CN112127641A - Accurate fixing method for anchor plate foundation bolt - Google Patents
Accurate fixing method for anchor plate foundation bolt Download PDFInfo
- Publication number
- CN112127641A CN112127641A CN202010889253.4A CN202010889253A CN112127641A CN 112127641 A CN112127641 A CN 112127641A CN 202010889253 A CN202010889253 A CN 202010889253A CN 112127641 A CN112127641 A CN 112127641A
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- anchor plate
- foundation bolt
- steel plate
- anchor
- elevation
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- 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
Abstract
The invention relates to a method for accurately fixing anchor plate foundation bolts, wherein an anchor plate foundation bolt support frame comprises an adjustable screw, a hand-screwed nut, a welding steel plate and an anchor plate, and is embedded for construction, before a cushion layer is poured, a line is bounced on the center line of a foundation bolt group, the anchor plate foundation bolt support frame is placed at the line-bouncing position through the line-bouncing position, a heavy object is placed on the support frame to ensure that no displacement occurs, whether the anchor plate foundation bolt support frame is displaced or not is observed in the cushion layer building process, if the displacement occurs, the adjustment is carried out before the cushion layer is initially set, and after the cushion layer is set, the heavy object is moved away; drawing through the positioning copper wire: according to the center line position and the bottom elevation of the foundation bolt group, pulling through the N copper wires according to the requirement, and carrying out displacement and elevation control on the whole installation and fixing process of the welded steel plate and the foundation bolt group. And adjusting the elevation of the anchor plate foundation bolt supporting frame, after the frame body is stabilized, adjusting the elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate bolt through the adjustable screw rod to be in the same horizontal line, and controlling the levelness of the welded steel plate.
Description
Technical Field
The invention relates to fixing of foundation bolts, in particular to a method for accurately fixing foundation bolts of an anchor plate.
Background
First, there are related studies showing that: the stress steel bars in the members are not suitable for being welded with the embedded iron pieces, the welding performance of the foundation bolt steel is poor, large residual stress and weld defects are generated after welding, and the stress steel bars are easy to be brittle at the weld when being pulled, so that the stress steel bars are dangerous. Experiments show that some of the steel pipes are broken at the welding seam, so that the broken upper section is pulled out and cannot play the role of anchoring. Secondly, after the bolt group is welded with the stressed steel bar, the bolt group is easily disturbed by the whole steel bar when the concrete is poured and vibrated, and the bolt is more easily displaced and deformed. Therefore, independent fixing of anchor plate foundation bolts and improvement of precision control of embedded bolts are still technical points needing continuous improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for accurately fixing anchor bolts of an anchor plate, which can accurately fix the anchor bolts and is not welded with reinforcing steel bars of a bearing platform into a whole.
In order to solve the technical problem, the invention is realized as follows:
the method for accurately fixing anchor plate foundation bolts is characterized by comprising the following steps:
the method comprises the following steps: and (3) mounting an anchor plate foundation bolt support frame: the adjustable screw, the hand-screwed nut, the welding steel plate and the anchor plate are assembled into the anchor plate foundation bolt support frame, wherein the adjustable screw and the anchor plate are firstly vertically welded together to form support legs of the support frame, and then the welding steel plate and the support legs are connected into a whole by the hand-screwed nut.
The length of the screw is determined according to the bottom elevation of the anchor plate foundation bolt and half of the thickness of the cushion layer, and the screw needs to be at least 100mm higher than the bottom of the anchor plate foundation bolt; the screw rod with determined length is welded with the anchor plate.
The plane size of the welded steel plate deviates outwards by 50-100 mm according to the size of the outer contour of the anchor plate foundation bolt group, a vibrating hole with a certain width needs to be reserved in the middle of the welded steel plate, screw holes are reserved in four corners of the welded steel plate, and the manufacturing thickness of the welded steel plate is within the range of 10 mm.
The cross center line of the welded steel plate needs to be drawn in advance.
Step two, embedding construction of the anchor plate foundation bolt support frame: the method comprises the steps of performing line snapping on the center line of an anchor bolt group before the cushion layer is poured, placing an anchor plate anchor bolt supporting frame at the line snapping position through the specific position of the line snapping, placing a heavy object on the supporting frame to ensure that the supporting frame does not displace, observing whether the anchor plate anchor bolt supporting frame displaces or not in the cushion layer building process, adjusting before the cushion layer is initially set if the displacement occurs, and removing the heavy object after the cushion layer is set.
The anchor plate foundation bolt supporting frame is one of the key points of the fixing method, the connection between the screw rod and the welding steel plate needs to be firm, the shaking and loosening phenomenon does not exist, and the welding steel plate can move in the vertical direction of the screw rod easily.
The screw rod is connected with the welding steel plate, and after the steel bars are completely bound, the screw rod and the welding steel plate can be welded together, so that the steel bars are more stable.
Step three, installing the lower steel bars: before carrying out the reinforcing bar installation, can take out the welded steel plate in the anchor slab rag bolt supporting rack, the lower floor's reinforcing bar installation construction of being convenient for, after lower floor's reinforcing bar installation was accomplished, again with welded steel plate fixed on four screw rods.
Step four, pulling through the positioning copper wire: according to the center line position and the bottom elevation of the foundation bolt group, pulling through the N copper wires according to the requirement, and carrying out displacement and elevation control on the whole installation and fixing process of the welded steel plate and the foundation bolt group.
And the copper wire position is positioned at the height marking position at the bottom of the anchor plate foundation bolt group. Before the copper wire is pulled through, the measured data needs to be subjected to self-checking, and can be put into use after being subjected to supervision and acceptance.
The copper wire position is located anchor plate rag bolt group center and shifts 1/2 anchor plate plane size to the right or left side, just is located anchor plate sideline position department.
Fifthly, adjusting the elevation of the anchor plate foundation bolt support frame: after the support body is stable, the elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate bolt are adjusted to be in the same horizontal line through the adjustable screw rod, and the levelness of the welded steel plate is well controlled.
The elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate foundation bolt are determined by subtracting the length of the bolt from the elevation of the top of the bolt group.
The elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate bolt can be positioned through copper wires.
Levelness of the welded steel plate: the accessible is placed the spirit level on the welding steel sheet, finely tunes the elevation through the nut at four angles, is in between two parties until the spirit level bubble, then screws up the reinforcement.
Sixthly, mounting anchor plate foundation bolt groups: the anchor plate anchor bolt group and the positioning template are connected and fixed through the anchor plate anchor bolt nut, and therefore errors of relative positions between bolts are reduced.
The locating template is square template shape, the template preformed hole need be than bolt group corresponding, no deviation, wherein reserve and establish the bolt hole and need be 1 ~ 2mm bigger than the bolt. The positioning template is preferably 150mm higher than the surface of the upper steel bar. The size of the vibrating hole of the steel bar positioning template is reserved to meet the vibrating requirement.
Seventhly, connecting the anchor plate foundation bolt supporting frame with the anchor plate foundation bolt group: the anchor plate foundation bolt group is placed on a welding steel plate, the displacement deviation of the anchor plate foundation bolt group is adjusted according to a pulled-through copper wire and a central line on the welding steel plate, the welding steel plate and the bottom of the foundation bolt are welded together, and then the overall stability is checked.
In the welding process of the welding steel plate and the bottom of the foundation bolt, uncertain factors such as deformation of the welding steel plate are found, the uncertain factors are immediately processed, and elevation deviation is controlled well through the positioning copper wire.
Step eight: installing upper reinforcing steel bars: after the anchor plate foundation bolt supporting frame is connected with the anchor plate foundation bolt group, all the residual steel bars are installed, and the bolt group is rarely touched in the installation process.
The anchor plate foundation bolt is not welded with stressed steel bars such as a bearing platform and a ground beam.
Step nine: pouring concrete: before concrete pouring, the copper wires can be recycled. In the concrete pouring process, the discharge port does not directly impact the bolt group, the bolt group is vibrated through the vibrating hole, and the steel plate and the bolt group are not welded in a collision mode. And before the initial setting of the concrete, the anchor plate foundation bolt group is measured and controlled again through the theodolite.
The invention has the beneficial effects that: the elevation of each angle is controlled by utilizing the position-adjustable function of the screw rod, so that the overall elevation of the bolt group is controlled; the application is labor-saving, and only one person is needed to operate; the anchor plate anchor bolt can be independently fixed without being grounded, does not need to be welded with a stressed reinforcing steel bar, and is not disturbed by the reinforcing steel bar during concrete pouring.
The anchor plate foundation bolt fixing device is simple in structure, reasonable in structure, simple and convenient to install, good in using effect, capable of efficiently and accurately completing bolt installation, and capable of preventing the problems of weld defects and bolt group displacement and elevation deviation in the anchor plate foundation bolt fixing process.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a construction flow chart of the present invention.
Fig. 2 is a perspective view of the present invention.
FIG. 3 is a schematic plan view of the present invention.
FIG. 4 is a schematic front view of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1-4: an anchor plate foundation bolt accurate fixing method comprises the following steps:
the method comprises the following steps: and (3) mounting an anchor plate foundation bolt support frame: the adjustable screw 2, the hand-screwed nut 3, the welding steel plate 4 and the anchor plate 5 are assembled into the anchor plate foundation bolt supporting frame, wherein the adjustable screw 2 and the anchor plate 5 are vertically welded together to form supporting legs of the supporting frame, and then the welding steel plate 4 and the supporting legs are connected into a whole through the hand-screwed nut 3.
The supporting leg of the supporting frame is used for measuring the vertical distance from the bottom elevation to the bottom of the cushion layer 6 according to the construction drawing and the actual processing length of the anchor plate foundation bolt 7, and determining the processing length of the adjustable screw rod 2 according to the measured vertical distance plus 10 mm; then, determining the size of the anchor plate 5, wherein the thickness of the anchor plate 5 is preferably 10mm, and the plane size needs to be larger than 2 times of the diameter of the screw; and finally, vertically welding the adjustable screw rod 2 with the determined length with an anchor plate 5, wherein the anchor plate must be made of steel with stronger welding performance.
During actual construction, the plane size of the welded steel plate 4 deviates outwards by 50-100 mm according to the size of the outer contour of the anchor plate foundation bolt group 7, a vibrating hole with a certain width needs to be reserved in the middle, the bottom of the anchor plate foundation bolt group 7 cannot be suspended, screw holes need to be reserved in four corners in advance, the reserved screw holes need to be 1-2 mm larger than the diameter of the adjustable screw 2, and the thickness of the welded steel plate 4 is 10 mm.
During actual construction, the cross center line of the welded steel plate 4 needs to be marked on the surface in advance.
Step two, embedding construction of the anchor plate foundation bolt support frame: line snapping is carried out on the axis of the foundation bolt 7 before the cushion layer 6 is poured, the anchor plate foundation bolt supporting frame is placed at the line snapping position through the specific position of the line snapping, a heavy object is placed on the supporting frame to ensure that the supporting frame does not displace, whether the anchor plate foundation bolt supporting frame displaces or not is observed in the cushion layer building process, if the displacement occurs, the adjustment is carried out before the cushion layer 6 is initially set, and after the cushion layer 6 is set, the heavy object is moved away.
The anchor plate foundation bolt supporting frame is one of the key points of the fixing method, the connection between the screw rod 2 and the welding steel plate 4 needs to be firm, the shaking and loosening phenomenon does not exist, and the welding steel plate 4 can move in the vertical direction of the screw rod 2 easily.
The screw rod 2 is connected with the welding steel plate 4, and after the steel bars are completely bound, the screw rod 2 and the welding steel plate 4 can be welded together, so that the steel bars are more stable.
Step three, installing the lower steel bars: before carrying out the reinforcing bar installation, can take out welding steel sheet 4 in the anchor slab rag bolt supporting rack, the lower floor's reinforcing bar installation construction of being convenient for, after lower floor's reinforcing bar installation was accomplished, is fixing welding steel sheet 4 on four adjustable screw 2.
Step four, pulling through the positioning copper wire: according to the central line position and the bottom elevation of the column base bolt group 7, the N copper wires are pulled through as required, and displacement and elevation control is carried out on the whole installation and fixing process of the welding steel plate 4 and the foundation bolt group 7.
The copper wire position is located the height mark position at the bottom of the foot bolt group 7. Before the copper wire is pulled through, the measured data needs to be subjected to self-checking, and can be put into use after being subjected to supervision and acceptance.
Copper line position is located anchor plate rag bolt group 7 center and turns right or left skew 1/2 rag bolt 7 anchor plate plane size, just is located cat version rag bolt 7 anchor plate sideline position department and is suitable.
Fifthly, adjusting the elevation of the anchor plate foundation bolt support frame: after the support body is stable, the elevation of the top of the welded steel plate 4 and the elevation of the bottom of the anchor plate bolt 7 are adjusted to be in the same horizontal line through the adjustable screw rod 2, and the plane levelness of the welded steel plate 4 is well controlled.
The top elevation of the welded steel plate 4 and the bottom elevation of the anchor plate foundation bolt 7 are determined by subtracting the length of the bolt 7 from the top elevation of the bolt group 7.
4 top elevations of welding steel plate and 7 bottom elevations of anchor plate foundation bolts can be positioned through copper wires.
4 levelness of the welded steel plate: the accessible is placed the spirit level on welding steel sheet 4, twists nut 3 through the hand at four angles and finely tunes the elevation, is in between two parties until the spirit level bubble, then twists nut 3 with the hand and screws up the reinforcement.
Step six, installing an anchor plate foundation bolt group 7: the anchor plate anchor bolt group 7 and the positioning template 1 are connected and fixed through anchor plate anchor bolt nuts 8, and errors of relative positions of the bolts 7 are eliminated.
As the positioning template 1 in the figure 3 is a square steel template, the reserved bolt holes of the positioning template 1 need to correspond to the bolt groups, deviation does not exist, and the reserved bolt holes need to be 1-2 mm larger than the anchor plate foundation bolts 7 in diameter during actual manufacturing. The shape of the positioning template 1 is manufactured according to the shape of the bolt group. The installation of the positioning template 1 needs to be higher than the surface of the upper steel bar by 150mm, and the thickness of the positioning template 1 is 5 mm.
Step seven, connecting the anchor plate foundation bolt supporting frame with the anchor plate foundation bolt group 7: place anchor slab rag bolt group 7 on welding steel sheet 4, adjust its displacement deviation according to the copper line of drawing through and the central line on the welding steel sheet 4, will weld steel sheet 4 and 7 bottom of rag bolt all weld together, then inspect holistic steadiness.
In the welding process of the welding steel plate 4 and the bottom of the foundation bolt 7, uncertain factors such as deformation of the welding steel plate 4 are found, the uncertain factors are immediately processed, and elevation deviation is well controlled through a positioning copper wire.
Step eight, installing upper reinforcing steel bars: after the anchor plate foundation bolt supporting frame is connected with the anchor plate foundation bolt group 7, all the residual steel bars are installed, and the installation process needs to pay less attention to the bolt group 7.
The anchor plate foundation bolt 7 is not welded with stressed steel bars such as a bearing platform and a ground beam.
Step nine, pouring concrete: before concrete pouring, the copper wires can be recycled. In the concrete pouring process, the discharge port does not directly impact the bolt group 7, the position of the bolt group 7 needs to be vibrated through the vibrating hole, and the steel plate and the bolt group 7 do not need to be welded in a collision mode. And before the initial setting of the concrete, the anchor plate foundation bolt group is measured and controlled again through the theodolite.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (1)
1. The method for accurately fixing anchor plate foundation bolts is characterized by comprising the following steps:
the method comprises the following steps: and (3) mounting an anchor plate foundation bolt support frame: the adjustable screw, the hand-screwed nut, the welding steel plate and the anchor plate are assembled into the anchor plate foundation bolt support frame, wherein the adjustable screw and the anchor plate are firstly vertically welded together to form support legs of the support frame, and then the welding steel plate and the support legs are connected into a whole by the hand-screwed nut.
The length of the screw is determined according to the bottom elevation of the anchor plate foundation bolt and half of the thickness of the cushion layer, and the screw needs to be at least 100mm higher than the bottom of the anchor plate foundation bolt; the screw rod with determined length is welded with the anchor plate.
The plane size of the welded steel plate deviates outwards by 50-100 mm according to the size of the outer contour of the anchor plate foundation bolt group, a vibrating hole with a certain width needs to be reserved in the middle of the welded steel plate, screw holes are reserved in four corners of the welded steel plate, and the manufacturing thickness of the welded steel plate is within the range of 10 mm.
The cross center line of the welded steel plate needs to be drawn in advance.
Step two, embedding construction of the anchor plate foundation bolt support frame: the method comprises the steps of performing line snapping on the center line of an anchor bolt group before the cushion layer is poured, placing an anchor plate anchor bolt supporting frame at the line snapping position through the specific position of the line snapping, placing a heavy object on the supporting frame to ensure that the supporting frame does not displace, observing whether the anchor plate anchor bolt supporting frame displaces or not in the cushion layer building process, adjusting before the cushion layer is initially set if the displacement occurs, and removing the heavy object after the cushion layer is set.
The anchor plate foundation bolt supporting frame is one of the key points of the fixing method, the connection between the screw rod and the welding steel plate needs to be firm, the shaking and loosening phenomenon does not exist, and the welding steel plate can move in the vertical direction of the screw rod easily.
The screw rod is connected with the welding steel plate, and after the steel bars are completely bound, the screw rod and the welding steel plate can be welded together, so that the steel bars are more stable.
Step three, installing the lower steel bars: before carrying out the reinforcing bar installation, can take out the welded steel plate in the anchor slab rag bolt supporting rack, the lower floor's reinforcing bar installation construction of being convenient for, after lower floor's reinforcing bar installation was accomplished, again with welded steel plate fixed on four screw rods.
Step four, pulling through the positioning copper wire: according to the center line position and the bottom elevation of the foundation bolt group, pulling through the N copper wires according to the requirement, and carrying out displacement and elevation control on the whole installation and fixing process of the welded steel plate and the foundation bolt group.
And the copper wire position is positioned at the height marking position at the bottom of the anchor plate foundation bolt group. Before the copper wire is pulled through, the measured data needs to be subjected to self-checking, and can be put into use after being subjected to supervision and acceptance.
The copper wire position is located anchor plate rag bolt group center and shifts 1/2 anchor plate plane size to the right or left side, just is located anchor plate sideline position department.
Fifthly, adjusting the elevation of the anchor plate foundation bolt support frame: after the support body is stable, the elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate bolt are adjusted to be in the same horizontal line through the adjustable screw rod, and the levelness of the welded steel plate is well controlled.
The elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate foundation bolt are determined by subtracting the length of the bolt from the elevation of the top of the bolt group.
The elevation of the top of the welded steel plate and the elevation of the bottom of the anchor plate bolt can be positioned through copper wires.
Levelness of the welded steel plate: the accessible is placed the spirit level on the welding steel sheet, finely tunes the elevation through the nut at four angles, is in between two parties until the spirit level bubble, then screws up the reinforcement.
Sixthly, mounting anchor plate foundation bolt groups: the anchor plate and anchor bolt groups are fixedly connected with the positioning template through anchor plate and anchor bolt nuts, and errors of relative positions between anchor bolts are reduced.
The locating template is square template shape, the template preformed hole need be than bolt group corresponding, no deviation, wherein reserve and establish the bolt hole and need be 1 ~ 2mm bigger than the bolt. The positioning template is preferably 150mm higher than the surface of the upper steel bar. The size of the vibrating hole of the positioning template is reserved to meet the vibrating requirement.
Seventhly, connecting the anchor plate foundation bolt supporting frame with the anchor plate foundation bolt group: the anchor plate foundation bolt group is placed on a welding steel plate, the displacement deviation of the anchor plate foundation bolt group is adjusted according to a pulled-through copper wire and a central line on the welding steel plate, the welding steel plate and the bottom of the foundation bolt are welded together, and then the overall stability is checked.
In the welding process of the welding steel plate and the bottom of the foundation bolt, uncertain factors such as deformation of the welding steel plate are found, the uncertain factors are immediately processed, and elevation deviation is controlled well through the positioning copper wire.
Step eight: installing upper reinforcing steel bars: after the anchor plate foundation bolt supporting frame is connected with the anchor plate foundation bolt group, all the residual steel bars are installed, and the installation process is less concerned with touching the foundation bolt group.
The anchor plate foundation bolt is not welded with stressed steel bars such as a bearing platform and a ground beam.
Step nine: pouring concrete: before concrete pouring, the copper wires can be recycled. In the concrete pouring process, the discharge port does not directly impact the bolt group, the bolt group is vibrated through the vibrating hole, and the steel plate and the bolt group are not welded in a collision mode. And before the initial setting of the concrete, the anchor plate foundation bolt group is measured and controlled again through the theodolite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010889253.4A CN112127641A (en) | 2020-08-28 | 2020-08-28 | Accurate fixing method for anchor plate foundation bolt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010889253.4A CN112127641A (en) | 2020-08-28 | 2020-08-28 | Accurate fixing method for anchor plate foundation bolt |
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| CN112127641A true CN112127641A (en) | 2020-12-25 |
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| CN202010889253.4A Pending CN112127641A (en) | 2020-08-28 | 2020-08-28 | Accurate fixing method for anchor plate foundation bolt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073674A (en) * | 2021-04-08 | 2021-07-06 | 中铁四局集团有限公司 | Positioning and adjusting device for concrete embedded anchor bolt |
| CN113653199A (en) * | 2021-08-30 | 2021-11-16 | 中冶建工集团有限公司 | Construction method for embedding stiffening anchor plate foundation bolt |
| CN114033191A (en) * | 2021-12-13 | 2022-02-11 | 中国化学工程第十一建设有限公司 | Anchor plate type foundation bolt positioning method |
| CN114575372A (en) * | 2022-05-05 | 2022-06-03 | 河南天丰钢结构建设有限公司 | High-rise steel structure deep foundation pit raft foundation anchor bolt pre-embedding construction method |
| CN115012436A (en) * | 2022-04-28 | 2022-09-06 | 浙江中天恒筑钢构有限公司 | Reverse-sequence construction method for raft foundation with steel structure embedded column base |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113073674A (en) * | 2021-04-08 | 2021-07-06 | 中铁四局集团有限公司 | Positioning and adjusting device for concrete embedded anchor bolt |
| CN113653199A (en) * | 2021-08-30 | 2021-11-16 | 中冶建工集团有限公司 | Construction method for embedding stiffening anchor plate foundation bolt |
| CN114033191A (en) * | 2021-12-13 | 2022-02-11 | 中国化学工程第十一建设有限公司 | Anchor plate type foundation bolt positioning method |
| CN115012436A (en) * | 2022-04-28 | 2022-09-06 | 浙江中天恒筑钢构有限公司 | Reverse-sequence construction method for raft foundation with steel structure embedded column base |
| CN114575372A (en) * | 2022-05-05 | 2022-06-03 | 河南天丰钢结构建设有限公司 | High-rise steel structure deep foundation pit raft foundation anchor bolt pre-embedding construction method |
| CN114575372B (en) * | 2022-05-05 | 2022-08-12 | 河南天丰钢结构建设有限公司 | Pre-burying construction method for foundation bolts of raft foundation of deep foundation pit with high-rise steel structure |
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Application publication date: 20201225 |