CN113512945B - Variable-rigidity splicing device and method for road bridge and road tunnel connecting section - Google Patents
Variable-rigidity splicing device and method for road bridge and road tunnel connecting section Download PDFInfo
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- CN113512945B CN113512945B CN202110423373.XA CN202110423373A CN113512945B CN 113512945 B CN113512945 B CN 113512945B CN 202110423373 A CN202110423373 A CN 202110423373A CN 113512945 B CN113512945 B CN 113512945B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a variable stiffness splicing device for road and bridge and road and tunnel connection sections, which comprises equal-height beams paved in parallel below a roadbed at the connection sections and variable stiffness equal-height members vertically arranged below the equal-height beams, wherein the equal-height beams are used for providing horizontal transition between the roadbed at the connection sections and a bridge deck or a tunnel surface so as to keep the running stability of a running object. The invention uses the equal-height component to strengthen the resistance strength support of the equal-height girder to offset the sedimentation difference effect of the roadbed and the bridge deck or the tunnel surface at the connecting section, so that the roadbed and the bridge deck or the tunnel surface at the connecting section keep the same horizontal height, thereby the equal-height Liang Weisuo provides horizontal transition for the roadbed and the bridge deck or the tunnel surface at the connecting section to keep the running stability of a running object, and uses the equal-height girder to carry out multidirectional unloading on the roadbed at the connecting section in a plurality of directions of effectively conducting the inward pulling force generated by the running pressure of the running object along the upright post, thereby avoiding the roadbed from breaking.
Description
Technical Field
The invention relates to the technical field of road bridge construction, in particular to a variable-rigidity splicing device and method for road bridge and road tunnel connection sections.
Background
The roadbed at the junction of the road bridge and the road tunnel, the bridge deck and the tunnel surface have inconsistent sedimentation degree due to different construction materials, so that the roadbed, the bridge deck and the tunnel surface have step jump degree, and jump is generated when a driving vehicle passes, and the main hazard comprises: (1) The driver and the passengers feel uncomfortable, the mood is not fast and easy to fatigue, the loaded goods are easy to damage, serious car jump can cause traffic accidents such as car turning and rear-end collision, the safety of people, cars and property is threatened, and life and property losses are caused. (2) The horizontal and vertical impact forces generated by the jumping vehicles can further damage the road surface, the roadbed and the bridge structure, increase maintenance cost and management difficulty, and reduce road performance. (3) The impact force during jumping can generate adverse counter force to the vehicle, so that the vibration and mechanical abrasion of the vehicle and the abrasion of tires are increased, the oil consumption is increased, the service life of the vehicle is shortened, and the transportation cost is increased. (4) Vibration and noise during jumping can cause noise pollution to passengers of a driver and residents on two sides of a highway, which is unfavorable for physical and mental health of people and affects normal work and life of the people.
Among the prior art, CN201921857246.5 discloses a prevent long and short stake reinforcement roadbed structure of highway bridgehead car jump, this long and short stake reinforcement roadbed structure is including setting up the long and short stake roadbed processing structure in the foundation of subsidence changeover portion and locating the reinforcement roadbed reinforced structure of foundation and roadbed juncture of subsidence changeover portion, long and short stake roadbed processing structure including being the multiseriate variable stiffness stake that the certain distance was evenly laid, the length of each variable stiffness stake apart from bridge floor section reduces gradually, reinforcement roadbed reinforced structure include multilayer geogrid, have the elimination bridgehead and jump the feel of car, reduce the damage to the vehicle, reduce cost advantage such as.
Although the above-mentioned prior art can solve the bridge head and jump the feel to a certain extent, still there are some defects, including subsidence difference carries out indiscriminate response, under the less circumstances of subsidence difference, need not to use reinforced structure to carry out subsidence difference degree adjustment, original basic pile body structure can maintain the equal altitude stationarity of road bed and bridge floor, and indiscriminate response can lead to the reinforced structure too early use probably to lead to road bed and bridge floor to produce reverse subsidence difference degree, lead to the road bed to be higher than the bridge floor, still there is reverse jump the phenomenon, simultaneously when the linkage segment road bed bears great driving pressure, can produce the inward instantaneous pulling force of subtend between the both ends of linkage segment, and the pulling force between independent variable stiffness stake can't effectively follow the road base and unload the power, thereby easily make the road bed produce horizontal fracture phenomenon, cause the dangerous of driving.
Disclosure of Invention
The invention aims to provide a variable stiffness splicing device for road and bridge and road tunnel connection sections, which solves the technical problems that in the prior art, settlement difference is indiscriminately responded, so that the roadbed and bridge deck can generate reverse settlement difference degree due to early use of a reinforcing structure, a reverse jump phenomenon still exists, meanwhile, when the roadbed of the connection section bears larger driving pressure, an inward instant pulling force can be generated between two ends of the connection section, and the pulling force between independent variable stiffness piles can not effectively unload force along the roadbed, so that the roadbed is easy to generate horizontal fracture phenomenon, and the driving danger is caused.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
the utility model provides a variable rigidity splicing apparatus of road bridge and road tunnel linkage segment, is including parallel laying the contour beam of linkage segment department roadbed below to and the variable rigidity contour member of perpendicular setting below the contour beam, the contour beam is used for the linkage segment department roadbed and bridge floor or tunnel face provide horizontal transition in order to keep the stability of traveling object, the contour member is used for strengthening the resistance strength support of equivalent contour beam in order to offset the subsidence differential effect of linkage segment department roadbed and bridge floor or tunnel face makes linkage segment department roadbed and bridge floor or tunnel face keep horizontal contour.
As a preferable scheme of the invention, the equal-height beam is horizontally paved on the lower surface of the roadbed at the connecting section, and two ends of the equal-height beam are respectively flush with two end surfaces of the roadbed at the connecting section.
As a preferred scheme of the invention, the contour member comprises a plurality of longitudinal upright posts and reinforcing longitudinal beams arranged inside the longitudinal upright posts, the longitudinal upright posts are arranged in a vertical array at the contour beams, the longitudinal upright posts are used for providing basic resistance strength support for the contour beams so as to offset the low sedimentation differential effect of the roadbed and the bridge deck or the tunnel face at the connecting section, and the reinforcing longitudinal beams are used for transiently reinforcing the resistance strength of the upright posts so that the upright posts provide enhanced resistance strength support for the contour beams so as to offset the high sedimentation differential effect of the roadbed and the bridge deck or the tunnel face at the connecting section.
As a preferable scheme of the invention, the reinforced longitudinal beam comprises a first longitudinal beam section, a second longitudinal beam section and a third longitudinal beam section, wherein the inner diameter widths of the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are sequentially reduced and sequentially connected through a strip-shaped elastic member, two end parts of the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are respectively provided with one end part and two end parts, one end part of the first longitudinal beam section is fixedly connected with the upright post, two end parts of the first longitudinal beam section are sleeved at one end part of the second longitudinal beam section, two end parts of the second longitudinal beam section are sleeved at one end part of the third longitudinal beam section, two end parts of the third longitudinal beam section are fixedly connected with the middle section of the elastic member, and the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are overlapped and connected in a layered shape under the anti-stretching elastic potential energy storage function of the elastic member, and are dispersedly connected under the anti-stretching elastic potential energy release function of the elastic member to form the longitudinal strip shape consistent with the upright post to strengthen the resistance strength of the upright post.
As a preferable scheme of the invention, a junction line of the roadbed at the connecting section and the bridge deck or the tunnel face is provided with a touch control for controlling elastic potential energy storage and energy release of elastic members in all the reinforcing longitudinal beams in a linkage way, the touch control comprises a touch rigid rod paved at the junction line of the roadbed at the connecting section and the bridge deck or the tunnel face and a plurality of touch rigid lines movably connected with the touch rigid rod, two ends of the touch rigid rod are respectively fixedly embedded at the lower surface of the roadbed at the connecting section and the lower surface of the bridge deck or the tunnel face at the connecting section, the touch rigid lines are in one-to-one correspondence with the reinforcing longitudinal beams, one end part of each touch rigid line is movably connected with the touch rigid rod, the other end part of each touch rigid line is fixedly connected with one end part of each elastic member positioned at the upper end part of each upright post, one end part of each elastic member positioned at the lower end part of each upright post is fixedly connected with the lower end part of each upright post, and each touch rigid rod is used for monitoring the differential degree of sedimentation between the roadbed at the connecting section and the bridge deck or the tunnel face and is broken under a high differential state of sedimentation degree so that all the elastic members can synchronously release potential energy.
As a preferable scheme of the invention, elastic limit protrusions are arranged at both ends of the first longitudinal beam section and both ends of the second longitudinal beam section, limit holes matched with the limit protrusions are arranged at one end of the second longitudinal beam section and one end of the third longitudinal beam section, and the limit holes and the limit protrusions are separated and combined under the action of elastic potential energy storage and elastic potential energy release of the elastic member to form the layered shape and the strip shape.
As a preferable mode of the invention, a through hole for connecting the touch sense rigid wire with the elastic member is formed in the upright post, and the touch sense rigid wire passes through the through hole and enters the upright post to be fixedly connected with the elastic member.
As a preferable scheme of the invention, the connection parts of the upright posts and the equal-height beams are fixedly connected through bolts.
As a preferable scheme of the invention, the invention provides a rigidity changing method of the rigidity changing splicing device of the road bridge and road tunnel connecting section, which comprises the following steps:
s1, splicing the equal-height beams and the equal-height components into a variable-rigidity splicing device of a road bridge and a road tunnel connecting section in a basic rigidity mode, and installing the variable-rigidity splicing device at the connecting section;
step S2, the touch control is used for monitoring the sedimentation difference degree at the connecting section, and the contour member is controlled in a linkage mode from a basic rigidity mode to a reinforced rigidity mode, and specifically:
if the sedimentation difference degree is low, the touch rigid rod is not broken, and the upright post is only used for supporting the resistance strength of the foundation of the equivalent girder;
if the settlement difference degree is high, the touch sense rigid rod is broken, the touch sense rigid line is synchronously separated from the touch sense rigid rod, and all elastic members synchronously release energy through elastic potential energy, so that the reinforcing longitudinal beam forms a longitudinal strip shape to perform transient reinforcing on the upright post, the basic rigidity shape is changed into the reinforcing rigidity shape, and then the upright post supports the resistance strength of the equivalent-high beam.
In a preferred embodiment of the present invention, the basic stiffness mode refers to that the touch stiffness rod performs a rigid stretching on the elastic member through the touch stiffness wire, the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a layered mode under the action of stretch-resistant elastic potential energy storage of the elastic member, the stiffness reinforcing mode refers to that the touch stiffness rod disappears through the rigid stretching of the touch stiffness wire on the elastic member, and the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a dispersed mode to form a strip shape under the action of stretch-resistant elastic potential energy release of the elastic member.
Compared with the prior art, the invention has the following beneficial effects:
the invention uses the equal-height component to strengthen the resistance strength support of the equal-height girder so as to offset the settlement difference effect of the roadbed and the bridge deck or the tunnel surface at the connecting section, so that the roadbed and the bridge deck or the tunnel surface at the connecting section keep the same horizontal height, thereby the equal-height Liang Weisuo provides horizontal transition to keep the running stability of a running object, and uses the equal-height girder to effectively conduct the inward pulling force generated by the running pressure of the running object on the roadbed at the connecting section along the upright posts to carry out multidirectional unloading force along a plurality of directions of the roadbed, thereby avoiding roadbed fracture, simultaneously carrying out differential response according to the settlement difference degree of the roadbed, the bridge deck and the tunnel surface, using the resistance strength support of the foundation under the condition of low settlement difference degree, and using the strengthened resistance strength support under the condition of high settlement difference degree to offset the occurrence of reverse jump phenomenon under the condition of settlement difference effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a schematic diagram of a basic rigidity morphological structure of a rigidity-variable splicing device provided by an embodiment of the invention;
FIG. 2 is a schematic cross-sectional structure diagram of a basic stiffness form of a variable stiffness splicing device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a rigidity-reinforced morphological structure of a rigidity-variable splicing device according to an embodiment of the present invention.
Reference numerals in the drawings are respectively as follows:
1-an isocenter beam; 2-a contour member; 3-an elastic member; 4-touch sensitive control; 5-limiting protrusions; 6, a limiting hole; 7-through holes; 8-roadbed; 9-bridge deck or tunnel face;
201-a longitudinal upright; 202-reinforcing the longitudinal beams;
2021-first stringer section; 2022-a second stringer joint; 2023-third stringer section;
401-a tactile rigid bar; 402-tactile stiffness lines.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, the invention provides a variable stiffness splicing device for road and bridge and road tunnel connection sections, which comprises a constant-height beam 1 paved in parallel below a roadbed at the connection section and a variable stiffness constant-height member 2 vertically arranged below the constant-height beam 1, wherein the constant-height beam 1 is used for providing horizontal transition for the roadbed at the connection section and a bridge deck or a tunnel surface so as to keep the running stability of a running object, and the constant-height member 2 is used for reinforcing the resistance strength support of the constant-height beam 1 so as to counteract the sedimentation difference effect of the roadbed at the connection section and the bridge deck or the tunnel surface so as to keep the roadbed at the connection section and the bridge deck or the tunnel surface at the same level.
The settlement difference effect is that road bridge junction includes bridge floor and road bed two kinds of building material, and the settlement degree of road bed and bridge floor is different, can lead to in the long-term vehicle use that supplies that runs, layering phenomenon appears in the juncture to lead to the juncture to appear the ladder degree of jump, can produce the jump danger when the vehicle that runs through, the equal-height component 2 offsets the settlement difference effect of junction department road bed and bridge floor or tunnel face, can make the settlement degree between road bed and bridge floor or the tunnel face maintain in certain equilibrium limit, avoids the ladder degree of juncture and then avoids the jump danger of vehicle that runs.
The equal-height beam 1 is horizontally paved on the lower surface of the roadbed at the connecting section, and two ends of the equal-height beam 1 are respectively flush with two end surfaces of the roadbed at the connecting section.
The horizontal rigidity of the roadbed can be effectively strengthened by horizontally arranging the contour beam 1, so that potholes and fracture phenomena are avoided due to the differential effect of settlement inside the roadbed, the roadbed is kept at the same height, the running vehicles are guaranteed to stably run on the roadbed, the pressure of the running vehicles on the roadbed is uniformly dispersed into the upright posts 201 through the contour beam 1, multidirectional unloading force is effectively conducted to the roadbed along the upright posts 201 in multiple directions, object pulling force between two sections of the roadbed at a connecting section is prevented from being concentrated at a certain point, the roadbed is broken, and the safety and stability of the roadbed are improved.
The contour member 2 comprises a plurality of longitudinal upright posts 201 and reinforcing longitudinal beams 202 arranged inside the longitudinal upright posts 201, the plurality of longitudinal upright posts 201 are arranged in a vertical array at the contour beam 1, the longitudinal upright posts 201 are used for providing basic resistance strength support for the contour beam 1 so as to offset the low sedimentation differential effect of the roadbed and the bridge deck or the tunnel face at the connecting section, and the reinforcing longitudinal beams 202 are used for transiently reinforcing the resistance strength of the upright posts 201 so that the upright posts 201 provide enhanced resistance strength support for the contour beam 1 so as to offset the high sedimentation differential effect of the roadbed and the bridge deck or the tunnel face at the connecting section.
The reinforcement longitudinal beam 202 comprises a first longitudinal beam section 2021, a second longitudinal beam section 2022 and a third longitudinal beam section 2023, wherein the inner diameter widths of the first longitudinal beam section 2021, the second longitudinal beam section 2022 and the third longitudinal beam section 2023 are sequentially reduced and sequentially connected through the strip-shaped elastic member 3, two ends of the first longitudinal beam section 2021, the second longitudinal beam section 2022 and the third longitudinal beam section 2023 are respectively provided with one end and two end, one end of the first longitudinal beam section 2021 is fixedly connected with the upright column 201, two ends of the first longitudinal beam section 2021 are sleeved at one end of the second longitudinal beam section 2022, two ends of the second longitudinal beam section 2022 are sleeved at one end of the third longitudinal beam section 2023, two ends of the third longitudinal beam section 2023 are fixedly connected with the middle section of the elastic member 3, the first longitudinal beam section 2021, the second longitudinal beam section 2022 and the third longitudinal beam section 2023 are sleeved at the stretching-resistant elastic energy storage function of the elastic member 3, and the stretching-resistant elastic potential energy release function of the elastic member 3 is dispersed and connected at the longitudinal strip-shaped form consistent with the upright column 201, and the resistance strength of the upright column 201 is enhanced.
As shown in fig. 1 and 2, specifically, when the elastic member 3 performs elastic potential energy storage, the elastic member 3 is rigidly connected with the touch stiffness line 402, and the third girder segment 2023 drives the second girder segment 2022 to be fixed at the position of the first girder segment 2021 at the upper end of the upright 201 under the action of the tensile force of the elastic member 3 at the upper end of the upright 201 and the tensile force of the lower end of the upright 201, so that the first girder segment 2021, the second girder segment 2022 and the third girder segment 2023 are in a stacked connection in a layered form, and therefore the upright 201 maintains a basic stiffness form to perform basic resistance strength support on the girder 1.
As shown in fig. 3, when the elastic member 3 releases elastic potential energy, the connection between the elastic member 3 and the touch stiffness line 402 is released, the tensile force of the third girder segment 2023 at the upper end of the upright 201 disappears, the second girder segment 2022 and the third girder segment 2023 axially move toward the lower end of the upright 201 under the tensile force of the elastic member 3 between the lower end of the upright 201 and the third girder segment 2023, and the limiting hole 6 at one end of the second girder segment 2022 and one end of the third girder segment 2023 are matched and combined with the limiting protrusions 5 at the two ends of the first girder segment 2021 and the two ends of the second girder segment 2022, so that the first girder segment 2021, the second girder segment 2022 and the third girder segment 2023 are connected in a dispersed manner to form a rigid strip shape, and the strip shape is located at the inner diameter of the upright 201, thereby playing a role of further reinforcing rigidity to the upright 201, and forming a reinforced resistance strength support for the girder 1 with a reinforced rigidity shape.
The road bed at the junction and the bridge floor or tunnel face juncture are provided with touch control pieces 4 for controlling elastic potential energy storage and energy release of elastic members 3 in all reinforcing stringers 202 in a linkage way, the touch control pieces 4 comprise touch rigid rods 401 paved at the junction and the bridge floor or tunnel face juncture, and a plurality of touch rigid lines 402 movably connected with the touch rigid rods 401, two ends of each touch rigid rod 401 are respectively fixedly buried at the junction and the bridge floor or tunnel face lower surface at the junction, the touch rigid lines 402 are in one-to-one correspondence with the reinforcing stringers 202, one end of each touch rigid line 402 is movably connected with the touch rigid rods 401, the other end of each touch rigid line 402 is fixedly connected with one end of each elastic member 3 positioned at the upper end of each upright 201, one end of each elastic member 3 is fixedly connected with the lower end of each upright 201, each touch rigid rod 401 is used for monitoring the sedimentation difference degree of the road bed at the junction and the bridge floor or tunnel face and is broken under a high sedimentation degree state so as to release the touch rigid lines 402 to enable all elastic members 3 to synchronously perform elastic potential energy release.
The upright 201 is provided with a through hole 7 for connecting the touch sense rigid line 402 with the elastic member 3, and the touch sense rigid line 402 passes through the through hole 7 and enters the upright 201 to be fixedly connected with the elastic member 3.
As shown in fig. 1 and 2, specifically, the two ends of the touch rigid rod 401 are respectively and independently acted by the roadbed and the bridge deck or the tunnel deck, and the larger the settlement difference degree generated between the roadbed and the bridge deck or the tunnel deck is, the larger the step jump degree formed between the roadbed and the bridge deck or the tunnel deck is, the larger the bending degree generated by the stress on the two ends of the touch rigid rod 401 is, once the rigidity limit of the touch rigid rod 401 is exceeded, the touch rigid rod 401 is broken, so that the touch rigid line 402 connected to the touch rigid rod 401 is released, and the fixed form of elastic potential energy storage of the elastic member 3 is damaged, so that the elastic potential energy release energy of the elastic member 3 is converted into the movement form.
As shown in fig. 3, when the touch rigid rod 401 is not broken, the influence of the step jump between the roadbed and the bridge deck or the tunnel surface on the running stability of the vehicle is negligible, so that the settlement difference degree generated between the roadbed and the bridge deck or the tunnel surface is low, and the settlement difference degree intervention can be avoided; the breaking of the rigid rod 401 indicates that the gradient between the roadbed and the bridge deck or the tunnel surface has a non-negligible effect on the stability of the vehicle running, so that the differential settlement between the roadbed and the bridge deck or the tunnel surface is high, and the differential settlement intervention is necessary.
The connection between the upright post 201 and the equal-height beam 1 is fixedly connected through bolts.
Based on the structure of the variable-rigidity splicing device of the road bridge and the road tunnel connecting section, the invention provides a variable-rigidity method, which comprises the following steps:
s1, splicing the equal-height beams and the equal-height components into a variable-rigidity splicing device of a road bridge and a road tunnel connecting section in a basic rigidity mode, and installing the variable-rigidity splicing device at the connecting section;
step S2, the touch control is used for monitoring the sedimentation difference degree at the connecting section, and the contour member is controlled in a linkage mode from a basic rigidity mode to a reinforced rigidity mode, and specifically:
if the sedimentation difference degree is low, the touch rigid rod is not broken, and the upright post is only used for supporting the resistance strength of the foundation of the equivalent girder;
if the settlement difference degree is high, the touch sense rigid rod is broken, the touch sense rigid line is synchronously separated from the touch sense rigid rod, and all elastic members synchronously release energy through elastic potential energy, so that the reinforcing longitudinal beam forms a longitudinal strip shape to perform transient reinforcing on the upright post, the basic rigidity shape is changed into the reinforcing rigidity shape, and then the upright post supports the resistance strength of the equivalent-high beam.
The basic rigidity mode refers to the fact that the touch rigidity rod is used for carrying out rigid stretching on the elastic member through the touch rigidity wire, the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a layered mode in a stacked mode under the stretching-resistant elastic potential energy storage effect of the elastic member, the rigidity reinforcing mode refers to the fact that the touch rigidity rod is used for carrying out rigid stretching on the elastic member through the touch rigidity wire and disappears, and the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a dispersed mode to form a strip mode under the stretching-resistant elastic potential energy release effect of the elastic member.
The invention uses the equal-height component to strengthen the resistance strength support of the equal-height girder so as to offset the settlement difference effect of the roadbed and the bridge deck or the tunnel surface at the connecting section, so that the roadbed and the bridge deck or the tunnel surface at the connecting section keep the same horizontal height, thereby the equal-height Liang Weisuo provides horizontal transition to keep the running stability of a running object, and uses the equal-height girder to effectively conduct the inward pulling force generated by the running pressure of the running object on the roadbed at the connecting section along the upright posts to carry out multidirectional unloading force along a plurality of directions of the roadbed, thereby avoiding roadbed fracture, simultaneously carrying out differential response according to the settlement difference degree of the roadbed, the bridge deck and the tunnel surface, using the resistance strength support of the foundation under the condition of low settlement difference degree, and using the strengthened resistance strength support under the condition of high settlement difference degree to offset the occurrence of reverse jump phenomenon under the condition of settlement difference effect.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.
Claims (5)
1. The utility model provides a road bridge and road tunnel linkage segment's variable rigidity splicing apparatus which characterized in that: the road bed and bridge floor or tunnel surface combined type high-strength bridge comprises equal-height beams (1) which are paved below the road bed at the connecting section in parallel and variable-rigidity equal-height members (2) which are vertically arranged below the equal-height beams (1), wherein the equal-height beams (1) are used for providing horizontal transition for the road bed at the connecting section and the bridge floor or tunnel surface so as to keep the running stability of a running object, and the equal-height members (2) are used for reinforcing the resistance strength support of the equal-height beams (1) so as to counteract the sedimentation difference effect of the road bed at the connecting section and the bridge floor or tunnel surface, so that the road bed at the connecting section and the bridge floor or tunnel surface keep horizontal equal height;
the equal-height beam (1) is horizontally paved on the lower surface of the roadbed at the connecting section, and two ends of the equal-height beam (1) are respectively flush with two end surfaces of the roadbed at the connecting section; the contour member (2) comprises a plurality of longitudinal upright posts (201) and reinforcing longitudinal beams (202) arranged inside the longitudinal upright posts (201), wherein the longitudinal upright posts (201) are vertically arranged in an array at the contour beam (1), the longitudinal upright posts (201) are used for providing basic resistance strength support for the contour beam (1) so as to offset the low sedimentation difference effect of roadbed and bridge deck or tunnel surface at the connecting section, the reinforcing longitudinal beams (202) are used for transiently reinforcing the resistance strength of the upright posts so that the longitudinal upright posts (201) provide enhanced resistance strength support for the contour beam (1) so as to offset the high sedimentation difference effect of roadbed and bridge deck or tunnel surface at the connecting section;
the reinforcement longitudinal beam (202) comprises a first longitudinal beam section (2021), a second longitudinal beam section (2022) and a third longitudinal beam section (2023) which are sequentially reduced in inner diameter width and sequentially connected through a strip-shaped elastic member (3), two ends of the first longitudinal beam section (2021), the second longitudinal beam section (2022) and the third longitudinal beam section (2023) are respectively one end and two end, one end of the first longitudinal beam section (2021) is fixedly connected with the longitudinal upright post (201), two end parts of the first longitudinal beam section (2021) are sleeved at one end of the second longitudinal beam section (2022), two end parts of the second longitudinal beam section (2022) are sleeved at one end part of the third longitudinal beam section (2023), two end parts of the third longitudinal beam section (2023) are fixedly connected with the middle section of the elastic member (3), and the first longitudinal beam section (2021), the second longitudinal beam section (2022) and the third longitudinal beam section (2023) are connected with the elastic member (201) in a layered and stacked form under the action of tensile potential energy resistance, and the elastic force resistance of the elastic member is strengthened;
the method comprises the steps that a junction line of a roadbed and a bridge floor or a tunnel surface at the connecting section is provided with touch control pieces (4) for controlling elastic potential energy storage and energy release of elastic members (3) in all reinforcing longitudinal beams (202) in a linkage mode, each touch control piece (4) comprises a touch rigid rod (401) paved at the junction line of the roadbed and the bridge floor or the tunnel surface at the connecting section and a plurality of touch rigid lines (402) movably connected with the touch rigid rods (401), two ends of each touch rigid rod (401) are respectively fixedly embedded in the lower surface of the roadbed at the connecting section and the lower surface of the bridge floor or the tunnel surface at the connecting section, one end of each touch rigid line (402) is movably connected with each touch rigid rod (401), the other end of each touch rigid line (402) is fixedly connected with one end of each elastic member (3) located at the upper end of a longitudinal upright post (201), one end of each elastic member (3) located at the lower end of the longitudinal upright post (201) is fixedly buried in the lower surface of the bridge floor or the lower surface, and the elastic members are fixedly connected with each other in a synchronous potential energy storage mode, and the difference between the elastic members (201) and the elastic members are released, and the difference between the touch rigid lines and the touch rigid lines (201) are detected;
elastic limit protrusions (5) are arranged at the two ends of the first longitudinal beam section (2021) and the two ends of the second longitudinal beam section (2022), limit holes (6) matched with the limit protrusions (5) are formed at one end of the second longitudinal beam section (2022) and one end of the third longitudinal beam section (2023), and the limit holes (6) and the limit protrusions (5) are separated and combined under the elastic potential energy storage and the elastic potential energy release effects of the elastic member (3) to form a layered shape and a strip shape;
the elastic member (3) releases elastic potential energy, so that the connection relation between the elastic member (3) and the touch stiffness line (402) is relieved, the tensile force of the upper end part of the longitudinal upright (201) of the third longitudinal beam section (2023) disappears, the second longitudinal beam section (2022) and the third longitudinal beam section (2023) axially move towards the lower end part of the longitudinal upright (201) under the action of the tensile force of the elastic member (3) between the lower end part of the longitudinal upright (201) and the third longitudinal beam section (2023), the limiting holes (6) of the one end part of the second longitudinal beam section (2022) and the one end part of the third longitudinal beam section (2023) are matched and combined with the limiting protrusions (5) of the two end parts of the first longitudinal beam section (2021) and the two end parts of the second longitudinal beam section (2022), the first longitudinal beam section (2021), the second longitudinal beam section (2022) and the third longitudinal beam section (2023) are connected in a dispersing mode to form a strip-shaped form, the strip-shaped form is located at the inner diameter of the longitudinal upright (201), and further strengthen the rigidity, and form the high-strength support form and the high-strength girder (1).
2. The variable-rigidity splicing device of road bridge and road tunnel connecting sections according to claim 1, characterized in that through holes (7) for connecting the touch sense rigid wires (402) with the elastic members (3) are formed in the longitudinal upright posts (201), and the touch sense rigid wires (402) penetrate through the through holes (7) and enter the longitudinal upright posts (201) to be fixedly connected with the elastic members (3).
3. The variable stiffness splicing device of road bridge and road tunnel connection section according to claim 2, characterized in that the connection of the longitudinal upright post (201) and the contour beam (1) is fixedly connected by bolts.
4. A method of varying stiffness of a variable stiffness splicing device of road bridge and road tunnel connection sections according to any of claims 1-3, comprising the steps of:
s1, splicing the equal-height beams and the equal-height components into a variable-rigidity splicing device of a road bridge and a road tunnel connecting section in a basic rigidity mode, and installing the variable-rigidity splicing device at the connecting section;
step S2, the touch control is used for monitoring the sedimentation difference degree at the connecting section, and the contour member is controlled in a linkage mode from a basic rigidity mode to a reinforced rigidity mode, and specifically:
if the sedimentation difference degree is low, the touch rigid rod is not broken, and the longitudinal upright post is only used for supporting the resistance strength of the foundation of the equivalent girder;
if the settlement difference degree is high, the touch sense rigid rod is broken, the touch sense rigid line is synchronously separated from the touch sense rigid rod, and all elastic members synchronously release energy through elastic potential energy, so that the reinforcing longitudinal beam forms a longitudinal strip shape to carry out transient reinforcing on the upright post, the basic rigidity shape is changed into the reinforcing rigidity shape, and then the upright post carries out reinforcing resistance strength support on the equivalent high beam.
5. The method according to claim 4, wherein the basic stiffness mode is that the touch stiffness rod performs rigid stretching on the elastic member through the touch stiffness wire, the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a layered mode under the action of stretching-resistant elastic potential energy storage of the elastic member, the stiffness reinforcing mode is that the touch stiffness rod performs rigid stretching on the elastic member through the touch stiffness wire and disappears, and the first longitudinal beam section, the second longitudinal beam section and the third longitudinal beam section are connected in a dispersed mode to form a strip mode under the action of stretching-resistant elastic potential energy release of the elastic member.
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