CN212404780U - Bridge capable of being repeatedly disassembled and assembled - Google Patents

Abstract

A brand new bridge capable of being repeatedly disassembled and assembled is characterized by comprising a beam type bridge longitudinal structure, a bent cap structure and a pier structure which are disassembled and assembled, wherein the positions and the installation relationship of the beam type bridge longitudinal structure, the bent cap structure and the pier structure are the same as those of a traditional bridge. The bridge comprises a detachable beam type bridge longitudinal structure. And secondly, the bridge capping beam structure can be repeatedly disassembled and assembled. Thirdly, the cylindrical pier structure can be repeatedly disassembled and assembled. The structure provided by the application provides a brand new thought for protecting resources or environment in China, reducing material and economic waste and realizing the repeated use of bridges, has great economic and social benefits and has great popularization and application values.

Description

Bridge capable of being repeatedly disassembled and assembled

Technical Field

The application belongs to the field of bridge engineering, in particular to the technical field of prestressed concrete beam bridges, and is suitable for popularization of the current assembling construction technology in China.

Background

China is a big bridge construction country, particularly concrete bridges are large in size and wide in range, densely-arranged assembled bridges are mostly adopted in the upper structure, and the cross section forms comprise hollow slabs, T-shaped beams, small box beams and the like. In recent years, industrialized construction bridges are becoming hot spots in the industry, and the advantages of environmental protection, guaranteed prefabricated part quality inspection system and rapid site construction speed are mainly embodied. Meanwhile, the modern construction method also meets the requirement of technical progress of the industry.

In the field of small-span fabricated bridges, the whole-span prefabrication hoisting is mostly adopted for beam bodies; in the field of large-span bridges, the span of a concrete bridge for prefabricated section assembly construction in China is close to 200 meters; the span of the fabricated construction bridge of the steel-concrete composite bridge is increased to about 70 meters. The assembly type construction process or design considers complete bonding between the sections, and the disassembly or repeated connection construction does not exist.

At present, bridge design and construction are carried out in a 'normal installation' angle, the bridges cannot be 'disassembled backwards', namely how to treat the bridges in the future is not considered at the beginning of design, the influence on the environment caused by the final disassembly of concrete bridges in industry is received, and in addition, the rapid expansion of cities and the rapid development of traffic in China, a plurality of bridges have the problem of short service life, and the bridges are generally disassembled and rebuilt instead of being disassembled and reassembled for use, namely, a complete bridge construction method with the whole service life cycle and a system is not formed.

How to establish a set of complete system, and the range covers from small-span assembled bridge girders to middle-and large-span prefabricated section assembling construction bridge girders, including all detachable and repeatedly assembled bridge structures and construction technologies of concrete bridge girders of large-span cable-stayed bridges, must bring great benefits to the environment and economy of China.

Disclosure of Invention

The purpose of this application lies in: the defects of the prior art are overcome, the design method suitable for the bridge and the novel bridge are provided, and the method aims at the assembly type construction of the upper structure and the lower structure of the concrete bridge, so that the prefabrication, the transportation and the installation of the structure and the reuse of the components are realized.

The application aims at solving the problem that the existing constructed bridge is not dismantled in the service life due to the current economic construction development, particularly the requirement of bridge construction and the future urban development, thereby bringing greater economic waste and environmental resource damage, and providing a bridge structure which can be repeatedly disassembled and assembled and a method thereof based on the design concept of the whole service life of the structure, the design concept of the whole service life is not only the whole bridge design to the end of the service life of the whole bridge, but also comprises the repeated utilization of local segments, which not only meets the requirements of bridge demolition due to development, but also meets the requirements of remote reconstruction due to function or environment adjustment, and the like, therefore, the design concept of the whole service life of the existing bridge is expanded from the whole to the partial sections, the whole service life of a component level or a material level is realized, the utilization efficiency of materials is greatly improved, and the waste of environment-influenced resources is reduced.

The method aims to solve the problem that in the process of large economic and social development of China, the speed of partial bridge construction is not consistent with that of future urban development, so that the urban development is influenced by partial bridge construction, the partial bridge construction does not need to be dismantled in the service life, and therefore great economic waste and environmental resource damage are brought.

The application provides the following technical scheme:

a design method suitable for repeated disassembly and assembly of a bridge is characterized in that a prefabricated and assembled beam bridge is adopted as an integral structure; wherein the content of the first and second substances,

the upper structure of the longitudinal bridge is prefabricated by adopting bridge sections, and each bridge section is formed by connecting a special prestressed inhaul cable and a special joint;

the transverse bridge capping beam structure 21 is prefabricated by traditional segment processing and is also formed by fixing a traditional prestressed inhaul cable and a special joint of the application; the vertical pier column structure 22 is formed by prefabricating a cylindrical section and connecting another special joint; the splicing of the segments in the vertical direction is also achieved only with conventional techniques.

The bridge sections, the bent caps and the pier stud structures are key stressed sections in the bridge, the design is that assembly type construction is adopted, inverted disassembly construction can be carried out on the bridge sections, the bent caps and the pier stud structures under the condition of need, all the sections can be disassembled, and the sections after disassembly can be assembled and connected again for use. Compared with the upper structure of a longitudinal bridge, the two bridge structures, namely the capping beam and the pier stud, have small component size and mass, so that the prestressed stay cable only needs to be realized by using the conventional technology, and the prestressed stay cable needs to be fixed and connected by using the joint designed by the application for repeated assembly and disassembly.

A repeatedly detachable brand-new bridge is characterized by comprising a detachable beam type bridge longitudinal structure, a bent cap structure and a pier structure, wherein the positions and the installation relationship of the detachable beam type bridge longitudinal structure, the bent cap structure and the pier structure are the same as those of a traditional bridge (shown in figure 1), and the repeatedly detachable beam type bridge is characterized in that the structures of the detachable beam type bridge longitudinal structure, the bent cap structure and the pier structure are designed as follows:

longitudinal structure of beam type bridge capable of being disassembled and assembled

The beam bridge assembled by prefabrication comprises bridge sections, a prestressed cable system and special joints; each bridge section is used as a stressed section and is connected through a prestressed short stay cable 6 and a special joint, and the whole bridge section is connected through a prestressed long stay cable 5. The prestressed cable system is designed into a detachable cable steering and fixing piece through an anchoring point, so that rapid steering and anchoring pieces, flexible disassembly and reassembly are realized; the special joint realizes the quick insertion, assembly, disassembly and re-assembly of the bridge sections.

Two, can repeat dismouting bridge bent cap structure

The device comprises a plurality of transverse bridge segments, prestressed cables and a connecting system; a plurality of transverse bridge segments are combined into a transverse bridge member; each transverse bridge-direction segment 101 is spliced in the transverse bridge direction and is combined into a transverse bridge-direction component by a plurality of transverse bridge-direction segments; the three longitudinal direction bridge-separating pieces 102 are spliced in the longitudinal direction of the bridge, the left and right pieces of the longitudinal direction bridge-separating pieces are symmetrical by taking a central piece in the longitudinal direction of the bridge, the shapes of the left and right pieces are matched with the shape of the transverse direction bridge-separating piece 101, and the transverse direction bridge-separating pieces are used for being stacked up and down; the three sub-pieces 102 are spliced in the bridge direction, and the left and right sub-pieces are connected with the central piece in the bridge direction by adopting a connecting rod. Each transverse bridge segment 101 is spliced in the transverse bridge direction by adopting a connector mechanism, the connectors are connected by using a bolt type and are formed by a plurality of connectors which can be repeatedly inserted and utilized, and the connectors can be embedded or welded and are respectively arranged on the cross sections of two sides of two contact components.

Three, can repeat dismouting cylinder type pier structure

Comprises a plurality of stress segments 301 and special connecting segments 302 connected between the stress segments; the contact end sides between the adjacent upper and lower stress sections 301 are designed with matched concave-convex structures, so that the upper and lower stress sections are conveniently aligned when being hoisted up and down, and are stable and reliable after being static; the connecting head 302 is designed to be symmetrical up and down and comprises an upper connecting mechanism, a lower connecting mechanism and a middle limiting mechanism; the upper end of the upper connecting mechanism structure is fixed with the adjacent stressed segment 301 above the upper connecting mechanism structure, and the lower end of the lower connecting mechanism structure is fixed with the adjacent stressed segment 301 below the lower connecting mechanism structure; the two connecting mechanisms are combined up and down to form a cross section; and the middle limiting mechanism radially restrains the crossed interval.

Compared with the prior art, the technical scheme provided by the application is taken as an example and is not limited, and has the following beneficial effects: the method is not only suitable for concrete beam bridges and the same stressed structures thereof, such as bent caps and the like, but also suitable for steel-concrete composite structure beam bridges and completely suitable for steel structure beam bridges. The structure provided by the application provides a brand new thought for protecting resources or environment in China, reducing material and economic waste and realizing the repeated use of bridges, has great economic and social benefits and has great popularization and application values.

Drawings

FIG. 1: the basic components of a conventional prefabricated assembled bridge in the prior art (illustrated in the figure only in the form of a girder of section 23 of a box girder, other section girders or flexural elements not shown in the figure)

FIG. 2: this application girder structure constitutes sketch map

FIG. 3: this application girder structure meets punishment to separate and arranges the sketch map

FIG. 4: the present application relates to a joint connection

FIG. 5: sectional schematic view of internally-detachable inhaul cable and mounting structure

FIG. 6: anchoring state of anchoring point and turning point (6 a), exploded state diagram (6 b)

FIG. 7 is a schematic view of the transverse bridging segment connection of the capping beam of the present application

FIG. 8 is a schematic view of the bridge-wise segmental connection of the bent cap of the present application

FIG. 9 is a schematic view of the overall structure of the circular pier of the present application

FIG. 10 is a schematic view of the arrangement of the circular pier structure at the butt joint position

FIG. 11 is an exploded view of the circular pier coupling connection of the present application

Detailed Description

Under the idea of detachable and reusable method, the following three aspects of longitudinal main beam structure, capping beam and lower pier structure are introduced by 3 local parts respectively, so that the technical scheme is comprehensively known.

EXAMPLE 1 longitudinal Structure

The longitudinal girder structure of the detachable girder type bridge adopts a prefabricated and assembled girder type bridge, and comprises bridge sections, a prestressed cable system and special joints; each bridge section is used as a stressed section and is connected through a prestressed short stay cable 6 and a special joint, and the whole bridge section is connected through a prestressed long stay cable 5.

First part, bridge section

The bridge sections can be disassembled into small sections for assembly, and can also be installed in a hoisting mode after being butted on the ground of a whole span structure or a construction platform, and the corresponding connection is only aimed at the butt joint of the sections under the condition of meeting the specific construction requirements.

The bridge sections are repeatable reinforced concrete structures, steel structures or existing beam type bridge sections formed by steel-concrete composite structures, such as box-shaped, I-shaped, T-shaped, U-shaped, rectangular and other section forms, and are divided into different section forms according to a certain rule, so that prefabrication construction is facilitated.

The bridge segment, itself structurally, needs to meet design specification conditions, which are prior art specifications.

Second part, prestressed guy system

The system comprises a full-length prestressed cable 5, short connecting cables 6 among sections, anchoring points and crossing or steering nodes.

The bridge segment is designed and installed with prestressed cable anchoring, crossing or steering node or structure, so that the structure can realize prestressed application and prestressed cable replacement. Particularly, the anchoring cables on the segments need to meet the stress of the segments in the installation and removal processes, so that the corresponding cables need to be stressed and flexible disassembly and reassembly are guaranteed, the cables 5 are mainly stressed integrally and arranged according to the construction process of assembling the bridge according to the conventional segments, the cables 6 are mainly stressed in the installation and disassembly of the segments and are stressed together with the cables 5 after the bridge is formed.

As shown in fig. 2, the prestressed cable comprises a full-length prestressed cable 5 and an intersegment short connecting cable 6; the design of the cables is configured based on the external prestress design concept of the bridge, but the difference is that the cable is required to be disassembled, so that the anchoring point mechanism and the steering node of the cable are different from the existing design. The main reason is to ensure the need of reinstallation after the removal of the anchor point mechanism and the need of cable hanging or steering, so the anchor point mechanism with flexible arrangement function and the steering device designed by the application need to be disclosed.

The prefabricated segment is longitudinally assembled by a plurality of prefabricated segments, and each segment can be integrally formed by a connecting cable 6 between the segments in addition to a conventional full-length prestressed cable 5. Besides the long cable 5 and the segment cable 6 are required to meet the stress of the structure during installation and use, the segment cable 6 has more functions of repeated removal and installation.

Meanwhile, the tensioning and arrangement of the cable after replacement during the structure reinstallation are considered, so that the crossing and connection between the cable and the segment are also considered during the design. The full-length prestressed cable 5 realizes the anchoring of the end point at the top through the anchoring point, and the steering point arranged in the segment range in the long distance is used for assisting the steering of the full-length prestressed cable to adapt to the design trend of the whole bridge.

The prestressed inhaul cable can be flexibly unloaded and replaced according to the bridge dismantling requirement by means of the anchoring and steering devices preset on the top plate, the bottom plate and the web plate of the beam body on the basis of ensuring the standard requirement of the durability of the bridge.

The anchoring point mechanism is specifically realized as shown in fig. 6: the anchoring point mechanism 9 comprises a body, an embedded part 93 and a fastener 94, wherein the body is installed on the embedded part 93, and the anchoring point 9 is embedded into the segment through one end of the embedded part 93; the body comprises an upper clamping plate 91 and a lower clamping plate 92, the upper clamping plate and the lower clamping plate are mutually combined to form a connecting hole 95 through which a cable end penetrates, and the free end of a fastener 94 is screwed and fastened by the fastener 94.

The anchoring point mechanism 9 is designed as a detachable cable steering and fixing piece, namely, an anchor piece for realizing rapid steering.

Third part, connection system between adjacent segments

Besides the arrangement of the prestressed cables, the bridge segment needs to be connected with the adjacent segments.

For this reason, the present application is named as a connection joint mechanism.

The connecting joint mechanism consists of a plurality of connecting joints, and the connecting joints can be pre-embedded or welded with prefabricated sections (reinforced concrete and steel structures).

The positions of the embedded or welded joints are used as key structural parts for shearing resistance, bending resistance and even torsion resistance of the structure according to the stress requirement of the structure, so that the embedded or welded joints can be arranged at the positions of the sections according to the requirement, wherein the positions mainly comprise a tension area with larger positive and negative bending moments and a region with larger main stress of the section, and the embedded or welded joints are common knowledge of structural mechanics of ordinary technicians in the field.

The joint mechanism comprises a female head, a male head and a pin bolt piece; the sub-head and the female head are respectively embedded and fixed with the bridge segment and are distributed at the cross section according to the stress requirement; the pin bolt pieces are the male and female connecting pieces, the pin bolt pieces on the same section can be multiple according to the stress requirement, the pin bolt pieces coaxially penetrate through the male and female connecting pieces, and the position distribution is determined according to the stress requirement of the beam section. The specific structural design is as follows:

the joint mechanism comprises a plurality of joints distributed between adjacent sections, and each joint is distributed on the cross section of the end part of the adjacent section;

each joint is divided into a sub-joint 3 (4 b in fig. 4) and a female joint 2 (4 a in fig. 4), which are respectively pre-buried or welded to adjacent sections (4 a in fig. 4 is pre-buried in the left section in fig. 3, and 4b in fig. 4 is pre-buried in the right section in fig. 3), and the two sub-joint and the female joint have certain positioning and guiding mechanisms to realize flexible structure butt joint. The structure is realized as follows: the female joint 2 comprises a body and feet 22, and the female joint 2 is embedded into the segment through the feet 22 or welded at the end part of the segment; the body comprises an external base plate 211 and a flat introducing cavity 212 embedded in the segment, wherein an inlet 213 is formed in the plane of the base plate 211, and a through hole 214 is formed in the side of the introducing cavity 212. The sub-joint 3 comprises a body and feet 32, and the sub-joint 3 is embedded into the segment through the feet 32 or welded at the end part of the segment; the body comprises an external substrate 311 and a flat tongue 312 inserted into the flat introducing cavity 212, wherein the flat tongue 312 is arranged on the plane of the substrate 311, and a through hole 314 is arranged on the side part of the flat tongue 312.

As shown in fig. 3, the joint mechanism further comprises a pin 4 and through holes distributed in adjacent segments. Each sub-joint 3 is inserted into the corresponding female joint 2, and after the assembly reaches a preset position, a pin bolt 4 is inserted into a through hole in the segment for realizing the integral fixation of the joint mechanism.

The above segments, joints and cotters, when the segments are removed and moved: according to the requirement, the pin bolt can be pulled out, the joint can be separated, and the prestress can be released after the pin bolt is unloaded when needed.

The joint mechanism and the bridge section are fixed, embedded and welded enough to meet safety standards, and the joint mechanism and the bridge section can be completely realized by the traditional prior art and only serve as a statement in the specification, so that the stress after assembly, the operation during disassembly and assembly and the installation during re-assembly are ensured.

All components of the application can be assembled again in different places except the prestressed inhaul cable which is updated as required, and secondary use of the beam bridge is realized.

EXAMPLE 2 Cap Beam Structure

A design and construction method of a bridge bent cap capable of being repeatedly disassembled and assembled is characterized in that the bent cap is divided into a plurality of sections in the transverse bridge direction according to the characteristics of sectional hoisting weight and stress, and is divided into a plurality of pieces in the bridge direction according to the characteristics of the lap joint and force transmission part of a main beam and the bent cap, and then the pieces are processed and manufactured in a prefabricated mode; the joints of the adjacent sections or sheets adopt detachable and reloadable special joints to realize quick connection, and the integral connection in the transverse bridge direction is realized through the prestress setting of the transverse bridge capable of being tensioned repeatedly; the connection of adjacent plates along the bridge direction is realized through the pull rod or the receiving and sending along the bridge direction, so that the complete capping beam is formed to realize the integral stress.

A repeatedly detachable bridge bent cap structure is characterized by comprising a plurality of transverse bridge direction sections, transverse bridge direction fragments, prestressed cables and a connecting system.

Firstly, a plurality of transverse bridge segments are combined into a transverse bridge member;

as shown in fig. 7, the individual transverse bridge segments 101 are spliced together in the transverse bridge direction.

Secondly, combining a plurality of forward-bridge direction fragments into a forward-bridge direction component;

as shown in fig. 8, the three forward-to-bridge segments 102 are spliced together in the forward-to-bridge direction, the left and right segments are symmetrical in the forward-to-bridge direction by taking the central segment as a center, and the shapes of the left and right segments are matched with the shapes of the transverse-to-bridge segments 101 for up-and-down stacking installation.

Third, prestressed cable

The transverse bridge segment and the longitudinal bridge segment can be connected by special joints, and can be provided with a prestressed cable pipeline 103 or a pore channel 105 which can be repeatedly penetrated and tensioned according to the stress requirement, and the prestressed cable pipeline can be penetrated again or connected by a pull rod 104 when being reassembled after being disassembled. How to arrange the prestressed cable is to meet the design specification and safety specification conditions according to the self requirements of each structure of the bent cap, and the prestressed cable belongs to the prior art specification. Prestressed cable sets up and is under construction, refers to the norm, is not the innovation point of this application.

Fourthly, a connecting system existing between transverse bridge-direction segments and between forward bridge-direction fragments

Besides the arrangement of the prestressed cables, the transverse bridge segment and the transverse bridge segment need to be connected with adjacent segments.

Therefore, the special connecting mechanism is named as a special connecting mechanism and comprises a connecting rod and a special joint mechanism, the connecting rod and the special joint mechanism can be disassembled according to needs without damaging the main body of the bent cap structure, and the structure is still ensured to be stressed after being assembled again according to needs after being disassembled.

As shown in fig. 2, three forward-bridge split sheets 102 are spliced together in the forward-bridge direction, and the left and right sheets are connected with the central sheet by a connecting rod in the forward-bridge direction.

Each transverse bridge segment 101 is spliced in the transverse bridge direction by adopting a connecting joint mechanism, the joints are connected by using a bolt type and are formed by a plurality of connecting joints, the connecting joints can be pre-embedded or welded with prefabricated segments (reinforced concrete and steel structures), and the positions of the pre-embedded or welded joints are respectively arranged on two sides of a section according to the stress requirement of the structure and mainly overcoming the bending moment and the shearing force requirement (common knowledge of structural mechanics possessed by ordinary technicians in the field).

The joints are respectively pre-buried or welded between the adjacent transverse bridge-direction segments 101, and the transverse bridge-direction structures are stacked and installed on the contact surface between the forward bridge-direction structures. That is, there are joints between the cross-bridge segment 101 and the forward-bridge segment 102. The primary and secondary connectors are provided with a certain positioning guide mechanism to realize flexible butt joint of the structure. The primary and secondary connectors in the connectors are fixed by bolts after being assembled to reach a preset position.

The joint mechanism comprises a female head, a male head and a pin bolt piece; the sub-head and the main head are respectively embedded and fixed with the segments or the fragments and are regularly distributed at the cross section according to the stress requirement; the pin bolt pieces are the male and female connecting pieces, the pin bolt pieces on the same section can be multiple according to the stress requirement, the pin bolt pieces coaxially penetrate through the male and female connecting pieces, and the position distribution is determined according to the stress requirement of the beam section. The specific structural design is as follows:

the joints are distributed over the end sections of adjacent segments 101 and the contact sections between the transverse bridging segments 101 and the forward bridging segments 102.

Each joint is divided into a sub-joint 3 (4 b in fig. 4) and a female joint 2 (4 a in fig. 4), which are respectively pre-buried or welded to adjacent sections or sub-sheets (4 a in fig. 4 is pre-buried in the left section in fig. 3, and 4b in fig. 4 is pre-buried in the right section in fig. 3), and the two sub-joints have certain positioning and guiding mechanisms to realize flexible structure butt joint. The structure is realized as follows: the female joint 2 comprises a body and feet 22, and the female joint 2 is embedded into the segment (slicing) through the feet 22 or welded at the end part of the segment (slicing); the body comprises an external base plate 211 and a flat introducing cavity 212 embedded in the segment, wherein an inlet 213 is formed in the plane of the base plate 211, and a through hole 214 is formed in the side of the introducing cavity 212. The sub-joint 3 comprises a body and feet 32, and the sub-joint 3 is embedded into the segment through the feet 32 or welded at the end part of the segment; the body comprises an external substrate 311 and a flat tongue 312 inserted into the flat introducing cavity 212, wherein the flat tongue 312 is arranged on the plane of the substrate 311, and a through hole 314 is arranged on the side part of the flat tongue 312.

As shown in fig. 3, the joint mechanism further comprises a pin 4 and through holes distributed in adjacent segments. Each sub-joint 3 is inserted into the corresponding female joint 2, and after the assembly reaches a preset position, a pin bolt 4 is inserted into a through hole in the segment for realizing the integral fixation of the joint mechanism.

The above segment 101, segment 102, female joint 2, male joint 3 and pin 4, when the segment 101 or segment 102 is removed and moved: according to the requirement, the pin bolt can be pulled out, the joint can be separated, and the prestress can be released after the pin bolt is unloaded when needed.

The joints are respectively arranged on the members at two sides of each section and each segment, the connecting pieces are sufficiently fixed, embedded and welded with the concrete sections at two sides of the joints so as to meet safety standards, the operation and the installation during the assembling and disassembling can be completely realized by the traditional prior art, and the stress after the assembling, the operation during the assembling and the installation during the assembling can be ensured only by using the statement in the specification. The setting requirements and how to implement these security aspects are the specifications and common knowledge in the technical field of the present application. How to fix, pre-embed and weld to ensure the stress safety after assembly is not the content that needs to be disclosed in detail in the technical scheme of the application, and the prior art is utilized to reach the industry standard.

All components of the application can be assembled again in different places except the prestressed inhaul cable which is updated as required, and secondary use of the beam bridge is realized.

When in design, segment assembling construction is adopted, inverted disassembly can be carried out, each segment or segment can be disassembled, and the segments can be assembled, connected and used again under the condition of need.

Connecting rods 104 capable of repeatedly penetrating and tensioning are arranged along the bridge direction, and the connecting rods 104 can be used for connection again when the bridge is reassembled after being disassembled.

The segments and the segments are in vivo, in vitro and in vitro

In the transverse bridge direction, a prestressed cable (not shown in the figure) can be installed repeatedly or; a connecting rod 104 capable of repeatedly passing through and stretching is arranged along the bridge direction.

When the segments 101 and the segments 102 are detached as required, the separation can be realized only by cutting off the transverse bridge prestressed cables and connecting rods along the bridge surface and removing the connecting joint bolts.

When the used segments and the fragments are reassembled and assembled according to needs, the original letter joints and the bolts are only needed to be reused for connecting the adjacent segments or the fragments, and the prestressed cables or the connecting rods are reinstalled in the original pore channels 103 and are tensioned and fixed, so that the reassembling and the secondary use of the bent cap can be realized.

According to the integral structure, the transverse bridge is divided into a plurality of sections according to the stress and hoisting requirements during construction, and the transverse bridge is divided into a plurality of pieces along the bridge direction; the transverse bridge adopts detachable joints in the axial direction, and quick assembly and disassembly are realized by combining the prestress setting capable of repeatedly tensioning; the detachable joint and the pull rod are adopted along the bridge direction, so that the detachable joint and the pull rod can be assembled and disassembled along the bridge direction.

Embodiment 3 bridge pier Structure

A design method for a cylindrical pier structure capable of being repeatedly disassembled and assembled is characterized in that the whole structure adopts a segmented prefabrication mode and is formed by assembling a plurality of prefabricated segments;

the joint section adopts a special joint which can be lapped and disassembled, and the stressed sections are quickly connected to complete 'normal installation'; otherwise, the 'reverse disassembly' is carried out to realize the disassembly of each segment, and the integral stress is not influenced;

can be assembled again in different places according to requirements, and secondary use of the cylindrical beam pier is realized.

As shown in fig. 9, 10 and 11, the corresponding cylinder pier structure capable of being repeatedly disassembled and assembled obtained by the design method is characterized by comprising a plurality of stress segments 301 and special connecting segments 302 connected between the stress segments;

the contact end sides between the adjacent upper and lower stress sections 301 are designed with matched concave-convex structures, so that the upper and lower stress sections are conveniently aligned when being hoisted up and down, and are stable and reliable after being static; the connecting head 302 is designed to be symmetrical up and down and comprises an upper connecting mechanism, a lower connecting mechanism and a middle limiting mechanism; the connection mechanism comprises pre-buried anchor bolts 307, steel plates 303 and bolt plates 304, wherein the bolt plates 304 are uniformly and densely distributed and fixed on the lower surfaces of the steel plates 303, the anchor bolts 307 are uniformly and densely distributed and fixed on the upper surfaces of the fixed steel plates 303, and the other ends of the anchor bolts 307 are welded on the steel bars in the upper section 301; the middle waist part of the latch plate 304 is designed with a groove structure; the bolt plates 304 distributed on the upper connecting mechanism and the lower connecting mechanism are staggered with each other; the lower connecting mechanism and the upper connecting mechanism are consistent in structure, the two connecting mechanisms are combined up and down and then positioned on the upper bolt plates 304 of different connecting mechanisms to enter the same interval, and the groove structure at the waist part of the two connecting mechanisms forms a circular groove with a gap; the middle limiting mechanism comprises two flange retaining rings 305 and a pre-tightening bolt 306, the two flange retaining rings 305 are embraced and locked in the annular groove of the bolt plate, and radial constraint is achieved through the pre-tightening bolt 306.

As shown in fig. 11, the special joint is a connecting joint segment of a bridge pier, and the structure of the special joint is designed to be circularly symmetrical, and comprises an upper connecting mechanism, a lower connecting mechanism and a middle limiting mechanism;

the connection mechanism comprises pre-buried anchor bolts 7, a steel plate 3 and bolt plates 4, wherein the bolt plates 4 are uniformly and densely distributed and fixed below the steel plate 3, the anchor bolts 7 are uniformly and densely distributed and fixed above the fixed steel plate 3, and the other end of each anchor bolt 7 is welded on the steel bar in the upper section 1; the middle waist part of the bolt plate 4 is designed with a groove structure;

the bolt plates 4 distributed on the upper connecting mechanism and the lower connecting mechanism are staggered with each other;

the lower connecting mechanism and the upper connecting mechanism are consistent in structure, the two connecting mechanisms are combined up and down and then positioned on the bolt plates 4 on different connecting mechanisms to enter the same interval, and the groove structure at the waist part of the two connecting mechanisms forms a circular groove with a gap;

the middle limiting mechanism comprises two flange retaining rings 5 and a pre-tightening bolt 6, the two flange retaining rings 5 are embraced and locked in the annular groove of the plug pin plate, and radial constraint is realized through the pre-tightening bolt 6.

The integral structure of the application adopts a segmented prefabricated and assembled structure and is formed by connecting stressed sections through special joints; the construction of segmental assembling type is adopted during design, but the 'reverse disassembly' can be realized under the condition of allowing partial micro damage under the condition of requirement, the disassembly of each segmental is realized, and the segmental assembling connection and the use can be realized again under the condition of requirement.

The segments for assembling need to be considered to be connected with adjacent segments, and the connecting joints can be embedded or welded with prefabricated segments. The position of the used embedded or welded joint needs to ensure the comprehensive stress of the bending shear of the structure according to the stress requirement of the structure, particularly the anti-seismic stress requirement, which can be completely realized by the prior art, and is not the content required to be disclosed in detail in the technical scheme of the application.

This application cylindrical pier core stress area adopts the concave-convex design, core area pressure-bearing when guaranteeing the construction, connects simultaneously and has enough fixed, pre-buried, welding with concrete section (each stress segment 1 promptly), operation when guaranteeing atress, the dismouting after assembling, the installation when assembling again. The setting requirements and how to implement these security aspects are the specifications and common knowledge in the technical field of the present application. How to fix, pre-embed and weld to ensure the stress safety after assembly is not the content that needs to be disclosed in detail in the technical scheme of the application, and the prior art is utilized to reach the industry standard.

It should be noted that, at present, the building industrialization is greatly promoted in China, and the assembly construction is easy to be disassembled to realize the assembly construction in the house construction due to the fact that the number of the components is the same, the size and the weight are small, but the assembly construction is only directed at the permanent construction, and the problem of repeated folding and assembling is not considered. On the other hand, the building is a three-dimensional structure, the length, width and height proportions of all components are close to each other, the structural stress characteristics can be decomposed into components such as beams, columns and plates to realize targeted design, and the size and weight of the building have no difficulty in splicing construction. Compared with the building construction, what show to the structural style of the subject beam type bridge of this application is the member characteristic, and length direction is not at same magnitude of a magnitude than the cross-sectional dimension, and the load that uses is mostly removal heavy load in addition, and the moment of flexure and the shear force characteristic that it shows also are different from the building construction completely, and the open-air environment of whereabouts also is different from the building construction structure, and geographical environment also puts forward different requirements to the construction mode. Although the detachable concept proposed by the present application is partially similar to the building construction field, such as steel structure and wood structure, based on the above differences, the present application cannot be used for reference in the building construction field in terms of the structure, the structure design method, and the connector design.

It should be understood that the embodiments and illustrations described herein are merely box girder examples and are intended to merely illustrate and not limit the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (1)

1. The utility model provides a repeatedly dismouting bridge, includes dismantled and assembled beam type bridge longitudinal structure, bent cap structure, pier structure, and their position and installation are the same with traditional bridge, its characterized in that, their structural design is:

longitudinal structure of beam type bridge capable of being disassembled and assembled

The beam bridge assembled by prefabrication comprises bridge sections, a prestressed cable system and special joints; each bridge segment is used as a stressed segment and is connected through a prestressed short stay cable (6) and a special joint, and meanwhile, the whole bridge segment is connected through a prestressed long stay cable (5), and a prestressed cable system body is designed into a detachable stay cable steering and fixing piece through an anchoring point of the prestressed cable system body, so that the rapid steering and anchoring, the detachment and the reassembly are realized; the special joint realizes the quick insertion, assembly, disassembly and re-assembly of the bridge sections;

two, can repeat dismouting bridge bent cap structure

The device comprises a plurality of transverse bridge segments, prestressed cables and a connecting system; a plurality of transverse bridge segments are combined into a transverse bridge member; each transverse bridge-direction segment (101) is spliced in the transverse bridge direction and is combined into a transverse bridge-direction component by a plurality of transverse bridge-direction segments; the bridge comprises three along-bridge direction segments (102), a connecting system, a connecting rod and a special joint mechanism, wherein the three along-bridge direction segments (102) are spliced together along the bridge direction, the left and right segments are symmetrical along the bridge direction by taking a central segment as the along-bridge direction, the shapes of the left and right segments are matched with the shape of the transverse bridge direction segment (101) and are used for being installed in an up-and-down overlapping manner; the left and right transverse bridge-direction segments (101) are spliced in the transverse bridge direction by adopting a connecting joint mechanism, the joints are connected by using a bolt type and are formed by a plurality of connecting joints which can be repeatedly spliced and utilized, and the connecting joints can be pre-embedded or welded and are respectively arranged on the cross sections of two sides of two contact components;

three, can repeat dismouting cylinder type pier structure

Comprises a plurality of stressed segments (301) and special connecting segments (302) connected between the segments; the contact end sides between the adjacent upper and lower stress sections (301) are designed with matched concave-convex structures, so that the upper and lower stress sections are convenient to align when being hoisted up and down, and are stable and reliable after being static; the connecting head section (302) is designed to be vertically symmetrical and comprises an upper connecting mechanism, a lower connecting mechanism and a middle limiting mechanism; the upper end of the upper connecting mechanism structure is fixed with the adjacent stressed segment (301) above the upper connecting mechanism structure, and the lower end of the lower connecting mechanism structure is fixed with the adjacent stressed segment (301) below the lower connecting mechanism structure; the two connecting mechanisms are combined up and down to form a cross section; and the middle limiting mechanism radially restrains the crossed interval.

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