CN111472303A - Middle pier anti-collision system and construction method - Google Patents
Middle pier anti-collision system and construction method Download PDFInfo
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- CN111472303A CN111472303A CN202010340018.1A CN202010340018A CN111472303A CN 111472303 A CN111472303 A CN 111472303A CN 202010340018 A CN202010340018 A CN 202010340018A CN 111472303 A CN111472303 A CN 111472303A
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- pier
- guardrail
- collision
- wall
- precast concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
Abstract
The invention relates to a middle pier anti-collision system and a construction method, aiming at different types of pier column structures, different anti-collision measures are respectively adopted, and for rectangular piers, a complete isolation concept is adopted for protection to arrange an isolated flexible anti-collision system; for the cylindrical pier, an attached flexible anti-collision system is adopted; when the large-size bridge pier is limited by space and cannot be provided with flexible anti-collision facilities, a reinforced guardrail anti-collision system is adopted; the pier column groups are dense, and when the anti-collision protection measure cannot be independently carried out on each pier column, the middle pier is adopted to prefabricate and assemble the whole wall type anti-collision island. The invention relates to four anti-collision system structures, and also relates to a related construction method, which has better economic and technical benefits.
Description
Technical Field
The invention relates to the field of middle pier collision prevention, in particular to a middle pier collision prevention system and a construction method, which are suitable for pier collision prevention systems in various structural forms in expressways.
Background
The high-speed overpass mainly comprises a girder bridge, an arch bridge and an inclined leg rigid frame, wherein most of the girder bridge is provided with piers in a central separation zone, but no anti-collision measures are taken.
In recent years, with the rapid increase of automobile reserves, road traffic safety in China is not optimistic, traffic safety accidents caused by automobile collision with piers frequently occur, the piers collapse and the automobile is damaged and people die in serious cases, and irretrievable life and property losses are brought. Therefore, it is imperative to add anti-collision measures to the overpass pier.
In view of this, in order to reduce the collision degree of the vehicle to the pier and improve the safety, the invention of a simple and effective middle pier anti-collision system and a construction method is urgently needed.
Disclosure of Invention
The invention aims to provide a middle pier anti-collision system which comprises but is not limited to various structures such as an isolated flexible anti-collision system, an attached flexible anti-collision system, a reinforced guardrail anti-collision system, a middle pier prefabricated wall type anti-collision island and the like, is suitable for the anti-collision of rectangular piers, cylindrical piers, large-size piers and pier column groups respectively, and has better economic benefit.
In order to achieve any one of the above purposes, the invention provides a middle pier anti-collision system and a corresponding construction method thereof, wherein the construction method corresponds to a construction method of four structures, namely an isolated flexible anti-collision system, an attached flexible anti-collision system, a reinforced guardrail anti-collision system and a middle pier prefabricated wall type anti-collision island.
The invention has the following characteristics and beneficial effects:
(1) the invention aims at the rectangular pier to arrange an isolated flexible anti-collision system, which consists of anti-collision upright posts, horizontal anti-collision pipes and waveform guardrails, and can prevent collision from falling beyond the thousand miles so as to protect the pier.
(2) The invention aims at the cylindrical pier to arrange an attached flexible anti-collision system, an assembled annular foundation with a guide screw is pre-buried around the cylindrical pier, a bracket is fixed by the guide screw, and a unit type anti-collision block is installed in the bracket.
(3) According to the invention, a reinforced guardrail anti-collision system is arranged for a large-size pier, embedded prefabricated strip foundations are embedded in two sides of the large-size pier, a guide hole implanted type stand column is arranged on each strip foundation, a stand column longitudinal beam is longitudinally arranged on each stand column, and a K-shaped reinforcing support is transversely arranged on each stand column, so that a plurality of stand columns are connected into a whole, and the collision capacity is greatly enhanced.
(4) The invention aims at arranging a middle pier prefabricated integrated wall type anti-collision island in a pier column group, continuously arranging precast concrete wall type guardrails on two sides of the pier column group along the direction of a crane, fixing the wall type guardrails by embedded tie rods, sleeving the wall type guardrails on a connecting bottom plate, arranging wall type guardrail stiffening beams on the middle back of the wall type guardrail, and connecting the wall type guardrail stiffening beams together through the stiffening beam connecting screw rods, and has firm structure, good integrity and strong anti-collision capability.
Drawings
Fig. 1 is a plan view of an isolated flexible bumper system in a middle pier bumper system in an embodiment in accordance with the invention.
Fig. 2 is a vertical cross-sectional view of an isolated flexible bumper system in a middle pier bumper system in an embodiment in accordance with the invention.
FIG. 3 is an enlarged cross-sectional view of a crash column of the isolated flexible bumper system in a center pier bumper system in accordance with an embodiment of the present invention;
fig. 4 is a plan view of a crash column steel panel attachment for an isolated flexible bumper system in a center pier bumper system in accordance with an embodiment of the present invention.
Fig. 5 is a top view of the connection of an impact column, a horizontal impact tube and a horizontal reinforcing channel in an isolated flexible impact system in a middle pier impact system according to an embodiment of the invention.
Fig. 6 is an enlarged view of the flexible deflector bumper block of the isolated flexible bumper system in a middle pier bumper system in an embodiment in accordance with the invention.
Fig. 7 is a schematic structural view of an attached flexible bumper system in a middle pier bumper system according to an embodiment of the invention.
Fig. 8 is a top view of an attached flexible bumper system in a middle pier bumper system in an embodiment in accordance with the invention.
Fig. 9 is a schematic illustration of a reinforced barrier impact protection system in a middle pier impact protection system in accordance with an embodiment of the invention.
Fig. 10 is a top view of a reinforced barrier impact system in a middle pier impact system in an embodiment in accordance with the invention.
Fig. 11 is a detailed schematic view of the fixed a-node of the wave guardrail structure of the reinforced guardrail impact system in the middle pier impact system in accordance with one embodiment of the present invention.
Fig. 12 is a detailed schematic view of the fixed B-node of the wave guardrail structure of the reinforced guardrail impact protection system in the middle pier impact protection system in accordance with one embodiment of the present invention.
Fig. 13 is a schematic structural view of a pier-prefabricated assembled integral wall collision island in a middle pier collision avoidance system according to an embodiment of the invention.
Fig. 14 is a top view of a pier-prefabricated assembled integral wall impact island in a middle pier impact system in an embodiment of the invention.
Fig. 15 is an elevation view of a pier-prefabricated assembled integral wall impact island in a middle pier impact system in an embodiment of the invention.
Wherein: rectangular pier-1, anti-collision upright post-2, horizontal anti-collision pipe-3, corrugated guardrail-4, horizontal reinforcing channel steel-5, backstop bolt-6, flexible diversion anti-collision block-7, high-speed central separator-8, anti-block-9, connecting bolt-10, channel steel fixing steel belt-11, orifice through expansion area-12, fine aggregate concrete capping-13, orifice top through pressing plate 14, orifice top fixing steel plate-15, fixing soil nail-16, plain soil tamping-17, upright post periphery mortar layer-18, high polymer wear-resistant layer-19, self-recovery elastic layer-20, composite material energy consumption layer-21, energy-absorbing damping spring-22, energy-absorbing module fixing plate-23, energy-absorbing module fixing nut-24, cylindrical pier-25, corrugated guardrail-4, energy-absorbing layer-20, energy-absorbing module fixing plate-23, high-speed central separator, high-speed, Bump-26 of anti-collision block, 27 of separated lower bracket, 28 of unit anti-collision block, 29 of guide screw, 30 of backfill gravel, 31 of assembled annular foundation, 32 of annular column concrete cushion, 33 of separated upper bracket, 34 of annular suspended support galvanized anti-corrosion steel plate, 35 of steel plate planting hole, 36 of liana, 37 of large-size pier column, 38 of guide hole implanted column, 39 of K-shaped reinforcing support, 40 of K-shaped support middle partition beam, 41 of embedded prefabricated strip foundation, 42 of cast-in-place strip foundation beam, 43 of column assembly screw, 44 of column longitudinal beam, 45 of gasket, 46 of anti-theft compression nut, 47 of splicing bolt, 48 of anti-theft anti-loose nut, 49 of wave beam plate, 50 of beam gasket, 50 of anti-theft screw, 48 of anti-theft anti-loose nut, 49 of wave beam plate, 49 of beam gasket, 50 of beam, and, The anti-blocking block-51, the pier stud group-52, the central separation zone cut groove-53, the kerb-54, the planting soil filling cavity-55, the greening grass-planting-56, the precast concrete wall guardrail-57, the wall guardrail transverse prestress counter-pull rod-58, the wall guardrail gap-59, the wall guardrail stiffening beam-60, the stiffening beam connecting screw rod-61, the pier periphery gravel layer-62, the concrete cushion layer-63, the embedded prestress rod end-64, the embedded bolt rod-65, the wall guardrail connecting bottom plate-66 and the screw fixing cylinder-67.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
The middle pier anti-collision system provided by the invention can be divided into various structures such as an isolated flexible anti-collision system, an attached flexible anti-collision system, a reinforced guardrail anti-collision system, a middle pier prefabricated wall type anti-collision island and the like according to different application scenes, is respectively suitable for the anti-collision of rectangular piers, cylindrical piers, large-size piers and pier column groups, and correspondingly provides a construction method of the middle pier anti-collision system.
As shown in fig. 1 to 6, a structure of an isolated flexible bumper system and a corresponding construction method according to an embodiment of the present invention are shown.
The structure of the isolated flexible anti-collision system is as follows:
the flexible crashproof system of isolated sets up on highway central division strip 8, the flexible crashproof system of isolated includes rectangle mound 1, crashproof stand 2, horizontal crashproof pipe 3, wave form guardrail 4, the channel-section steel 5 is strengthened to the level, stopping bolt 6, flexible water conservancy diversion anticollision piece 7, prevent blockking 9, connecting bolt 10, the fixed steel band 11 of channel-section steel, the drill way link up enlarged region 12, the fine aggregate concrete capping 13, the hole top link up clamp plate 14, the fixed steel sheet 15 of hole top, fixed soil nail 16, plain soil tamp 17, stand periphery mortar layer 18, polymer wearing layer 19, self-resuming elastic layer 20, combined material energy consumption layer 21, energy-absorbing damping spring 22, energy-absorbing module fixed plate 23, energy-absorbing module fixation nut 24.
As shown in fig. 1 to 4, at least one rectangular pier 1 is provided on the central expressway separation strip 8, the collision preventing columns 2 are provided on both sides of the rectangular pier 1 and inserted into the rectangular pier 1, and the collision preventing columns 2 are arranged longitudinally in the driving direction (indicated by arrows in the drawings) of the expressway.
Specifically, grooving and hole leading are carried out on two sides of the rectangular pier 1 to form a slotted hole, the anti-collision upright post 2 is inserted into the slotted hole, and the pre-buried depth of the anti-collision upright post 2 is not less than 2 m.
The anti-collision upright post 2 and the rectangular pier 1 are provided with an upright post peripheral mortar layer 18 at the slot hole clearance position, the upper part of the slot hole is excavated to form an orifice through expanded region 12, and the orifice through expanded region 12 is positioned at the upper part of the upright post peripheral mortar layer 18; the anti-collision upright post 2 is sleeved with a hole top fixing steel plate 15 and a hole top through pressing plate 14, and the hole opening through expansion area 12 is internally poured with fine aggregate concrete 13 for capping.
As shown in fig. 1, 3 and 5, the horizontal anti-collision tube 3 is longitudinally disposed on the anti-collision column 2, the anti-blocking block 9 is fixed on the anti-collision column 2, specifically, the anti-blocking block 9 is fixed on the anti-collision column 2 by using the connecting bolt 10, the wave-shaped guardrail 4 is disposed on the anti-blocking block 9, and at this time, the anti-collision column 2, the horizontal anti-collision tube 3 and the wave-shaped guardrail 4 jointly form an isolated anti-collision structure which is longitudinally disposed along the driving direction.
As shown in fig. 1, fig. 3, fig. 5, fig. 6, horizontal reinforcement channel-section steel 5 is along transversely setting up on crashproof stand 2, horizontal reinforcement channel-section steel 5 is fixed on crashproof stand 2, on horizontal reinforcement channel-section steel 5 fixed energy-absorbing module fixed plate 23, particularly, horizontal reinforcement channel-section steel 5 is fixed through the fixed steel band 11 of channel-section steel on crashproof stand 2, strengthen through the fixed energy-absorbing module fixed plate 23 of stopping bolt 6 on horizontal channel-section steel 5, energy-absorbing module fixed plate 23 and then link together with flexible water conservancy diversion anticollision piece 7, thereby will flexible water conservancy diversion anticollision piece 7 sets up on horizontal reinforcement channel-section steel 5, constitutes along transverse arrangement's flexible energy-absorbing module.
As shown in fig. 6, the flexible diversion anti-collision block 7 is formed by sequentially stacking a high polymer wear-resistant layer 19, a self-recovery elastic layer 20 and a composite energy consumption layer 21, a plurality of energy-absorbing and shock-absorbing springs 22 are arranged on the inner wall of the flexible diversion anti-collision block 7, the energy-absorbing and shock-absorbing springs 22 are inserted in the composite energy consumption layer 21, an energy-absorbing module fixing plate 23 is arranged outside the flexible diversion anti-collision block 7, and the energy-absorbing module fixing plate 23 is connected with the flexible diversion anti-collision block 7 through an energy-absorbing module fixing nut 24.
The construction method comprises the following steps:
1) site cleaning: the method comprises the steps of sealing a road, cleaning the road surface, cleaning sundries which influence installation, such as grass, branches and stones in the installation area at the bottom of the rectangular pier 1, organizing a proper amount of labor personnel and small appliances, preparing and debugging the crack pouring vehicle and a matched road surface grooving machine, and ensuring normal operation of equipment.
2) And (3) measurement and paying-off: drawing out a construction control line at the periphery of the rectangular pier 1 according to the designed position, excavating a groove control line, installing elevation parts at the bottom of the rectangular pier 1, discharging a horizontal positioning line by using a line throwing instrument, and discharging position control lines such as a horizontal anti-collision pipe 3, a waveform guardrail 4, a horizontal reinforcing channel steel 5 and a flexible flow guide anti-collision block 7.
3) Excavating two sides of the pier column: according to the position of measuring and paying off, grooving and guiding holes are manually formed in the two sides of the rectangular pier 1, the excavation area is not too large, the rectangular pier 1 is not disturbed as much as possible, when the designed depth is excavated, the pit bottom is cleaned, leveled and tamped.
4) Installing an anti-collision stand column: and (3) inserting the prepared anti-collision stand column 2 into the slotted guide hole formed in the step (3), wherein the pre-buried depth of the anti-collision stand column 2 is not less than 2m, pouring the slotted holes around the anti-collision stand column 2 to form a stand column peripheral mortar layer 18 when the position and the depth of the inserted anti-collision stand column 2 meet the design requirements, and excavating and expanding the upper part of the slotted holes to form an orifice through expanded area 12.
5) Fixing a steel plate at the top of the mounting hole: and leveling the orifice through the expanded area 12, sleeving the hole top fixing steel plate 15 on the anti-collision upright post 2, and nailing the fixing soil nails 16 on the hole top fixing steel plate 15 so as to fix the hole top fixing steel plate 15 on the foundation.
6) The top of the mounting hole is communicated with the pressing plate: after the hole top fixing steel plate 15 is fixed, fine stone concrete 13 is poured around the hole top fixing steel plate 15 to a certain height, after the fine stone concrete 13 around the longitudinal row of anti-collision upright columns 2 is poured, hole top through pressing plates 14 are sleeved on the longitudinal row of anti-collision upright columns 2, the longitudinal row of anti-collision upright columns 2 are connected together, and then the fine stone concrete 13 is continuously poured on the hole top through pressing plates 14 for capping.
7) Installing a horizontal anti-collision pipe and horizontally reinforcing channel steel: along vertical welding level anticollision pipe 3 on anticollision stand 2, fixed level strengthens channel-section steel 5 on anticollision stand 2, can select to wear the fixed steel band 11 of channel-section steel on anticollision stand 2, utilizes the fixed level of the fixed steel band 11 of channel-section steel to strengthen channel-section steel 5, and the level is strengthened channel-section steel 5 and is fixed two-layerly from top to bottom.
8) Installing a flexible flow guide anti-collision block: install stopping bolt 6 at horizontal reinforcement channel-section steel 5, stopping bolt 6 fixes energy-absorbing module fixed plate 23 on horizontal reinforcement channel-section steel 5 to strengthen channel-section steel 5 with flexible water conservancy diversion anticollision piece 7 along transversely setting up, flexible water conservancy diversion anticollision piece 7 is outside to be fixed at energy-absorbing module fixed plate 23 through energy-absorbing module fixation nut 24, through constituting along transversely arranged flexible energy-absorbing anticollision structure.
9) Installing a waveform guardrail: utilize connecting bolt 10 to fix on crashproof stand 2 and prevent blockking 9, set up wave form guardrail 4 along the driving direction on preventing blockking 9, crashproof stand 2 constitutes the isolated anticollision structure along driving direction longitudinal arrangement jointly with horizontal crashproof pipe 3 and wave form guardrail 4.
10) Tamping plain soil: when all the anti-collision facilities are installed and checked to be qualified, plain soil is backfilled and tamped, and on-site packing cases, paper cloth, household garbage and other sundries are transported away from the site, so that the cleanness and tidiness of the highway are guaranteed.
As shown in fig. 7 to 8, a structure of an attached flexible impact prevention system suitable for providing an impact prevention system to a cylindrical pier and a corresponding construction method according to an embodiment of the present invention are shown.
The structure of the attached flexible anti-collision system is as follows:
the structure of an attached flexible collision avoidance system according to an embodiment of the present invention is shown, the attached flexible collision avoidance system includes a collision post 2, a horizontal collision avoidance pipe 3, a corrugated guardrail 4, a block 9, a connecting bolt 10, a soil tamper 17, a post periphery mortar layer 18, a cylindrical pier 25, a collision prevention block protrusion 26, a separate lower bracket 27, a unit collision prevention block 28, a guide screw 29, a backfill gravel 30, an assembled annular foundation 31, a ring post concrete cushion 32, a separate upper bracket 33, an annular suspension galvanized corrosion-resistant steel plate 34, a steel plate planting hole 35, and a vine 36.
The cylinder mound 25 inserts the plain soil is tamped 17, just excavate around the cylinder mound 25 and form an annular groove, the annular groove bottom forms one deck ring post concrete cushion 32, pre-buried assembled annular basis 31 on the ring post concrete cushion 32, pre-buried assembled annular basis 31 is hugged closely the cylinder mound 25, in addition, backfill rubble 30 on the pre-buried assembled annular basis 31, form the metalling.
In addition, the separate lower bracket 27 is embedded in the crushed stone layer, the lead screw 29 passes through the separate lower bracket 27 and is connected with the separate upper bracket 33 at the top, that is, a hole through which the lead screw 29 can pass is formed on the separate lower bracket 27, the lead screw 29 passes through the separate lower bracket 27 and is fixed on the fabricated ring-shaped foundation 31, and the top of the lead screw 29 is connected with the separate upper bracket 33.
It should be noted that the unit type crash block 28 using polymer composite material as the energy consumption main body is installed in the separated type upper and lower bracket (the combination of the separated type lower bracket 27 and the separated type upper bracket 23), the unit type crash block protrusion 26 is inserted into the separated type upper and lower bracket, and when the indexes such as the installation position and the smoothness of the unit type crash block 28 are confirmed, the separated type upper bracket 33 is fastened by the guide screw 29.
In addition, the unit type impact prevention blocks 28 abut on the cylindrical piers 25, and the unit type impact prevention block protrusions 26 protrude from both end sides of the unit type impact prevention blocks 28 and are inserted into the separate lower bracket (27) and the separate upper bracket (23).
Furthermore, annular suspension galvanized anti-corrosion steel plates 34 are arranged around the cylindrical pier 25, steel plate planting holes 35 are formed in the annular suspension steel plates 34 in the annular direction, plants 36 are planted in the steel plate planting holes 35, and the unit type anti-collision blocks 28 are covered by the plants 36, so that the phenomenon that the vehicle is dazzled by driving light at night is effectively reduced.
The annular suspension steel plate (34) is an annular suspension galvanized anti-corrosion steel plate, the plants (36) can be selected from plants capable of absorbing light, and in one embodiment of the invention, the plants (36) are selected from lianas.
In addition, the both sides of cylinder mound 25 vertically set up crashproof stand 2 along the driving direction, crashproof stand 2 inserts plain soil tamp 17, just form the slotted hole on the plain soil tamp 17 crashproof stand 2 with mortar layer 18 is pour all around to the slotted hole on the plain soil tamp 17, and horizontal crashproof pipe 3 is along vertically setting up on the crashproof stand 2, in addition on the crashproof stand 2 fixed block 9 of preventing, in some embodiments, utilize connecting bolt 10 fixed block 9 of preventing sets up wave form guardrail 4 on the block 9 of preventing, at this moment, crashproof stand 2 with horizontal crashproof pipe 3 reaches wave form guardrail 4 constitutes isolation anticollision structure jointly.
The construction method comprises the following steps:
1) site cleaning: sealing the road, cleaning the road surface, cleaning sundries affecting installation, such as grass, branches, stones and the like in the installation area at the bottom of the cylindrical pier 25, and leveling the ground within 40cm around the cylindrical pier 25; proper labor personnel and small-sized appliances are organized, and the crack pouring vehicle and the matched pavement grooving machine are prepared and debugged at the same time, so that the normal operation of the equipment is ensured.
2) And (3) measurement and paying-off: drawing construction control lines at the periphery of the cylindrical pier 25 according to the designed position, marking the position lines of the separated upper bracket control line, the separated lower bracket control line and the annular suspended galvanized anticorrosive steel plate 34 at the bottom of the cylindrical pier 25, drawing an excavation control line of the anti-collision upright post 2, and preparing a construction scheme and technical bottom-crossing work.
3) Excavating the periphery of the pier column: according to the position of measuring the unwrapping wire, adopt the manual work to carry out annular excavation around the cylinder mound 25, the excavation area should not be too big, does not disturb the cylinder mound 25 as far as possible and is preferred, when excavating to the design depth, clears up the bottom of a pit, and the bottom of a pit is leveled and tamped, then excavates along the driving direction to cylinder mound 25 both sides, when excavating to reach the design depth, clears up the bottom of a pit, and the leveling is tamped.
4) Landfill area connecting screw's assembled annular basis: pouring is carried out at the bottom of pits around the cylindrical pier 25 to form a ring column concrete cushion 32, an assembly type annular foundation 31 with a connecting screw rod is arranged on the ring column concrete cushion 32, wherein the assembly type annular foundation 31 is tightly attached to the cylindrical pier 25, the guide screw rod 29 is anchored on the assembly type annular foundation 31, when the embedded position of the assembly type annular foundation 31 is confirmed to be correct, broken stones 30 are backfilled to form a gravel layer, and the guide screw rod 29 extends out of the ground.
5) Installing a guide ring frame: the lower split bracket 27 is embedded in the backfill gravel 30, the elevation position of the lower split bracket 27 is controlled according to the mark of the measurement and the paying-off of the cylindrical pier 25, and a guide screw 29 passes through the lower split bracket 27 and is primarily connected with an upper split bracket 33 at the top of the lower split bracket 27.
6) Installing an anti-collision block: the protrusion 26 of the unit type impact prevention block 28 using the polymer composite material as the energy consumption main body is installed in the separated type upper and lower brackets (including the separated type upper bracket 33 and the separated type lower bracket 27), when the indexes such as the installation position and smoothness of the unit type impact prevention block 28 are confirmed to be correct, the position of the separated type upper bracket 33 is adjusted to meet the design requirement, and then the separated type upper bracket 33 is fastened by the guide screw 29.
7) Installing an anti-collision stand column: in the slot of the excavation that will prepare in advance crashproof stand 2 inserted, the pre-buried degree of depth of crashproof stand 2 is not less than 2m, when the exact position of crashproof stand 2 after inserting and degree of depth reach the designing requirement, pours mortar layer 18 to crashproof stand 2 slotted hole all around.
8) Installing a waveform guardrail: along vertical welding level anticollision pipe 3 on crashproof stand 2, utilize connecting bolt 10 fixed on crashproof stand 2 to prevent blockking 9, set up waveform guardrail 4 along the driving direction on preventing blockking 9, crashproof stand 2 constitutes the isolated anticollision structure along driving direction longitudinal arrangement jointly with horizontal anticollision pipe 3 and waveform guardrail 4.
9) Planting vine plants: the annular suspension galvanized anti-corrosion steel plate 34 is arranged around the column pier 25, the annular suspension galvanized anti-corrosion steel plate 34 adopts a separated structure, a steel plate planting hole 35 is welded on the annular suspension galvanized anti-corrosion steel plate 34 along the annular direction, a vine plant 36 is planted in the steel plate planting hole 35, and the vine plant 36 covers the unit type anti-collision block 28.
10) Backfilling plain soil: when all the anti-collision facilities are installed and checked to be qualified, plain soil is backfilled and tamped, and on-site packing cases, paper cloth, household garbage and other sundries are transported away from the site, so that the cleanness and tidiness of the highway are guaranteed.
As shown in fig. 9 to 12, the structure and corresponding construction method of the reinforced type collision avoidance system according to an embodiment of the present invention are shown, and the reinforced type collision avoidance system is suitable for providing protection to large-sized stone piers.
The reinforced anti-collision system has the following structure:
the anti-theft device comprises a corrugated guardrail 4, a plain soil tamping 17, a large-size pier column 37, a leading hole implanted type upright column 38, a K-shaped reinforcing support 39, a K-shaped supporting middle partition beam 40, an embedded type prefabricated strip foundation 41, a cast-in-place strip foundation beam 42, an upright column assembling screw 43, an upright column longitudinal beam 44, a gasket 45, an anti-theft compression nut 46, a splicing bolt 47, an anti-theft locknut 48, a corrugated beam plate 49, a beam gasket 50 and an anti-blocking block 51.
The large-size pier stud 37 is tamped in the soil tamping 17, grooves are dug in the driving direction (arrow direction in fig. 2) at two sides of the large-size pier stud 37, an embedded prefabricated strip foundation 41 is arranged in the grooves, the embedded prefabricated strip foundation 41 is longitudinally arranged along two sides of the large-size pier stud 37, and a hole is reserved in the embedded prefabricated strip foundation 41 for inserting the hole implanted type stand column 38.
And cast-in-place strip foundation beams 42 are arranged among the plurality of prefabricated strip foundations 41, and the embedded prefabricated strip foundations 41 are connected into a whole. After the embedded type prefabricated strip foundation 41 is fixed, the hole leading implanted type upright column 38 is inserted into the embedded type prefabricated strip foundation 41, the bottom of the hole leading implanted type upright column 38 is fixed by an upright column assembling screw 43, in addition, an upright column longitudinal beam 44 is welded at the upper part of the hole leading implanted type upright column 38 along the traveling direction, and the upright column longitudinal beam 44 connects the longitudinal row of hole leading implanted type upright columns 38 into a whole.
In other words, the through-hole implanted type columns 38 are inserted into the embedded type prefabricated bar foundation 41, specifically, the through-hole implanted type columns 38 are fixed in the embedded type prefabricated bar foundation 41 through the column assembly screws 43, the embedded type prefabricated bar foundations 41 are connected with each other into a whole through the bar foundation cross beam 42, column longitudinal beams 44 are welded on the through-hole implanted type columns 38 along the driving direction, and the column longitudinal beams 44 connect the longitudinal rows of the through-hole implanted type columns 38 into a whole.
Furthermore, K-shaped reinforcing struts 39 are transversely arranged on the hole-leading implanted columns 38 on the two sides of the large-size pier stud 37, the K-shaped reinforcing struts 39 are connected with the hole-leading implanted columns 38 on the two sides, the K-shaped reinforcing struts 39 are K-shaped and comprise a cross rod and two inclined oblique rods, the two oblique rods are respectively connected with the hole-leading implanted columns 38 on the two sides and the cross rod, the two ends of the cross rod are connected with the hole-leading implanted columns 38 on the two sides, K-shaped supporting middle partition beams 40 are arranged on the K-shaped reinforcing struts 39, and the K-shaped supporting middle partition beams 40 support the oblique rods on the two ends to increase the transverse impact resistance.
The waveform guard bar 4 is fixed on the through hole implanted column 38, wherein the waveform guard bar 4 comprises a waveform beam plate 49, and in an embodiment of the invention, the waveform guard bar is fixed by an anti-theft nut, the anti-theft nut mainly comprises a gasket 45, an anti-theft compression nut 46, a splicing bolt 47, an anti-theft anti-loose nut 48, a beam gasket 50, an anti-blocking block 51 and the like, and after the anti-collision structure is installed, backfilled plain soil is tamped.
Specifically, the beam gasket 50 is disposed on one side of the corrugated beam plate 49, in addition, the washer 45 is disposed on the other side of the corrugated beam plate 49, the anti-theft gland nut 46 and the splice bolt 47 are disposed on one side of the washer 45 to be matched and fixed with the corrugated beam plate 49, and the anti-theft locknut 48 is disposed between the anti-theft gland nut 46 and the splice bolt 47 to further play a role in fixing.
In other embodiments, the anti-snag 51 is disposed between the washer 45 and the corrugated beam panel 49.
The construction method comprises the following steps:
1) site cleaning: the method comprises the steps of sealing a road, cleaning the road surface, cleaning sundries which affect installation, such as grass, branches, stones and the like in an installation area at the bottom of the large-size pier stud 37, leveling the ground within 40cm around the large-size pier stud 37, organizing a proper amount of labor personnel and small appliances, preparing and debugging a crack pouring vehicle and a matched road surface grooving machine at the same time, and ensuring normal operation of equipment.
2) And (3) measurement and paying-off: drawing construction control lines at the periphery of the large-size pier stud 37 according to the designed position, marking the design position lines of the K-shaped reinforcing support 39, and preparing a construction scheme and performing technical intersection work.
3) Excavating two sides of the pier column: and (3) excavating grooves along the driving direction on two sides of the large-size pier stud 37 manually according to the position of the measurement paying-off, cleaning the pit bottom when the designed depth is excavated, leveling and compacting the pit bottom.
4) Pre-burying a prefabricated bar foundation: the embedded type prefabricated strip foundations 41 are embedded in the grooves in advance, the embedded type prefabricated strip foundations 41 are longitudinally arranged along two sides of the large-size pier stud 37, holes are reserved in the embedded type prefabricated strip foundations 41 and used for inserting the embedded type stand columns 38 of the lead holes, after the embedded type prefabricated strip foundations 41 are installed, the strip foundation cross beams 42 are cast in situ between the two opposite embedded type prefabricated strip foundations 41, the embedded type prefabricated strip foundations 41 are connected into a whole, and resistance is enhanced.
5) Installing a lead hole implanted type upright post: after the embedded type prefabricated strip foundation 41 is fixed, the hole leading implanted type upright column 38 is inserted into the embedded type prefabricated strip foundation 41, the bottom of the hole leading implanted type upright column 38 is fixed by an upright column assembling screw 43, an upright column longitudinal beam 44 is welded at the upper part of the hole leading implanted type upright column 38 along the traveling direction, and a longitudinal row of hole leading implanted type upright columns 38 are connected into a whole.
6) Installing a K-shaped reinforcing support: k-shaped reinforcing struts 39 are transversely arranged on the hole-leading implanted columns 38 on the two sides of the large-size pier column 37, and K-shaped supporting middle partition beams 40 are arranged on the K-shaped reinforcing struts 39, so that the transverse impact resistance is improved.
7) Installing a waveform guardrail: the waveform guardrail 4 is fixed on the through hole implanted column 38 by an anti-theft nut which mainly comprises a washer 45, an anti-theft compression nut 46, a splicing bolt 47, an anti-theft locknut 48, a beam gasket 50, an anti-blocking block 51 and the like.
8) Backfilling plain soil: when all the anti-collision facilities are installed and checked to be qualified, plain soil is backfilled and tamped, and on-site packing cases, paper cloth, household garbage and other sundries are transported away from the site, so that the cleanness and tidiness of the highway are guaranteed.
As shown in fig. 13 to 14, a structure of a middle pier prefabricated integrated wall type collision avoidance island adapted to provide protection to a pier stud group and a corresponding construction method according to an embodiment of the present invention are shown.
The structure of the middle pier prefabricated integral wall type anti-collision island is as follows:
the prefabricated concrete wall guardrail comprises pier groups 52, curb stones 54, a planting soil filling cavity 55, greening grass planting 56, a prefabricated concrete wall guardrail 57, a wall guardrail transverse prestress counter-pull rod 58, a wall guardrail gap 59, a wall guardrail reinforcing beam 60, a reinforcing beam connecting screw rod 61, a pier periphery gravel layer 62, a concrete cushion layer 63, a pre-embedded prestress rod end 64, a pre-embedded bolt rod 65, a wall guardrail connecting bottom plate 66, a screw rod fixing cylinder 67 and the like.
Excavating central partition excavated grooves 53 on both sides of the pier stud group 52 to form the central partition excavated grooves 53 on both sides of the pier stud group 52, casting a concrete pad 63 on the central partition excavated grooves 53, and embedding prestressed bar ends 64 with embedded tie bars 65 on the concrete pad 63, specifically, anchoring the embedded tie bars 65 on the prestressed bar ends 64. And backfilling the pier-surrounding gravel layer 62 on the prestressed rod end 64, paving a wall type guardrail connecting base plate 66 on the pier-surrounding gravel layer 62, arranging the precast concrete wall type guardrail 57 on the wall type guardrail connecting base plate 66, and inserting the embedded bolt 65 into the precast concrete wall type guardrail 57 after penetrating through the wall type guardrail connecting base plate 66.
Particularly, the lower part of the precast concrete wall guardrail 57 is sleeved in the wall guardrail connecting bottom plate 66, and the wall guardrail connecting bottom plate 66 connects a plurality of precast concrete wall guardrails 57 into a row, so that the structure is firm, the integrity is good, and the impact resistance is strong.
And a wall guardrail reinforcing beam 60 is arranged at the back of the precast concrete wall guardrail 57, wherein the wall guardrail reinforcing beam 60 is arranged corresponding to the pier stud group 52, at least one reinforcing beam connecting screw 61 penetrates through the wall guardrail reinforcing beam 60 to be connected with the precast concrete wall guardrail 57, and the precast concrete wall guardrails 57 are integrally connected, so that the connectivity of the adjacent precast concrete wall guardrails is enhanced.
In addition, as shown in fig. 3, a screw fixing cylinder 67 is provided at the boundary between the adjacent precast concrete wall guard rails 57, and the screw fixing cylinder 67 is sleeved on the beam connecting screw 61, so that the adjacent beam connecting screws 61 are sleeved together.
And the upper parts of the two opposite precast concrete wall type guardrails 57 are provided with wall type guardrail transverse prestress opposite pull rods 58, and the wall type guardrail transverse prestress opposite pull rods 58 are used for oppositely pulling the precast concrete wall type guardrails 57 at two sides so as to prevent the precast concrete wall type guardrails 57 from deviating.
It is worth mentioning that one wall type guardrail broken seam 59 is arranged at one end distance of the precast concrete wall type guardrail 57, specifically, the wall type guardrail broken seam 59 with the width of 2 centimeters is arranged at 4-6 meters of the interval, and asphalt is filled in the middle.
A planting soil filling cavity 55 is formed in the outer side of the precast concrete wall type guardrail 57, a curb 54 is arranged outside the planting soil filling cavity 55, and grass planting 56 is planted in the planting soil filling cavity 55 to form a green belt, so that aesthetic fatigue in the driving process is reduced, and the accident rate is reduced.
The construction method comprises the following steps:
1) site cleaning: sealing the road, cleaning the road surface, cleaning sundries affecting installation, such as grass, branches, stones and the like in the installation area at the bottom of the pier stud group 52, and leveling the ground within 40cm around the pier stud group 52; proper labor personnel and small-sized appliances are organized, and the crack pouring vehicle and the matched pavement grooving machine are prepared and debugged at the same time, so that the normal operation of the equipment is ensured.
2) And (3) measurement and paying-off: drawing construction control lines on two sides of the pier stud group 52 according to designed positions, drawing positioning lines of the central separation zone excavation groove 53 and mounting lines of the precast concrete wall type guardrail 57, and preparing a construction scheme and technical intersection work.
3) Excavating a central separation zone excavation groove: according to the position of the measurement paying-off, the center separation belt excavation grooves 53 are excavated on the two sides of the pier stud group 52 manually, the excavation area is not too large, and when the designed depth is excavated, the pit bottom is cleaned, leveled and tamped.
4) Pre-burying a prestressed rod end: pouring a concrete cushion 63 on the central partition belt excavation groove 53, embedding a prestressed rod end 64 on the concrete cushion 63 in advance, anchoring an embedded bolt 65 on the prestressed rod end 64, and backfilling a gravel layer 62 around the pier on the prestressed rod end 64 after the position of the prestressed rod end 64 is confirmed to be correct.
5) Installing a wall type guardrail connecting bottom plate: after the pier-surrounding gravel layer 62 is backfilled to reach the designed thickness, the pier-surrounding gravel layer 62 is leveled, a wall-type guardrail connecting base plate 66 is tiled on the upper surface of the pier-surrounding gravel layer 62, and the wall-type guardrail connecting base plate 66 penetrates through the embedded tie rods 65.
6) Installing the precast concrete wall type guardrail: the embedded tie rods 65 are inserted into the reserved holes of the precast concrete wall guardrails 57, the lower parts of the precast concrete wall guardrails 57 are sleeved on the wall guardrail connecting bottom plate 66, and the wall guardrail connecting bottom plate 66 connects a plurality of precast concrete wall guardrails 57 into a row.
7) Installing a reinforcing beam connecting screw: the back of the precast concrete wall guardrail 57 is provided with a wall guardrail stiffening beam 60, a stiffening beam connecting screw 61 passes through the wall guardrail stiffening beam 60, a plurality of adjacent precast concrete wall guardrails 57 are connected together, and a screw fixing cylinder 67 is arranged at the junction of the adjacent precast concrete wall guardrails 57, so that the adjacent beam connecting screws 61 are sleeved together.
8) Installing a transverse prestress counter-pull rod of the wall type guardrail: after the precast concrete wall guardrails 57 are connected together, the wall guardrail transverse prestress counter-pull rod 58 is arranged at the upper parts of the two opposite precast concrete wall guardrails 57 to prevent the precast concrete wall guardrails 57 from deviating.
9) Setting wall type guardrail broken joints: in the installation process of the precast concrete wall guardrail 57, a wall type guardrail broken joint 59 with the width of 2 centimeters is arranged every 4-6 meters, and asphalt is filled in the middle of the wall type guardrail broken joint 59.
10) Greening and grass planting: and after all the anti-collision facilities are installed and checked to be qualified, backfilling plain soil, tamping, arranging the kerbstones 54, and planting grass 56 in the planting soil filling cavities 55 on the inner sides of the kerbstones 54 to form green belts.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (3)
1. A construction method of a middle pier anti-collision system is suitable for arranging an anti-collision system on a pier stud group (52), and is characterized by comprising the following steps:
1) site cleaning: cleaning sundries at the bottom of the pier stud group (52);
2) and (3) measurement and paying-off: drawing lines on two sides of the pier group (52) according to the designed positions;
3) excavating a central separation zone excavation groove: manually excavating central separation belt excavating grooves (53) on two sides of the pier stud group (52) according to the position of the measuring paying-off;
4) pre-burying a prestressed rod end: pouring a concrete cushion layer (63) on the central partition strip excavation groove (53), embedding a prestressed rod end (64) on the concrete cushion layer (63), anchoring an embedded bolt rod (65) on the prestressed rod end (64), and backfilling a gravel layer (62) around the pier on the prestressed rod end (64) after the position of the prestressed rod end (64) is confirmed to be correct;
5) installing a wall type guardrail connecting bottom plate: after the pier-surrounding gravel layer (62) is backfilled to reach the designed thickness, leveling the pier-surrounding gravel layer (62), and paving a wall type guardrail connecting base plate (66) on the pier-surrounding gravel layer, wherein the wall type guardrail connecting base plate (66) penetrates through the embedded tie rods (65);
6) installing the precast concrete wall type guardrail: inserting the embedded tie rods (65) into the reserved holes of the precast concrete wall guardrails (57), wherein the wall guardrail connecting base plate (66) is connected with a plurality of precast concrete wall guardrails (57);
7) installing a reinforcing beam connecting screw: the precast concrete wall guardrail (57) is provided with a wall guardrail stiffening beam (60), a stiffening beam connecting screw (61) penetrates through the wall guardrail stiffening beam (60), and a plurality of adjacent precast concrete wall guardrails (57) are connected together;
8) installing a transverse prestress counter-pull rod of the wall type guardrail: after a plurality of precast concrete wall type guardrails (57) are connected together, the upper parts of two opposite precast concrete wall type guardrails (57) are provided with a transverse prestress counter-pull rod (58) of the wall type guardrail;
9) setting wall type guardrail broken joints: in the installation process of the precast concrete wall guardrail (57), wall guardrail broken joints (59) are arranged at intervals, and asphalt is filled in the middle of the wall guardrail broken joints (59);
10) greening and grass planting: and when all the anti-collision facilities are installed and checked to be qualified, backfilling plain soil, tamping, and planting greening grass (56) in the planting soil filling cavity (55).
2. The construction method of the middle pier anti-collision system according to claim 1,
in the step 6), the lower part of the precast concrete wall guardrail (57) is sleeved in the wall guardrail connecting bottom plate (66);
in the step 7), a screw fixing cylinder (67) is arranged at the junction of the adjacent precast concrete wall type guardrails (57), and the screw fixing cylinder (67) is sleeved with the beam connecting screw (61) to connect the adjacent beam connecting screw (61);
in the step 10), a curb stone (54) is arranged outside the planting soil filling cavity (55).
3. The middle pier anti-collision system is characterized by being constructed according to the construction method of the middle pier anti-collision system of any one of claims 1 to 2.
Priority Applications (1)
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| CN202010340018.1A CN111472303B (en) | 2018-12-07 | 2018-12-07 | Middle pier anti-collision system and construction method |
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| CN202010340018.1A CN111472303B (en) | 2018-12-07 | 2018-12-07 | Middle pier anti-collision system and construction method |
| CN201811494561.6A CN109577172B (en) | 2018-12-07 | 2018-12-07 | Middle pier anti-collision system and construction method |
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| CN202010340634.7A Active CN111472305B (en) | 2018-12-07 | 2018-12-07 | Middle pier anti-collision system and construction method |
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| CN112081019A (en) * | 2020-09-20 | 2020-12-15 | 石庆 | Pier protection device for pier maintenance |
| CN112663541A (en) * | 2020-12-22 | 2021-04-16 | 浙江交工集团股份有限公司 | Installation and construction method for ecological prefabricated guardrail of central separation zone |
| CN112942153A (en) * | 2021-01-26 | 2021-06-11 | 哈尔滨工业大学 | Road safety island and construction method thereof |
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| CN112663541B (en) * | 2020-12-22 | 2022-10-21 | 浙江交工集团股份有限公司 | Installation and construction method for ecological prefabricated guardrail of central separation zone |
| CN112942153A (en) * | 2021-01-26 | 2021-06-11 | 哈尔滨工业大学 | Road safety island and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111472304A (en) | 2020-07-31 |
| CN111472304B (en) | 2021-09-07 |
| CN111472305A (en) | 2020-07-31 |
| CN111472303B (en) | 2021-08-20 |
| CN109577172A (en) | 2019-04-05 |
| CN109577172B (en) | 2020-08-04 |
| CN111472305B (en) | 2022-04-01 |
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