CN111877756A - Cast-in-place concrete split bolt hole plugging device and method - Google Patents
Cast-in-place concrete split bolt hole plugging device and method Download PDFInfo
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- CN111877756A CN111877756A CN202010888476.9A CN202010888476A CN111877756A CN 111877756 A CN111877756 A CN 111877756A CN 202010888476 A CN202010888476 A CN 202010888476A CN 111877756 A CN111877756 A CN 111877756A
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- split bolt
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/007—Plugs to close openings in forms' surface
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Abstract
The invention discloses a device and a method for plugging a cast-in-place concrete split bolt hole, which are characterized in that two annular grooves which are arranged at intervals are dug in the wall of the split bolt hole along the inner circumference of the wall of the split bolt hole, then a sealing plate is respectively arranged in the two annular grooves, the end surface of the sealing plate positioned in the annular groove can be contacted with the side wall of the annular groove, then with two shroudings along split bolt hole axial fastening connection, carry out the sealed packing of thick liquids in the outside of two shroudings at last, respectively with cast in situ concrete's outer wall face and interior wall parallel and level, utilize shrouding structure and annular slot tip cooperation to form sealed space in the split bolt hole, separate split bolt hole both ends, can effectively prevent cast in situ concrete structure split bolt hole seepage problem, utilize the split bolt hole that the supplementary cast-in-situ process of reducing protective tube formed conical surface structure, the phenomenon that can effectively prevent the seepage refluence of outer wall takes place.
Description
Technical Field
The invention relates to the field of plugging reserved holes of reinforced concrete structures, in particular to a device and a method for plugging a cast-in-place concrete split bolt hole.
Background
At present, the metal templates commonly adopted by the cast-in-place concrete structure of the high-rise building are an all-steel large curtain and an aluminum alloy template, the all-steel large curtain and the aluminum alloy template are utilized for concrete pouring, after the pouring is finished, because the inner and outer templates need to be fixed by the split bolts, the split bolt holes of the metal templates have larger apertures due to the design reason, the split bolt holes need to be plugged in the post-treatment process, the traditional plugging method adopts the direct filling and plugging construction method of waterproof mortar, and after the filling is finished, due to the fluidity of the mortar, the counter-pull bolt holes have no water backflow phenomenon in the slope direction, and in the process of directly filling and plugging by adopting waterproof mortar, the leakage phenomenon is easy to occur in the bonding gap between the waterproof mortar and the concrete structure, the sealing performance of the plugging cannot be effectively ensured, in the post-processing process, the leakage problem caused by the plugging tightness of the split bolt holes can not be avoided.
Disclosure of Invention
The invention aims to provide a device and a method for plugging a cast-in-place concrete counter-pulling bolt hole, which are used for overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cast-in-place concrete split bolt hole plugging method comprises the following steps:
step 1), two annular grooves which are arranged at intervals are dug in the hole wall of the split bolt along the inner circumferential direction of the hole wall of the split bolt;
step 2), place a shrouding respectively in two annular grooves, the shrouding terminal surface that is located annular groove can contact rather than place annular groove lateral wall, then with two shroudings along split bolt hole axial fastening connection, carries out the sealed packing of thick liquids in the outside of two shroudings at last, respectively with cast in situ concrete's outer wall face and interior wall parallel and level.
Further, in step 1), in two formwork installation processes of cast-in-place concrete pouring, reducing protective pipes are embedded in design positions of the split bolts, the reducing protective pipes are located between the two formworks, the split bolts connected by the two formworks are located in the reducing protective pipes, after the cast-in-place concrete is finished, the formworks on two sides of the cast-in-place concrete and the split bolts and the reducing protective pipes in the split bolt holes are removed, and the split bolt holes with the reducing structures in the hole diameters are formed.
Furthermore, the small end of the reducing protective pipe is fixedly connected with the inner side of the inner wall template, and the large end of the reducing protective pipe is fixedly connected with the inner side of the outer wall template.
Furthermore, two ends of the reducing protective pipe are respectively contacted with the inner side surfaces of the two templates in the installation process of the two templates.
Further, before placing the closing plate, the inner wall of the split bolt hole is roughened.
Further, when placing the shrouding, paint sealing material layer or set up sealed stagnant water adhesive tape at the lateral wall of annular slot, then place the annular slot with the shrouding and make shrouding one side and sealing material layer or sealed stagnant water adhesive tape contact.
The utility model provides a cast in situ concrete split bolt hole plugging device, includes shrouding and sealing ring, wherein is equipped with the through-hole that is used for bolted connection in the middle of the shrouding, and the sealing ring includes two semicircle rings, and two semicircle ring concatenations form the sealing ring, and the outer lane diameter of sealing ring is greater than the outer lane diameter of shrouding, and the inner circle diameter of sealing ring is less than the outer lane diameter of shrouding, and the outer lane diameter of shrouding is less than and treats shutoff split bolt hole diameter, and the outer lane diameter of sealing ring is.
A cast-in-place concrete split bolt hole plugging device comprises a first sealing plate, a second sealing plate and a sealing ring, wherein a through hole is formed in the second sealing plate, a connecting bolt is fixed on the first sealing plate, one end of the connecting bolt can penetrate through the through hole in the second sealing plate and is connected through a nut, and the end face of the nut is in contact with the end face of one side of the second sealing plate; the sealing ring is of an annular structure and comprises two semicircular rings, the two semicircular rings are spliced to form the sealing ring, the outer ring diameter of the first sealing plate is larger than that of the second sealing plate, the outer ring diameter of the sealing ring is larger than that of the second sealing plate, and the inner ring diameter of the sealing ring is smaller than that of the second sealing plate.
Furthermore, a gasket is arranged between the nut and the second sealing plate.
Further, the outer ring diameter of the second sealing plate is smaller than the maximum diameter of the small-diameter annular groove on the wall of the split bolt hole, the outer ring diameter of the sealing ring is larger than the maximum diameter of the small-diameter annular groove on the wall of the split bolt hole, the outer ring diameter of the first sealing plate is smaller than the maximum diameter of the large-diameter annular groove on the wall of the split bolt hole, and the outer ring diameter of the first sealing plate is larger than the minimum diameter of the large-diameter annular groove on the wall of the split bolt hole.
Further, the first closing plate is of a conical structure.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a method for plugging a cast-in-place concrete split bolt hole, which comprises the steps of digging two annular grooves arranged at intervals in the wall of the split bolt hole along the circumferential direction in the wall of the split bolt hole, then respectively placing a sealing plate in the two annular grooves, enabling the end surface of the sealing plate positioned in the annular groove to be in contact with the side wall of the annular groove where the sealing plate is positioned, then axially fastening and connecting the two sealing plates along the split bolt hole, finally sealing and filling slurry outside the two sealing plates to be level with the outer wall surface and the inner wall surface of cast-in-place concrete respectively, forming a sealing space in the split bolt hole by utilizing the matching of the sealing plate structure and the end part of the annular groove, and separating the two ends of the split bolt hole, thereby effectively preventing the problem.
Further, in two template installation processes of cast-in-place concrete pouring, at the pre-buried reducing protective pipe in split bolt design position, the reducing protective pipe is located between two templates, the split bolt that two templates are connected is located the reducing protective pipe, cast-in-place concrete is accomplished the back, get rid of the template of cast-in-place concrete both sides and the downthehole split bolt and the reducing protective pipe of split bolt, form the aperture for the split bolt hole of reducing structure, adopt the reducing structure, be convenient for fluting and shutoff, the little one end of reducing protective pipe diameter is fixed adjacent inboard in interior wall template, the big one end of diameter is fixed adjacent in exterior wall template inboard, form the split bolt hole of conical surface structure, the phenomenon that can effectively prevent the seepage refluence of outer wall takes place.
Furthermore, the two ends of the reducing protective pipe are respectively contacted with the inner side surfaces of the two templates in the installation process of the two templates, so that a stable structure can be formed for the split bolt holes.
Furthermore, the inner wall of the split bolt hole is roughened before the sealing plate is placed, and the slurry sealing and filling process is facilitated to be combined with the inner wall of the split bolt hole.
Further, when placing the shrouding, paint sealing material layer or set up sealed stagnant water adhesive tape at the lateral wall of annular slot, then place the annular slot with the shrouding and make shrouding one side and sealing material layer or sealed stagnant water adhesive tape contact, utilize sealing adhesive tape sealed, improved the leakproofness between shrouding and the annular slot.
The invention relates to a plugging device for a cast-in-place concrete split bolt hole, which utilizes a first sealing plate, a second sealing plate and a sealing ring to form a plugging sealing structure, wherein the second sealing plate is provided with a through hole; the sealing ring is annular structure, including two semicircle rings, two semicircle ring concatenations form the sealing ring, the outer lane diameter of first shrouding is greater than the outer lane diameter of second shrouding, the outer lane diameter of sealing ring is greater than the outer lane diameter of second shrouding, the inner circle diameter of sealing ring is less than the outer lane diameter of second shrouding, utilize second shrouding and sealing ring cooperation to form seal structure, stable in structure utilizes shrouding structure and annular slot tip cooperation to form seal space in the split bolt hole, to split bolt hole both ends separate, can prevent effectively that cast-in-place concrete structure from split bolt hole seepage problem.
Furthermore, a gasket is arranged between the nut and the second sealing plate, so that the connection sealing stability is improved.
Drawings
Fig. 1 is a schematic view of an occlusion device in an embodiment of the invention.
Fig. 2 is a schematic view of an installation structure of the plugging device in the embodiment of the invention.
Fig. 3 is a schematic diagram of a slotting structure in an embodiment of the invention.
Fig. 4 is a schematic structural diagram of the reducing protective pipe in the plugging process in the embodiment of the invention.
FIG. 5 is a schematic view of a plugging structure of a pair of equal-diameter bolt holes according to an embodiment of the present invention.
The device comprises a 1-diameter-variable protective pipe, a 2-first annular groove, a 3-second annular groove, a 4-split bolt hole plugging device, a 5-first sealing plate, a 6-connecting bolt, a 8-second sealing plate, a 9-gasket, a 10-nut, a 11-sealing ring, an A-water stop adhesive tape, B-expansion waterproof mortar, a C-mesh and a D-polyurethane waterproof coating.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
a cast-in-place concrete split bolt hole plugging method comprises the following steps:
step 1), in the process of installing two templates cast by cast-in-place concrete, pre-burying a reducing protective pipe with a reducing diameter at the design position of a split bolt, wherein the reducing protective pipe is positioned between the two templates, two ends of the reducing protective pipe are respectively contacted with the inner side surfaces of the two templates, and the split bolt connected with the two templates is positioned in the reducing protective pipe; as shown in fig. 4;
the reducing protective pipe is a PVC pipe, is of a conical structure, and has an isosceles trapezoid cross section along the axis.
The one end that the reducing protective tube diameter is little is fixed to connect in the interior wall template inboard, and the one end that the diameter is big is fixed to connect in the exterior wall template inboard, and the reducing protective tube adopts reducing tubular construction, and the one end that the diameter is little is fixed to connect in the interior wall template inboard, is convenient for take out the reducing protective tube after two templates are demolishd on the one hand to carry out cyclic utilization, on the other hand can make the split bolt hole slope by the inboard outside landslide prevention water backflow in advance of cast in situ concrete.
In the installation process, the axis of the reducing protective pipe is perpendicular to the plane where the two templates are located, accuracy of pre-buried positions is facilitated, and uniform stress and fastening of the split bolt supporting and fixing template are guaranteed.
Step 2), after the cast-in-place concrete is finished, removing the templates on two sides of the cast-in-place concrete, and the split bolts and the variable-diameter protective pipes in the split bolt holes, and chiseling two annular grooves in the wall of the split bolt hole along the inner circumference of the wall of the split bolt hole, wherein the two annular grooves are axially arranged at intervals along the split bolt hole, and the grooving structure is shown in fig. 3;
specifically, the depth of two annular grooves which are chiseled in the hole wall of the split bolt along the inner circumferential direction of the hole wall of the split bolt is 10mm, and the width of the two annular grooves is 10 mm; in the present application, as shown in fig. 1, the two annular grooves are a first annular groove 2 and a second annular groove 3, respectively, and the diameter of the first annular groove 2 is smaller than that of the second annular groove 3.
Step 3), after the annular grooves are cut, placing a sealing plate in each of the two annular grooves, enabling the end face of the sealing plate located in each annular groove to be in contact with the side wall of the annular groove, then connecting the two sealing plates in an axial fastening mode along the split bolt holes to form a sealing structure, and then carrying out slurry sealing filling on the outer sides of the two sealing plates, wherein the sealing plates are flush with the outer wall face and the inner wall face of the cast-in-place concrete respectively.
Specifically, before the sealing plate is placed, roughening treatment is carried out on the inner wall of the split bolt hole;
this application adopts the reducing protective tube of reducing pipe, and the split bolt hole that forms is the reducing hole along the axial, and consequently, two annular groove diameters that offer at the split bolt hole inner wall are different, and when placing the shrouding, paint sealing material layer or set up sealing water stop adhesive tape at annular groove's lateral wall, then place the shrouding and make shrouding one side and sealing material layer or sealing water stop adhesive tape contact in the annular groove.
Specifically, after sealing a water stop adhesive tape in a small-diameter annular groove, a first sealing plate is transferred from the outer wall side of a split bolt hole, then two semicircular rings of a sealing ring are rotated and contracted and then placed in the small-diameter annular groove, the small-diameter annular groove is internally expanded to form a complete circular ring, and then the sealing ring 11 is contacted with the end face of the small-diameter annular groove and clamped and pressed on the side wall of the small-diameter annular groove for primary fixation; then after sealing a water stop adhesive tape in the large-diameter annular groove, transferring a second sealing plate from the outer wall side of the split bolt hole, and enabling a bolt on the second sealing plate to penetrate through the through hole of the first sealing plate, pressing the second sealing plate on the inner side wall of the large-diameter annular groove, and fastening through a nut; successively block respectively through first shrouding, second shrouding and the cooperation of sealing water stop adhesive tape A and press on two annular slot, played the dual purpose of effectively cutting off the water, the rethread nut is two shroudings closely fixed on annular slot's lateral wall, and it is integrative with split bolt hole integration, further promote the effect of cutting off the water.
After 24-hour test of injecting water to the outer wall side of the split bolt hole for no leakage, respectively plugging the inner wall hole and the outer wall hole by using the expansion waterproof mortar B, sequentially filling the expansion waterproof mortar B, the mesh C and the polyurethane waterproof coating D when plugging the outer wall hole, and finally using the expansion waterproof mortar as a sealing surface layer. Multiple waterproof measures ensure that the metal template split bolt holes are blocked without leakage. According to the invention, the pre-buried reducing protective pipe is adopted to form a slope-direction falling slope, the annular groove structure is matched with the sealing plates to form an axial sealing structure, the two sealing plates form multiple waterproof and water-intercepting measures, the condition that water of an outer wall leaks from a split bolt hole to an inner wall is avoided, the operation is simple and easy, and the leakage rate of the outer wall caused by the split bolt hole is mainly reduced.
As shown in fig. 5, for plugging the existing split bolt hole with a cylindrical diameter, the device for plugging the cast-in-place concrete split bolt hole comprises a sealing plate and a sealing ring 11, wherein a through hole for connecting a bolt is formed in the middle of the sealing plate, the sealing ring 11 comprises two semicircular rings, the two semicircular rings are spliced to form the sealing ring, the diameter of the outer ring of the sealing ring 11 is larger than that of the outer ring of the sealing plate, the diameter of the inner ring of the sealing ring 11 is smaller than that of the outer ring of the sealing plate, the diameter of the outer ring of the sealing plate is smaller than that of the split bolt hole to be plugged, and the; during plugging, two annular grooves which are arranged at intervals are cut in the split bolt hole along the inner circumference of the wall of the split bolt hole, the diameter of the bottom of the annular groove is larger than the diameter of the outer ring of the sealing ring 11, then the sealing ring 11 is respectively placed in the two annular grooves, the outer ends of the two sealing rings 11 are respectively provided with a sealing plate, and then the two sealing plates are fastened and connected by utilizing bolts.
As shown in fig. 1 and 2, the cast-in-place concrete split bolt hole plugging device comprises a first sealing plate 5, a second sealing plate 8 and a sealing ring 11, wherein a through hole is formed in the second sealing plate 8, a connecting bolt 3 is fixed on the first sealing plate 5, one end of the connecting bolt 3 can penetrate through the through hole in the second sealing plate 8 and is connected through a nut 10, and the end surface of the nut 10 is in contact with the end surface of one side of the second sealing plate 8; sealing ring 11 is the loop configuration, including two semicircle rings, and two semicircle ring concatenations form the sealing ring, and the outer lane diameter of first shrouding 5 is greater than the outer lane diameter of second shrouding 8, and the outer lane diameter of sealing ring 11 is greater than the outer lane diameter of second shrouding 8, and the inner circle diameter of sealing ring 11 is less than the outer lane diameter of second shrouding 8.
A gasket 9 is arranged between the nut 10 and the second closing plate 8. First shrouding 5 is the toper structure, and the big terminal surface of toper structure and major diameter annular groove's terminal surface contact can prevent the outer wall infiltration seepage flow.
In the plugging process, two annular grooves which are arranged at intervals are formed in a split bolt hole of cast-in-place concrete along the inner circumferential direction of the split bolt hole wall, wherein the diameter of an outer ring of a second sealing plate 8 is smaller than the maximum diameter of a small-diameter annular groove on the split bolt hole wall, the diameter of an outer ring of a sealing ring 11 is larger than the maximum diameter of the small-diameter annular groove on the split bolt hole wall, the diameter of an outer ring of a first sealing plate 5 is smaller than the maximum diameter of a large-diameter annular groove on the split bolt hole wall, and the diameter of the outer ring of the first sealing plate 5 is larger than the minimum diameter of the large-diameter annular groove on the; in the shutoff process, put into the minor diameter annular groove in the split bolt pore wall with second shrouding 8 from the large aperture one end of split bolt hole, then put into minor diameter annular groove after rotating the shrink with two semicircle rings of sealing ring 11, strut in minor diameter annular groove and form complete ring, then with sealing ring 11 and minor diameter annular groove end face contact, put into the major diameter annular groove in the split bolt pore wall with first shrouding 5 from the large aperture one end of split bolt hole, then follow split bolt hole axial fastening connection with two shroudings, form seal structure, then carry out the sealed packing of thick liquids in the outside of two shroudings, wall parallel and level in wall face and the wall with cast in situ concrete respectively.
Or in the split bolt hole of the existing cylindrical through hole structure, two pairs of second closing plates 8 and sealing rings 11 are matched in the two annular grooves for sealing.
Claims (10)
1. A cast-in-place concrete split bolt hole plugging method is characterized by comprising the following steps:
step 1), two annular grooves which are arranged at intervals are dug in the hole wall of the split bolt along the inner circumferential direction of the hole wall of the split bolt;
step 2), place a shrouding respectively in two annular grooves, the shrouding terminal surface that is located annular groove can contact rather than place annular groove lateral wall, then with two shroudings along split bolt hole axial fastening connection, carries out the sealed packing of thick liquids in the outside of two shroudings at last, respectively with cast in situ concrete's outer wall face and interior wall parallel and level.
2. The cast-in-place concrete split bolt hole plugging method according to claim 1, characterized in that in step 1), in the installation process of two templates cast in-place concrete, a reducing protective pipe is pre-embedded at the design position of a split bolt, the reducing protective pipe is positioned between the two templates, the split bolt connected by the two templates is positioned in the reducing protective pipe, after the cast-in-place concrete is completed, the templates at two sides of the cast-in-place concrete, the split bolt and the reducing protective pipe in the split bolt hole are removed, and the split bolt hole with the diameter-variable structure is formed.
3. The method for plugging the cast-in-place concrete counter-pulling bolt hole according to claim 2, wherein the end with the small diameter of the reducing protection pipe is fixedly and adjacently connected to the inner side of the inner wall formwork, and the end with the large diameter is fixedly and adjacently connected to the inner side of the outer wall formwork.
4. The cast-in-place concrete split bolt hole plugging method according to claim 2, wherein two ends of the reducing protection pipe are respectively in contact with the inner side surfaces of the two templates in the installation process of the two templates.
5. A method of plugging a cast-in-place concrete split bolt hole according to claim 1 or 2, wherein the inner wall of the split bolt hole is roughened before the sealing plate is placed.
6. The cast-in-place concrete counter-pulling bolt hole plugging method according to claim 1 or 2, characterized in that when the sealing plate is placed, a sealing material layer is coated on the side wall of the annular groove or a sealing water-stopping adhesive tape is arranged, and then the sealing plate is placed in the annular groove so that one side of the sealing plate is in contact with the sealing material layer or the sealing water-stopping adhesive tape.
7. A cast-in-place concrete split bolt hole plugging device for the cast-in-place concrete split bolt hole plugging method according to claim 1, which is characterized by comprising a sealing plate and a sealing ring (11), wherein a through hole for bolt connection is formed in the middle of the sealing plate, the sealing ring (11) comprises two semicircular rings, the two semicircular rings are spliced to form the sealing ring, the outer ring diameter of the sealing ring (11) is larger than that of the sealing plate, the inner ring diameter of the sealing ring (11) is smaller than that of the sealing plate, the outer ring diameter of the sealing plate is smaller than that of a split bolt hole to be plugged, and the outer ring diameter of the sealing ring (11) is larger than that of the split bolt hole to.
8. A cast-in-place concrete split bolt hole plugging device used for the cast-in-place concrete split bolt hole plugging method according to claim 2 is characterized by comprising a first sealing plate (5), a second sealing plate (8) and a sealing ring (11), wherein a through hole is formed in the second sealing plate (8), a connecting bolt (3) is fixed on the first sealing plate (5), one end of the connecting bolt (3) can penetrate through the through hole in the second sealing plate (8) and is connected through a nut (10), and the end face of the nut (10) is in end face contact with one side of the second sealing plate (8); sealing ring (11) are the loop configuration, including two semicircle rings, and two semicircle ring concatenations form the sealing ring, and the outer lane diameter of first shrouding (5) is greater than the outer lane diameter of second shrouding (8), and the outer lane diameter of sealing ring (11) is greater than the outer lane diameter of second shrouding (8), and the inner circle diameter of sealing ring (11) is less than the outer lane diameter of second shrouding (8).
9. A cast-in-place concrete split bolt hole plugging device according to claim 8, wherein the outer ring diameter of the second closing plate (8) is smaller than the maximum diameter of the small diameter annular groove on the split bolt hole wall, the outer ring diameter of the sealing ring (11) is larger than the maximum diameter of the small diameter annular groove on the split bolt hole wall, the outer ring diameter of the first closing plate (5) is smaller than the maximum diameter of the large diameter annular groove on the split bolt hole wall, and the outer ring diameter of the first closing plate (5) is larger than the minimum diameter of the large diameter annular groove on the split bolt hole wall.
10. A cast-in-place concrete split bolt hole plugging device according to claim 8, characterized in that the first closing plate (5) is of a conical structure, and a gasket (9) is arranged between the nut (10) and the second closing plate (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010888476.9A CN111877756A (en) | 2020-08-28 | 2020-08-28 | Cast-in-place concrete split bolt hole plugging device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010888476.9A CN111877756A (en) | 2020-08-28 | 2020-08-28 | Cast-in-place concrete split bolt hole plugging device and method |
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| CN111877756A true CN111877756A (en) | 2020-11-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982978A (en) * | 2021-02-26 | 2021-06-18 | 中国十七冶集团有限公司 | Plastic template hole plug and using method thereof |
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2020
- 2020-08-28 CN CN202010888476.9A patent/CN111877756A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982978A (en) * | 2021-02-26 | 2021-06-18 | 中国十七冶集团有限公司 | Plastic template hole plug and using method thereof |
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