an upper structure and a lower structure which are connected with each other, wherein the upper structure comprises a bridge span structure (1) which is arranged at the top of the pier. The substructure consists of three parts: the capping beam (2), the standard segment (3) and the foundation (4) are arranged from top to bottom in sequence. The bent cap (2) is connected with the bridge span structure (1) through a support. Fig. 2 is a three-dimensional schematic view of a single bridge pier of the tenon-and-mortise type novel segment prefabricated assembled bridge pier provided by the embodiment of the invention.
Fig. 3 is a front view, a rear view, a left view, a right view, a top view and a bottom view (sequentially from left to right and from top to bottom) of a standard segment of the tenon-and-mortise type novel segment prefabricated assembled pier provided by the embodiment of the invention. Fig. 4 is an enlarged top view of the standard segment, and the dotted line in fig. 4 is the only line of symmetry in the top view of the standard segment. Fig. 5, 6 and 7 are three-dimensional schematic views of the standard segment (3), the reference numbers in fig. 5 indicating: a tenon head part (5), a non-tenon-and-mortise part (6) and a tenon tail part (7); the designations in fig. 6 illustrate: a tenon part step (8), a tenon part lower platform (9), a tenon part large end (10), a tenon part small end (11), a tenon tail corner part (12) and a central reserved hole channel (13). Fig. 8 is a schematic horizontal cross-section of the standard segment (3), with reference numbers in fig. 8: a central reserved hole channel (13), a prestressed tendon (14), a longitudinal tendon (15) and a stirrup (16).
The vertically arranged standard segment (3) comprises: tenon head (5), tenon afterbody (6) and non-tenon fourth of twelve earthly branches portion (7), structural style as follows: one end of the top surface of the standard segment (3) is in a regular trapezoid shape, the other end of the top surface of the standard segment is in an inverted trapezoid shape, the two sides of the top surface sink to the same depth, and the ladder platform sections protruding upwards are reserved respectively. As shown in fig. 4, the top view can clearly distinguish the two ends of the top surface as asymmetric trapezoid shape, i.e. one end is regular trapezoid and the other end is reverse trapezoid for the purpose of description. Both of which reflect this shape feature and are summarized here in terms of the top surface shape.
The structural form of the tenon head part (5) and the tenon tail part (6), namely the novel mortise and tenon joint formed by the tenon head part and the tenon tail part together is an important embodiment which is different from the prior art. The tenon part (5) comprises a tenon part step (8), a tenon part lower platform (9), a tenon part large end (10), a tenon part small end (11) and a central reserved hole passage (13). The tenon head part terraces (8) are positioned on two sides of the tenon head part (5), are lower than the top surface of the tenon head part (5), and can be embedded into the middle concave part of two tenon tail corner parts (12) on the symmetrical sides of adjacent sections. The tenon lower platform (9) is positioned at the foot part of the tenon part (5) (namely, the small sunken platform around the tenon part), the four parts are in a right-angled trapezoid shape, the area of the two symmetrical tenon lower platforms (9) close to the big end (10) of the tenon part is smaller than that of the two symmetrical tenon lower platforms (9) close to the small end (11) of the tenon part, and the four parts are connected with the corresponding four tenon tail corners (6) when the sections are connected.
The tenon head large end (10) is in a tenon-and-mortise structure connecting two adjacent sections, the width of the cross section gradually narrows from top to bottom in the vertical direction and is in an inverted trapezoid shape, a section of width is kept unchanged, the horizontal plane part of the tenon head large end (10) positioned on the top surface of the tenon head (5) is also in an inverted trapezoid shape, and the horizontal plane part can be embedded into the middle inverted trapezoid concave part of the two tenon tail angle parts (12) on the asymmetric sides of the adjacent sections. The small tenon head end (11) is positioned on the opposite side of the large tenon head end (10) and is an important component for connection between the segments, the width of the cross section gradually widens from top to bottom in the vertical direction and is in a regular trapezoid shape, a section of width is kept unchanged, the horizontal plane part of the small tenon head end (11) positioned on the top surface of the tenon head part (5) is also in a regular trapezoid shape and can be embedded into the concave part in the middle of the regular trapezoid shape of the two tenon tail corner parts (12) on the asymmetric sides of the adjacent segments.
The tenon tail part (6) mainly comprises a tenon tail corner part (12) and 4 limbs in total, wherein the section sizes of the two limbs are changed along with the vertical height, and the section sizes are smaller (the overall change rate of the section sizes is small) when the two limbs are farther away from the non-tenon-mortise part (7) of the standard segment (3); the section sizes of the other two limbs are changed along with the height, and the section sizes are smaller when the other two limbs are closer to the non-mortise part (7) of the standard segment (3) (the overall change rate of the section sizes is small). The main structure of the tenon tail part (6) is used for matching the connection of the tenon head parts (5) of the adjacent sections.
The standard segment is integrally provided with a prestressed tendon central reserved hole (13) which is cylindrical and used for distributing prestressed tendons (14).
The bent cap (2) comprises two ends: one end of the bridge span structure (1) is connected, and the other end of the bridge span structure is connected with the adjacent standard segment (3).
The working principle of the tenon-and-mortise type segment prefabricated assembled bridge suitable for the high-intensity seismic area in the embodiment of the invention is as follows: after the tenon head parts (5) and the tenon tail parts (6) of the adjacent standard segments are connected up and down to form a tenon-and-mortise structure, the parts are connected into a whole to play a role together by adopting post-tensioned prestressing force. After each section is connected, novel mortise and tenon joint forms, lateral load and vertical load are jointly born to tenon head (5) and tenon afterbody (6), prestressing tendons (14) provide from the reset ability, indulge muscle (15) and concrete structure collaborative work and bear each item load, stirrup (16) mainly used retrain each section core concrete, and the mechanical properties that the structure wholly appears satisfy the antidetonation requirement in high intensity district.
The concrete implementation mode of the novel tenon-and-mortise type prefabricated assembled pier structure comprises the following steps of:
the novel prefabricated standard segment of assembling the pier of tenon fourth of twelve earthly branches formula of prefabricating in mill lays and accomplishes framework of steel reinforcement, including indulging muscle (15) and stirrup (16), pours and accomplishes each prefabricated standard segment of concrete. In a construction site, two narrow and wide tenon tail angle parts (12) in the vertical direction of two limbs of a hoisting standard section are vertically placed above a tenon head ladder platform (8) of a standard section to be connected, the section to be connected is located below the standard section which is moving in a hoisting process, and a central reserved hole (13) of the section to be connected is over against a tenon head large end (10) of the hoisting standard section. The hoisting standard segment is transversely moved and installed towards the tenon large end (4) along the terrace plane of the tenon portion terrace (8) of the standard segment to be connected, and then installed along the terrace inclined plane of the tenon portion terrace (8) of the standard segment to be connected until the tenon tail corner portion (12) of the hoisting standard segment is in contact and close fit with the tenon lower terrace (9) of the standard segment to be connected, and the tenon large end (10) of the hoisting standard segment is embedded into the middle inverted trapezoidal concave portion of the tenon tail corner portions (12) on the asymmetric sides of the standard segment to be connected, namely, the hoisting standard segment is installed in place.
And (II) repeating the previous step until the standard sections are connected in place with the cover beam and the foundation respectively. A central reserved hole (13) is utilized to arrange a prestressed tendon (14): and (3) penetrating a prestressed tendon (14) at the central reserved hole (13), tensioning the prestressed tendon (14) by adopting tensioning equipment, anchoring at the end part of the structural member by using an anchorage device to generate a pre-compressive stress on the structure, and finally grouting and sealing the central reserved hole (13). From this, pier structure integral construction accomplishes.
The tenon width, the tenon gradient and the size of the model size in the novel tenon-and-mortise type prefabricated assembled pier can be changed. The diameters, arrangement and number of the stressed steel bars and the stirrups can be adjusted according to design requirements, and the number of the prestressed tendon channels can also be adjusted.
In conclusion, the novel dovetail joint is applied to the mortise-tenon type assembled pier structure, the novel mortise-tenon type joint of the prefabricated segment in the mortise-tenon type assembled pier structure is realized, and the mortise-tenon type assembled pier structure is different from the existing mortise-tenon type joint and has distinctive characteristics and innovativeness in structural form.
The integral structure of the mortise-tenon type assembled pier structure provided by the embodiment of the invention is prefabricated in a factory, and the quality of components is convenient to control; the construction of the sections on site is high in construction efficiency and short in construction period, the problem of connection of reinforcing steel bars at the joint is solved, interference on surrounding traffic is small, and influence on the surrounding environment is weakened.
The novel mortise-tenon type assembled pier structure provided by the embodiment of the invention effectively combines the semi-rigid characteristic of mortise and tenon, and compared with other dry joint type structures, the bearing capacity and integrity of the structure are improved. The proposed pier structure meets the requirements of high-intensity regions with respect to seismic performance.
The embodiment of the invention adopts a post-tensioning prestressing method to arrange the prestressed tendons, and has good self-resetting capability.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: the components in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a pier structure is assembled to mortise type, its characterized in that includes: pier is assembled to tenon fourth of twelve earthly branches formula of a plurality of vertical settings, every pier comprises interconnect's superstructure and substructure, superstructure sets up at the top of pier, including span structure (1), substructure is from last to including bent cap (2), standard festival section (3) and basis (4) down in proper order, bent cap (2) with span structure (1) links to each other through the support.
2. The structure of pier is assembled to mortise type according to claim 1, characterized in that, the standard section (3) of vertical setting includes: tenon head portion (5), tenon afterbody (6) and non-tenon fourth of twelve earthly branches portion (7), the top surface one end of standard festival section (3) is regular trapezoid, and the other end is down trapezoidally, and the same degree of depth is sunk to the top surface both sides, respectively keeps upwards protruding terraced platform section.
3. The structure of pier is assembled to mortise-tenon joint formula of claim 1, characterized in that tenon portion (5) includes tenon portion halfpace (8), tenon portion lower platform (9), tenon portion big end (10), tenon portion small end (11) and central preformed hole (13), tenon portion halfpace (8) are located tenon portion (5) both sides, highly are less than the top surface of tenon portion (5), platform (9) are in the foot of tenon portion (5) under the tenon portion, tenon portion big end (10) are the mortise-tenon joint structure of connecting two adjacent segments, tenon portion small end (11) are located the offside of tenon portion big end (10).
4. The mortise-tenon type assembled pier structure according to claim 3, wherein the tenon lower platform (9) comprises four sunken small platforms surrounding the periphery of the tenon portion, each sunken small platform is in a right trapezoid shape, the area of each two symmetrical tenon lower platform (9) close to the large end (10) of the tenon portion is smaller than that of each two symmetrical tenon lower platform (9) close to the small end (11) of the tenon portion, and the four sunken small platforms are connected with corresponding four tenon tail portions (6) when adjacent standard sections are connected.
5. The mortise type assembled pier structure according to claim 4, wherein the cross-sectional width of the large tenon end (10) gradually narrows from top to bottom in the vertical direction, the cross-sectional width is inverted trapezoid, a section of the cross-sectional width is kept unchanged, the small tenon end (11) is located at the opposite side of the large tenon end (10), the cross-sectional width gradually widens from top to bottom, the cross-sectional width is regular trapezoid, and a section of the cross-sectional width is kept unchanged.
6. A mortise and tenon type assembled pier structure according to claim 4, wherein the tenon tail part (6) comprises 4-limb tenon tail corner parts (12), wherein the cross-sectional sizes of two limbs are changed along with the vertical height, the cross-sectional sizes of the two limbs are smaller when the two limbs are farther away from the non-tenon-mortise part (7) of the standard segment (3), the cross-sectional sizes of the other two limbs are changed along with the height, the cross-sectional sizes of the two limbs are smaller when the two limbs are closer to the non-tenon-mortise part (7) of the standard segment (3), and the main body structure of the tenon tail part (6) is used for matching the connection of the tenon head parts (5) of the adjacent segments.
7. The mortise type assembled pier structure according to claim 3, wherein the prestressed tendons (14) are arranged on the central reserved hole (13), and the prestressed tendons (14) provide self-resetting capability.
8. The mortise-tenon type assembled pier structure according to claim 3, further comprising longitudinal bars (15) and stirrups (16), wherein the longitudinal bars (15) and the concrete structure work cooperatively to bear various loads, and the stirrups (16) are used for restraining concrete of each section.
9. An implementation method of a mortise-and-tenon type assembled pier structure, which is suitable for the mortise-and-tenon type assembled pier structure of any one of claims 1 to 8, and comprises the following steps:
the method comprises the steps of (I) pouring a plurality of standard sections of concrete of a mortise and tenon type prefabricated assembled pier in advance, laying a steel reinforcement framework of the standard sections, vertically placing tenon tail corner parts (12) which are thin and wide downwards in the vertical direction of two limbs of one lifting standard section above a tenon head step (8) of the standard section to be connected on a construction site, enabling the section to be connected to be located below the standard section which is moving in a lifting mode, enabling a center reserved hole (13) of the section to be connected to be opposite to a tenon head large end (10) of the lifting standard section, enabling the lifting standard section to be transversely moved and installed along a step plane of the tenon head step (8) of the standard section to be connected towards the tenon head large end (4), then installing along a step inclined plane of the tenon head step (8) of the standard section to be connected until the tenon tail corner parts (12) of the lifting standard section are in close fit with a tenon head lower step (9) of the standard section to be connected, the large head (10) of the tenon head part of the hoisting standard segment is embedded into the middle inverted trapezoidal concave part of the two tenon tail corners (12) at the asymmetric sides of the standard segment to be connected, namely, the large head is installed in place.
(II) repeating the previous step until the standard sections are adjacent to each other, and respectively connecting the standard sections, the cover beam and the foundation in place;
the prestressed tendons (14) penetrate through the central reserved hole (13), the prestressed tendons (14) are tensioned by adopting tensioning equipment, the end parts of the structural members are anchored by means of an anchorage device, so that the structure generates pre-compressive stress, the central reserved hole (13) is grouted and sealed, the pier longitudinal tendons (15) and the stirrups (16) are installed, and the integral construction of the pier structure is completed.
10. The method according to claim 9, wherein the mortise and tenon type spliced pier structure is suitable for high-intensity seismic regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577622.0A CN113373799A (en) | 2021-05-26 | 2021-05-26 | Mortise and tenon type spliced pier structure and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577622.0A CN113373799A (en) | 2021-05-26 | 2021-05-26 | Mortise and tenon type spliced pier structure and implementation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113373799A true CN113373799A (en) | 2021-09-10 |
Family
ID=77572014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110577622.0A Pending CN113373799A (en) | 2021-05-26 | 2021-05-26 | Mortise and tenon type spliced pier structure and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113373799A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699876A (en) * | 2021-09-24 | 2021-11-26 | 江苏瑞沃建设集团有限公司 | Pier is assembled in prefabricated of segment of vertical continuous band tenon fourth of twelve earthly branches structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020011706A (en) * | 2000-08-04 | 2002-02-09 | 김희, 이방주 | Fabricated pier and Fabricated pier construction method |
| CN202380387U (en) * | 2011-12-16 | 2012-08-15 | 中国建筑第六工程局有限公司 | Construction structure for carrying out prefabricated erection of box beams on bridge |
| CN104343080A (en) * | 2014-09-29 | 2015-02-11 | 北京工业大学 | Method for constructing segmental prefabricating and assembling swing foundation pier |
| CN104404869A (en) * | 2014-11-26 | 2015-03-11 | 天津港航工程有限公司 | Pile column type concrete hollow pile pier structure |
| CN204849571U (en) * | 2015-08-12 | 2015-12-09 | 江苏建筑职业技术学院 | Prefabricated assembly pier of posttension prestressing force tongue -and -groove plug -in type |
| CN108316131A (en) * | 2018-04-17 | 2018-07-24 | 苏交科集团（甘肃）交通规划设计有限公司 | A kind of precast block formula full prestressing pier structure and its method of construction |
| US20210032819A1 (en) * | 2018-02-05 | 2021-02-04 | Hengqin Gonge Technology Co., Ltd. | A precast segmental pier reinforced with both conventional steel bars and high-strength steel bars |
-
2021
- 2021-05-26 CN CN202110577622.0A patent/CN113373799A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020011706A (en) * | 2000-08-04 | 2002-02-09 | 김희, 이방주 | Fabricated pier and Fabricated pier construction method |
| CN202380387U (en) * | 2011-12-16 | 2012-08-15 | 中国建筑第六工程局有限公司 | Construction structure for carrying out prefabricated erection of box beams on bridge |
| CN104343080A (en) * | 2014-09-29 | 2015-02-11 | 北京工业大学 | Method for constructing segmental prefabricating and assembling swing foundation pier |
| CN104404869A (en) * | 2014-11-26 | 2015-03-11 | 天津港航工程有限公司 | Pile column type concrete hollow pile pier structure |
| CN204849571U (en) * | 2015-08-12 | 2015-12-09 | 江苏建筑职业技术学院 | Prefabricated assembly pier of posttension prestressing force tongue -and -groove plug -in type |
| US20210032819A1 (en) * | 2018-02-05 | 2021-02-04 | Hengqin Gonge Technology Co., Ltd. | A precast segmental pier reinforced with both conventional steel bars and high-strength steel bars |
| CN108316131A (en) * | 2018-04-17 | 2018-07-24 | 苏交科集团（甘肃）交通规划设计有限公司 | A kind of precast block formula full prestressing pier structure and its method of construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699876A (en) * | 2021-09-24 | 2021-11-26 | 江苏瑞沃建设集团有限公司 | Pier is assembled in prefabricated of segment of vertical continuous band tenon fourth of twelve earthly branches structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207017144U (en) | A kind of attachment structure for full precast assembly bridge pier | |
| CN104153287B (en) | There is the section assembling concrete frame bridge pier system and method for self-resetting capability | |
| WO2019149270A1 (en) | Assembled pier for mixed reinforcement of normal steel rebar and finished threaded steel bar | |
| CN109811648B (en) | Railway solid high pier for connecting prefabricated assembled segments in prestress segmented manner | |
| CN111962386A (en) | Energy-dissipation and shock-absorption type self-resetting prefabricated segment assembled pier structure and construction method thereof | |
| CN110777661B (en) | Flange connection prefabricated assembly pier structure and construction method thereof | |
| CN103711330A (en) | Method for using prefabricated reinforced concrete frame to reinforce existing structure through prestressing assembly | |
| CN112900246A (en) | Novel segment prefabricated assembled pier and assembling method thereof | |
| CN103938533A (en) | Simple-supported continuous structure and construction method thereof | |
| CN111749113A (en) | Mortise and tenon connection steel-concrete combined assembly type arch bridge and construction method thereof | |
| CN110055979A (en) | For the precast prestressed concrete anchor pier of slope reinforcement and production and construction method | |
| CN110725195A (en) | Connecting method for assembly type pier and bearing platform anchoring steel bar sleeve-insertion post-cast RPC and application thereof | |
| Combault et al. | Rion-Antirion Bridge, Greece–concept, design, and construction | |
| CN113373799A (en) | Mortise and tenon type spliced pier structure and implementation method thereof | |
| CN113373797B (en) | Prefabricated assembled concrete anti-seismic pier structure and repairing method | |
| CN208167489U (en) | A kind of anti-girder of Single column pier bridge topples device | |
| CN113699876A (en) | Pier is assembled in prefabricated of segment of vertical continuous band tenon fourth of twelve earthly branches structure | |
| CN108442238A (en) | A kind of transverse direction assembled runback bit-type Antivibration block and its construction method | |
| CN112627016A (en) | Assembled pier with self-resetting and strong energy consumption and construction method thereof | |
| CN217419589U (en) | Pile-wall integrated supporting structure | |
| CA1186108A (en) | Tension arch structure | |
| CN115369747A (en) | Self-resetting prefabricated assembled pier | |
| CN115045181A (en) | Socket joint type node connection method and structure for prefabricated pier column and bearing platform in middle and high intensity region | |
| CN210459263U (en) | Bearing platform type pile structure | |
| CN210887572U (en) | Mixed reinforcement embedded low-prestress dry beam-column joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210910 |