CN109826441B - Lateral pre-embedding installation method for C-shaped hafen groove of concrete structure - Google Patents
Lateral pre-embedding installation method for C-shaped hafen groove of concrete structure Download PDFInfo
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- CN109826441B CN109826441B CN201811631074.XA CN201811631074A CN109826441B CN 109826441 B CN109826441 B CN 109826441B CN 201811631074 A CN201811631074 A CN 201811631074A CN 109826441 B CN109826441 B CN 109826441B
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Abstract
The invention relates to the field of municipal engineering construction, and particularly discloses a lateral pre-buried installation method for a C-shaped hafen groove of a concrete structure. It comprises the following steps: 1, preparing a half-section water stopping screw rod; welding and assembling an inner support halfen groove; 3, fixing the inner bracing halfen groove and the reinforcing steel bar together; and 4, installing the template. The invention has simple installation and definite stress, the reinforcing mesh is not limited but is depended on but is not depended on, the influence of the reinforcing mesh on the reinforcing mesh is eliminated, the reinforcing mesh is tightly attached to the template, the template is not damaged, the reinforcing mesh is firm and stable after the installation, the reworking phenomenon is avoided, the construction cost is reduced, the installation quality and the apparent quality are greatly improved, and the reinforcing mesh can be widely used for the installation construction of the embedded channel.
Description
Technical Field
The invention relates to the field of municipal engineering construction, in particular to a lateral pre-buried installation method for a C-shaped hafen groove of a concrete structure.
Background
The flat plate embedded part has been applied for years in the history of buildings in China, and has quite mature experience in both production process and stress analysis. The application of the groove-type embedded part is completely the entrance of early foreign enterprises, and the groove-type embedded part is applied to the curtain wall of the high-end building in China and is gradually and widely used.
Firstly, before the template encapsulation, adopt T type bolt to be fixed in the template surface with the slot type built-in fitting, utilize the fastening of bolt, ensure that template installation and concrete placement in-process slot type built-in fitting position do not squint to this guarantee slot type built-in fitting's installation quality. However, this mounting method has the following disadvantages: 1. a T-shaped bolt is drilled and installed on the template, and cement paste overflows along the hole when concrete is poured and vibrated to cause a honeycomb or a boss at the position; 2. the T-shaped bolt is fixed on the template, the strength of concrete is low when the template is removed, and the concrete around the T-shaped bolt is disturbed, so that the stress performance of the Hafen groove is weakened; 3. the T-shaped bolt holes are different in position on the template, construction needs to be conducted according to the number when the template is erected again, time and labor are wasted, and the service life of the template is shortened due to the existence of more bolt holes.
And secondly, after the binding of the steel bars is finished and the acceptance is qualified, directly welding the halan groove on the steel bar net where the wall surface is located, wherein the exposed length of the halan groove is the thickness of the steel bar protection layer, so that the interval between the steel bar nets is fixed, the close contact between the groove type embedded part and the template is ensured, and the installation quality of the groove type embedded part is ensured. However, this mounting method has the following disadvantages: 1. the hafen groove is directly welded on the reinforcing steel bar net to form a whole, and the reinforcing steel bar net must be disturbed during template installation and concrete pouring and vibrating construction, so that a gap is generated between the hafen groove and the template, and the hafen groove is embedded in a concrete structure; 2. the hafen groove needs to be vertically welded on a reinforcing mesh, so that the tight fit between the hafen groove and the template can be ensured, and if deviation exists, a wedge-shaped gap is formed between the hafen groove and the template, so that the mounting quality of the bracket is influenced.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a quick and efficient lateral pre-buried installation method for a C-shaped hafen groove of a concrete structure.
The invention is realized by the following technical scheme:
a lateral pre-buried installation method for a C-shaped hafen groove of a concrete structure is characterized by comprising the following steps:
the first stage is as follows: according to different thicknesses of concrete walls, three-section water-stopping screws with different lengths and different diameters are manufactured, and a half-section water-stopping screw is formed for standby after a turnover screw and a plastic plug at one end of the three-section water-stopping screw are removed;
and a second stage: selecting a steel sleeve with the diameter 1.5-2.0 times that of the three-section water stop screw or the anchor, and cutting the steel sleeve into small sections of 2.0-3.0 cm; if the thickness of the wall plate steel bar protective layer plus the thickness of the steel bar mesh is larger than the anchoring length, sleeving a small section of steel sleeve on the half section of water stop screw rod in the first stage; if the thickness of the wall plate steel bar protective layer and the thickness of the steel bar mesh are smaller than the anchoring length, sleeving the small-section steel sleeve on the anchoring nail; welding the half-section water-stopping screw with the anchor on the C-shaped halfen groove to form an inner support halfen groove; then, the crank ruler and the steel ruler are used for detecting the inner support halfen groove;
and a third stage: after finishing binding of the wallboard reinforcing steel bars, reporting and testing, after the supervision engineer checks and accepts the qualification, firstly measuring and paying off, drawing an embedded part embedding control line on the reinforcing steel bars or in the middle of the reinforcing steel bar grids by using a red pen according to an embedded part point position arrangement diagram and an elevation size according to a civil engineering wallboard size control line, if the position is positioned between the reinforcing steel bar grids, adopting additional reinforcing steel bars with the diameter not smaller than a water stop screw rod and the length not smaller than the horizontal interval of the grids, horizontally welding the additional reinforcing steel bars on the inner sides of the vertical reinforcing steel bars close to the reinforcing steel bar grids, then drawing the embedded part embedding control line on the additional reinforcing steel bars, and then welding small sections of steel sleeves on; if the location is right on the rebar, the steel casing is welded to the rebar.
A fourth stage: and (6) installing the template.
The deflection of the Hafen groove is increased along with the increase of the length of the Hafen groove, the number of the half-section water-stopping screw rods is determined according to the length of the Hafen groove and the number of the anchoring bolts, at least two half-section water-stopping screw rods are arranged when the number of the anchoring bolts is more than 3, and the maximum distance is calculated according to the deflection allowable value of the Hafen groove; when the number of the anchoring bolts is less than 3, at least one half-section water stop screw rod is arranged.
The invention has the beneficial effects that:
the invention has simple installation and definite stress, the reinforcing mesh is not limited but is depended on but is not depended on, the influence of the reinforcing mesh on the reinforcing mesh is eliminated, the reinforcing mesh is tightly attached to the template, the template is not damaged, the reinforcing mesh is firm and stable after the installation, the reworking phenomenon is avoided, the construction cost is reduced, the installation quality and the apparent quality are greatly improved, and the reinforcing mesh can be widely used for the installation construction of the embedded channel.
Drawings
The invention will be further described with reference to the accompanying drawings;
FIG. 1 is a schematic front view of a three-section water stop screw;
fig. 2 is a schematic structural diagram of welding C-shaped hafen slots on a reinforcing mesh;
FIG. 3 is a schematic view of the installed formwork;
fig. 4 is a schematic structural diagram of a half-section water stop screw.
In the figure, 1 turnover screw, 2 plastic plugs, 3 waterproof split inner supports, 4 steel sleeves, 5 butterfly buckles, 6 fastening bolts, 7 templates, 8C-shaped halfen grooves, 9 half-section water stop screws, 10 inner support halfen grooves and 11 anchors are arranged.
Detailed Description
The drawings illustrate specific embodiments of the invention. As shown in fig. 1 to 4, the lateral embedding installation method for the C-shaped hafen slot of the concrete structure comprises the following steps:
the first stage is as follows: according to different thicknesses of concrete walls, three-section water-stopping screws with different lengths and different diameters are manufactured, and a half-section water-stopping screw 9 is formed after a turnover screw 1 and a plastic plug 2 at one end of the three-section water-stopping screw are removed for later use; the three-section water-stopping screw is the prior art, can be purchased in the market, and only needs to be customized into different lengths and diameters, as shown in fig. 1, the three-section water-stopping screw consists of a turnover screw 1, a plastic plug 2, a waterproof oppositely-pulling inner support 3, a plastic plug 2 and a turnover screw 1, wherein the turnover screw 1 is matched with a butterfly buckle 5 and a fastening bolt 6, and the middle waterproof oppositely-pulling inner support 3 is used for controlling the thickness of a wall body, so that the thickness of the wall body = the length of the waterproof oppositely-pulling inner support 3+ the thickness of a hafen groove + the length of a rivet, the diameter of the waterproof oppositely-pulling support is determined by the thickness of the wall plate, the thicker the larger the diameter of the wall plate is, for example, the thickness of the wall plate is less than 50 cm, the optional diameter is; the plastic plugs 2 at the two ends are positioning ribs for positioning the template 7; the screw rods connected with the two ends of the waterproof opposite-pulling inner support 3 are turnover screw rods 1 which can be easily assembled and disassembled and can be used in a turnover way;
and a second stage: selecting a steel sleeve 4 with the diameter 1.5-2.0 times that of the three-section water stop screw or anchor 11, and cutting the steel sleeve into small sections of 2.0-3.0 cm; if the thickness of the wall plate steel bar protective layer plus the thickness of the steel bar mesh is larger than the length of the anchor 11, sleeving the small-section steel sleeve 4 on the half-section water stop screw 9 in the first stage; if the thickness of the wall plate steel bar protective layer and the thickness of the steel bar mesh are smaller than the length of the anchor bolts 11, sleeving the small-section steel sleeve 4 on the anchor bolts 11; then welding the half-section water-stopping screw 9 with the anchor on the C-shaped halfen groove 8 to form an inner support halfen groove 10; along with the increase of the length of the hafen groove, the deflection of the hafen groove is increased, the number of the half-section water-stop screw rods 9 is determined according to the length of the hafen groove and the number of the anchoring bolts 11, at least two half-section water-stop screw rods 9 are arranged when the number of the anchoring bolts 11 is more than 3, the maximum distance is calculated according to the deflection allowable value of the hafen groove (for example, the size of the C-shaped hafen groove 8 is 38mm 23mm L, the thickness of channel steel is 4mm, the distance of the anchoring bolts 11 is 250mm, the distance of the vertical steel pipes of the template 7 is 150mm, the loads such as vibration, pouring and the like during concrete pouring are considered, the maximum distance 890mm of the internal support screw rods is calculated according to the deflection allowable value of the hafen groove, the distance of the anchoring bolts 11 is; when the number of the anchoring bolts 11 is less than 3, at least one half-section water stopping screw 9 is arranged, namely one or two half-section water stopping screws 9 can be arranged; then, the crank ruler and the steel ruler are used for testing the internal bracing Halfen groove 10, so that the Halfen groove is ensured to be vertical to the three-section water stop screw, and the distance from the end face of the Halfen groove to the plastic plug 2 is ensured to be the thickness of the wall;
and a third stage: after finishing binding of the reinforcing steel bars of the wall board, reporting and testing, after being accepted by a supervision engineer, firstly measuring and paying off, drawing an embedded part embedding control line on the reinforcing steel bars or in the middle of the reinforcing steel bar grids by using a red pen according to an embedded part point position arrangement diagram and an elevation size according to a civil engineering wall board size control line, if the position is positioned between the reinforcing steel bar grids, adopting additional reinforcing steel bars with the diameter not smaller than a water stop screw rod and the length not smaller than the horizontal interval of the grids, horizontally welding the additional reinforcing steel bars at the inner sides of the vertical reinforcing steel bars close to the reinforcing steel bar grids, then drawing the embedded part embedding control line on the additional reinforcing steel bars, and then welding the small sections of steel; if this position is right on the steel reinforcement, the steel casing 4 is welded to the steel reinforcement.
In order to ensure that no welding spot exists in the range of the steel bar protective layer, the steel sleeve 4 is welded inside the wall plate steel bar mesh or on the additional steel bar of the wall plate steel bar mesh, and the steel sleeve 4 is required to be vertical to the plane of the steel bar mesh during welding. After the steel sleeve 4 is completely fixed, the degree of freedom of the Hafen groove in each direction on the steel bar net surface is limited. The half-section water stop screw 9 penetrates into the steel sleeve 4, so that the degree of freedom of the Hafen groove in the direction vertical to the plane of the mesh reinforcement is reserved, and the Hafen groove can freely move in the direction vertical to the plane of the mesh reinforcement.
After the reinforcing bars of the wall board are bound, reinforcing bar grids are formed, and the reinforcing bar grids are integrated on the plane of the reinforcing bar grids (the plane parallel to the wall board), so that the formwork 7 is slightly displaced in the direction of the plane when being installed, but the displacement generated on the plane vertical to the reinforcing bar grids is larger. The haunch can move freely along the direction vertical to the plane of the reinforcing steel bar (and the plane of the template 7), thereby ensuring that the haunch cannot be dislocated along with the movement of the reinforcing mesh.
A fourth stage: the template 7 is installed, as shown in fig. 3, the middle is the inner layer Hafen groove of the invention, and the upper and lower two are normal three-section water stop screws. And after the third-stage construction is finished, the thickness of the wall body is ensured. Because the length of the inner bracing haute mine groove 10 is the thickness of the wall, the inner bracing haute mine groove 10 is firmly clamped between the two templates 7 after the templates 7 are reinforced. The Hafen groove surface is jointed with the 0 surface of the template 7 in a gap under the action of the inner support, and the plastic plug 2 and the turnover screw 1 are firmly installed on the other template 7, so that the Hafen groove is prevented from shifting in the concrete pouring and vibrating process.
The hafen groove is tightly attached to the surface of the opposite template 7 without being connected with the back template 7 through the plastic plug 2, the butterfly-shaped buckle 5 and the turnover screw 1, and the butterfly-shaped buckle 5 and the turnover screw 1 are dismounted during mould dismounting, so that the concrete mould dismounting has no influence on the C-shaped hafen groove 8.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (2)
1. A lateral pre-buried installation method for a C-shaped hafen groove of a concrete structure is characterized by comprising the following steps:
the first stage is as follows: according to different thicknesses of concrete walls, three-section water-stopping screws with different lengths and different diameters are manufactured, and a half-section water-stopping screw is formed for standby after a turnover screw and a plastic plug at one end of the three-section water-stopping screw are removed;
and a second stage: selecting a steel sleeve with the diameter 1.5-2.0 times that of the three-section water stop screw or the anchor, and cutting the steel sleeve into small sections of 2.0-3.0 cm; if the thickness of the wall plate steel bar protective layer plus the thickness of the steel bar mesh is larger than the anchoring length, sleeving a small section of steel sleeve on the half section of water stop screw rod in the first stage; if the thickness of the wall plate steel bar protective layer and the thickness of the steel bar mesh are smaller than the anchoring length, sleeving the small-section steel sleeve on the anchoring nail; welding the half-section water-stopping screw with the anchor on the C-shaped halfen groove to form an inner support halfen groove; then, the crank ruler and the steel ruler are used for detecting the inner support halfen groove;
and a third stage: after finishing binding of the wallboard reinforcing steel bars, reporting and testing, after the supervision engineer checks and accepts the qualification, firstly measuring and paying off, drawing an embedded part embedding control line on the reinforcing steel bars or in the middle of the reinforcing steel bar grids by using a red pen according to an embedded part point position arrangement diagram and an elevation size according to a civil engineering wallboard size control line, if the position is positioned between the reinforcing steel bar grids, adopting additional reinforcing steel bars with the diameter not smaller than a water stop screw rod and the length not smaller than the horizontal interval of the grids, horizontally welding the additional reinforcing steel bars on the inner sides of the vertical reinforcing steel bars close to the reinforcing steel bar grids, then drawing the embedded part embedding control line on the additional reinforcing steel bars, and then welding small sections of steel sleeves on; if the position is right on the steel bar, welding the steel sleeve on the steel bar;
a fourth stage: and (6) installing the template.
2. The lateral embedded installation method for the C-shaped hafner slot of the concrete structure as claimed in claim 1, wherein the deflection of the hafner slot is increased along with the increase of the length of the hafner slot, the number of the half-section water stop screws depends on the length of the hafner slot and the number of the anchoring bolts, at least two half-section water stop screws are arranged when the number of the anchoring bolts is more than 3, and the maximum distance is calculated according to the deflection allowable value of the hafner slot; when the number of the anchoring bolts is less than 3, at least one half-section water stop screw rod is arranged.
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| CN201811631074.XA CN109826441B (en) | 2018-12-29 | 2018-12-29 | Lateral pre-embedding installation method for C-shaped hafen groove of concrete structure |
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| CN201811631074.XA CN109826441B (en) | 2018-12-29 | 2018-12-29 | Lateral pre-embedding installation method for C-shaped hafen groove of concrete structure |
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| CN112459262B (en) * | 2020-11-30 | 2022-05-10 | 中国一冶集团有限公司 | Novel Hafen groove and construction method thereof |
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| DE3531998A1 (en) * | 1985-09-07 | 1987-03-19 | Halfeneisen Gmbh & Co Kg | Anchor rail which can be embedded in concrete or the like |
| DE3918044A1 (en) * | 1989-06-02 | 1990-12-06 | Halfeneisen Gmbh & Co Kg | Fixing bolts for anchor rails - have second heads formed by cylindrical blocks retained by upsetting end of bolt |
| CN107090915A (en) * | 2017-05-31 | 2017-08-25 | 中建新疆建工（集团）有限公司 | A kind of mounting structure and method for concrete component that the fragrant groove in Kazakhstan is nuzzled in advance |
| CN207048069U (en) * | 2017-08-20 | 2018-02-27 | 中国水利水电第七工程局有限公司 | A kind of pipe gallery segmental timbering |
| CN108086355B (en) * | 2017-12-14 | 2019-12-03 | 中国二十二冶集团有限公司 | Pre-buried channel flow installing and fixing method under cast-in-place piping lane traditional handicraft |
| CN208105909U (en) * | 2018-04-18 | 2018-11-16 | 中建一局集团第二建筑有限公司 | The mounting and positioning device of pre-buried channel flow |
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