CN114808729B - Positioning device for pre-buried pre-stress corrugated pipe in box girder - Google Patents
Positioning device for pre-buried pre-stress corrugated pipe in box girder Download PDFInfo
- Publication number
- CN114808729B CN114808729B CN202210525877.7A CN202210525877A CN114808729B CN 114808729 B CN114808729 B CN 114808729B CN 202210525877 A CN202210525877 A CN 202210525877A CN 114808729 B CN114808729 B CN 114808729B
- Authority
- CN
- China
- Prior art keywords
- conical
- long arc
- expansion pipe
- neck
- expansion
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A locating device of a pre-buried pre-stress corrugated pipe in a box girder relates to a locating frame, the middle part of a conical expansion pipe (12) is sleeved in a long arc hole A (6) in a sliding way, a sleeve ring A (2) and a sleeve ring B (8) limit the conical expansion pipe (12) in the long arc hole A (6) so that the conical expansion pipe (12) can only slide in the long arc hole A (6) and can not axially move along the axis of the conical expansion pipe (12), and a plurality of support rods are sleeved in the long arc hole A (6) at intervals; according to the invention, the vertical plates are respectively arranged outside two sides of the V-shaped box girder steel bar frame, the long arc holes with the same parabolic shape are arranged on the vertical plates according to the parabolic shape of the prestress corrugated pipe required to be installed in the V-shaped box girder steel bar frame, and the plurality of support rods are arranged in the long arc holes at intervals, so that the inserted rods arranged on the support rods extend into the V-shaped box girder steel bar frame to support the prestress corrugated pipe required to be installed, and the purpose of profiling and positioning the prestress corrugated pipe required to be installed is realized.
Description
Technical Field
The invention relates to a positioning frame, in particular to a positioning device for pre-burying a pre-stressing corrugated pipe in a box girder.
Background
The prestress system of the bridge is the core content borne by the bridge structure. In the construction process of the cast-in-situ box girder of the bridge engineering, the prestressed corrugated pipe is required to be arranged in a steel bar frame of the box girder in the steel bar binding process before concrete pouring. When the prestress corrugated pipe is installed in the V-shaped box girder steel bar frame, whether the vertical coordinate of the prestress corrugated pipe is precisely key to the construction quality of the cast-in-situ prestress box girder is an important guarantee whether the design bearing capacity of the cast-in-situ prestress box girder is realized or not, and the structural stress safety of the cast-in-situ prestress box girder is directly related, so that the erection of the prestress corrugated pipe is required to be accurately positioned. Because the V-shaped box girder steel bar frame of the box girder is provided with the V-shaped steel bar frame and the transverse steel bars, when the prestress corrugated pipe is positioned, the positioning frame is not easy to place, and the measuring device is not easy to measure under the interference of the steel bar frame. The prestress corrugated pipes are arranged in the steel bar frames of the box girder in a smooth parabolic mode, and each part of the prestress corrugated pipes cannot have scale deviation up and down and left and right. Therefore, a large amount of manpower and material resources are needed for adjustment during erection of the prestressed corrugated pipe, the precision is difficult to ensure, time and labor are wasted, and the construction progress is influenced.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a positioning device for pre-buried pre-stressed corrugated pipes in a box girder, which is characterized in that vertical plates are respectively arranged outside two sides of a V-shaped box girder steel bar frame, long arc holes with the same parabolic shape are arranged on the vertical plates according to the parabolic shape of the pre-stressed corrugated pipes to be installed in the V-shaped box girder steel bar frame, and a plurality of support rods are arranged in the long arc holes at intervals, so that inserted rods arranged on the support rods extend into the V-shaped box girder steel bar frame to support the pre-stressed corrugated pipes to be installed, and the aim of profiling and positioning the pre-stressed corrugated pipes to be installed is fulfilled.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the locating device for the pre-buried prestressed corrugated pipe in the box girder comprises a supporting frame, wherein the supporting frame comprises a vertical plate and a supporting rod, a long arc hole A is transversely arranged between two opposite vertical surfaces of the vertical plate, the aperture of the long arc hole A is one side of the expansion neck, the other side of the expansion neck is necked, the supporting rod comprises a conical expansion pipe and a conical rod, the conical expansion pipe is one side of the expansion neck, the conical expansion pipe is internally provided with a conical hole penetrating through the space between two bottoms of the conical expansion pipe, the expansion end of the conical hole is positioned at the expansion end of the conical expansion pipe, the necking end of the conical hole is positioned at the necking end of the conical expansion pipe, the necking end of the conical rod is fixedly connected with one end of an inserting rod, the other end of the inserting rod is positioned outside the necking end of the conical hole after passing through the conical hole along the expansion end of the conical hole, the conical rod is arranged in the conical hole in a sliding sleeve joint at the middle of the conical expansion pipe, the neck expanding end of the conical expansion pipe is positioned at the neck expanding end of the long arc hole A, the neck contracting end of the conical expansion pipe is positioned at the neck contracting end of the long arc hole A, a sleeve ring A is sleeved on the neck expanding end of the conical expansion pipe positioned outside the long arc hole A, a sleeve ring B is sleeved on the neck contracting end of the conical expansion pipe positioned outside the long arc hole A, the sleeve ring A and the sleeve ring B limit the conical expansion pipe in the long arc hole A so that the conical expansion pipe can only slide in the long arc hole A and can not axially move along the axis of the conical expansion pipe, a plurality of expansion joints which are externally communicated with the inner periphery of the sleeve ring A and are communicated with the conical hole are arranged between the neck expanding end of the conical expansion pipe and the middle part of the conical expansion pipe at intervals, a plurality of support rods are sleeved in the long arc hole A at intervals, and the two support frames are oppositely arranged at two sides of the base according to the neck contracting ends of the two long arc holes A.
And the lower ends of the two supporting frames are fixedly connected with the two sides of the base respectively.
The locating device of the pre-buried prestressed corrugated pipe in the box girder is characterized in that a plurality of long arc holes A are formed in each supporting frame at intervals, and a plurality of sets of supporting rods are arranged in each long arc hole A at intervals.
The locating device of the pre-buried prestressed corrugated pipe in the box girder is characterized in that the opening parts at the two sides of the long arc hole A are parabolic shapes with high ends and low middle parts.
And the locating device of the pre-buried prestressed corrugated pipe in the box girder is characterized in that the inserted rod is vertical to the vertical plate after the conical rod is inserted into the conical expansion pipe.
The locating device of the pre-buried prestressing force bellows in the case roof beam, be equipped with the handle at the expansion neck end of awl pole.
The locating device of the pre-buried prestressed corrugated pipe in the box girder is provided with anti-skid lines on the handle.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the positioning device for the pre-buried pre-stressed corrugated pipe in the box girder, the vertical plates are respectively arranged outside two sides of the V-shaped box girder steel bar frame, the long arc holes with the same parabolic shape are arranged on the vertical plates according to the parabolic shape of the pre-stressed corrugated pipe to be installed in the V-shaped box girder steel bar frame, and the plurality of support rods are arranged at intervals in the long arc holes, so that the inserted rods arranged on the support rods extend into the V-shaped box girder steel bar frame to support the pre-stressed corrugated pipe to be installed, the defect that the positioning of the pre-stressed corrugated pipe is interfered by the V-shaped steel bar frame and the transverse steel bar arranged on the V-shaped box girder steel bar frame, and a measuring tool cannot accurately measure at any time is overcome, and the purpose of profiling positioning the pre-stressed corrugated pipe to be installed is realized; the invention has the advantages of unique design, reasonable structure, convenient operation and high precision, effectively improves the construction speed, has good use effect and has wide market prospect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the cooperation of the vertical plate and the supporting rod;
FIG. 4 is a schematic diagram of the configuration of a tapered expansion tube and tapered rod fitting;
FIG. 5 is a schematic view of the structure of the present invention in use;
fig. 6 is a schematic structural view of the V-shaped box girder reinforcing steel bar frame of the present invention;
fig. 7 is a schematic structural view of the V-shaped reinforcing bar frame of the present invention.
In the figure: 1. a base; 2. a collar A; 3. a handle; 4. a vertical plate; 5. v-shaped steel bar frame; 6. a long arc hole A; 7. a taper rod; 8. a collar B; 9. a pre-stressed corrugated pipe; 10. a rod; 11. taper holes; 12. a conical expansion tube; 13. an expansion joint; 14. v-shaped box girder steel bar frame; 15. transverse steel bars.
Detailed Description
The invention will be explained in more detail by the following examples, which are not intended to limit the invention thereto, and the purpose of the present invention is to protect all changes and modifications within the scope of the invention;
the positioning device for the pre-buried prestressed corrugated pipe in the box girder, which is described with reference to figures 1-4, comprises a supporting frame, wherein the supporting frame comprises a vertical plate 4 and a supporting rod, a long arc hole A6 is transversely arranged between two opposite vertical surfaces of the vertical plate 4, the aperture of the long arc hole A6 is formed by expanding one side and necking the other side, the supporting rod comprises a conical expansion pipe 12 and a conical rod 7, the conical expansion pipe 12 is formed by expanding one side and necking the other side, a conical hole 11 penetrating through the space between two bottoms of the conical expansion pipe 12 is arranged in the conical expansion pipe 12, the expanding neck end of the conical hole 11 is positioned at the expanding neck end of the conical expansion pipe 12, the necking end of the conical rod 7 is fixedly connected with one end of an inserting rod 10, the other end of the inserting rod 10 is positioned outside the necking end of the conical hole 11 after passing through the conical hole 11 along the expanding neck end of the conical hole 11, the conical rod 7 is arranged in the conical hole 11, a handle 3 is arranged at the expanding neck end of the conical rod 7, anti-skid patterns are arranged on the handle 3, the middle part of the conical expansion tube 12 is slidably sleeved in the long arc hole A6, the neck expansion end of the conical expansion tube 12 is positioned at the neck expansion end of the long arc hole A6, the neck compression end of the conical expansion tube 12 is positioned at the neck compression end of the long arc hole A6, a sleeve ring A2 is sleeved on the neck expansion end of the conical expansion tube 12 positioned outside the long arc hole A6, a sleeve ring B8 is sleeved on the neck compression end of the conical expansion tube 12 positioned outside the long arc hole A6, the sleeve ring A2 and the sleeve ring B8 limit the conical expansion tube 12 in the long arc hole A6 so that the conical expansion tube 12 can only slide in the long arc hole A6 and can not axially move along the axis of the conical expansion tube 12, a plurality of expansion joints 13 which are externally penetrated through the outer edge of the sleeve ring A2 and internally penetrated by the conical hole 11 are arranged between the neck expansion end of the conical expansion tube 12 and the middle part of the conical expansion tube 12 at intervals, the support rods are sleeved in the long arc hole A6 at intervals, each support frame is provided with a plurality of long arc holes A6 at intervals, a plurality of sets of support rods are arranged in each long arc hole A6 at intervals, the opening parts at two sides of each long arc hole A6 are in parabolic shapes with high ends and low middle parts, the number of the support frames is two, the support frames are oppositely arranged at two sides of the base 1 according to the necking ends of the two long arc holes A6, the lower ends of the two support frames are fixedly connected with two sides of the base 1 respectively, and the inserted rod 10 and the vertical plate 4 are vertical after the conical rod 7 is inserted into the conical expansion pipe 12.
When the positioning device for embedding the pre-stressing corrugated pipe in the box girder is used in combination with the attached drawings 5 to 7, a plurality of V-shaped reinforcing steel bar frames 5 and a plurality of transverse reinforcing steel bars 15 are bundled into a V-shaped box girder reinforcing steel bar frame 14, the V-shaped box girder reinforcing steel bar frame 14 with the pre-stressing corrugated pipe 9 is hoisted to the top of the positioning device, the bottom of the V-shaped box girder reinforcing steel bar frame 14 is contacted with the top of the base 1, two outer side walls of the V-shaped box girder reinforcing steel bar frame 14 are respectively contacted with two supporting frames, the two supporting frames provide support for the two outer side walls of the V-shaped box girder reinforcing steel bar frame 14, the plurality of conical expansion pipes 12 in each long arc hole A6 are moved to proper positions, the distances among the plurality of conical expansion pipes 12 in each long arc hole A6 can smoothly support the pre-stressing corrugated pipe 9 which is required to be installed in the V-shaped box girder reinforcing steel bar frame 14 according to the parabola shape with high middle low at two ends, the conical rods 7 are respectively inserted into the conical expansion pipes 12, so that the inserted rods 10 arranged on each conical rod 7 respectively extend into the V-shaped box girder steel bar frame 14 to support the corresponding prestress corrugated pipes 9 in the V-shaped box girder steel bar frame 14, the V-shaped box girder steel bar frame 14 is of a nearly horizontal and vertical frame structure formed by bundling a plurality of V-shaped steel bar frames 5 and a plurality of transverse steel bars 15, the long arc holes A6 are of a parabolic shape with high ends and low middle parts, so that part of inserted rods 10 are blocked by one V-shaped steel bar frame 5 or one transverse steel bar 15 when inserted into the V-shaped box girder steel bar frame 14, the conical rods 7 are required to be pulled out, the conical expansion pipes 12 at the blocked positions of the inserted rods 10 are moved left and right to proper positions, because the long arc hole A6 can just play a role in the prestress corrugated pipe 9 with a required parabolic shape by the inserting rods 10 after the conical rods 7 are inserted, the small-range left or right movement of part of the conical expansion pipe 12 does not influence the effective support of the inserting rods 10 on the prestress corrugated pipe 9, and the arrangement of the expansion joint 13 ensures that the conical rods 7 can lock the conical expansion pipe 12 from displacement in the long arc hole A6 after the conical rods 7 are inserted into the conical expansion pipe 12; the defect that the measuring tool cannot accurately measure the prestress corrugated pipe 9 in real time is overcome, and the aim of profiling and positioning the prestress corrugated pipe 9 to be installed is fulfilled.
The invention is not described in detail in the prior art.
Claims (7)
1. A locating device for pre-buried prestressed corrugated pipes in box girders is characterized in that: the support comprises a support frame, the support frame comprises a vertical plate (4) and a support rod, a long arc hole A (6) is transversely arranged between two opposite vertical surfaces of the vertical plate (4), the aperture of the long arc hole A (6) is one-side neck expansion and the other side neck, the support rod comprises a conical expansion pipe (12) and a conical rod (7), the conical expansion pipe (12) is one-side neck expansion and the other side neck, a conical hole (11) penetrating through the conical expansion pipe (12) between two bottoms of the conical expansion pipe (12) is arranged in the conical expansion pipe (12), the neck expansion end of the conical hole (11) is positioned at the neck expansion end of the conical expansion pipe (12), the neck expansion end of the conical rod (11) is fixedly connected with one end of the conical rod (7), the other end of the conical rod (10) is positioned outside the neck expansion end of the conical hole (11) after passing through the neck expansion end of the conical hole (11), the middle part of the conical expansion pipe (12) is sleeved in the long arc hole A (6), the neck expansion end of the conical rod (12) is positioned at the neck expansion end of the conical expansion pipe (6A (12) and the neck expansion end of the conical expansion pipe (6) is positioned at the outer end of the neck expansion pipe (12), the conical expansion pipe (12) outside the long arc hole A (6) is sleeved with a sleeve ring B (8) at the necking end, the sleeve ring A (2) and the sleeve ring B (8) limit the conical expansion pipe (12) in the long arc hole A (6), the conical expansion pipe (12) can only slide in the long arc hole A (6) and cannot axially move along the axis of the conical expansion pipe (12), a plurality of expansion joints (13) which are communicated with the inner through conical holes (11) at the outer edge of the sleeve ring A (2) are arranged between the neck expansion end of the conical expansion pipe (12) and the middle of the conical expansion pipe (12) at intervals around the axis of the conical expansion pipe (12), the support rods are sleeved in the long arc hole A (6) at intervals, and the two support frames are oppositely arranged at two sides of the base (1) according to the necking ends of the two long arc holes A (6).
2. The positioning device for pre-buried pre-stressed corrugated pipes in box girders according to claim 1, which is characterized in that: the lower ends of the two supporting frames are fixedly connected with the two sides of the base (1) respectively.
3. The positioning device for pre-buried pre-stressed corrugated pipes in box girders according to claim 1, which is characterized in that: a plurality of long arc holes A (6) are formed in each supporting frame at intervals, and a plurality of sets of supporting rods are arranged in each long arc hole A (6) at intervals.
4. A positioning device for pre-buried pre-stressed corrugated pipes in box girders according to claim 3, characterized in that: the opening parts at the two sides of the long arc hole A (6) are parabolic shapes with high ends and low middle parts.
5. The positioning device for pre-buried pre-stressed corrugated pipes in box girders according to claim 1, which is characterized in that: the taper rod (7) is inserted into the taper expansion pipe (12), and the rear inserting rod (10) is vertical to the vertical plate (4).
6. The positioning device for pre-buried pre-stressed corrugated pipes in box girders according to claim 1, which is characterized in that: the neck-expanding end of the taper rod (7) is provided with a handle (3).
7. The positioning device for the pre-buried pre-stressed corrugated pipe in the box girder according to claim 6, wherein the positioning device is characterized in that: the handle (3) is provided with anti-skid patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525877.7A CN114808729B (en) | 2022-05-16 | 2022-05-16 | Positioning device for pre-buried pre-stress corrugated pipe in box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525877.7A CN114808729B (en) | 2022-05-16 | 2022-05-16 | Positioning device for pre-buried pre-stress corrugated pipe in box girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114808729A CN114808729A (en) | 2022-07-29 |
| CN114808729B true CN114808729B (en) | 2023-06-02 |
Family
ID=82514962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210525877.7A Active CN114808729B (en) | 2022-05-16 | 2022-05-16 | Positioning device for pre-buried pre-stress corrugated pipe in box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114808729B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030610A (en) * | 2000-05-12 | 2002-01-31 | Totaku Kogyo Kk | Joining method of precast segment for pc bridge and end part member of segment and sheath used for it |
| CN202055414U (en) * | 2011-03-29 | 2011-11-30 | 中国一冶集团有限公司 | Fast positioning device for bellows in pre-stress box girder |
| CN103911952A (en) * | 2014-03-28 | 2014-07-09 | 中交第一航务工程局有限公司 | Positioning construction method of prestressed steel corrugated pipe |
| CN104675023A (en) * | 2013-11-29 | 2015-06-03 | 甘肃路桥建设集团有限公司 | Accurate positioning device for corrugated pipe |
| CN206591442U (en) * | 2017-02-24 | 2017-10-27 | 中国建筑第六工程局有限公司 | A kind of corrugated pipe pipeline positioner for Precast T-Beam |
| CN112008856A (en) * | 2020-09-30 | 2020-12-01 | 中国建筑第七工程局有限公司 | Be applied to bed-jig of prefabricated case roof beam framework of steel reinforcement shaping and bellows installation |
| CN112482247A (en) * | 2020-11-21 | 2021-03-12 | 江苏永联精筑建设集团有限公司 | End template for cantilever beam hanging basket construction and cantilever beam hanging basket pouring construction method |
-
2022
- 2022-05-16 CN CN202210525877.7A patent/CN114808729B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030610A (en) * | 2000-05-12 | 2002-01-31 | Totaku Kogyo Kk | Joining method of precast segment for pc bridge and end part member of segment and sheath used for it |
| CN202055414U (en) * | 2011-03-29 | 2011-11-30 | 中国一冶集团有限公司 | Fast positioning device for bellows in pre-stress box girder |
| CN104675023A (en) * | 2013-11-29 | 2015-06-03 | 甘肃路桥建设集团有限公司 | Accurate positioning device for corrugated pipe |
| CN103911952A (en) * | 2014-03-28 | 2014-07-09 | 中交第一航务工程局有限公司 | Positioning construction method of prestressed steel corrugated pipe |
| CN206591442U (en) * | 2017-02-24 | 2017-10-27 | 中国建筑第六工程局有限公司 | A kind of corrugated pipe pipeline positioner for Precast T-Beam |
| CN112008856A (en) * | 2020-09-30 | 2020-12-01 | 中国建筑第七工程局有限公司 | Be applied to bed-jig of prefabricated case roof beam framework of steel reinforcement shaping and bellows installation |
| CN112482247A (en) * | 2020-11-21 | 2021-03-12 | 江苏永联精筑建设集团有限公司 | End template for cantilever beam hanging basket construction and cantilever beam hanging basket pouring construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114808729A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109736204B (en) | Construction process for prefabricating section beam by adopting short line method | |
| CN103726649B (en) | A kind of method of making concrete circular column template | |
| CN108179842B (en) | Assembled steel tube confined concrete column and production process thereof | |
| CN111877162A (en) | Assembling construction method for prefabricated segment box girder support of urban viaduct | |
| CN216865972U (en) | Template structure is pour to column cap | |
| CN114808729B (en) | Positioning device for pre-buried pre-stress corrugated pipe in box girder | |
| CN101059014B (en) | Steel pipe hollow concrete building floor and construction method thereof | |
| CN210507144U (en) | Stiff skeleton for positioning cable saddle of cable-branching pipe of short-tower cable-stayed bridge | |
| CN202247907U (en) | Supporting structure of urban track traffic super-large section cut-and-cover section tunnel | |
| CN106001333A (en) | Simple mold for making standard steel reinforcement cage and construction method thereof | |
| CN219255980U (en) | Fixing device for prefabricated box girder inner mold | |
| CN115680116A (en) | Assembled frame beam column connecting node and construction method thereof | |
| CN214658863U (en) | Long inclined plane fair-faced concrete formwork support system with inclination angle larger than 45 degrees | |
| CN115058976A (en) | Aluminum alloy internal mold system containing diaphragm plate and variable cross-section cast-in-place box girder and construction method thereof | |
| CN211622001U (en) | Concrete column beam node joint structure and node area steel bushing thereof | |
| CN114658170A (en) | Large-section reinforcing steel beam positioning device and construction method thereof | |
| CN203440827U (en) | Bay bolt positioning mold for steel pipe support of overhead contact system of electric railway | |
| CN208438547U (en) | A kind of precast box beam steel bar colligation mold that difference beam length is general | |
| CN113216840A (en) | Impact pore-forming ultra-long bored pile and construction method | |
| CN206591442U (en) | A kind of corrugated pipe pipeline positioner for Precast T-Beam | |
| CN205894675U (en) | Stand structure that aluminum alloy template is adjustable | |
| CN110700574A (en) | Post-cast strip supporting structure and construction method thereof | |
| CN215594464U (en) | Prefabricated wallboard and connection structure of prefabricated wallboard | |
| CN114960426A (en) | Steel inner die for concrete bridge tower anchoring area and construction method thereof | |
| CN219219815U (en) | Horizontal tie beam template reinforcing apparatus |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |