CN111041920A - Construction method for plate-type concrete prefabricated pavement - Google Patents

Construction method for plate-type concrete prefabricated pavement Download PDF

Info

Publication number
CN111041920A
CN111041920A CN202010002232.6A CN202010002232A CN111041920A CN 111041920 A CN111041920 A CN 111041920A CN 202010002232 A CN202010002232 A CN 202010002232A CN 111041920 A CN111041920 A CN 111041920A
Authority
CN
China
Prior art keywords
plate
reinforcing steel
holes
hole
grouting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010002232.6A
Other languages
Chinese (zh)
Inventor
郑蓉
李新亮
曲瑞雪
余能银
邓益兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Hengzeng Assembly Construction Technology Co Ltd
Original Assignee
Sichuan Hengzeng Assembly Construction Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Hengzeng Assembly Construction Technology Co Ltd filed Critical Sichuan Hengzeng Assembly Construction Technology Co Ltd
Priority to CN202010002232.6A priority Critical patent/CN111041920A/en
Publication of CN111041920A publication Critical patent/CN111041920A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/06Pavings made of prefabricated single units made of units with cement or like binders
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/06Pavings made of prefabricated single units made of units with cement or like binders
    • E01C5/08Reinforced units with steel frames

Abstract

The invention provides a construction method of a prefabricated concrete pavement of a plate, which comprises the following plate manufacturing steps: manufacturing a prefabricated plate; burdening the precast slab; perforating the precast slab; in order to reduce stress concentration in the later stage of hole opening and increase the tensile strength of the lower part of the prefabricated plate, reinforcing steel bars, reinforcing steel bar meshes, force transfer rods and hoisting reinforcing steel bars are required to be arranged; mounting the prefabricated plates, cleaning a base layer before the prefabricated plates are mounted, mounting leveling instruments at four corners of each plate, and determining the flatness of each plate after the prefabricated plates are completely mounted; and welding and grouting the boards with the flatness detected, wherein the grouting thickness is 30-50mm, and finally filling the gaps between the grouted boards with special asphalt. The material for manufacturing the prefabricated plate is uniform and has good grain shape, firm and clean texture and no harmful substances, the strength of the manufactured prefabricated plate is higher, and the reinforcement of the prefabricated plate reduces the stress concentration in the later period of punching and enhances the tensile capacity of the lower part of the prefabricated plate.

Description

Construction method for plate-type concrete prefabricated pavement
Technical Field
The invention belongs to the technical field of concrete prefabricated pavement construction methods, and particularly relates to a construction method of a slab concrete prefabricated pavement.
Background
The prefabricated road surface is a road surface of which a surface layer is paved by cement concrete prefabricated blocks, and the prefabricated road mainly has two problems in the using process. Receive prefabricated road surface itself to assemble the shaping, wholly combine not well with the road bed, seal not tight, require high to the road matrix volume, later stage is along with road bed rainwater infiltration and inhomogeneous settlement scheduling problem, takes place the perk not smooth problem very easily. Resulting in cracking and breaking of the prefabricated pavement and the like. The requirement of the stability of the long-term load of the road cannot be met. Thereby causing difficulty in the popularization of the prefabricated road.
Disclosure of Invention
In order to solve the technical problem, the invention provides a construction method of a plate-type concrete prefabricated pavement, wherein plates of the plate-type concrete prefabricated pavement are divided into plate partitions according to the advancing direction of a road, a lane closest to a central line is a first lane, a plate with the smallest pile number is a starting plate, and the plates which are sequentially arranged in a snake shape from the left lower corner to the top are as follows: the prefabricated pavement construction method comprises the following steps of:
s1: precast slab: the prefabricated thickness of the manufacturing plate is 200mm, and 50mm is reserved as the grouting thickness;
s2: preparing materials: when the concrete is proportioned, cement with the diameter less than 25mm, 20mm as a main material, good particle shape, firm and clean texture and coarse aggregate containing 4-6 water chestnut macadam are selected; selecting fine aggregate with good grain shape, low mud amount and no harmful substances.
S3: preparing a reserved hole: reserving grouting holes, detection holes, reinforcing steel bar insertion holes and reinforcing steel bar welding holes on the plates, wherein the reserved positions of the grouting holes are the center of each plate and the center of each 1/4 plates, and the reserved positions are all at the intersection of reinforcing steel bar meshes; the positions of the detection holes are distributed around the plate, and the detection holes are connected to the plate angle inclined line by taking the grouting holes as the center and are arranged on the crossed line of the reinforcing mesh; the reinforcing steel bar stretching-in holes are divided into transverse connecting stretching-in holes and force transmission rod deep-in holes, the aperture of each hole is consistent with the grouting aperture, the reserved positions of the holes are consistent with the position of the reinforcing steel bar, the reinforcing steel bar penetrates through the hole center, and therefore two plates of reinforcing steel bars can be conveniently lapped, when the holes are only used for grouting, the hole depth can be intersected with the stretching-in holes, and if one hole is multipurpose, the largest requirement reservation among the holes can be met; the steel bar welding holes are distributed towards two sides by taking the center of the plate as a cross point, so that the modulus of the preformed hole is matched with that of the preformed hole;
s4: in order to reduce stress concentration at the later stage of hole opening and tensile capacity of the lower part of the precast slab, reinforcing steel bars, reinforcing steel bar meshes, dowel bars and hoisting reinforcing steel bars are configured, the thickness of a protective layer of the reinforcing steel bars is not less than 50mm, the reinforcing steel bar meshes are arranged between 50mm and 80mm away from the bottom of the slab, and the distance from the edge of the slab is not less than 50 mm; the dowel bar should extend 500mm out of the plate, and the distance is 400mm and 600mm, preferably 600 mm; the bottom feet of the hoisting reinforcing steel bars are bound or welded in the reinforcing steel bar net piece, and the hoisting reinforcing steel bars are obliquely lapped and form an included angle of 45 degrees with the plate edges;
s5: mounting the prefabricated plates, cleaning a base layer before the prefabricated plates are mounted, mounting leveling instruments at four corners of each plate, and determining the flatness of each plate after the prefabricated plates are completely mounted;
s6: and (3) welding and grouting the boards with the detected flatness, wherein the grouting thickness is adjustable within 30-50mm, the strength of the slurry is equal to or greater than that of the prefabricated boards, the grouting mainly serves to connect the prefabricated boards with the road base and adjust the flatness, and finally, filling the gaps between the boards with the grouting by using special asphalt.
Preferably, the strength of the precast slab should be between C30-C50, the specific strength should be adjusted according to the road grade requirement, and 1-2 models of standard marks should be increased.
Preferably, the number of the grouting holes is 5, the hole diameter size is determined according to different projects and the specification of a shotcrete machine, but is not larger than 100mm, and the depth is the thickness penetrating through the whole prefabricated plate; the aperture of the detection hole is less than 50mm, the distance from the edge of the plate is not less than 400mm, and part of the detection hole can be used as a transverse connecting rod grouting hole and used as a grouting hole, and the aperture of the detection hole is as large as that of the grouting hole.
Preferably, the aperture of the transverse connecting stretching hole is 36mm, the depth is 300mm, the distance between the reserved holes is 600mm and 800mm, and the transverse connecting stretching hole is selected according to the road grade and the construction environment; the aperture of dowel bar deep hole is 36mm, and is deep 500mm, and the preformed hole interval is between 400~600, is generally 600, and special cases can strengthen.
Preferably, HRB three-stage 16 of the steel mesh is selected, and the distance is 20 mm; the bottom feet of the hoisting reinforcing steel bars are 600-1000mm, and the height of the hoisting reinforcing steel bars is 100mm higher than the plate surface of the prefabricated plate.
Compared with the prior art, the invention has the beneficial effects that: in the selected materials for manufacturing the prefabricated slab, the coarse aggregate and the fine aggregate are good in uniform particle shape, firm and clean in texture and free of harmful substances, so that the manufactured prefabricated slab is high in strength, and the reinforcing steel bars, the reinforcing steel bar net sheets, the force transmission rods and the hoisting reinforcing steel bars are arranged when the prefabricated slab is perforated, so that the stress concentration in the later stage of perforation and the tensile capacity of the lower part of the prefabricated slab are reduced.
Drawings
FIG. 1 is a block distribution diagram of a construction method of a block concrete precast pavement;
FIG. 2 is a step view of a construction method of a plate-shaped concrete precast pavement;
fig. 3 is a schematic structural view of a precast slab of a construction method of a precast concrete pavement slab.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of 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, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is further described below:
example (b):
a construction method for a plate concrete prefabricated pavement is disclosed, as shown in figure 1, the plates of the plate concrete prefabricated pavement are divided into plate divisions according to the advancing direction of the road, the lane closest to the center line of the left side is a first lane, the plate with the smallest pile number is a starting plate, the total number of the plates is nine, the plates are distributed in a nine-grid shape, and the first row from left to right is arranged as follows: a first lane starting plate, a first lane middle plate, a first lane tail plate; the second row is arranged as follows: a second lane starting plate, a second lane middle plate and a second lane tail plate; the third row is arranged as: a third lane starting plate, a third lane middle plate and a third lane tail plate.
As shown in the attached figure 2, the block manufacturing steps of the prefabricated pavement construction method are as follows:
(1) precast slab: the prefabricated thickness of the manufacturing plate is 200mm, and 50mm is reserved as the grouting thickness;
(2) strength of the plate: the strength of the precast slab is between C30 and C50, the concrete strength is adjusted according to the road grade requirement, 1 to 2 types of standard marks are increased, and cement with the diameter less than 25mm is selected when the concrete is proportioned, and the cement is mainly 20 mm; the water chestnut granules have good particle shapes, firm and clean texture, and contain coarse aggregates of 4-6 water chestnut macadam; selecting fine aggregate with good grain shape, low mud amount and no harmful substances.
(3) As shown in fig. 3, the prefabricated panels are perforated: reserving grouting holes, detection holes, reinforcing steel bar stretching holes and reinforcing steel bar welding holes on the plates, wherein the number of the grouting holes is 5, the hole diameter is determined according to different projects and the specification of a shotcrete machine, but the hole diameter is not larger than 100mm, the depth is the thickness penetrating through the whole prefabricated plate, and the reserved positions of the grouting holes are the center of each plate and the center of each 1/4 plates and are all positioned at the intersection of reinforcing steel bar meshes; the aperture of the detection hole is less than 50mm, the distance from the edge of the plate is not less than 400mm, part of the detection hole can be used as a transverse connecting rod grouting hole and used as a grouting hole, the aperture of the detection hole is distributed around the plate at the position as large as the grouting hole, and the detection hole is distributed on an angle inclined line of the connecting plate taking the grouting hole as the center and on a steel mesh crossing line; the reinforcing steel bar stretching-in holes are divided into transverse connection stretching-in holes and dowel bar deep-in holes, the aperture of each transverse connection stretching-in hole is 36mm, the depth of each transverse connection stretching-in hole is 300mm, the distance between reserved holes is 800mm and 600mm, and the transverse connection stretching-in holes are selected according to road grades and construction environments; the hole diameter of the dowel bar deep hole is 36mm, the depth is 500mm, the distance between reserved holes is 400-600mm, generally 600, special conditions can be strengthened, the hole diameters of the two holes are consistent with the grouting hole diameter, the reserved positions of the two holes are consistent with the position of a steel bar, the steel bar penetrates through the hole center, two steel bars can be conveniently lapped, when the two holes are only used for grouting, the hole depth can be crossed with the extending hole, and if one hole is multipurpose, the largest requirement reservation among the holes can be met; the steel bar welding holes are distributed towards two sides by taking the center of the plate as a cross point, so that the modulus of the preformed hole is matched with that of the preformed hole;
(4) in order to reduce stress concentration at the later stage of hole opening and tensile capacity of the lower part of the precast slab, reinforcing steel bars, reinforcing steel bar meshes, force transfer rods and hoisting reinforcing steel bars are configured, the thickness of a protective layer of the reinforcing steel bars is not less than 50mm, the HRB three-stage 16 of the reinforcing steel bar meshes is 20mm, the reinforcing steel bar meshes are arranged between 50mm and 80mm away from the bottom of the slab, and the distance from the edge of the slab is not less than 50 mm; the dowel bar should extend 500mm out of the plate, and the distance is 400mm and 600mm, preferably 600 mm; the bottom feet of the hoisting reinforcing steel bars are 600-1000mm, the height of the bottom feet is 100mm higher than the plate surface of the prefabricated plate, the bottom feet of the hoisting reinforcing steel bars are bound or welded in a reinforcing steel bar net piece, and the hoisting reinforcing steel bars are obliquely lapped and form an included angle of 45 degrees with the plate edge;
(5) the prefabricated slabs are installed, a base layer is cleaned before the prefabricated slabs are installed, a leveling instrument and light rays are used for checking the flatness of the roadbed, during checking, the leveling instrument is used for measuring the height difference and the gradient of an original slab and the roadbed, the light rays are used for cross checking the flatness of the roadbed, if the local part of the roadbed is arched for more than 5cm, an electric hammer is used for cleaning the roadbed, the roadbed is cleaned to be lower than 5cm, and the flatness of each slab is confirmed after all the prefabricated slabs are installed;
(6) welding and grouting the boards with the detected flatness, wherein the grouting thickness is adjustable between 30 mm and 50mm, the strength of the slurry is equal to or greater than that of the prefabricated boards, the grouting mainly has the main functions of connecting the prefabricated boards with the road base and adjusting the flatness, the joints of the outer board bottom and the roadbed are sealed by quick-setting concrete, the outflow during grouting is prevented, and high-pressure grouting is performed at the grouting holes by using a grouting machine until the cabin is full; after grouting, pouring asphalt into the joint seam when the concrete reaches the final set point, wherein the filling must be full, lime is uniformly scattered along the periphery of the joint seam during pouring, then the asphalt is poured into the joint seam, and a shovel is used for removing asphalt on the surface after one joint seam is filled.
It should be noted that, in this document, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The construction method is characterized in that the blocks of the block concrete prefabricated pavement are divided into a first block as a lane closest to a central line according to the advancing direction of a road, a block with the minimum pile number as a starting block, and the blocks which are sequentially arranged in a snake shape from the lower left corner upwards are as follows: the construction method comprises the following steps of:
s1: preparing a reserved hole: reserving grouting holes, detection holes, reinforcing steel bar insertion holes and reinforcing steel bar welding holes on the plates, wherein the reserved positions of the grouting holes are the center of each plate and the center of each 1/4 plates, and the reserved positions are all at the intersection of reinforcing steel bar meshes; the positions of the detection holes are distributed around the plate, and the detection holes are connected to the plate angle inclined line by taking the grouting holes as the center and are arranged on the crossed line of the reinforcing mesh; the reinforcing steel bar stretching-in holes are divided into transverse connecting stretching-in holes and force transmission rod deep-in holes, the aperture of each hole is consistent with the grouting aperture, the reserved positions of the holes are consistent with the position of the reinforcing steel bar, the reinforcing steel bar penetrates through the hole center, and therefore two plates of reinforcing steel bars can be conveniently lapped, when the holes are only used for grouting, the hole depth can be intersected with the stretching-in holes, and if one hole is multipurpose, the largest requirement reservation among the holes can be met; the steel bar welding holes are distributed towards two sides by taking the center of the plate as a cross point, so that the modulus of the preformed hole is matched with that of the preformed hole;
s2: in order to reduce stress concentration at the later stage of hole opening and tensile capacity of the lower part of the precast slab, reinforcing steel bars, reinforcing steel bar meshes, dowel bars and hoisting reinforcing steel bars are configured, the thickness of a protective layer of the reinforcing steel bars is not less than 50mm, the reinforcing steel bar meshes are arranged between 50mm and 80mm away from the bottom of the slab, and the distance from the edge of the slab is not less than 50 mm; the dowel bar should extend 500mm out of the plate, and the distance is 400mm and 600mm, preferably 600 mm; the bottom feet of the hoisting reinforcing steel bars are bound or welded in the reinforcing steel bar net piece, and the hoisting reinforcing steel bars are obliquely lapped and form an included angle of 45 degrees with the plate edges;
s3: mounting the prefabricated plates, cleaning a base layer before the prefabricated plates are mounted, mounting leveling instruments at four corners of each plate, and determining the flatness of each plate after the prefabricated plates are completely mounted;
s4: and (3) welding and grouting the boards with the detected flatness, wherein the grouting thickness is adjustable within 30-50mm, the strength of the slurry is equal to or greater than that of the prefabricated boards, the grouting mainly serves to connect the prefabricated boards with the road base and adjust the flatness, and finally, filling the gaps between the boards with the grouting by using special asphalt.
2. The construction method of a precast concrete pavement as claimed in claim 1, wherein the precast slab has a slab strength between C30 and C50, a specific strength adjusted according to road grade requirements, and a standard grade of 1-2 types should be increased.
3. The construction method of a precast concrete pavement as claimed in claim 1, wherein the number of the grouting holes is 5, the hole diameter is determined according to different projects and specifications of a shotcrete machine, but is not greater than 100mm, and the depth is the thickness of the whole precast slab; the aperture of the detection hole is less than 50mm, the distance from the edge of the plate is not less than 400mm, and part of the detection hole can be used as a transverse connecting rod grouting hole and used as a grouting hole, and the aperture of the detection hole is as large as that of the grouting hole.
4. The construction method of the precast concrete pavement as claimed in claim 1, wherein the aperture of the transverse connection access hole is 36mm, the depth is 300mm, and the distance between the reserved holes is 800mm and 600mm, which is selected according to road grade and construction environment; the aperture of dowel bar deep hole is 36mm, and is deep 500mm, and the preformed hole interval is between 400~600, is generally 600, and special cases can strengthen.
5. The construction method of a slab-type concrete precast pavement according to claim 1, wherein HRB of the steel mesh is of three stages 16, and the interval is 20 mm; the bottom feet of the hoisting reinforcing steel bars are 600-1000mm, and the height of the hoisting reinforcing steel bars is 100mm higher than the plate surface of the prefabricated plate.
CN202010002232.6A 2020-01-02 2020-01-02 Construction method for plate-type concrete prefabricated pavement Pending CN111041920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010002232.6A CN111041920A (en) 2020-01-02 2020-01-02 Construction method for plate-type concrete prefabricated pavement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010002232.6A CN111041920A (en) 2020-01-02 2020-01-02 Construction method for plate-type concrete prefabricated pavement

Publications (1)

Publication Number Publication Date
CN111041920A true CN111041920A (en) 2020-04-21

Family

ID=70243762

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010002232.6A Pending CN111041920A (en) 2020-01-02 2020-01-02 Construction method for plate-type concrete prefabricated pavement

Country Status (1)

Country Link
CN (1) CN111041920A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831985A (en) * 2010-06-04 2010-09-15 北京万科企业有限公司 Precast concrete wallboard and preparation method thereof
CN102587265A (en) * 2012-02-21 2012-07-18 交通运输部公路科学研究所 Auxiliary component and concrete slab for roadbed construction and method for roadbed construction
CN102691255A (en) * 2012-06-16 2012-09-26 山西省交通科学研究院 Method for quickly repairing cement concrete pavement
KR20150017445A (en) * 2013-08-06 2015-02-17 현대엔지니어링 주식회사 Precast concrete slabs using arc­tie bar connection
CN105563640A (en) * 2015-12-30 2016-05-11 江海燕 Manufacturing process for environment-friendly construction modularization tool type temporary road plate block
CN107513916A (en) * 2017-09-22 2017-12-26 中交第公路工程局有限公司 The imitative ice and snow road precast construction method of annular
CN107542017A (en) * 2017-08-28 2018-01-05 上海路港建设工程有限公司 A kind of assembled road construction method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831985A (en) * 2010-06-04 2010-09-15 北京万科企业有限公司 Precast concrete wallboard and preparation method thereof
CN102587265A (en) * 2012-02-21 2012-07-18 交通运输部公路科学研究所 Auxiliary component and concrete slab for roadbed construction and method for roadbed construction
CN102691255A (en) * 2012-06-16 2012-09-26 山西省交通科学研究院 Method for quickly repairing cement concrete pavement
KR20150017445A (en) * 2013-08-06 2015-02-17 현대엔지니어링 주식회사 Precast concrete slabs using arc­tie bar connection
CN105563640A (en) * 2015-12-30 2016-05-11 江海燕 Manufacturing process for environment-friendly construction modularization tool type temporary road plate block
CN107542017A (en) * 2017-08-28 2018-01-05 上海路港建设工程有限公司 A kind of assembled road construction method
CN107513916A (en) * 2017-09-22 2017-12-26 中交第公路工程局有限公司 The imitative ice and snow road precast construction method of annular

Similar Documents

Publication Publication Date Title
Vieira et al. Use of recycled construction and demolition materials in geotechnical applications: A review
Khodaii et al. Effects of geosynthetics on reduction of reflection cracking in asphalt overlays
CN107938676B (en) Pile foundation construction method for penetrating through full-filling karst cave
US4992003A (en) Unit comprising mesh combined with geotextile
CN101718086B (en) Concrete-enrockment mixed dam and construction method thereof
US7131788B2 (en) High-flow void-maintaining membrane laminates, grids and methods
US20050214075A1 (en) Protective element for a breakwater or wave-retarding construction
US8667752B2 (en) Interlocking construction systems and methods
US7470092B2 (en) System and method for reinforcing aggregate particles, and structures resulting therefrom
WO1997013923A1 (en) Method for constructing block paving
CN106013172B (en) Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace
CN101428982A (en) Fiber reinforcement material, products made therefrom, and method for making the same
US20100325819A1 (en) Bridge approach and abutment construction and method
CN102691300A (en) Construction method of foundation pit earthwork
CN106012697B (en) Ballastless track roadbed high polymer grouting lifting method
CN103615053B (en) Monolithic reinforced concrete structure post empiricism engineering method
CN104480963A (en) Construction method of retaining wall by a prefabricated module panel geogrid reinforcement tailing sand
Farnsworth et al. Rapid construction and settlement behavior of embankment systems on soft foundation soils
CN103774616A (en) Construction method for ecological retaining wall built by self-embedded blocks
CN101148891A (en) Rigid and flexible long-short pile composite foundation used for highway soft soil foundation treatment
CN106801517B (en) External reinforcing and reinforcing method for school shed with prefabricated porous plate brick mixed structure
CN105649093B (en) A kind of manufacture method for encircleing solid frame for public, railway tunnel
CN101787708A (en) Integrally-assembled cantilever-type retaining wall and construction method thereof
CN106320377B (en) A kind of rich water soft clay area deep basal pit covered back-digging construction method
CN106759126B (en) A kind of construction method of slope retaining drainage ditch

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination