CN115012269A - Prefabricated assembled cement concrete pavement and construction method thereof - Google Patents
Prefabricated assembled cement concrete pavement and construction method thereof Download PDFInfo
- Publication number
- CN115012269A CN115012269A CN202210408963.XA CN202210408963A CN115012269A CN 115012269 A CN115012269 A CN 115012269A CN 202210408963 A CN202210408963 A CN 202210408963A CN 115012269 A CN115012269 A CN 115012269A
- Authority
- CN
- China
- Prior art keywords
- pavement
- cement concrete
- preformed hole
- transverse
- prefabricated assembled
- 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
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 37
- 239000004568 cement Substances 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 claims description 7
- 239000011440 grout Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a prefabricated assembly type cement concrete pavement and a construction method thereof. The invention has the beneficial effects that: the prefabricated assembly type cement concrete pavement block is convenient for industrialized and standardized production, ensures the quality, better meets the requirements of national industrial policies, also improves the on-site construction progress, and is convenient for later-stage operation and expansion.
Description
Technical Field
The invention relates to the field of road engineering pavements, in particular to a prefabricated assembly type cement concrete pavement and a construction method thereof.
Background
At present, cement concrete pavements and asphalt concrete pavements are mainly adopted in the field of road engineering pavements. The cement concrete pavement is mostly cast in place, and has the following characteristics in the aspects of design, construction, operation, extension and the like: in the design aspect, the transverse joint of the traditional cement concrete pavement is a weak link of the concrete pavement, the load transfer capacity is enhanced by arranging a dowel bar, and the arrangement of the dowel bar causes construction inconvenience, so that most cement concrete pavements in China are not provided with the dowel bar, and the service life of the pavement is influenced; in the aspect of construction, the construction period is long due to in-situ pouring, the influence of the environment is large, the quality is difficult to control, meanwhile, the environment is greatly polluted due to in-situ construction, the pavement maintenance time is relatively long and is generally not less than 14-21 d; in the aspect of operation, the cement concrete pavement is damaged and maintained for a long time, so that the road closing time is also long, the running of vehicles is seriously influenced, and hidden dangers are left for traffic safety; in the aspect of extension, the extension of the existing cement concrete pavement causes that the extension and widening quality is difficult to ensure.
Disclosure of Invention
The invention aims to provide a prefabricated assembly type cement concrete pavement and a construction method thereof, which solve the problems in the prior art.
The technical scheme for solving the technical problems is as follows:
the prefabricated assembled cement concrete pavement comprises a pavement block body, wherein the vertical two ends of the pavement block body are respectively provided with a tenon and a mortise, the horizontal two ends of the pavement block body are respectively provided with a horizontal preformed hole, the upper surface of the pavement block body is provided with a vertical preformed hole, each horizontal preformed hole is matched with one vertical preformed hole, and the vertical preformed holes are communicated with the horizontal preformed holes.
The invention has the beneficial effects that: in the road surface work progress, connect a plurality of road surface piece bodies in proper order through tenon and tongue-and-groove, form first lane. Inserting a connecting lantern ring into a transverse reserved hole on the side, needing widening, of the first lane, inserting a pull rod into the connecting lantern ring in a penetrating mode, sleeving transverse reserved holes of a plurality of pavement block bodies on the connecting lantern ring and the pull rod, and ensuring that the pavement blocks are sequentially connected through tenons and mortises to form a second lane; grouting is carried out from one vertical preformed hole corresponding to each pull rod, grout is made to emerge from the other vertical preformed hole corresponding to each pull rod, and grouting of the horizontal preformed hole and the vertical preformed hole corresponding to each pull rod is completed.
The prefabricated assembly type cement concrete pavement block is convenient for industrialized and standardized production, ensures the quality, better meets the requirements of national industrial policies, and can be designed into different shapes to meet the requirements of different road shapes. The construction progress is greatly improved, if the road is a single lane road, the vehicle can be communicated after pavement is finished, and if the road is a double lane or multi-lane road, the vehicle can be communicated after the grouting connection of the transverse preformed holes is finished; the holes are reserved on the two sides of the road surface, and the road surface can be expanded after grouting after the connecting lantern rings and the pull rods are directly inserted in the later period; the maintenance is convenient for the later maintenance, if the pavement is damaged, the damaged pavement block can be replaced in time, the maintenance difficulty and the field operation time are reduced, and the influence on the field traffic is reduced; the tenon-and-mortise structure is adopted, so that the construction cost is saved, the joint load transfer capacity is enhanced, the construction amount of the force transfer rod is reduced, and the complex procedures during cast-in-place construction are avoided. And the cooperation of tenon and tongue-and-groove has realized the alignment of horizontal preformed hole and pull rod in the installation, does benefit to the accurate and convenient cover of horizontal preformed hole and locates on the pull rod.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the vertical preformed hole is provided with a hanging ring.
Further, two horizontal preformed holes have all been seted up at the horizontal both ends of road surface piece body, and two horizontal preformed holes are located the both ends of the horizontal end of road surface piece body.
Further, the lower surface of the pavement block body is provided with a groove.
Furthermore, the upper surface of the pavement block body is provided with carved patterns.
Furthermore, the upper surface of the pavement block body is provided with traffic markings.
Further, the construction method comprises the following steps:
Further, the construction method also comprises the following steps:
Furthermore, the material of connecting the lantern ring is plastics, and the pull rod is the twisted steel.
Furthermore, the gaps between the adjacent pavement blocks in the same lane are transverse seams, and the transverse seams of the adjacent lanes are aligned; the gaps between the pavement blocks between adjacent lanes are longitudinal seams, and the transverse seams are perpendicular to the corresponding longitudinal seams.
Drawings
FIG. 1 is a schematic structural view of a prefabricated assembled cement concrete pavement according to the present invention;
FIG. 2 is a cross-sectional view in the width direction of a panel of a prefabricated cement concrete pavement according to the present invention;
FIG. 3 is a schematic view of the installation and construction of a prefabricated cement concrete pavement according to the present invention;
FIG. 4 is a longitudinal joint structural view of a prefabricated assembled cement concrete pavement according to the present invention;
FIG. 5 is a schematic view of the pavement of a prefabricated assembled cement concrete pavement according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the pavement block comprises a pavement block body, 2, lifting rings, 3, vertical preformed holes, 4, transverse preformed holes, 5, tenons, 6, mortises, 7, traffic marked lines, 8, grooves, 9, grooves, 10, connecting lantern rings, 11, pull rods, 12, longitudinal joints, 13, grout, 15 and transverse joints.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the prefabricated assembly type cement concrete pavement block of embodiment 1 of the present invention includes a pavement block body 1, wherein vertical ends of the pavement block body 1 are respectively provided with a tenon 5 and a mortise 6, horizontal ends of the pavement block body 1 are both provided with horizontal preformed holes 4, the upper surface of the pavement block body 1 is provided with vertical preformed holes 3, each horizontal preformed hole 4 is provided with one vertical preformed hole 3 in a matching manner, and the vertical preformed holes 3 are communicated with the horizontal preformed holes 4.
In the road surface construction process, connect a plurality of road surface piece bodies 1 in proper order through tenon 5 and tongue-and-groove 6, form first lane. Inserting a connecting lantern ring 10 into a transverse preformed hole 4 on the side needing widening of the first lane, inserting a pull rod 11 into the connecting lantern ring 10 in a penetrating mode, sleeving the transverse preformed holes 4 of the plurality of pavement block bodies 1 on the connecting lantern ring 10 and the pull rod 11, and ensuring that the plurality of pavement blocks are sequentially connected through the tenon 5 and the mortise 6 to form a second lane; grouting is carried out from one vertical preformed hole 3 corresponding to each pull rod 11, grout 13 is made to emerge from the other vertical preformed hole 3 corresponding to each pull rod 11, and grouting of the horizontal preformed hole 4 and the vertical preformed hole 3 corresponding to each pull rod 11 is completed.
The prefabricated assembly type cement concrete pavement block is convenient for industrialized and standardized production, better meets the requirements of national industrial policies, and can be designed into different shapes to meet the requirements of different road shapes. The construction progress is greatly improved, if the road is a single lane road, the vehicle can be communicated after paving is finished, and if the road is a double lane or multi-lane road, the vehicle can be communicated after grouting connection of the transverse preformed holes 4 is finished; the holes are reserved on the two sides of the pavement, and the connection lantern ring 10 and the pull rod 11 are directly inserted in the later period for grouting, so that the pavement extension can be completed; the maintenance is convenient for the later maintenance, if the pavement is damaged, the damaged pavement block can be replaced in time, the maintenance difficulty and the field operation time are reduced, and the influence on the field traffic is reduced; the tenon-and-mortise structure is adopted to save the construction cost, enhance the joint load transfer capacity, reduce the construction amount of the dowel bar and avoid the complex procedures in cast-in-place construction, and the cooperation of the tenon 5 and the mortise 6 realizes the alignment of the transverse preformed hole 4 and the pull rod 11 in the installation process, and is favorable for the accurate and convenient sleeve of the transverse preformed hole 4 to be arranged on the pull rod 11.
The embodiment 2 of the invention relates to a prefabricated assembly type cement concrete pavement block, and a hanging ring 2 is arranged in a vertical preformed hole 3 on the basis of the embodiment 1. In the road surface work progress, through install the lifting hook on rings 2, can conveniently lift by crane equipment and lift by crane road surface body 1.
In embodiment 3 of the present invention, based on embodiment 2, two transverse preformed holes 4 are respectively formed at two transverse ends of a pavement block body 1, and the two transverse preformed holes 4 are located at two ends of the transverse end of the pavement block body 1. Two horizontal preformed holes 4 that are located the both ends of the horizontal end of road surface body 1 realize treating the firm fixed of concatenation road surface body 1, and 4 horizontal preformed holes 4 correspond 4 rings at the upper surface of road surface body, and the equipment of being convenient for lift by crane steadily lifts by crane the road surface body.
In embodiment 4 of the invention, based on embodiment 1, a groove 8 is formed in the lower surface of a pavement block body 1. The grooves 8 can increase the friction force between the prefabricated pavement and the roadbed, and the tangential slip is avoided.
In embodiment 5 of the invention, on the basis of embodiment 1, the upper surface of a pavement block body 1 is provided with a sculpture 9. The score 9 increases the slip resistance.
In embodiment 6 of the invention, on the basis of embodiment 1, the upper surface of a pavement block body 1 is provided with traffic markings 7. When the pavement block body 1 is prefabricated, the traffic marking 7 is coated on the upper surface of the pavement block body 1, and the quality of a finished product of the traffic marking 7 is easier to control.
The embodiment 7 of the invention relates to a construction method of a prefabricated assembled cement concrete pavement, which adopts any one of the pavement blocks of the embodiments 1 to 6 and comprises the following steps:
The embodiment 8 of the invention relates to a construction method of a prefabricated assembled cement concrete pavement, which further comprises the following steps based on the embodiment 7:
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a prefabricated assembled cement concrete pavement piece, a serial communication port, includes road block body (1), the vertical both ends of road block body (1) are provided with tenon (5) and tongue-and-groove (6) respectively, horizontal preformed hole (4) have all been seted up at the horizontal both ends of road block body (1), vertical preformed hole (3), every have been seted up to the upper surface of road block body (1) horizontal preformed hole (4) match and set up one vertical preformed hole (3), just vertical preformed hole (3) with horizontal preformed hole (4) are linked together.
2. The prefabricated assembled cement concrete pavement block according to claim 1, characterized in that said vertical preformed hole (3) is provided with a suspension ring (2).
3. The prefabricated assembled cement concrete pavement block according to claim 2, wherein two transverse preformed holes (4) are opened at both transverse ends of the pavement block body (1), and the two transverse preformed holes (4) are positioned at both transverse ends of the pavement block body (1).
4. The prefabricated assembled cement concrete pavement block according to claim 1, wherein the lower surface of the pavement block body (1) is provided with a groove (8).
5. The prefabricated assembled cement concrete pavement block according to claim 1, wherein the upper surface of the pavement block body (1) is provided with an engraving (9).
6. The prefabricated assembled cement concrete pavement block according to claim 1, wherein the upper surface of the pavement block body (1) is provided with traffic markings (7).
7. A method of constructing a prefabricated assembled cement concrete slab, using the prefabricated assembled cement concrete slab of any one of claims 1 to 6, said method comprising the steps of:
step 1, connecting a plurality of pavement blocks in sequence through the tenons (5) and the mortises (6) to form a first lane.
8. A method of constructing a precast fabricated cement concrete pavement according to claim 7, further comprising the steps of:
step 2, inserting a connecting lantern ring (10) into a transverse preformed hole (4) on the side needing widening of the first lane, inserting a pull rod (11) through the connecting lantern ring (10), sleeving the transverse preformed holes (4) of the plurality of pavement block bodies (1) on the connecting lantern ring (10) and the pull rod (11), and ensuring that the plurality of pavement block bodies (1) are sequentially connected through the tenons (5) and the mortises (6) to form a second lane; and grouting is carried out on the vertical preformed hole (3) corresponding to each pull rod (11), grout (13) is made to flow out of the vertical preformed hole (3) corresponding to each pull rod (11), and grouting of the horizontal preformed hole (4) and the vertical preformed hole (3) corresponding to each pull rod (11) is completed.
9. A method for constructing a prefabricated assembled cement concrete pavement according to claim 7, wherein the connecting lantern ring (10) is made of plastic, and the pull rod (11) is made of twisted steel.
10. A prefabricated assembled cement concrete pavement construction method according to claim 7, wherein the gap between adjacent pavement blocks in the same lane is a transverse joint (15), and the transverse joints (15) of adjacent lanes are aligned; the gap between the pavement blocks between adjacent lanes is a longitudinal seam (12), and the transverse seam (15) is perpendicular to its corresponding longitudinal seam (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408963.XA CN115012269A (en) | 2022-04-19 | 2022-04-19 | Prefabricated assembled cement concrete pavement and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408963.XA CN115012269A (en) | 2022-04-19 | 2022-04-19 | Prefabricated assembled cement concrete pavement and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115012269A true CN115012269A (en) | 2022-09-06 |
Family
ID=83066991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210408963.XA Pending CN115012269A (en) | 2022-04-19 | 2022-04-19 | Prefabricated assembled cement concrete pavement and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115012269A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202730578U (en) * | 2012-06-16 | 2013-02-13 | 山西省交通科学研究院 | Multifunctional special lifting ring for precast assembled cement concrete pavement |
| KR20150017812A (en) * | 2013-08-07 | 2015-02-23 | 현대엔지니어링 주식회사 | Precast concrete slabs pavement using arc tiebar connection and its construction method |
| CN104612018A (en) * | 2014-12-25 | 2015-05-13 | 东南大学 | Dowel bar with combined structure for cement concrete pavements and durable stitch contracting structure |
| KR101544988B1 (en) * | 2014-12-15 | 2015-08-18 | 우백건설 주식회사 | Precast concrete panel and its manufacturing and paving method using the same |
| CN205711596U (en) * | 2016-05-31 | 2016-11-23 | 沈阳建筑大学 | Assembled oblique bond-retarded prestressed concrete pavement structure |
| CN110644323A (en) * | 2019-09-10 | 2020-01-03 | 中交武汉港湾工程设计研究院有限公司 | Pavement slab, pavement structure and construction method suitable for temporary road soft soil foundation |
| CN111676759A (en) * | 2020-05-07 | 2020-09-18 | 中国一冶集团有限公司 | Assembly type temporary construction road and construction method |
| CN112609527A (en) * | 2020-12-16 | 2021-04-06 | 中铁十一局集团第五工程有限公司 | Invisible joint and hoisting hole site steel fiber concrete pavement slab and fabricated pavement |
| CN113774746A (en) * | 2021-09-03 | 2021-12-10 | 福建省大地管桩有限公司 | Pretensioned prestressed concrete assembled pavement and preparation method thereof |
| CN114032724A (en) * | 2021-09-18 | 2022-02-11 | 同济大学 | Assembled recycled concrete rural pavement |
| CN216237943U (en) * | 2021-11-16 | 2022-04-08 | 郑州大学 | Rural highway cement concrete pavement assembled structure of small traffic |
-
2022
- 2022-04-19 CN CN202210408963.XA patent/CN115012269A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202730578U (en) * | 2012-06-16 | 2013-02-13 | 山西省交通科学研究院 | Multifunctional special lifting ring for precast assembled cement concrete pavement |
| KR20150017812A (en) * | 2013-08-07 | 2015-02-23 | 현대엔지니어링 주식회사 | Precast concrete slabs pavement using arc tiebar connection and its construction method |
| KR101544988B1 (en) * | 2014-12-15 | 2015-08-18 | 우백건설 주식회사 | Precast concrete panel and its manufacturing and paving method using the same |
| CN104612018A (en) * | 2014-12-25 | 2015-05-13 | 东南大学 | Dowel bar with combined structure for cement concrete pavements and durable stitch contracting structure |
| CN205711596U (en) * | 2016-05-31 | 2016-11-23 | 沈阳建筑大学 | Assembled oblique bond-retarded prestressed concrete pavement structure |
| CN110644323A (en) * | 2019-09-10 | 2020-01-03 | 中交武汉港湾工程设计研究院有限公司 | Pavement slab, pavement structure and construction method suitable for temporary road soft soil foundation |
| CN111676759A (en) * | 2020-05-07 | 2020-09-18 | 中国一冶集团有限公司 | Assembly type temporary construction road and construction method |
| CN112609527A (en) * | 2020-12-16 | 2021-04-06 | 中铁十一局集团第五工程有限公司 | Invisible joint and hoisting hole site steel fiber concrete pavement slab and fabricated pavement |
| CN113774746A (en) * | 2021-09-03 | 2021-12-10 | 福建省大地管桩有限公司 | Pretensioned prestressed concrete assembled pavement and preparation method thereof |
| CN114032724A (en) * | 2021-09-18 | 2022-02-11 | 同济大学 | Assembled recycled concrete rural pavement |
| CN216237943U (en) * | 2021-11-16 | 2022-04-08 | 郑州大学 | Rural highway cement concrete pavement assembled structure of small traffic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105088937B (en) | Hollow slab bridge with hinge joint having opposite grooves and building method of hollow slab bridge | |
| CN106436592B (en) | A kind of bridge using Z bar plate connector spells wide construction and its construction method | |
| CN202227284U (en) | Bridge widening split joint structure | |
| CN203080430U (en) | Assembly and cast-in-place combined type reinforced concrete pipe type culvert | |
| CN206737118U (en) | A kind of prefabricated regeneration concrete bean column node of reinforcement | |
| CN113152185A (en) | Full-assembly type road with pile plate roadbed supporting prefabricated pavement and construction method thereof | |
| CN201865037U (en) | Assembly type hollow slab bridge transferring force by adopting bracket instead of ribbet | |
| CN206298836U (en) | A kind of bridge of use Z bar plate connector spells construction wide | |
| CN203890868U (en) | Hollow slab bridge with joints with corresponded grooves | |
| CN110700873A (en) | Prefabricated rail top air duct for subway station and construction method thereof | |
| CN115012269A (en) | Prefabricated assembled cement concrete pavement and construction method thereof | |
| CN110056071B (en) | Municipal rainwater pipeline assembly module and construction method | |
| CN207934905U (en) | A kind of shield tunnel tunnel bottom backfills precast construction | |
| CN111074767A (en) | Double-block type prefabricated assembled anti-collision guardrail and construction method | |
| CN202466390U (en) | Hollow slab bridge | |
| CN106088142B (en) | A kind of prefabricated assembled pipeline foundation and its assembly method | |
| CN212582727U (en) | Modular assembly type retaining wall | |
| CN210481900U (en) | Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same | |
| CN211395192U (en) | Base end structure of box road | |
| CN206529668U (en) | The recyclable assembled pavement structure of no-dig technique | |
| CN210134293U (en) | Horizontal lattice type prefabricated assembly segment and high-speed railway foundation assembled by same | |
| CN210263015U (en) | Prefabricated wall unit for underground continuous wall | |
| CN106149538A (en) | A kind of slab bridge | |
| CN110617081B (en) | Prefabricated inverted arch structure of highway tunnel assembled | |
| CN213448968U (en) | Assembled concrete wall body of quality is connected to easy control node |
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 |