CN116949871A - Vibration isolation box type roadbed structure and construction method thereof - Google Patents
Vibration isolation box type roadbed structure and construction method thereof Download PDFInfo
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- CN116949871A CN116949871A CN202310947730.1A CN202310947730A CN116949871A CN 116949871 A CN116949871 A CN 116949871A CN 202310947730 A CN202310947730 A CN 202310947730A CN 116949871 A CN116949871 A CN 116949871A
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- fixedly connected
- vibration isolation
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- 238000002955 isolation Methods 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 abstract description 10
- 230000000712 assembly Effects 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Abstract
The invention discloses a vibration isolation box type roadbed structure and a construction method thereof, comprising the following steps: the vibration reduction and isolation structures are arranged at equal intervals along the road travelling direction, the vibration reduction and isolation structures comprise raft plates, the top surfaces of the raft plates are provided with a plurality of bearing assemblies, the bottom surfaces of the raft plates are vertically and equidistantly provided with a plurality of foundation piles, and the raft plates are fixed on a road surface through the foundation piles; the box-type roadbed structure is provided with a plurality of box-type roadbed structures and is fixedly connected with bearing assemblies on the top surfaces of the two raft plates; wherein, the box roadbed structure is the cavity box, is provided with the expansion joint between the adjacent box roadbed structure. The bearing assembly has larger vertical bearing capacity and can support all loads of the upper structure; meanwhile, the horizontal rigidity is variable, so that the transmission of train vibration to foundation soil can be reduced, the ground vibration can be effectively separated, the earthquake response of an upper structure is obviously reduced, and the safety and stability of train operation are improved.
Description
Technical Field
The invention relates to the field of high-speed railway roadbed engineering, in particular to a vibration isolation box type roadbed structure and a construction method thereof.
Background
The traditional high-speed railway roadbed mainly adopts a hierarchical rubble reinforced layered structure system, is mostly of standard trapezoid cross section, has large self weight of roadbed body, wide occupation area and large foundation reinforcement treatment area, and needs a large amount of high-quality fillers. In areas with lack of filling materials and limited land, the novel box-type roadbed is adopted to replace the traditional roadbed form, so that the superiority and engineering suitability of the roadbed can be fully exerted, and resources and land are effectively saved.
When the high-speed train is in contact with the track during running, huge dynamic response and impact effect can be generated, so that the box-type roadbed structure vibrates, the integrity and durability of the box-type roadbed structure are adversely affected, and driving safety is endangered. Meanwhile, vibration can be transmitted to the surrounding through foundation soil, and adverse effect is generated on surrounding buildings. In addition, the occurrence of earthquake action has serious influence on the roadbed structure, and a series of measures are needed to improve the earthquake resistance of the roadbed and ensure the safe operation of the railway.
Disclosure of Invention
The invention aims to provide a vibration isolation box type roadbed structure and a construction method thereof, which are used for solving the problems existing in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a vibration isolation box type roadbed structure, which comprises:
the vibration reduction and isolation structure is provided with a plurality of vibration reduction and isolation structures at equal intervals along the road travelling direction, the vibration reduction and isolation structure comprises a raft, the top surface of the raft is provided with a plurality of bearing assemblies, the bottom surface of the raft is vertically provided with a plurality of foundation piles at equal intervals, and the raft is fixed on a road surface through the foundation piles;
the box-type roadbed structures are provided with a plurality of box-type roadbed structures, and any one box-type roadbed structure is arranged on the top surfaces of the raft plates of two adjacent vibration reduction and isolation structures and is fixedly connected with bearing assemblies on the top surfaces of the two raft plates;
the box roadbed structure is a hollow box body, and an expansion joint is arranged between every two adjacent box roadbed structures.
According to the vibration isolation box-type roadbed structure provided by the invention, the box-type roadbed structure comprises a top plate and a bottom plate which are arranged opposite to each other, a plurality of vertical plates are arranged between the top plate and the bottom plate at equal intervals, the top plate is fixedly connected with the bottom plate through the vertical plates, and the bottom plate is fixedly connected with the bearing assembly.
According to the vibration isolation box-type roadbed structure provided by the invention, the bottom surface of the top plate and the top surface of the bottom plate are respectively provided with a plurality of armpit, the armpit of the bottom surface of the top plate is in one-to-one correspondence with the armpit of the top surface of the bottom plate, and two ends of the vertical plate are respectively fixedly connected with the armpit of the bottom of the top plate and the armpit of the top of the bottom plate.
According to the vibration isolation box-type roadbed structure provided by the invention, the bearing component is the rubber support, the top surface of the raft is fixedly connected with the supporting cushion, and the rubber support is fixed between the supporting cushion and the bottom surface of the bottom plate.
According to the vibration isolation box-type roadbed structure provided by the invention, the rubber support comprises an upper support plate and a lower support plate which are respectively arranged on the top surface of the supporting bolster and the bottom surface of the bottom plate, wherein the top surface of the upper support plate and the bottom surface of the lower support plate are respectively and fixedly connected with anchor bolts, the upper support plate is fixedly connected with the bottom surface of the bottom plate through the anchor bolts, and the lower support plate is fixedly connected with the supporting bolster through the anchor bolts; a pressure-bearing rubber plate is fixedly connected between the upper support plate and the lower support plate; and a support dust cover is arranged between the support cushion and the bottom plate, the upper support plate and the lower support plate are both positioned in the support dust cover, and the pressure-bearing rubber plate is arranged between the support cushion and the bottom plate.
According to the vibration isolation box-type roadbed structure provided by the invention, a cushion layer is arranged between the raft and the foundation pile, the top end of the foundation pile is fixedly connected with the pile cap, and the foundation pile is fixedly connected to the bottom surface of the cushion layer through the pile cap.
According to the vibration isolation box type roadbed structure provided by the invention, the width of the top plate is 8-14 m, and the thickness is 0.4-0.6 m; the width of the bottom plate is 6-10 m, and the thickness of the bottom plate is 0.6-1.0 m; the transverse width of each vertical plate is 0.4-0.6 m, and the transverse distance between two adjacent vertical plates is 5-8 m.
According to the vibration isolation box-type roadbed structure provided by the invention, the two opposite side surfaces of the raft are respectively and fixedly connected with the stop blocks, and the bottom plate is arranged between the two stop blocks and is in limit fit with the stop blocks.
According to the vibration isolation box type roadbed structure provided by the invention, the foundation pile is a bored pile or a CFG pile.
A construction method of a vibration isolation box type roadbed structure comprises the following steps:
s1, performing site treatment, namely cleaning obstacles of a construction road section and performing flattening treatment;
s2, foundation pile construction, namely setting foundation piles at a preset distance on a pavement according to a design drawing, and leveling the foundation piles;
s3, raft construction, wherein raft plates with preset specifications are arranged at the tops of foundation piles;
s4, constructing a bearing assembly, and installing the bearing assembly at a preset position at the top of the raft according to design requirements;
s5, constructing a box-type roadbed structure, and paving the box-type roadbed structure on the bearing assembly.
The invention discloses the following technical effects:
1) The box-type roadbed structure does not need roadbed filling, has good stability and small occupied area, and effectively reduces the construction cost.
2) The bearing assembly is arranged below the box-type roadbed structure, has larger vertical bearing capacity and can support all loads of the upper structure; meanwhile, the horizontal rigidity is variable, so that the transmission of train vibration to foundation soil can be reduced, surrounding buildings can be protected, ground vibration can be effectively separated, the earthquake response of an upper structure is obviously reduced, and the safety and stability of train operation are improved.
3) The raft plates are positioned between two sections of adjacent roadbeds, foundation piles are symmetrically arranged below the raft plates, foundation settlement can be effectively controlled, and high stability and high smoothness of a high-speed railway line are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a vibration isolation box subgrade structure;
fig. 2 is a schematic view of the longitudinal arrangement of the vibration isolation box-type roadbed structure;
fig. 3 is a schematic plan layout view of a vibration isolation box type roadbed structure;
FIG. 4 is a schematic view of a rubber mount;
fig. 5 is a schematic view of a bearing pad plan arrangement.
Wherein, 1, a box roadbed structure; 2. a vibration reduction and isolation structure; 11. a top plate; 12. a bottom plate; 13. a riser; 14. adding armpits; 15. an expansion joint; 21. a rubber support; 22. a raft; 23. a foundation pile; 24. a support pad; 25. a stop block; 26. a cushion layer; 27. a pile cap; 28. anchor bolt holes; 29. a support dust cover; 211. an upper support plate; 212. a lower support plate; 213. a pressure-bearing rubber plate; 214. an anchor bolt.
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.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1 to 5, the present invention provides a vibration isolation box type roadbed structure comprising:
the vibration reduction and isolation structure 2 is arranged in a plurality of at equal intervals along the road travelling direction, the vibration reduction and isolation structure 2 comprises a raft 22, a plurality of bearing assemblies are arranged on the top surface of the raft 22, a plurality of foundation piles 23 are vertically and equidistantly arranged on the bottom surface of the raft 22, and the raft 22 is fixed on a road surface through the foundation piles 23;
the specific size and number of foundation piles 23 can be determined by settlement analysis and foundation check according to engineering geological conditions of foundation soil. The raft 22 is positioned between two adjacent box-shaped roadbed structures 1, and is respectively connected with the two box-shaped roadbed structures 1, so that foundation settlement can be effectively controlled, and high stability and high smoothness of a high-speed railway line are ensured;
the box-type roadbed structures 1 are arranged in a plurality of ways, and any box-type roadbed structure 1 is arranged on the top surfaces of the raft plates 22 of the two adjacent vibration reduction and isolation structures 2 and is fixedly connected with bearing components on the top surfaces of the two raft plates 22;
wherein, the box roadbed structure 1 is a hollow box body, and an expansion joint 15 is arranged between the adjacent box roadbed structures 1.
In a further optimization scheme, the longitudinal length of each section of box-type roadbed structure 1 is 9.92m, and the expansion joint 15 between each section of box-type roadbed structure 1 can be selected to be 0.1m. The setting of box roadbed structure 1 compares in traditional filler roadbed, when satisfying railway laying, has reduced the roadbed dead weight greatly, effectively reduces the area occupied of soil.
According to the further optimization scheme, the box-type roadbed structure 1 is formed by casting reinforced concrete not smaller than C35, and rigidity and strength of the box-type roadbed structure are greatly improved compared with those of a traditional trapezoid filler roadbed structure.
Further optimizing scheme, box roadbed structure 1 is including just setting up roof 11 and bottom plate 12, equidistant a plurality of risers 13 that are provided with between roof 11 and the bottom plate 12, roof 11 and bottom plate 12 pass through riser 13 fixed connection, bottom plate 12 and bearing assembly fixed connection.
Further optimizing scheme, the top surface of roof 11 bottom surface and bottom plate 12 is provided with a plurality of armpit 14 respectively, and the armpit 14 of roof 11 bottom surface and the armpit 14 of bottom plate 12 top surface set up in one-to-one, and the both ends of riser 13 are respectively with the armpit 14 of roof 11 bottom, the armpit 14 fixed connection of bottom plate 12 top.
Further optimized scheme, the bearing component is a rubber support 21, the top surface of the raft 22 is fixedly connected with a supporting bolster 24, and the rubber support 21 is fixed between the supporting bolster 24 and the bottom surface of the bottom plate 12. The size of the surface of the supporting cushion stone 24 is determined according to the calculation of local bearing, the length and the width of the cushion stone are increased by at least about 50mm compared with the corresponding size of the support, the height of the cushion stone is more than 100mm, and the installation position of the jack is considered to be convenient for the support to replace the top beam.
In a further optimized scheme, the rubber support 21 comprises an upper support plate 211 and a lower support plate 212 which are respectively arranged on the top surface of the supporting bolster 24 and the bottom surface of the bottom plate 12, wherein an anchor bolt 214 is respectively and fixedly connected to the top surface of the upper support plate 211 and the bottom surface of the lower support plate 212, the upper support plate 211 is fixedly connected with the bottom surface of the bottom plate 12 through the anchor bolt 214, and the lower support plate 212 is fixedly connected with the supporting bolster 24 through the anchor bolt 214; a pressure-bearing rubber plate 213 is fixedly connected between the upper support plate 211 and the lower support plate 212; a support dust cover 29 is arranged between the support cushion 24 and the bottom plate 12, and an upper support plate 211 and a lower support plate 212, and pressure-bearing rubber plates 213 are positioned in the support dust cover 29.
Further optimizing scheme is provided with bed course 26 between raft 22 and the foundation pile 23, and foundation pile 23 top fixedly connected with pile cap 27, foundation pile 23 pass through pile cap 27 fixed connection in the bottom surface of bed course 26.
Further optimizing scheme, the width of the top plate 11 is 8 m-14 m, and the thickness is 0.4 m-0.6 m; the width of the bottom plate 12 is 6 m-10 m, and the thickness is 0.6 m-1.0 m; the transverse width of the vertical plate 13 is 0.4 m-0.6 m, and the transverse distance between two adjacent vertical plates 13 is 5 m-8 m.
Further optimizing scheme, the two opposite side surfaces of raft 22 are respectively fixedly connected with a stop block 25, and the bottom plate 12 is arranged between the two stop blocks 25 and is in limit fit with the stop blocks 25.
Further optimized, the foundation pile 23 is a bored pile or a CFG pile.
The construction method of the vibration isolation box type roadbed structure comprises the following steps:
s1, performing site treatment, namely cleaning obstacles of a construction road section and performing flattening treatment;
s2, constructing foundation piles 23, and constructing the foundation piles 23 according to the design drawing;
s3, constructing a cushion layer 26, paving a combined cushion layer 26 of 0.2 m gravels-0.1 m medium coarse sand-0.2 m gravels on the top of a pile cap 27, paving a layer of geogrid in the middle of coarse sand in the cushion layer 26, paving the cushion layer 26 by using well-graded gravels, paving the cushion layer 26 by adopting a static compaction method, firstly drawing a self line on a paving layer according to the width before paving the geogrid, and then fixing the end part of the geogrid by using U-shaped steel bars.
S4, constructing the raft 22, and pouring reinforced concrete raft 22 with the thickness of 0.8m and not less than C35 above the cushion layer 26, wherein the plane size is 8 multiplied by 5m;
s5, constructing a rubber support 21, and installing the rubber support 21 at a preset position according to design requirements;
s6, constructing the box-type roadbed structure 1, paving the box-type roadbed structure 1 on the rubber support 21, and constructing the box-type roadbed structure by means of casting or prefabrication in situ.
The concrete process of foundation pile 23 construction includes the following steps:
s21, measuring and lofting, and marking the position of each pile according to a design drawing;
s22, positioning the drilling machine, namely vertically marking a pole by adopting a long auger, checking a pole guide rod of the drilling machine, and correcting the position to enable the drilling machine to be vertically aligned with the pile position center;
s23, forming holes by a drilling machine, closing a drill bit valve before drilling, moving a drill rod downwards until the drill bit contacts the ground, starting a motor to drill in, and drilling slowly and quickly until the drill bit reaches a designed elevation, marking the drilling length on the drill rod, recording the drilling depth, and keeping the drilling machine stable and avoiding inclination and dislocation in the whole drilling process;
s24, pouring and tube drawing of the mixture, wherein the mixture is fed intensively by using a centralized stirring station, the stirring truck is transported to the site, the mixture is pumped by adopting a ground pump, the pumping capacity of each stroke is determined by a test pile, the pumping capacity of the mixture is calculated and determined by combining the number determined by the test pile, the pumping is continuously carried out, the pump is stopped for waiting for the mixture, tube drawing is started after a drill pipe core tube is filled with the mixture, tube drawing is strictly forbidden, tube drawing is firstly carried out and then the pump is carried out, the drill pipe is firstly stationary and then carried out, the pulling speed is generally controlled to be 2-3 m per minute, continuous pulling and continuous feeding are ensured, and the elevation of the construction pile top is higher than the designed pile top by not less than 0.5m;
s25, cleaning soil between piles, cleaning and transporting the soil between piles after the CFG piles are constructed and the mixture reaches the strength, wherein damage to pile bodies below the designed pile top elevation cannot be caused during cleaning, and the elevation cannot be strictly controlled during construction, so that overexcavation is avoided;
s26, cutting pile heads, after removing soil between piles, cutting pile heads above the designed elevation of pile items, determining the designed pile top elevation of each pile by measuring hanging wires, marking the pile heads by using red paint or ink wires, cutting the pile heads by adopting a three-cutter transverse cutting process of a pile cutting machine, cutting the pile heads to a depth of not less than 15cm, inserting 3 steel drills into the joint of the pile heads at the same angle on the same horizontal plane after cutting, cutting the pile heads by using hammer impact, and leveling the pile tops from the periphery to the middle by using the steel drills and hand hammers after cutting the pile heads;
s27, detecting a foundation pile 23, wherein after the construction of the CFG pile is finished, the detection is generally carried out after 28 days, wherein the detection comprises the detection of the integrity of the pile body, the detection of the integrity of the pile body by adopting low strain force, the detection of the composite foundation, the detection of the bearing capacity of the composite foundation by adopting a single pile load test, and the static load test requirement of reaching the ultimate bearing capacity of the pile;
s28, constructing a pile cap 27, constructing the pile cap 27 after the CFG pile is qualified in detection, arranging a C35 or C30 reinforced concrete pile cap 27 on the pile top of the CFG pile, carrying out centralized processing on a reinforcement cage by a reinforcement yard, then transporting to the site, casting by adopting a shaping template, measuring hanging lines to determine the positions of four corners of the template, ensuring that a pile head is positioned at the central position of the pile cap 27, and covering and curing by geotechnical cloth in time after the pile cap 27 is cast;
s29, backfilling soil among piles, backfilling the soil among backfilled piles by adopting a C group material, filling the backfilled piles twice, tamping each layer by using a small frog rammer, wherein the thickness of the compacted layer is not less than 10cm and not more than 20cm, and the compaction quality meets the design requirement;
the construction of the rubber support 21 comprises the following steps:
s51, preparing construction, and checking the single-section span of the box-type roadbed structure 1, the size and the elevation of a support backing stone and the position and the size of a reserved hole anchor bolt hole 28 before mounting the support;
s52, checking the center line and elevation of the cushion, drawing a supporting cross line, checking the lofted cushion point position by using a total station, and checking the elevation of the cushion. Must be guaranteed to be within the allowable error range; drawing a support cross line according to the lofted point positions;
s53, roughening and wetting the support cushion stone, roughening the surface of the support whole stone at the position of the support seat, removing sundries in the reserved anchor bolt holes 28, and soaking the surface of the support whole stone with water;
s54, cleaning reserved holes of anchor bolts of the support, and removing sundries of the support and the anchor bolt holes 28 to obtain sundries without slurry, water accumulation, oil stains and the like; before installing the support, the support is installed after the dirt fields such as cement paste blocks attached to the steel plate surface of the bottom plate 12 are removed, so that the problem that the support is not closely attached to the steel plate of the bottom plate 12 due to the dirt fields such as cement paste is avoided. Meanwhile, no dirt exists between the upper plate and the lower plate of the support;
s55, installing the supports, finely adjusting the positions of the supports, and installing four supports on each section of box-type roadbed structure 1;
s56, processing the support, wherein the support needs to check the installation quality of the support before the anchor bolt hole 28 is poured, if a problem exists, the support needs to process in time, each deviation is adjusted to be within the standard allowable range, and the anchor bolt hole 28 is poured after the problem is processed;
s57, filling anchor holes 28 of the support of the filler stone, after the support is in place, filling the anchor holes 28 by adopting C50 support mortar, and calculating the required grouting material volume at first before filling, wherein the quantity of the practical grouting materials should not generate excessive error with the calculated value, and the middle slurry shortage should be prevented;
s58, installing the support dust cover 29, wherein the support dust cover 29 is tight and firm, the bolts are complete, and the dust cover is opened and cannot be abutted against the limiting device.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The utility model provides a vibration isolation box roadbed structure which characterized in that includes:
the vibration reduction and isolation structure (2) is arranged in a plurality of mode at equal intervals along the road advancing direction, the vibration reduction and isolation structure (2) comprises a raft plate (22), a plurality of bearing components are arranged on the top surface of the raft plate (22), a plurality of foundation piles (23) are vertically and equidistantly arranged on the bottom surface of the raft plate (22), and the raft plate (22) is fixed on a road surface through the foundation piles (23);
the box-type roadbed structures (1) are arranged in a plurality, and any box-type roadbed structure (1) is arranged on the top surfaces of the raft plates (22) of two adjacent vibration reduction and isolation structures (2) and is fixedly connected with bearing components on the top surfaces of the two raft plates (22);
the box-type roadbed structure (1) is a hollow box body, and an expansion joint (15) is arranged between every two adjacent box-type roadbed structures (1).
2. The vibration isolation box subgrade structure according to claim 1, wherein: the box-type roadbed structure (1) comprises a top plate (11) and a bottom plate (12) which are arranged right opposite to each other, a plurality of vertical plates (13) are arranged between the top plate (11) and the bottom plate (12) at equal intervals, the top plate (11) and the bottom plate (12) are fixedly connected through the vertical plates (13), and the bottom plate (12) is fixedly connected with the bearing assembly.
3. The vibration isolation box subgrade structure according to claim 2, wherein: the top plate is characterized in that a plurality of armpit (14) are respectively arranged on the bottom surface of the top plate (11) and the top surface of the bottom plate (12), the armpit (14) on the bottom surface of the top plate (11) are arranged in one-to-one correspondence with the armpit (14) on the top surface of the bottom plate (12), and two ends of the vertical plate (13) are respectively fixedly connected with the armpit (14) on the bottom of the top plate (11) and the armpit (14) on the top of the bottom plate (12).
4. The vibration isolation box subgrade structure according to claim 2, wherein: the bearing assembly is a rubber support (21), a supporting bolster (24) is fixedly connected to the top surface of the raft (22), and the rubber support (21) is fixed between the supporting bolster (24) and the bottom surface of the bottom plate (12).
5. The vibration isolation box subgrade structure according to claim 4, wherein: the rubber support (21) comprises an upper support plate (211) and a lower support plate (212) which are respectively arranged on the top surface of the supporting bolster (24) and the bottom surface of the bottom plate (12), wherein an anchor bolt (214) is fixedly connected to the top surface of the upper support plate (211) and the bottom surface of the lower support plate (212), the upper support plate (211) is fixedly connected with the bottom surface of the bottom plate (12) through the anchor bolt (214), and the lower support plate (212) is fixedly connected with the supporting bolster (24) through the anchor bolt (214); a pressure-bearing rubber plate (213) is fixedly connected between the upper support plate (211) and the lower support plate (212); a support dust cover (29) is arranged between the supporting cushion stone (24) and the bottom plate (12), the upper support plate (211) and the lower support plate (212) are both positioned in the support dust cover (29), and the pressure-bearing rubber plate (213) is arranged on the lower support plate.
6. The vibration isolation box subgrade structure according to claim 1, wherein: a cushion layer (26) is arranged between the raft plate (22) and the foundation pile (23), a pile cap (27) is fixedly connected to the top end of the foundation pile (23), and the foundation pile (23) is fixedly connected to the bottom surface of the cushion layer (26) through the pile cap (27).
7. The vibration isolation box subgrade structure according to claim 2, wherein: the width of the top plate (11) is 8-14 m, and the thickness is 0.4-0.6 m; the width of the bottom plate (12) is 6-10 m, and the thickness is 0.6-1.0 m; the transverse width of each vertical plate (13) is 0.4-0.6 m, and the transverse distance between two adjacent vertical plates (13) is 5-8 m.
8. The vibration isolation box subgrade structure according to claim 2, wherein: the raft board (22) is fixedly connected with stop blocks (25) respectively on two opposite side surfaces, and the bottom plate (12) is arranged between the two stop blocks (25) and is in limit fit with the stop blocks (25).
9. The vibration isolation box subgrade structure according to claim 1, wherein: the foundation pile (23) is a bored pile or a CFG pile.
10. A construction method of a vibration isolation box type roadbed structure based on the vibration isolation box type roadbed structure according to claim 1-9, characterized by comprising the following steps:
s1, performing site treatment, namely cleaning obstacles of a construction road section and performing flattening treatment;
s2, constructing foundation piles (23), arranging the foundation piles (23) at a preset distance on a road surface according to a design drawing, and leveling the foundation piles (23);
s3, constructing raft plates (22), and arranging raft plates (22) with preset specifications at the tops of foundation piles (23);
s4, constructing a bearing assembly, and installing the bearing assembly at a preset position at the top of the raft (22) according to design requirements;
s5, constructing the box-type roadbed structure (1), and paving the box-type roadbed structure (1) on the bearing assembly.
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| CN202310947730.1A CN116949871A (en) | 2023-07-31 | 2023-07-31 | Vibration isolation box type roadbed structure and construction method thereof |
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| CN202310947730.1A CN116949871A (en) | 2023-07-31 | 2023-07-31 | Vibration isolation box type roadbed structure and construction method thereof |
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