CN113638598A - Anti-radiation concrete opposite-pulling bolt with reserved labyrinth-type holes and construction method - Google Patents
Anti-radiation concrete opposite-pulling bolt with reserved labyrinth-type holes and construction method Download PDFInfo
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- CN113638598A CN113638598A CN202111074415.XA CN202111074415A CN113638598A CN 113638598 A CN113638598 A CN 113638598A CN 202111074415 A CN202111074415 A CN 202111074415A CN 113638598 A CN113638598 A CN 113638598A
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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
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
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- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
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- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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Abstract
The invention discloses a split bolt with a radiation-proof concrete reserved labyrinth hole and a construction method, wherein a wall bushing, a structure reserved hole and a split bolt structure related to a radiation concrete template are combined, so that the number of weak parts in a radiation-proof concrete structure is reduced, and the radiation leakage risk is fundamentally reduced; the embedded sleeve adopts a non-straight-through broken line structure, the radiation-proof coating is sprayed on the inner side of the embedded sleeve, and radiation leakage is effectively prevented by arranging the labyrinth embedded sleeve on the basis of not influencing the normal function of the wall bushing or the structural preformed hole; the port of the embedded sleeve is provided with a protective sleeve, so that the slurry stopping and limiting effects are good; the installation efficiency is improved by arranging the reinforcing steel bar connector, the assembly line operation can be realized, and the construction period is shortened. The split bolts of the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts act together, so that the rationality of the finishing stress of the radiation-proof concrete structure template system is greatly improved, and the safety of high and large template engineering is guaranteed.
Description
Technical Field
The invention relates to the technical field of radiation-proof concrete formworks, in particular to a split bolt with a labyrinth-shaped hole reserved in radiation-proof concrete and a construction method.
Background
The radiation-proof concrete structure has the characteristic of being not easy to be penetrated by radioactive rays such as gamma rays, X rays or neutron radiation, and the like, and is widely applied to ensuring the safe use of the irradiation technology in the industries of medical treatment, food, medicine radiation sterilization, and the like.
Because the radiation-proof concrete structure has large volume, super thickness and heavy unit capacity, high and large template engineering is involved in the concrete pouring process, and a formwork system is required to have sufficient bearing capacity, rigidity and stability so as to reliably bear the dead weight and lateral pressure of the radiation-proof concrete and the construction load in the construction process. In order to ensure the safety of the radiation-proof concrete structure template engineering, the split bolts are arranged on the basis of the traditional template and a support system. Usually, a radiation-proof concrete structure inevitably needs to be provided with a through-wall bushing or a structure reserved hole, and the parts such as the split bolt holes, the through-wall bushing, the structure reserved hole and the like become weak links of the whole radiation-proof system. In fact, the template split bolt holes, the wall bushing and the structure reserved holes of the radiation-proof concrete structure are separately treated, the number of weak parts in the radiation-proof concrete structure is considerable, and the hidden danger of radiation leakage is large.
Therefore, in order to reduce the weakening risk of the whole radiation-proof structure caused by the template split bolt holes, the wall bushing and the structure reserved holes in the radiation-proof concrete structure, the radiation-proof concrete structure is enabled to be safer and more reliable as a whole, and an effective radiation-proof concrete split bolt with reserved labyrinth holes is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a split bolt with a radiation-proof concrete reserved labyrinth type hole and a construction method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a split bolt with a radiation-proof concrete reserved labyrinth type hole on one hand, which comprises a pre-buried sleeve, a steel bar connector, a split bolt and a water stop sheet;
the embedded sleeve is of a non-straight-through broken line structure, through holes at two ends of the embedded sleeve are parallel to the surface of the wall body to be poured, and a first protective sleeve and a second protective sleeve are respectively covered on the through holes; a through hole through which the recyclable threaded rod passes is reserved in the middle of the first protective sleeve; the second protective sleeve is designed as a sealing plug; the first protective sleeve and the second protective sleeve tightly support the templates on the two sides respectively; the connection sections of the through openings at the two ends of the embedded sleeve are horizontally arranged, and the connection sections of the two parallel sections can be obliquely arranged;
the reinforcing steel bar connector is welded and fixed at the other end of the parallel section of the embedded sleeve for mounting the split bolt;
the split bolt consists of an embedded threaded rod, a recyclable bolt joint, a sealing joint, a fastener and a nut; the embedded threaded rod and the recoverable threaded rod are connected with the embedded sleeve through a steel bar connector; one end of the embedded threaded rod is fixed on the steel bar connector, and the other end of the embedded threaded rod is tightly propped against the template after a sealing joint is installed; the sealing joint is used for connecting a recoverable bolt joint; the recyclable threaded rod penetrates through the embedded sleeve, one end of the recyclable threaded rod is fixed on the steel bar connector, and the other end of the recyclable threaded rod is provided with a first protective sleeve and then tightly props up the template;
the recyclable threaded rod and the recyclable bolt joint sequentially penetrate through the template, the vertical edge and the transverse edge and are screwed up and fixed in a counter-pulling mode through the fastener and the nut;
and water stop sheets are arranged at the two ends of the embedded sleeve and the embedded threaded rod.
Furthermore, the split bolts of the radiation-proof concrete reserved labyrinth holes are arranged at weak parts of radiation-proof systems such as reserved wall-penetrating sleeves and structural reserved holes, and other areas adopt conventional pre-buried split bolts; the arrangement of the split bolts of the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts is determined by the design of the template split bolts.
Furthermore, the inner side of the embedded sleeve is sprayed with a radiation-proof coating which has the functions of reducing radiation ray reflection and absorbing certain radiation rays; the length of each parallel section of the embedded sleeve is not less than 1/3 of the thickness of the wall to be cast; the angle of the connection section in the embedded casing pipe is set in consideration of convenience and feasibility of subsequent threading and other construction; after the construction related to the holes such as the threading in the embedded sleeve is completed, the radiation-proof material with increased density is adopted for sealing and filling, and the adverse effect of the reduction of the effective thickness of the protective layer caused by the hole penetrating through the wall is eliminated.
Furthermore, pre-buried threaded rod, recoverable threaded rod and reinforcing bar connector pass through straight threaded connection, when guaranteeing tensile strength, the dismantlement of the recoverable threaded rod of later stage of being convenient for.
Furthermore, the outer diameter of the recyclable threaded rod is smaller than the inner diameter of the embedded sleeve, so that the recyclable threaded rod can smoothly pass through the embedded sleeve; the inner diameter of the through hole of the first protective sleeve is consistent with the outer diameter of the recyclable threaded rod, so that effective limiting and fixing effects are achieved; the sealing joint is tightly attached to the bolt hole of the embedded threaded rod and used for being connected with a recoverable bolt joint, and the functions of grout stopping and sealing connection are achieved.
The invention also provides a construction method of the split bolt with the labyrinth holes reserved in the radiation-proof concrete, which comprises the following steps:
(1) adopting anti-radiation concrete reserved labyrinth type hole split bolts and conventional pre-buried split bolts to enhance the formwork supporting effect of the underground anti-radiation concrete structure pouring; firstly binding a radiation-proof concrete structure reinforcing steel bar; fixing the embedded sleeve with the installed first protective sleeve, the second protective sleeve, the steel bar connector, the embedded threaded rod, the sealing joint and the water stop sheet and the conventional embedded split bolt at the position determined by the design of the supporting formwork;
(2) installing templates at two sides of a to-be-poured anti-radiation concrete structure, and tightly pushing a first protective sleeve, a second protective sleeve and a sealing joint at the end of an embedded threaded rod at two ends of an embedded sleeve against the templates at two sides;
(3) the recyclable threaded rod penetrates through the transverse edge, the vertical edge, the template and the first protective sleeve, is fixedly connected with the steel bar connector, and is screwed and fixed through the fastener and the nut;
(4) penetrating a recoverable bolt joint through the transverse edge, the vertical edge and the template, tightly connecting the recoverable bolt joint with the embedded threaded rod through the sealing joint, and then screwing and fixing the recoverable bolt joint through a fastener and a nut;
(5) repeating the steps (3) and (4) to complete the installation of the split bolts of the radiation-proof concrete reserved labyrinth holes; completing the installation of the conventional pre-buried split bolt;
(6) pouring radiation-proof concrete; after the strength of the radiation-proof concrete reaches the standard requirement, sequentially removing the nut, the fastener, the recyclable threaded rod and the recyclable bolt joint; removing conventional pre-buried split bolts; dismantling the transverse ribs, the vertical ribs and the templates;
(7) cleaning floating ash in the bolt hole of the embedded threaded rod and the sealing joint hole, and removing the first protective sleeve and the second protective sleeve; blocking the bolt holes of the embedded threaded rods and the holes of the sealing joints by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and spraying a radiation-proof coating after blocking;
(8) after the construction related to the holes such as the threading in the embedded sleeve is finished, the embedded sleeve is sealed and filled with the anti-radiation material with the increased density, and anti-radiation coatings are sprayed on the two ends of the embedded sleeve after the embedded sleeve is sealed and filled.
Further, in the step (1), the embedded sleeve and the conventional embedded split bolt can be bound and installed on the structural steel bar through a fastener or a steel wire for temporary fixation; in the step (2), the first protective sleeve and the second protective sleeve can be coated with a release agent before installation, so that later-stage disassembly is facilitated.
Further, in the step (5), the installed anti-radiation concrete reserved labyrinth holes and the conventional embedded split bolts are kept horizontal.
Further, in the step (6), the removed recyclable threaded rod, recyclable bolt joints, fasteners, nuts, templates, vertical ribs and transverse ribs can be recycled.
Further, in the steps (7) and (8), the radiation-proof mortar, the radiation-proof coating and the radiation-proof material for sealing and filling are mixed with materials which have high density and certain radiation absorption capacity.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the split bolt structure with the radiation-proof concrete reserved labyrinth holes, the wall bushing, the structure reserved holes and the split bolt structure related to the radiation concrete template are combined, the number of weak parts in the radiation-proof concrete structure is reduced, and the radiation leakage risk of the weak parts of the radiation-proof concrete structure is fundamentally reduced.
2. The embedded sleeve is arranged in a non-straight-through broken line, the inner side of the embedded sleeve is sprayed with the radiation-proof coating with the functions of reducing radiation ray reflection and absorbing certain radiation rays, and radiation leakage can be effectively prevented by arranging the labyrinth embedded sleeve on the basis of not influencing the normal functions of the wall bushing or the structural preformed hole; after the construction related to the holes such as threading in the embedded sleeve is finished, the radiation-proof material with increased density is adopted for sealing and filling, so that the adverse effect of the reduction of the effective thickness of the protective layer caused by the through-wall holes is eliminated; and after all holes of the radiation-proof concrete structure are plugged, a radiation-proof coating is sprayed, comprehensive measures are taken to reduce the risk of radiation leakage, and the radiation-proof concrete structure is enabled to be safer.
3. The first protective sleeve and the second protective sleeve arranged at the port of the embedded sleeve play good roles in stopping grout and limiting, and can assist the embedded sleeve to tightly push against the template, prevent the embedded sleeve from displacing and prevent cement paste from polluting the inside of the embedded sleeve in the process of casting radiation-proof concrete; the first protective sleeve and the second protective sleeve are coated with the release agent before installation, so that the first protective sleeve and the second protective sleeve can be easily installed and removed, and the construction is convenient.
4. The arrangement of the reinforcing steel bar connector greatly improves the installation efficiency of the embedded threaded rod and the recyclable threaded rod in the split bolt, has simple and convenient construction and good connection effect, is convenient for the later dismantling operation of the recyclable threaded rod, can realize the assembly line operation, further improves the construction efficiency and shortens the construction period.
5. The split bolts of the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts act together, so that the rationality of the finishing stress of a radiation-proof concrete structure template system is greatly improved, and the safety of high and large template engineering is guaranteed.
6. The recyclable threaded rod, the recyclable bolt joint, the fastener, the nut, the template, the vertical rib and the transverse rib can be recycled, and the energy-saving, environment-friendly and low-carbon building concept is met.
Drawings
FIG. 1 is a schematic view of a split bolt structure of a radiation-proof concrete reserved labyrinth hole;
FIG. 2 is a schematic view of an embedded sleeve, an embedded threaded rod, and a water stop tab;
FIG. 3 is a schematic view of a retrievable threaded rod and a fastener and nut;
FIG. 4 is a schematic view of a retrievable bolted joint and fasteners and nuts;
in the figure, an embedded sleeve 1, a first protective sleeve 1-1, a second protective sleeve 1-2, a steel bar connector 2, a split bolt 3, an embedded threaded rod 3-1, a recoverable threaded rod 3-2, a recoverable bolt joint 3-3, a sealing joint 3-4, a fastener 3-5, a nut 3-6, a water stop sheet 4, a template 5, a vertical ridge 6 and a transverse ridge 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the split bolt with the radiation-proof concrete reserved labyrinth holes provided by the embodiment of the invention comprises a pre-buried sleeve 1, a steel bar connector 2, a split bolt 3 and a water stop 4;
the embedded sleeve 1 is of a non-straight-through broken line structure, through holes at two ends of the embedded sleeve are parallel to the surface of a wall body to be poured, and a first protective sleeve 1-1 and a second protective sleeve 1-2 are respectively covered on the through holes; a through hole through which the recyclable threaded rod 3-2 passes is reserved in the middle of the first protective sleeve 1-1; the second protective sleeve 1-2 is designed as a sealing plug; the first protective sleeve 1-1 and the second protective sleeve 1-2 tightly support the formworks 5 on the two sides respectively; the connection sections of the through openings at the two ends of the embedded sleeve 1 are horizontally arranged, and the connection sections of the two parallel sections can be obliquely arranged;
the reinforcing steel bar connector 2 is welded and fixed at the other end of the parallel section of the embedded sleeve 1 for mounting the split bolt 3;
the split bolt 3 consists of an embedded threaded rod 3-1, a recyclable threaded rod 3-2, a recyclable bolt joint 3-3, a sealing joint 3-4, a fastener 3-5 and a nut 3-6; the embedded threaded rod 3-1 and the recyclable threaded rod 3-2 are connected with the embedded sleeve 1 through a steel bar connector 2; one end of the embedded threaded rod 3-1 is fixed on the steel bar connector 2, and the other end of the embedded threaded rod is provided with a sealing joint 3-4 and then supports against the template 5; the sealing joint 3-4 is used for connecting the recoverable bolt joint 3-3; the recyclable threaded rod 3-2 penetrates through the embedded sleeve 1, one end of the recyclable threaded rod is fixed on the steel bar connector 2, and the other end of the recyclable threaded rod is provided with a first protective sleeve 1-1 and then tightly props up the template 5;
the recyclable threaded rod 3-2 and the recyclable bolt joint 3-3 sequentially penetrate through the template 5, the vertical edge 6 and the transverse edge 7 and are screwed up and fixed in a counter-pulling mode through the fastener 3-5 and the nut 3-6; the connecting structure of the recoverable threaded rod 3-2, the fastener 3-5 and the nut 3-6 is shown in figure 3, and the connecting structure of the recoverable bolt joint 3-3, the fastener 3-5 and the nut 3-6 is shown in figure 4;
and water stop sheets 4 are arranged at two ends of the embedded sleeve 1 and the embedded threaded rod 3-1.
Specifically, the split bolts of the radiation-proof concrete reserved labyrinth holes are arranged at weak parts of radiation-proof systems such as reserved wall-penetrating sleeves and structural reserved holes, and other areas adopt conventional pre-buried split bolts; the arrangement of the split bolts of the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts is determined by the design of the template split bolts.
Specifically, the inner side of the embedded sleeve 1 is sprayed with a radiation-proof coating which has the functions of reducing radiation ray reflection and absorbing certain radiation rays; the length of each parallel section of the embedded sleeve 1 is not less than 1/3 of the thickness of the wall to be cast; the angle of the connection section in the embedded casing 1 is set in consideration of convenience and feasibility of subsequent threading and other construction; after the construction related to the holes such as the threading in the embedded sleeve 1 is completed, the radiation-proof material with increased density is adopted for sealing and filling, and the adverse effect of the reduction of the effective thickness of the protective layer caused by the through-wall holes is eliminated.
Specifically, the embedded threaded rod 3-1 and the recyclable threaded rod 3-2 are connected with the steel bar connector 2 through straight threads, so that the tensile strength is guaranteed, and meanwhile, the recyclable threaded rod 3-2 can be conveniently detached in the later period.
Specifically, the outer diameter of the recyclable threaded rod 3-2 is smaller than the inner diameter of the embedded sleeve 1, so that the recyclable threaded rod 3-2 can smoothly pass through the embedded sleeve 1; the inner diameter of the through hole of the first protective sleeve 1-1 is consistent with the outer diameter of the recyclable threaded rod 3-2, so that effective limiting and fixing effects are achieved; the sealing joint 3-4 is tightly attached to the bolt hole of the embedded threaded rod 3-1 and used for connecting the recoverable bolt joint 3-3, and plays roles in stopping grout and sealing connection.
The embodiment of the invention provides a construction method of a split bolt with a radiation-proof concrete reserved labyrinth type hole, which comprises the following steps:
(1) adopting anti-radiation concrete reserved labyrinth type hole split bolts and conventional pre-buried split bolts to enhance the formwork supporting effect of the underground anti-radiation concrete structure pouring; firstly binding a radiation-proof concrete structure reinforcing steel bar; fixing the embedded sleeve 1 provided with the first protective sleeve 1-1, the second protective sleeve 1-2, the steel bar connector 2, the embedded threaded rod 3-1, the sealing joint 3-4 and the water stop sheet 4 and the conventional embedded split bolt at the position determined by the formwork design;
(2) installing templates 5 on two sides of a to-be-poured anti-radiation concrete structure, and tightly jacking the templates 5 on the two sides by using a first protective sleeve 1-1 and a second protective sleeve 1-2 at two ends of an embedded sleeve 1 and a sealing joint 3-4 at the end of an embedded threaded rod 3-1;
(3) the recyclable threaded rod 3-2 penetrates through the transverse ridge 7, the vertical ridge 6, the template 5 and the first protective sleeve 1-1, is fixedly connected with the steel bar connector 2, and is screwed and fixed through the fastener 3-5 and the nut 3-6;
(4) the recyclable bolt joint 3-3 penetrates through the transverse edge 7, the vertical edge 6 and the template 5, is tightly connected with the embedded threaded rod 3-1 through the sealing joint 3-4, and is screwed and fixed through the fastener 3-5 and the nut 3-6;
(5) repeating the steps (3) and (4) to complete the installation of the split bolts of the radiation-proof concrete reserved labyrinth holes; completing the installation of the conventional pre-buried split bolt;
(6) pouring radiation-proof concrete; after the strength of the radiation-proof concrete reaches the standard requirement, sequentially removing the nuts 3-6, the fasteners 3-5, the recyclable threaded rods 3-2 and the recyclable bolt joints 3-3; removing conventional pre-buried split bolts; dismantling the transverse ribs 7, the vertical ribs 6 and the template 5;
(7) cleaning floating ash in bolt holes of the embedded threaded rod 3-1 and holes of the sealing joint 3-4, and removing the first protective sleeve 1-1 and the second protective sleeve 1-2; blocking a bolt hole 3-1 of an embedded threaded rod and a hole of a sealing joint 3-4 by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and spraying a radiation-proof coating after blocking;
(8) after the construction related to the holes such as the threading in the embedded sleeve 1 is completed, the embedded sleeve 1 is sealed and filled with the anti-radiation material with the increased density, and anti-radiation coatings are sprayed at two ends of the embedded sleeve 1 after the embedded sleeve is sealed and filled.
Specifically, in the step (1), the embedded sleeve 1 and the conventional embedded split bolt can be bound and installed on the structural steel bar through a fastener or a steel wire for temporary fixation; in the step (2), the first protective sleeve 1-1 and the second protective sleeve 1-2 can be coated with a release agent before installation, so that later-stage disassembly is facilitated.
Specifically, in the step (5), the installed split bolts with the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts are kept horizontal.
Specifically, in the step (6), the removed recyclable threaded rod 3-2, recyclable bolt joint 3-3, fastener 3-5, nut 3-6, template 5, vertical ridge 6 and transverse ridge 7 can be recycled.
Specifically, in the steps (7) and (8), the radiation-proof mortar, the radiation-proof coating and the radiation-proof material for sealing and filling are mixed with materials which have high density and certain radiation absorption capacity.
The foregoing is only a preferred embodiment of the present invention, and although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. The utility model provides a radiation protection concrete reserves split bolt in labyrinth formula hole which characterized in that: comprises an embedded sleeve (1), a steel bar connector (2), a split bolt (3) and a water stop sheet (4);
the embedded sleeve (1) is of a non-straight-through broken line structure, through holes at two ends of the embedded sleeve are parallel to the surface of a wall body to be poured, and a first protective sleeve (1-1) and a second protective sleeve (1-2) are respectively covered on the embedded sleeve; a through hole through which the recyclable threaded rod (3-2) passes is reserved in the middle of the first protective sleeve (1-1); the second protective sleeve (1-2) is designed as a sealing plug; the first protective sleeve (1-1) and the second protective sleeve (1-2) tightly support the formworks (5) on the two sides respectively; the connection sections of the through openings at the two ends of the embedded sleeve (1) are horizontally arranged, and the connection sections of the two parallel sections can be obliquely arranged;
the steel bar connector (2) is welded and fixed at the other end of the parallel section of the embedded sleeve (1) for mounting the split bolt (3);
the split bolt (3) consists of an embedded threaded rod (3-1), a recyclable threaded rod (3-2), a recyclable bolt joint (3-3), a sealing joint (3-4), a fastener (3-5) and a nut (3-6); the embedded threaded rod (3-1) and the recoverable threaded rod (3-2) are connected with the embedded sleeve (1) through a steel bar connector (2); one end of the embedded threaded rod (3-1) is fixed on the steel bar connector (2), and the other end of the embedded threaded rod is provided with a sealing joint (3-4) and then tightly props against the template (5); the sealing joint (3-4) is used for connecting a recoverable bolt joint (3-3); the recyclable threaded rod (3-2) penetrates through the embedded sleeve (1), one end of the recyclable threaded rod is fixed on the steel bar connector (2), and the other end of the recyclable threaded rod is provided with a first protective sleeve (1-1) and then tightly supports the template (5);
the recyclable threaded rod (3-2) and the recyclable bolt joint (3-3) sequentially penetrate through the template (5), the vertical edge (6) and the transverse edge (7) and are screwed up and oppositely pulled and fixed through the fastener (3-5) and the nut (3-6);
and water stop sheets (4) are arranged at two ends of the embedded sleeve (1) and the embedded threaded rod (3-1).
2. The anti-radiation concrete split bolt with reserved labyrinth holes as claimed in claim 1, which is characterized in that: the split bolts of the radiation-proof concrete reserved labyrinth holes are arranged at weak parts of radiation-proof systems such as reserved wall-penetrating sleeves and structural reserved holes, and other areas adopt conventional pre-buried split bolts; the arrangement of the split bolts of the radiation-proof concrete reserved labyrinth holes and the conventional embedded split bolts is determined by the design of the template split bolts.
3. The anti-radiation concrete split bolt with reserved labyrinth holes as claimed in claim 1, which is characterized in that: the inner side of the embedded sleeve (1) is sprayed with a radiation-proof coating which has the functions of reducing the reflection of radiation rays and absorbing certain radiation rays; the length of each parallel section of the embedded sleeve (1) is not less than 1/3 of the thickness of the wall to be cast; the angle of the connection section in the embedded sleeve (1) is set in consideration of convenience and feasibility of subsequent threading and other construction; after the construction related to the holes such as the threading in the embedded sleeve (1) is completed, the radiation-proof material with increased density is adopted for sealing and filling, and the adverse effect of the reduction of the effective thickness of the protective layer caused by the wall-through holes is eliminated.
4. The anti-radiation concrete split bolt with reserved labyrinth holes as claimed in claim 1, which is characterized in that: the embedded threaded rod (3-1), the recyclable threaded rod (3-2) and the steel bar connector (2) are connected through straight threads, so that the recyclable threaded rod (3-2) can be conveniently detached in the later period while the tensile strength is guaranteed.
5. The anti-radiation concrete split bolt with reserved labyrinth holes as claimed in claim 1, which is characterized in that: the outer diameter of the recyclable threaded rod (3-2) is smaller than the inner diameter of the embedded sleeve (1) so as to ensure that the recyclable threaded rod (3-2) can smoothly pass through the embedded sleeve (1); the inner diameter of the through hole of the first protective sleeve (1-1) is consistent with the outer diameter of the recoverable threaded rod (3-2), so that effective limiting and fixing effects are achieved; the sealing joint (3-4) is tightly attached to the bolt hole of the embedded threaded rod (3-1) and used for connecting the recoverable bolt joint (3-3), and plays roles in stopping slurry and sealing connection.
6. The construction method of the split bolt with the radiation-proof concrete reserved labyrinth holes as claimed in any one of claims 1 to 5 is characterized by comprising the following steps:
(1) adopting anti-radiation concrete reserved labyrinth type hole split bolts and conventional pre-buried split bolts to enhance the formwork supporting effect of the underground anti-radiation concrete structure pouring; firstly binding a radiation-proof concrete structure reinforcing steel bar; fixing the embedded sleeve (1) provided with the first protective sleeve (1-1), the second protective sleeve (1-2), the steel bar connector (2), the embedded threaded rod (3-1), the sealing joint (3-4) and the water stop sheet (4) and a conventional embedded split bolt at a position determined by a formwork design;
(2) installing templates (5) on two sides of a to-be-poured anti-radiation concrete structure, and tightly jacking the templates (5) on the two sides with a first protective sleeve (1-1) and a second protective sleeve (1-2) at two ends of an embedded sleeve (1) and a sealing joint (3-4) at the end of an embedded threaded rod (3-1);
(3) a recyclable threaded rod (3-2) penetrates through the transverse ridge (7), the vertical ridge (6), the template (5) and the first protective sleeve (1-1), is fixedly connected with the steel bar connector (2), and is screwed and fixed through the fastener (3-5) and the nut (3-6);
(4) the recyclable bolt joint (3-3) penetrates through the transverse edge (7), the vertical edge (6) and the template (5), is tightly connected with the embedded threaded rod (3-1) through the sealing joint (3-4), and is screwed and fixed through the fastener (3-5) and the nut (3-6);
(5) repeating the steps (3) and (4) to complete the installation of the split bolts of the radiation-proof concrete reserved labyrinth holes; completing the installation of the conventional pre-buried split bolt;
(6) pouring radiation-proof concrete; after the strength of the radiation-proof concrete reaches the standard requirement, the nuts (3-6), the fasteners (3-5), the recyclable threaded rods (3-2) and the recyclable bolt joints (3-3) are sequentially dismounted; removing conventional pre-buried split bolts; dismantling the transverse ribs (7), the vertical ribs (6) and the templates (5);
(7) floating ash in bolt holes of the embedded threaded rods (3-1) and holes of the sealing joints (3-4) is cleaned, and the first protective sleeve (1-1) and the second protective sleeve (1-2) are removed; blocking the bolt holes of the embedded threaded rods (3-1) and the holes of the sealing joints (3-4) by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and spraying a radiation-proof coating after blocking;
(8) after the construction related to the holes such as the threading in the embedded sleeve (1) is completed, the embedded sleeve is sealed and filled with the anti-radiation material with increased density, and anti-radiation coatings are sprayed at two ends of the embedded sleeve (1) after the embedded sleeve is sealed and filled.
7. The construction method of the radiation-proof concrete split bolt with the reserved labyrinth holes, according to claim 6, is characterized in that: in the step (1), the embedded sleeve (1) and the conventional embedded split bolt can be bound and installed on the structural steel bar through a fastener or a steel wire for temporary fixation; in the step (2), the first protective sleeve (1-1) and the second protective sleeve (1-2) can be coated with a release agent before installation, so that later-stage disassembly is facilitated.
8. The construction method of the radiation-proof concrete split bolt with the reserved labyrinth holes, according to claim 6, is characterized in that: and (5) keeping the installed split bolts with the reserved labyrinth holes of the radiation-proof concrete and the conventional embedded split bolts horizontal.
9. The construction method of the radiation-proof concrete split bolt with the reserved labyrinth holes, according to claim 6, is characterized in that: in the step (6), the removed recyclable threaded rod (3-2), recyclable bolt joints (3-3), fasteners (3-5), nuts (3-6), the template (5), the vertical ribs (6) and the transverse ribs (7) can be recycled.
10. The construction method of the radiation-proof concrete split bolt with the reserved labyrinth holes, according to claim 6, is characterized in that: in the steps (7) and (8), the radiation-proof mortar, the radiation-proof coating and the radiation-proof material for sealing and filling are mixed with materials which have high density and certain radiation absorption capacity.
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