CN109747030B - Modification auxiliary device and modification method for tunnel secondary lining template - Google Patents
Modification auxiliary device and modification method for tunnel secondary lining template Download PDFInfo
- Publication number
- CN109747030B CN109747030B CN201910198683.9A CN201910198683A CN109747030B CN 109747030 B CN109747030 B CN 109747030B CN 201910198683 A CN201910198683 A CN 201910198683A CN 109747030 B CN109747030 B CN 109747030B
- Authority
- CN
- China
- Prior art keywords
- template
- plate
- tunnel
- modified
- side plates
- 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
Landscapes
- Road Paving Structures (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a modification auxiliary device and a modification method of a tunnel secondary lining template, wherein the auxiliary device comprises a bottom plate and two side plates symmetrically arranged on the bottom plate, the upper end surfaces of the two side plates are arc-shaped, the radian of the upper end surfaces of the two side plates is consistent with that of a rib plate of the tunnel secondary lining template to be manufactured, and the distance between the two side plates is smaller than or equal to the width of a web plate in the secondary lining template; the outer end faces of the two side plates and the lower ends of the side plates are respectively provided with a plurality of hooks for hanging the manual hoist iron chain. When the double-lining template is modified, the auxiliary device used for modification is customized, the existing double-lining template of the tunnel is selected, and the rib plate of the selected double-lining template of the tunnel is hoisted, cut, positioned, deformed by pulling and sealed in a cutting seam, so that the double-lining template of the tunnel meeting the requirements is obtained. The modification auxiliary device and the modification method of the tunnel two-lining template can modify the original standard template of the two linings into the standard template of the two linings meeting the requirements of the existing tunnel, and have the advantages of simple modification method and low modification cost.
Description
Technical Field
The invention relates to manufacturing of a tunnel two-lining template, in particular to a modification auxiliary device and a modification method of the tunnel two-lining template.
Background
The tunnel being embedded inFormation of earthInside ofEngineering buildingIs utilized by human beingsUnderground spaceIn one form thereof. The tunnel is mainly formed by tunnel excavation, tunnel preliminary bracing, tunnel waterproof layer construction, tunnel secondary lining construction and tunnel pavement construction. The standard template mainly comprises two template ribbed plates which are consistent with the arch camber of the tunnel secondary lining and are arranged opposite to the arch camber of the tunnel secondary lining, and a template web plate arranged between the template ribbed plates. Carry out the template in mill and add man-hour, although the machining dimension is accurate, nevertheless there is the processing cycle length, the problem that the processing cost is high, simultaneously, mainly form the template after buckling the section bar when mill is prefabricated, can not reform transform the use to the old template of abandonment, and then lead to extravagant material, be not conform to national environmental protection, saveThe subject matter of (1).
Based on the above problems, the applicant considers that a new standardized template is formed by reasonably processing and modifying the original standardized template, so as to shorten the processing period of the two-lining template, reduce the cost of the template and save materials, but no auxiliary tool and modifying method for modifying the tunnel two-lining template exist at present.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a standard template of two liners of the tunnel to change into the standard template of two liners meeting the existing tunnel requirement, and the refitting method is simple, the refitting auxiliary device and refitting method of the template of two liners of the tunnel with low refitting cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
an auxiliary tool for manufacturing a tunnel secondary lining template is characterized by comprising a bottom plate and two side plates symmetrically arranged on the bottom plate, wherein the upper end surfaces of the two side plates are arc-shaped, the radian of the upper end surfaces is consistent with that of a rib plate of the tunnel secondary lining template to be manufactured, and the distance between the two side plates is smaller than or equal to the width of a web plate in the secondary lining template; the outer end faces of the two side plates and the lower ends of the side plates are respectively provided with a plurality of hooks for hanging the manual hoist iron chain. Like this, during the use, the standardized template of two linings before the repacking after will cutting the floor is placed on the curb plate, at this moment, the curb plate can play the supporting role to this template, and simultaneously, radian on the curb plate is unanimous with the radian of the two lining templates after the required repacking, place two lining templates after the repacking on the curb plate, through setting up a plurality of hand hoists, hang the one end that has the couple of hand hoist and establish on two lining templates before the repacking, the iron chain of the other end is hung and is established on the couple on the curb plate, start hand hoist, make the floor in the two lining templates before the repacking hug closely with the curb plate up end, then reuse steel sheet carries out welded fastening with the floor department of cutting and can accomplish two lining templates after the repacking. The auxiliary tool is simple in structure, and meanwhile, a standard rib plate radian can be provided for the refitting of the two lining templates, so that the size and the radian of the rib plate of the refitted two lining templates are accurate. Meanwhile, the auxiliary tool is simple in structure, low in manufacturing cost and convenient to popularize, the two lining templates refitted by the auxiliary tool are high in precision, waste of materials is reduced, and manufacturing cost of the two lining templates is saved.
Furthermore, a plurality of I-shaped steel bars are fixedly arranged between the two side plates. Therefore, the two side plates are further fixed through the I-shaped steel, and the strength of the whole device can be effectively improved.
Furthermore, the number of the I-beams is six, and the six I-beams are respectively close to the upper end and the lower end of the left side, the middle part and the right side of the side plate. Like this, establish a plurality ofly with the I-steel respectively at the upper and lower both ends of curb plate, can effectively increase the intensity at both ends about the curb plate, and the biggest part of the external force that the curb plate receives is the upper and lower both ends department of curb plate promptly, and then can effectively increase the life of curb plate.
Furthermore, a positioning plate which is used for preventing the rib plate in the two lining templates from shifting and is vertically arranged is respectively fixed on the same side of the two side plates and the two side plates. Therefore, when the two lining templates before refitting are pulled by the hand hoist, the positioning plate generates a blocking force on the two lining templates, so that the two lining templates are prevented from shifting in the pulling process.
Furthermore, the hook is an inverted L-shaped steel plate, and the side end of the inverted L-shaped steel plate is fixed on the side plate in a welding mode. Like this, outside one side of couple stretched out the curb plate, like this, can be convenient for hang of iron chain and establish, simultaneously, its bending part can also play certain positioning action to the iron chain, prevents that it from droing.
Further, the distance between adjacent hooks is 1.5m to 1.8 m. Like this, the interval is arranged comparatively evenly, can adapt to the many cutting condition of floor in two lining templates.
Furthermore, the bottom plate is rectangular, the long side and the short side of the bottom plate extend out of the side plates, and positioning holes for fixing the bottom plate are respectively arranged on the periphery of the bottom plate. Like this, the area of bottom plate is great, can play fine support and fixed action, and the locating hole that sets up can be used for wearing to establish of screw, further fixes the bottom plate, prevents to produce because of personnel walk about and the pulling of manual calabash and shift.
A method for refitting a tunnel secondary lining template comprises the following steps: s1, drawing a design drawing of the modification auxiliary device according to the radian of the rib plates of the secondary tunnel lining template after the modification; s2, prefabricating a refitting auxiliary device of the tunnel secondary lining template meeting the requirements in the factory according to the design drawing in the S1; s3, selecting an old tunnel secondary lining template with the radian similar to that of a rib plate of the tunnel secondary lining template to be modified as a modified template; s4, hoisting the modified template selected in the S3 to the prefabricated modified auxiliary device in the S2 by using a crane, and positioning the hoisted modified template; s5, cutting 5-10 mm wide cutting seams on the rib plates of the positioned modified template along the width direction of the rib plates, wherein the distance between every two adjacent cutting seams is controlled to be 1.3-1.7 m; s6, uniformly hanging a plurality of hand hoists on the rib plate provided with the cutting seam, hanging the iron chain of each hand hoist on the adjacent hook, and then pulling the iron chain on the hand hoist downwards to enable the rib plate to generate bending deformation until the cambered surface of the rib plate is tightly attached to the cambered surface on the side plate of the modification auxiliary device; and S7, attaching a steel plate with the same thickness to the inner side of the rib plate of the modified template and the cutting seam, firmly welding the periphery of the steel plate and the rib plate, and then loosening the hand-operated block to obtain the modified tunnel secondary lining template. Therefore, the auxiliary device used in the customization and modification is adopted, the existing tunnel secondary lining template is selected, and the tunnel secondary lining template meeting the requirements is obtained after the rib plate of the selected tunnel secondary lining template is hoisted, cut, positioned, deformed by pulling and sealed in a cutting seam.
Further, when the modified template is selected, the radian difference between the radian of the rib plate of the selected template and the radian of the rib plate in the secondary lining template of the tunnel to be modified is controlled within 20%. Like this, the degree of difficulty of repacking is littleer, and the cutting seam quantity that will cut is also little, and the quantity of the hand-drive block that needs to set up also can reduce, and then reducible operating procedure improves repacking efficiency, and it is extravagant to reduce steel.
Furthermore, in S4, during hoisting, the left side end or the right side end of the modified template is placed close to the positioning plate, the front side and the rear side of the modified template respectively extend out of the side plates by 40-60mm, and the modified template is positioned by welding with the positioning plate. Therefore, the modified template can be positioned very conveniently through the positioning plate, and the modified template is prevented from shifting in the process of pulling the hand hoist.
Compared with the prior art, the modification auxiliary device and the modification method of the tunnel secondary lining template have the following advantages:
1. the side plates in the auxiliary device can support two lining templates before and after modification, so that an operator can modify the side plates and lift the side plates after modification. Meanwhile, the radian of the upper end surface of the side plate is consistent with the radian of the two lining templates after the two lining templates are required to be modified, so that enough guarantee can be provided for the modification precision of the two lining templates, and the size and the radian of the rib plate of the two lining templates after the two lining templates are modified are accurate.
2. The auxiliary tool has the advantages of simple structure, low manufacturing cost and convenient popularization, and the two-lining template modified by the device not only has high precision, but also reduces the waste of materials and saves the manufacturing cost of the two-lining template.
3. When the old tunnel secondary lining template with the similar radian is selected for modification, the modification steps are simple, and meanwhile, the operation is convenient, and the later popularization and application are facilitated.
Drawings
FIG. 1 is a schematic view showing an embodiment of a working state of a secondary template modified by an auxiliary tool;
FIG. 2 is a side view of the auxiliary tool in the embodiment.
In the figure: the steel plate comprises a bottom plate 1, side plates 2, hooks 3, I-shaped steel 4, a positioning plate 5, a secondary lining template 6 and a manual hoist 7.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example (b):
the refitting auxiliary device for the tunnel secondary lining template and the refitting method thereof provided by the embodiment comprise a rectangular bottom plate 1 and two side plates 2 symmetrically arranged on the bottom plate 1, wherein the upper end surfaces of the two side plates 2 are arc-shaped, the radian of the upper end surfaces is consistent with that of a rib plate of the tunnel secondary lining template to be manufactured, and the distance between the two side plates 2 is less than or equal to the width of a web plate in the secondary lining template; a plurality of hooks 3 for hanging and arranging the manual hoist iron chain are arranged on the outer end faces of the two side plates 2 and the lower ends of the side plates 2, the hooks 3 are inverted L-shaped steel plates, the side ends of the hooks are fixed on the side plates 2 in a welding mode, and the distance between every two adjacent hooks 3 is 1.5-1.8 m; and the same sides of the two side plates 2 and the two side plates 2 are respectively fixed with a positioning plate 5 which is used for preventing the rib plate in the two lining templates from shifting and is vertically arranged, and the two positioning plates 5 are symmetrically arranged.
The specific method for modifying the tunnel secondary lining template comprises the following steps: the method comprises the following steps: s1, drawing a design drawing of the modification auxiliary device according to the radian of the rib plates of the secondary tunnel lining template after the modification; s2, prefabricating a refitting auxiliary device of the tunnel secondary lining template meeting the requirements in the factory according to the design drawing in the S1; s3, selecting an old tunnel secondary lining template with the radian similar to that of a ribbed plate of a tunnel secondary lining template to be modified as a modified template, wherein when the modified template is selected, the radian difference between the ribbed plate of the selected template and the radian difference of the ribbed plate in the modified tunnel secondary lining template is controlled within 20%; s4, hoisting the modified template selected in the S3 to the prefabricated modified auxiliary device in the S2 by using a crane, and positioning the hoisted modified template; during hoisting, the left side end or the right side end of the modified template is placed close to the positioning plate 5, the front side and the rear side of the modified template respectively extend out of the side plate 2 by 40-60mm, the side end of the rib plate of the modified template is welded with the positioning plate 5, and the rib plate of the modified template is fixed on the side plate by using a buckle, so that the modified template is positioned; s5, cutting 5-10 mm wide cutting seams on the rib plates of the positioned modified template along the width direction of the rib plates, wherein the distance between every two adjacent cutting seams is controlled to be 1.3-1.7 m; s6, uniformly hanging a plurality of hand-operated hoists on the ribbed slab provided with the cutting seam, hanging the iron chain of each hand-operated hoist on the adjacent hook 3, and then pulling the iron chain on the hand-operated hoist 7 downwards to enable the ribbed slab to generate bending deformation until the cambered surface of the ribbed slab is tightly attached to the cambered surface on the side plate of the modification auxiliary device; and S7, attaching a steel plate with the same thickness to the inner side of the rib plate of the modified template and the cutting seam, firmly welding the periphery of the steel plate and the rib plate, and then loosening the hand-operated block to obtain the modified tunnel secondary lining template.
The old template is processed into two conditions, wherein the original radian is larger than the specified radian, and the original radian of the old template is smaller than the specified radian. When the radian of the original old template is larger than the specified radian, the middle manual hoist is mainly stressed, and when the radian of the original old template is smaller than the specified radian. The main stress is the hand-operated hoist on both sides.
In addition, when cutting the cutting seam, the length of cutting seam should be unanimous with the width of rib plate in the repacking template, and simultaneously, the cutting direction of each cutting seam is all different, specifically speaking, each cutting seam should overlap with the radius line of rib plate, just so be more convenient for the pulling of hand hoist 7, save the pulling force that pulling hand hoist 7 will adopt. Meanwhile, the cutting seam can be ensured to be smaller and more standard after being pulled, and can be connected and fixed by a steel plate more easily.
The bottom plate 1 and the side plates 2 in the embodiment are both steel plates with the thickness of 20mm, and meanwhile, a plurality of I-shaped steel 4 are fixedly arranged between the two side plates 2 for further ensuring the strength and the stability of the auxiliary device. Six I-steel 4 are arranged, and the six I-steel 4 are respectively close to the upper end and the lower end of the left side, the middle part and the right side of the side plate 2.
In addition, in the process of pulling the ribbed plates of the two lining templates by starting the hand hoist, in order to prevent the ribbed plates in the two lining templates from shifting, the positioning plate 5 and the side plate 2 are fixed by welding. The long side and the short side of the bottom plate 1 extend out of the side plates, and positioning holes for fixing the bottom plate are respectively arranged on the periphery of the bottom plate 1.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.
Claims (8)
1. The refitting auxiliary device for the tunnel secondary lining template is characterized by comprising a bottom plate (1) and two side plates (2) symmetrically arranged on the bottom plate (1), wherein the upper end surfaces of the two side plates (2) are arc-shaped, the radian of the upper end surfaces is consistent with that of rib plates of the tunnel secondary lining template to be manufactured, and the distance between the two side plates (2) is smaller than or equal to the width of a web plate in the secondary lining template; a plurality of hooks (3) for hanging and arranging iron chains of the manual hoist are arranged on the outer end surfaces of the two side plates (2) and the lower ends of the side plates (2); the hook (3) is an inverted L-shaped steel plate, and the side end of the hook is fixed on the side plate (2) in a welding manner; and a positioning plate (5) which is used for preventing the rib plate in the two lining templates from shifting and is vertically arranged is respectively fixed on the same side of the two side plates (2) and the two side plates (2).
2. The refitting auxiliary device of a tunnel secondary lining template according to claim 1, characterized in that a plurality of I-shaped steel (4) are fixedly arranged between the two side plates (2).
3. The refitting auxiliary device for a secondary tunnel lining formwork according to claim 2, wherein six i-beams (4) are provided, and the six i-beams (4) are respectively close to the upper and lower ends of the left side, the middle part and the right side of the side plate.
4. The tunnel secondary lining formwork refitting assistance device according to claim 1 or 2 or 3, characterized in that the spacing between adjacent hooks (3) is 1.5m to 1.8 m.
5. The refitting auxiliary device of a tunnel secondary lining template as claimed in claim 1, 2 or 3, wherein the bottom plate (1) is rectangular, the long side and the short side of the bottom plate (1) extend out of the side plates, and positioning holes for fixing the bottom plate are respectively arranged on the periphery of the bottom plate (1).
6. A method for refitting a tunnel secondary lining template is characterized by comprising the following steps: s1, drawing a design drawing of the modification auxiliary device according to the radian of the rib plates of the secondary tunnel lining template after the required modification; s2, prefabricating a refitting auxiliary device of the tunnel secondary lining template meeting the requirements in the factory according to the design drawing in the S1; s3, selecting an old tunnel secondary lining template with the radian similar to that of a rib plate of the tunnel secondary lining template to be modified as a modified template; s4, hoisting the modified template selected in the S3 to the prefabricated modified auxiliary device in the S2 by using a crane, and positioning the hoisted modified template; s5, cutting 5-10 mm wide cutting seams on the rib plates of the positioned modified template along the width direction of the rib plates, wherein the distance between every two adjacent cutting seams is controlled to be 1.3-1.7 m; s6, uniformly hanging a plurality of hand-operated hoists on the rib plate provided with the cutting seam, hanging the iron chain of each hand-operated hoist on the hook (3) adjacent to the hand-operated hoist, and then pulling the iron chain on the hand-operated hoist (7) downwards to enable the rib plate to generate bending deformation until the cambered surface of the rib plate is tightly attached to the cambered surface on the side plate of the modification auxiliary device; and S7, attaching a steel plate with the same thickness to the inner side of the rib plate of the modified template and the cutting seam, firmly welding the periphery of the steel plate and the rib plate, and then loosening the hand-operated block to obtain the modified tunnel secondary lining template.
7. The method of claim 6, wherein the radian difference between the radians of the ribs of the selected template and the radians of the ribs of the secondary tunnel lining template to be modified is controlled within 20% when selecting the modified template.
8. The method for modifying a tunnel secondary lining formwork according to claim 6 or 7, wherein in the step S4, the left side end or the right side end of the modified formwork is placed close to the positioning plate (5) during hoisting, the front side and the rear side of the modified formwork respectively extend out of the side plates (2) by 40-60mm, and the modified formwork is positioned by welding with the positioning plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198683.9A CN109747030B (en) | 2019-03-15 | 2019-03-15 | Modification auxiliary device and modification method for tunnel secondary lining template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198683.9A CN109747030B (en) | 2019-03-15 | 2019-03-15 | Modification auxiliary device and modification method for tunnel secondary lining template |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109747030A CN109747030A (en) | 2019-05-14 |
| CN109747030B true CN109747030B (en) | 2021-03-16 |
Family
ID=66408773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910198683.9A Active CN109747030B (en) | 2019-03-15 | 2019-03-15 | Modification auxiliary device and modification method for tunnel secondary lining template |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109747030B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139007B (en) * | 2022-07-25 | 2023-04-28 | 厦门市特种设备检验检测院 | Stable installation device and method for tunnel water supply pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204504530U (en) * | 2015-03-12 | 2015-07-29 | 衡阳市瑞通机械制造有限公司 | The circle curve template that a kind of radian is adjustable |
| CN205477665U (en) * | 2016-03-28 | 2016-08-17 | 将乐县国通隧道机械有限公司 | Removable tunnel lining platform truck of side form board |
| CN206376878U (en) * | 2016-12-24 | 2017-08-04 | 中铁十八局集团有限公司 | Railway tunnel self-propelled hydraulic inverted arch arc formwork adjusting means |
| CN209736915U (en) * | 2019-03-15 | 2019-12-06 | 中冶建工集团有限公司 | Auxiliary tool for manufacturing tunnel secondary lining template |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT266549B (en) * | 1965-12-02 | 1968-11-25 | Kloeckner Werke Ag | Welding device for welding weld seams on spherically curved metal sheets, in particular on metal sheets for the construction of spherical gas containers |
| CN105108418B (en) * | 2015-09-18 | 2017-11-21 | 武汉一冶钢结构有限责任公司 | The assistant formation mould and method of a kind of wind-tunnel flow deflector |
| CN207119928U (en) * | 2017-08-23 | 2018-03-20 | 浙江裕洋隧道管片制造有限公司 | A kind of welding stand for section of jurisdiction steel reinforcement cage |
| CN107587885B (en) * | 2017-10-17 | 2023-12-15 | 中铁十局集团第二工程有限公司 | Two-lining trolley structure in standard section of tunnel and assembling method |
-
2019
- 2019-03-15 CN CN201910198683.9A patent/CN109747030B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204504530U (en) * | 2015-03-12 | 2015-07-29 | 衡阳市瑞通机械制造有限公司 | The circle curve template that a kind of radian is adjustable |
| CN205477665U (en) * | 2016-03-28 | 2016-08-17 | 将乐县国通隧道机械有限公司 | Removable tunnel lining platform truck of side form board |
| CN206376878U (en) * | 2016-12-24 | 2017-08-04 | 中铁十八局集团有限公司 | Railway tunnel self-propelled hydraulic inverted arch arc formwork adjusting means |
| CN209736915U (en) * | 2019-03-15 | 2019-12-06 | 中冶建工集团有限公司 | Auxiliary tool for manufacturing tunnel secondary lining template |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109747030A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111395351B (en) | Assembled supporting structure of foundation pit and supporting construction method | |
| CN101196116A (en) | Three-connected-arch tunnel double-side cavity construction method for soft geological | |
| CN101481935B (en) | Prestressed reinforcement concrete double T plate, tire shuttering thereof and production method | |
| CN105887685A (en) | Railway high pier body template and scaffold integrated turnover formwork segmental construction method | |
| CN108118890A (en) | Walling body template system and its erection method to be poured in shear force wall deformation slit | |
| CN104929364B (en) | Auxiliary construction method for longspan cantilever entire laminated Vierendeel truss structure | |
| CN109747030B (en) | Modification auxiliary device and modification method for tunnel secondary lining template | |
| CN206748695U (en) | The prefabricated edges of boards mould of zigzag | |
| CN209736915U (en) | Auxiliary tool for manufacturing tunnel secondary lining template | |
| CN106284981B (en) | The mold method of two side templates in a kind of shear force wall deformation slit | |
| CN108222006B (en) | Construction method of square underground continuous wall | |
| CN211113683U (en) | High slope dismounting-free light steel mould net self-compacting concrete frame slope protection structure | |
| CN209907541U (en) | Integral pouring template system for trapezoid drainage ditch | |
| CN206337643U (en) | Pre-fabricated one | |
| ITMO20080240A1 (en) | METHOD FOR THE CONSTRUCTION AND INSTALLATION OF A BUILDING ARMOR FOR CONSTRUCTIONS, PARTICULARLY FOR THE CONSTRUCTION OF STREET OR SIMILAR TUNNELS, AND ARMOR SUCH AS OBTAINABLE | |
| CN213806505U (en) | Shaping operation platform in elevator shaft | |
| CN109056815A (en) | Pipe gallery construction method | |
| CN205382595U (en) | Integral shear force wall of steel pipe concrete edge constraint coincide | |
| CN210313123U (en) | A hoist device for bent cap steel reinforcement cage | |
| CN207436338U (en) | A kind of new precast panel | |
| CN208009260U (en) | A kind of special hoisting sling of prefabricated bridge | |
| CN215518837U (en) | Reinforced concrete prefabricated forming die | |
| CN217811154U (en) | Independent foundation capable of being used repeatedly | |
| CN214143792U (en) | Foundation ring structure | |
| JP4325340B2 (en) | How to build a reinforcing bar |
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 |