CN111395783B - Construction method for carrying out positioning fine adjustment on bolts - Google Patents
Construction method for carrying out positioning fine adjustment on bolts Download PDFInfo
- Publication number
- CN111395783B CN111395783B CN202010335865.9A CN202010335865A CN111395783B CN 111395783 B CN111395783 B CN 111395783B CN 202010335865 A CN202010335865 A CN 202010335865A CN 111395783 B CN111395783 B CN 111395783B
- Authority
- CN
- China
- Prior art keywords
- bolt
- fixing frame
- bolts
- elevation
- construction
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The embodiment of the invention discloses a construction method for carrying out positioning fine adjustment on bolts, which comprises the following steps: preparing construction, namely embedding a fixing frame construction iron piece when pouring floor slab concrete; welding a portal frame; welding a fixing frame, wherein the fixing frame comprises a vertical fixing frame and a scissor support; paying out each axis on the portal frame by using the total station, positioning a bolt mounting datum line, and pulling a steel wire; elevation control; placing a bolt, and hanging the bolt integrally; the upper part is horizontally supported and installed; after the position of the bolt is regulated, checking the central line and elevation of the regulating bolt; after the central line of the elevation of the bolt is corrected, fixing the bottom of the bolt; binding post steel bars and installing templates; all the fixing frames are completely separated from the template fixing frame; re-measuring bolts, pouring concrete, and re-checking the center and elevation of the bolts before the concrete pouring is finished; and (5) concrete curing and bolt protection. The invention can safely, conveniently and quickly correct the bolts; the problem of the displacement of the embedded bolt of the pouring concrete is solved.
Description
Technical Field
The invention relates to a construction method for carrying out positioning fine adjustment on bolts, belonging to a device installation construction method.
Background
The preheating tower of cement plant is used as a key monomer for cement production process, and is developed in the forward direction of large-scale and environmental protection. In the project of the sauter YAMAMA cement plant, the preheating tower consists of a civil engineering frame column beam plate (15 m) and an upper steel structure (150 m). The length of the two floors of the civil engineering part is 39M, the width is 24M, 12 short columns with the height of 2M are arranged on the floors, the cross section size of the 1-3-line alternating AD axis short columns is 2.5M x 2.5M, and 36M 56 bolts are arranged on each short column; 1. the section size of the 3-line intersecting BC axis short column is 2.2M x 2.2M, and each short column is provided with 12M 56 bolts; the section size of the 2-line short columns is 2 x 2M, 20M 36 bolts are arranged on each short column of the 2-line intersecting AD shaft, and 12M 27 bolts are arranged on each short column of the 2-line intersecting BC shaft. All bolts are arranged in a rectangle around the center of the post. In order to meet the requirements of steel structure installation and production processes, higher requirements are put forward on civil construction quality, and the problems of large size, large quantity and high precision requirements of the embedded bolts are met in the construction process.
Disclosure of Invention
Aiming at the technical difficulties of large size, large quantity and high precision requirement of the embedded bolts, the embodiment of the invention provides a construction method for carrying out positioning fine adjustment on the bolts.
To achieve the purpose, the embodiment of the invention provides the following technical scheme:
the construction method for carrying out positioning fine adjustment on the bolts sequentially comprises the following steps:
step one: preparing construction, namely embedding a fixing frame construction iron piece when pouring floor slab concrete;
step two: welding a portal frame;
step three: welding a fixing frame, wherein the fixing frame comprises a vertical fixing frame and a scissor support;
step four: paying out each axis on the portal frame by using the total station, positioning a bolt mounting datum line, and pulling a steel wire;
step five: elevation control, namely welding a bottom horizontal fixing frame on a vertical fixing frame to ensure levelness and elevation of the bottom horizontal fixing frame;
step six: placing a bolt, and hanging the bolt integrally;
step seven: the upper part is horizontally supported and installed, and the upper part horizontal fixing frame is welded while the bolts are integrally installed, so that the levelness and elevation of the upper part horizontal fixing frame are ensured;
step eight: after the position of the bolt is regulated, checking the central line and elevation of the regulating bolt;
step nine: after the central line of the elevation of the bolt is corrected, fixing the bottom of the bolt;
step ten: binding post steel bars and mounting templates after the bolts are mounted;
step eleven: all the fixing frames are completely separated from the template fixing frame;
step twelve: re-measuring bolts, pouring concrete, and re-checking the center and elevation of the bolts before the concrete pouring is finished;
step thirteen: and (5) concrete curing and bolt protection.
In the step nine, a bolt with a channel steel frame at the bottom is welded with a bottom horizontal fixing frame by adopting the channel steel frame; the bolts without frames at the bottoms are clamped by 2 phi 16 steel bars.
Further, in the first step, in the construction preparation stage, the drawing is familiar, technical delivery is carried out to a construction team, and a fixing frame construction iron piece is pre-buried when the floor slab concrete is poured.
Further, in the third step, the steel bars with phi 32 are used as vertical fixing frames, and the steel bars with phi 16 or more are used as scissor supports.
Further, the materials of the bottom horizontal fixing frame and the upper horizontal fixing frame are all equilateral angle steel of 63 x 5.
Compared with the prior art, the invention has the beneficial effects and remarkable progress that:
1. the bolt correction can be safely, conveniently and quickly carried out;
2. the problem of the displacement of the embedded bolt of the pouring concrete is solved.
The two points are not only quick and convenient, but also economical, reliable, applicable and safe.
Drawings
In order to more clearly illustrate the technical solution of the present invention, a brief description will be given below of the drawings that are required to be used for the embodiments of the present invention.
It is obvious that the drawings in the following description are only drawings of some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art, but these other drawings also fall within the drawings required for the embodiments of the present invention.
FIG. 1 is a schematic plan view of a fixing frame according to an embodiment of the present invention;
fig. 2 is a vertical schematic view of a fixing frame of a bolt with a channel steel frame at the bottom of the fixing frame according to the embodiment of the invention;
FIG. 3 is a vertical schematic view of a fixing frame of a bolt without a frame at the bottom of the embodiment of the invention;
fig. 4 is a gantry layout of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions, beneficial effects and significant improvements of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the embodiments of the present invention.
It is apparent that all of the described embodiments are only some, but not all, embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and "third" (if any) in the description and claims of the present invention and the drawings of the embodiments of the present invention are used merely for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise," "include," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It is to be understood that:
in the description of embodiments of the present invention, the terms "upper," "lower," "top," "bottom," and the like are used merely as orientation or positional relationships illustrated in the drawings based on embodiments of the present invention, and are merely for convenience in describing embodiments of the present invention and to simplify the description, rather than to indicate or imply that the apparatus or elements described must have a particular orientation, a particular orientation configuration, and operation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected or movably connected, or integrally formed; either directly, indirectly, through intermediaries, or through an intangible signal connection, or even optically, in communication with one another, or in interaction with one another, unless expressly defined otherwise.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should also be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
The following describes the technical scheme of the present invention in detail by using specific examples.
As shown in the figure, the embodiment of the invention discloses a construction method for carrying out positioning fine adjustment on bolts, which comprises the following steps of:
step one: preparing construction, namely embedding a fixing frame construction iron piece when pouring floor slab concrete;
step two: welding the portal frame, so as to ensure the stability of the portal frame;
step three: the fixing frame is welded, the fixing frame 1 comprises a vertical fixing frame 11 and a scissor support 12, and the integrity and the firmness are ensured; the scissors support is an oblique support.
Step four: paying out each axis on the portal frame by using the total station, positioning a bolt mounting datum line, and pulling a steel wire;
step five: the elevation control, welding a bottom horizontal fixing frame 2 on a vertical fixing frame, and ensuring the levelness and elevation of the bottom horizontal fixing frame;
step six: placing a bolt 3, and hanging the whole bolt in;
step seven: the upper part is horizontally supported and installed, and the upper part horizontal fixing frame 4 is welded while the bolt 3 is integrally installed, so that the levelness and elevation of the upper part horizontal fixing frame are ensured;
step eight: after the position of the bolt is regulated, checking the central line and elevation of the regulating bolt;
step nine: after the central line of the elevation of the bolt is corrected, fixing the bottom of the bolt;
step ten: binding post steel bars and mounting templates after the bolts are mounted;
step eleven: all the fixing frames are completely separated from the template fixing frame;
step twelve: re-measuring bolts, pouring concrete, and re-checking the center and elevation of the bolts before the concrete pouring is finished;
step thirteen: and (5) concrete curing and bolt protection.
In the ninth step, the bolts with the channel steel frames 5 at the bottoms are welded with the bottom horizontal fixing frame by adopting the channel steel frames; the bolts without frames at the bottoms are clamped by 2 phi 16 steel bars.
The bottom of the vertical fixing frame is fixed on the embedded steel plate 6. Plays a role in rapid welding. The embedded steel plate 6 is embedded in the floor slab.
The dimensions of the embedded steel plate 6 are 150mm multiplied by 6mm.
In the first step of the method, in the preparation stage of construction, the drawing is familiar, technical bottoms are given to construction teams, and the fixing frame construction iron piece is pre-buried when the floor slab concrete is poured.
In the third step, the steel bars with phi 32 are used as vertical fixing frames, and the steel bars with phi 16 or more are used as scissors supports.
In an embodiment of the present invention, the bottom horizontal fixing frame and the upper horizontal fixing frame are both made of 63×5 equilateral angle steel.
The invention solves the problems of high precision requirement and large diameter of a plurality of bolts with a plurality of embedded bolts, and has the direct effects that:
1. the bolt correction can be safely, conveniently and quickly performed;
2. and (5) the displacement of the embedded bolts of the poured concrete is difficult.
The two points are not only quick and convenient, but also economical, reliable, applicable and safe.
The embodiment of the invention is successfully applied to the projects of the Saint YAMAMA cement plant, the pouring construction of 2 pre-heating tower short columns is finished with high quality, the bolt total station retest center line deviation after the demolding is within 1mm, and the steel structure base is hoisted once to be in place, so that the high praise of owners is obtained.
In the description of the above specification:
the terms "this embodiment," "an embodiment of the invention," "as shown in … …," "further improved embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in the embodiment or example is included in at least one embodiment or example of the invention; in this specification, a schematic representation of the above terms is not necessarily directed to the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc. may be combined or combined in any suitable manner in any one or more embodiments or examples; furthermore, various embodiments or examples, as well as features of various embodiments or examples, described in this specification may be combined or combined by one of ordinary skill in the art without undue experimentation.
Finally, it should be noted that:
the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof;
although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some or all of the technical features thereof, without departing from the spirit of the technical solutions of the embodiments of the present invention, and that insubstantial improvements and modifications or substitutions by one skilled in the art from the disclosure herein are within the scope of the invention as claimed.
Claims (5)
1. The construction method for carrying out positioning fine adjustment on the bolts is characterized by comprising the following steps of:
step one: preparing construction, namely embedding a fixing frame construction iron piece when pouring floor slab concrete;
step two: welding a portal frame;
step three: welding a fixing frame, wherein the fixing frame comprises a vertical fixing frame and a scissor support;
step four: paying out each axis on the portal frame by using the total station, positioning a bolt mounting datum line, and pulling a steel wire;
step five: elevation control, namely welding a bottom horizontal fixing frame on a vertical fixing frame to ensure levelness and elevation of the bottom horizontal fixing frame;
step six: placing a bolt, and hanging the bolt integrally;
step seven: the upper part is horizontally supported and installed, and the upper part horizontal fixing frame is welded while the bolts are integrally installed, so that the levelness and elevation of the upper part horizontal fixing frame are ensured;
step eight: after the position of the bolt is regulated, checking the central line and elevation of the regulating bolt;
step nine: after the central line of the elevation of the bolt is corrected, fixing the bottom of the bolt;
step ten: binding post steel bars and mounting templates after the bolts are mounted;
step eleven: all the fixing frames are completely separated from the template fixing frame;
step twelve: re-measuring bolts, pouring concrete, and re-checking the center and elevation of the bolts before the concrete pouring is finished;
step thirteen: and (5) concrete curing and bolt protection.
2. The construction method for performing positioning fine adjustment on a bolt according to claim 1, wherein:
in the step nine, a bolt with a channel steel frame at the bottom is welded with a bottom horizontal fixing frame by adopting the channel steel frame; the bolts without frames at the bottoms are clamped by 2 phi 16 steel bars.
3. The construction method for performing positioning fine adjustment on a bolt according to claim 1, wherein: in the first step, in the construction preparation stage, the drawing is familiar, technical bottom crossing is carried out to a construction team, and a fixing frame construction iron piece is pre-buried when floor slab concrete is poured.
4. The construction method for performing positioning fine adjustment on a bolt according to claim 1, wherein: in the third step, the steel bars with phi 32 are used as vertical fixing frames, and the steel bars with phi more than 16 are used as scissor struts.
5. The construction method for performing positioning fine adjustment on a bolt according to claim 1, wherein: the materials of the bottom horizontal fixing frame and the upper horizontal fixing frame are 63×5 equilateral angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335865.9A CN111395783B (en) | 2020-04-25 | 2020-04-25 | Construction method for carrying out positioning fine adjustment on bolts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335865.9A CN111395783B (en) | 2020-04-25 | 2020-04-25 | Construction method for carrying out positioning fine adjustment on bolts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111395783A CN111395783A (en) | 2020-07-10 |
| CN111395783B true CN111395783B (en) | 2024-01-30 |
Family
ID=71435402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010335865.9A Active CN111395783B (en) | 2020-04-25 | 2020-04-25 | Construction method for carrying out positioning fine adjustment on bolts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111395783B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374282B (en) * | 2021-06-30 | 2023-03-24 | 中国二十二冶集团有限公司 | Method for controlling embedded bolt by adopting assumed coordinate system |
| CN113981911A (en) * | 2021-11-11 | 2022-01-28 | 中国水利水电第三工程局有限公司 | Embedded installation construction method for countersunk bolts of water stop cover plate on surface of face dam |
| CN114293664A (en) * | 2022-01-21 | 2022-04-08 | 中国建筑第八工程局有限公司 | Quick installation process for ultrahigh-precision embedded part group |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538858A (en) * | 2009-04-15 | 2009-09-23 | 中国十七冶建设有限公司 | Method and device for jointing reinforcement and vibration readjustment construction of pre-embedded bolt |
| CN103590416A (en) * | 2013-11-01 | 2014-02-19 | 浙江水利水电学院 | Pre-buried construction method for high-precision foundation bolts |
| CN106351246A (en) * | 2015-07-15 | 2017-01-25 | 五冶集团上海有限公司 | Installing method of the integral sleeve of a kind of T -bolt (diameter <= 48mm) |
| CN106759943A (en) * | 2017-03-21 | 2017-05-31 | 中国五冶集团有限公司 | A kind of pre-assembled Anchor Bolts in Steel Column Bases structure |
| CN106930406A (en) * | 2017-03-21 | 2017-07-07 | 中国五冶集团有限公司 | A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure |
| CN207062973U (en) * | 2017-07-19 | 2018-03-02 | 中国核工业第二二建设有限公司 | A kind of frock for aiding in accurately foot bolt Embedment Construction |
| CN108360550A (en) * | 2018-02-28 | 2018-08-03 | 五冶集团上海有限公司 | A kind of steel construction direct-burried foundation bolt construction method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5594987B2 (en) * | 2009-06-24 | 2014-09-24 | 三菱重工業株式会社 | Method for manufacturing concrete mount, concrete mount, and connecting material |
| CN107299641A (en) * | 2017-06-02 | 2017-10-27 | 中国建筑股份有限公司 | A kind of assembled heel join node and its construction method |
-
2020
- 2020-04-25 CN CN202010335865.9A patent/CN111395783B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538858A (en) * | 2009-04-15 | 2009-09-23 | 中国十七冶建设有限公司 | Method and device for jointing reinforcement and vibration readjustment construction of pre-embedded bolt |
| CN103590416A (en) * | 2013-11-01 | 2014-02-19 | 浙江水利水电学院 | Pre-buried construction method for high-precision foundation bolts |
| CN106351246A (en) * | 2015-07-15 | 2017-01-25 | 五冶集团上海有限公司 | Installing method of the integral sleeve of a kind of T -bolt (diameter <= 48mm) |
| CN106759943A (en) * | 2017-03-21 | 2017-05-31 | 中国五冶集团有限公司 | A kind of pre-assembled Anchor Bolts in Steel Column Bases structure |
| CN106930406A (en) * | 2017-03-21 | 2017-07-07 | 中国五冶集团有限公司 | A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure |
| CN207062973U (en) * | 2017-07-19 | 2018-03-02 | 中国核工业第二二建设有限公司 | A kind of frock for aiding in accurately foot bolt Embedment Construction |
| CN108360550A (en) * | 2018-02-28 | 2018-08-03 | 五冶集团上海有限公司 | A kind of steel construction direct-burried foundation bolt construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111395783A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111395783B (en) | Construction method for carrying out positioning fine adjustment on bolts | |
| CN104088461B (en) | Y type cast-in-situ concrete columns template system and construction method thereof | |
| CN105908902B (en) | Precast Pier Columns steel reinforcement cage locating rack and pier stud steel reinforcement cage construction method | |
| CN102561712A (en) | Accurate positioning frame for large steel column and equipment foundation fixing bolt and construction method thereof | |
| CN204920239U (en) | A child die carrier for making square framework of steel reinforcement | |
| CN110847048B (en) | Positioning construction method for corrugated steel web | |
| CN117145215B (en) | Large-scale bloom-shaped special-shaped steel column sectional assembly construction method for high-speed rail station | |
| CN210880205U (en) | Movable common steel bar positioning device for prefabricated T-shaped beam and small box girder | |
| CN210947781U (en) | Slip form construction horizontal reinforcement auxiliary positioning instrument | |
| CN112709144A (en) | Assembled special-shaped pier column and construction method | |
| CN108716221A (en) | A kind of detachable pre-embedded bolt group supporting and mounting bracket and application method | |
| CN209958161U (en) | Linear adjusting equipment of track beam | |
| CN110080271B (en) | Construction method for embedded quality control of foundation bolt embedded part | |
| CN112458905A (en) | Splicing adjustment method for prefabricated capping beam and prefabricated stand column | |
| CN205617664U (en) | Prefabricated pier stud locating rack for steel reinforcement cage | |
| KR20040039164A (en) | Pier coping pre-assembly method | |
| KR100597872B1 (en) | Construction method for bridge using a jig apparatus | |
| CN114658170A (en) | Large-section reinforcing steel beam positioning device and construction method thereof | |
| KR20090128115A (en) | Jig system for a bridge pier | |
| CN210529741U (en) | Independent foundation embedded bolt mounting structure | |
| CN208450478U (en) | A kind of double layer bar plate machining device | |
| AU705217B2 (en) | Method and apparatus for forming cages | |
| CN112681148A (en) | Floor-free pier column capping beam template dismounting device and construction method | |
| CN218562762U (en) | Slow bonding prestressed rib split heads that can carry out altitude mixture control | |
| CN109252536A (en) | A kind of thin reinforcing pull rod group Precise Position System of length and its localization method |
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 |