阅读说明：本技术 防辐射混凝土孔洞预留型对拉螺栓的施工方法 (Construction method of radiation-proof concrete hole reserved split bolt ) 是由 王志强 王晓峰 尹华松 武微 孟俊义 连亮亮 程秀茹 姚志鹏 高文奎 赵源 张泽 于 2021-07-16 设计创作，主要内容包括：本发明涉及防辐射混凝土孔洞预留型对拉螺栓的施工方法,包括步骤：1)安装孔洞预留套管；2)安装倾斜可回收对拉螺栓；3)安装倾斜对拉螺栓；4)固定倾斜可回收对拉螺栓和倾斜对拉螺栓主体；5)浇筑混凝土,拆除相关构件；6)封堵倾斜对拉螺栓主体；7)封堵孔洞预留套管。本发明的有益效果是：本发明中孔洞预留套管倾斜设置,内侧喷涂具备减少辐射射线反射、吸收一定辐射射线功能的防辐射涂层,并在孔洞预留套管内管道或线路施工完成后,采用掺有微膨胀剂和防水剂的防辐射砂浆封堵,封堵口表面喷涂防辐射涂层,采取全面的措施消除防辐射混凝土孔洞预留型对拉螺栓的孔洞预留套管处的辐射泄露风险。(The invention relates to a construction method of a radiation-proof concrete hole reserved split bolt, which comprises the following steps: 1) installing a hole reserved sleeve; 2) installing an inclined recoverable split bolt; 3) installing an inclined split bolt; 4) the fixed inclined recoverable split bolt and the inclined split bolt main body; 5) pouring concrete, and dismantling related components; 6) plugging the inclined split bolt main body; 7) and (5) plugging the holes to reserve sleeves. The invention has the beneficial effects that: according to the invention, the hole reserved sleeve is obliquely arranged, the radiation-proof coating with the functions of reducing radiation ray reflection and absorbing certain radiation rays is sprayed on the inner side of the hole reserved sleeve, and after the pipeline or line construction in the hole reserved sleeve is finished, the radiation-proof mortar mixed with a micro-expanding agent and a waterproof agent is adopted for blocking, the radiation-proof coating is sprayed on the surface of a blocking port, and comprehensive measures are taken to eliminate the radiation leakage risk at the hole reserved sleeve of the radiation-proof concrete hole reserved split bolt.)

1. A construction method of a radiation-proof concrete hole reserved split bolt is characterized by comprising the following steps:

1) when an underground radiation-proof concrete structure is poured, adopting a radiation-proof concrete hole reserved split bolt; binding concrete structure steel bars, installing a template (6) on one side of the concrete structure to be poured, and installing a hole reserved sleeve (1);

2) enabling the inclined recoverable split bolt (2) to penetrate through the hole reserved sleeve (1), the installed template (6) and the support edge (7), and fixing one end of the inclined recoverable split bolt (2) through the wedge-shaped fastener (4) and the nut (5);

3) one end of the main body (3-1) of the inclined split bolt is fixed on a mounted template (6) and a support edge (7) through a sealing ring (3-3), a recoverable bolt joint (3-4), a wedge-shaped fastener (4) and a nut (5);

4) installing a template (6) on the other side of the concrete structure to be poured, repeating the fixing method of the inclined recoverable split bolt (2) in the step 2) and the fixing method of the inclined split bolt main body (3-1) in the step 3), fixedly installing the inclined recoverable split bolt (2) and the other end of the inclined split bolt main body (3-1) on the template (6) and a supporting edge (7) on the other side of the concrete structure to be poured, and tightening the inclined recoverable split bolt and the other end of the inclined split bolt main body;

5) pouring concrete (8); after the strength of the concrete reaches the standard requirement, removing a wedge-shaped fastener (4) and a nut (5) for fixing the inclined recoverable split bolt (2), and pulling out the inclined recoverable split bolt (2) in the hole reserved sleeve (1); dismantling a recoverable bolt joint (3-4), a wedge-shaped fastener (4) and a nut (5) for fixing the inclined split bolt main body (3-1); removing the template (6);

6) cleaning floating ash and construction waste in bolt holes at two ends of the hole reserved sleeve (1) and the inclined split bolt main body (3-1); the bolt holes at two ends of the inclined split bolt main body (3-1) are plugged by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and a radiation-proof coating is sprayed on the surfaces of the plugged bolt holes and the sealing ring (3-3);

7) after the construction of the pipeline or the line in the hole reserved sleeve (1) is finished, adopting the radiation-proof mortar mixed with the micro-expanding agent and the waterproof agent to plug, and spraying the radiation-proof coating on the surfaces of the plugging openings at the two ends of the hole reserved sleeve (1).

2. The construction method of the radiation-proof concrete hole reserved split bolt according to claim 1, characterized in that: in the step 1), temporary rubber plugs are arranged at two ends of the hole reserved sleeve (1) for protection; the hole reserved sleeve (1) is fixed on a main reinforcement of a concrete structure to be poured in a fastener or steel wire binding mode.

3. The construction method of the radiation-proof concrete hole reserved split bolt according to claim 1, characterized in that: in the step 2), when the inclined recoverable split bolt (2) is installed, removing the temporary rubber plug of the hole reserved sleeve (1); the gap between the inclined recoverable split bolt (2) and the sleeve main body (1-1) is temporarily fixed in a rubber gasket filling mode.

4. The construction method of the radiation-proof concrete hole reserved split bolt according to claim 1, characterized in that: in the step 3), the main body (3-1) of the inclined split bolt is fixed on a main reinforcement of a steel bar of a concrete structure in a fastener or steel wire binding mode; the sealing ring (3-3) exceeds the inclined split bolt main body (3-1) and the part of the recoverable bolt joint (3-4) and is tightly attached to the template (6) and the concrete (8).

5. The construction method of the radiation-proof concrete hole reserved split bolt according to claim 1, characterized in that: in the steps 6) and 7), the radiation-proof mortar is doped with a material with certain radiation absorption capacity.

Technical Field

The invention relates to the technical field of radiation-proof concrete formworks, in particular to a construction method of a radiation-proof concrete hole reserved split bolt.

Background

With the development of society, irradiation technology is widely applied in the industries of medical treatment, food, medicine radiation sterilization and the like. The radiation-proof concrete structure is not easy to be penetrated by radioactive rays, has shielding capability on gamma rays, X rays or neutron radiation, and is a main radiation shielding structure. At present, the material is widely used in atomic energy reactors, particle accelerators and radiation sterilization industries of medical treatment, food, medicine and the like, and is an important barrier for ensuring the safety of operators and the surrounding environment.

The concrete template is a weak link of the whole concrete radiation-proof structure system at the positions of the split bolt, the wall bushing, the structure preformed hole and the like. According to the characteristic that radiation rays propagate along a straight line, in order to eliminate the weakening influence of weak links on the whole radiation-proof structure, the weak links are required not to be directly penetrated. For the split bolt, a threaded rod split bolt is usually adopted and left in the concrete structure to prevent radiation leakage; specific treatment measures are taken for wall bushing and structure preformed holes, and labyrinth arrangement is carried out on the wall bushing and the structure preformed holes to prevent radiation leakage. In fact, the split bolt, the wall bushing and the structure preformed hole are separately treated, the number of weak parts in the concrete structure is not reduced, and the hidden danger of radiation leakage still exists.

Therefore, for reducing and eliminating the weakening risk of the concrete template split bolt, the wall bushing and the structure reserved hole to the whole radiation protection structure, the radiation protection structure is enabled to be safer and more reliable, and an effective radiation protection concrete hole reserved type split bolt is urgently needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a construction method of a radiation-proof concrete hole reserved split bolt.

The radiation-proof concrete hole reserved split bolt comprises a hole reserved sleeve, an inclined recoverable split bolt, an inclined split bolt, a wedge-shaped fastener and a nut;

the hole reserved sleeve consists of a sleeve main body and a first water stop sheet; the first water stop sheets are arranged at the two ends and the middle of the sleeve main body at equal intervals;

the outer diameter of the inclined recoverable split bolt is smaller than the inner diameter of the sleeve main body, the inclined recoverable split bolt penetrates through the hole reserved sleeve, the templates on two sides of the concrete structure to be poured and the supporting ridges on the outer sides of the templates, and two ends of the inclined recoverable split bolt are fixed in a split mode through wedge-shaped fasteners and nuts;

the inclined split bolts are arranged on two sides of the hole reserved sleeve at equal intervals and symmetrically arranged along a horizontal line which penetrates through the center of the hole reserved sleeve along the section of the concrete structure; the inclined split bolt consists of an inclined split bolt main body, a second water stop sheet, a sealing ring and a recoverable bolt joint; the second water stop sheets are arranged at the two ends and the middle of the inclined split bolt main body at equal intervals; the sealing rings are installed at two ends of the inclined split bolt main body, the inclined split bolt penetrates through the templates on two sides of the concrete structure to be poured and the supporting ribs on the outer sides of the templates, and two ends of the inclined split bolt main body are fixed in a split mode through the recoverable bolt joint, the wedge-shaped fastener and the nuts.

Preferably, the method comprises the following steps: and the radiation-proof coating is sprayed on the inner side of the hole reserved sleeve.

Preferably, the method comprises the following steps: the wedge-shaped fastener is positioned between the supporting edge and the nut; the section of the wedge-shaped fastener is a right-angled triangle; the inclined surface of the wedge-shaped fastener is perpendicular to the inclined recoverable split bolt or the inclined split bolt.

Preferably, the method comprises the following steps: the gap between the inclined recoverable split bolt and the sleeve main body is filled by a rubber gasket.

Preferably, the method comprises the following steps: the bolt holes at the two ends of the inclined split bolt main body are connected with the recoverable bolt joint in a matching way; the part of the sealing ring, which exceeds the inclined split bolt main body and the recoverable bolt joint, is tightly attached to the template and the concrete.

The construction method of the radiation-proof concrete hole reserved split bolt comprises the following steps:

1) when an underground radiation-proof concrete structure is poured, adopting a radiation-proof concrete hole reserved split bolt; binding concrete structure steel bars, installing a template on one side of a concrete structure to be poured, and installing hole reserved sleeves;

2) the inclined recoverable split bolt penetrates through the hole reserved sleeve, the installed template and the support edge, and one end of the inclined recoverable split bolt is fixed through a wedge-shaped fastener and a nut;

3) fixing one end of the main body of the inclined split bolt on the installed template and the support edge through a sealing ring, a recoverable bolt joint, a wedge-shaped fastener and a nut;

4) installing a template on the other side of the concrete structure to be poured, repeating the fixing method of the inclined recoverable split bolt in the step 2) and the fixing method of the inclined split bolt main body in the step 3), fixedly installing the inclined recoverable split bolt and the other end of the inclined split bolt main body on the template and a supporting edge on the other side of the concrete structure to be poured, and tightening the inclined split bolts;

5) pouring concrete; after the strength of the concrete reaches the standard requirement, removing a wedge-shaped fastener and a nut for fixing the inclined recoverable split bolt, and pulling out the inclined recoverable split bolt in the hole reserved sleeve; dismantling a recoverable bolt joint, a wedge-shaped fastener and a nut for fixing the inclined split bolt main body; removing the template;

6) cleaning floating ash and construction waste in the hole reserved sleeve and the bolt holes at the two ends of the inclined split bolt main body; adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent to plug bolt holes at two ends of the inclined split bolt main body, and spraying a radiation-proof coating on the surfaces of the plugged bolt holes and the sealing ring;

7) after the construction of pipelines or lines in the hole reserving sleeve is finished, the hole reserving sleeve is plugged by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and then, radiation-proof coatings are sprayed on the surfaces of plugging ports at two ends of the hole reserving sleeve.

Preferably, the method comprises the following steps: in the step 1), temporary rubber plugs are arranged at two ends of the hole reserved sleeve for protection; the hole reserved sleeve is fixed on a main reinforcement of a concrete structure to be poured in a fastener or steel wire binding mode.

Preferably, the method comprises the following steps: in the step 2), when the inclined recoverable split bolt is installed, removing the temporary rubber plug of the hole reserved sleeve; the gap between the inclined recoverable split bolt and the sleeve main body is temporarily fixed in a rubber gasket filling mode.

Preferably, the method comprises the following steps: in the step 3), the main body of the inclined split bolt is fixed on a main reinforcement of a steel bar of a concrete structure in a fastener or steel wire binding mode; the part of the sealing ring, which exceeds the inclined split bolt main body and the recoverable bolt joint, is tightly attached to the template and the concrete.

Preferably, the method comprises the following steps: in the steps 6) and 7), the radiation-proof mortar is doped with a material with certain radiation absorption capacity.

The invention has the beneficial effects that:

1. according to the radiation-proof concrete hole reserved split bolt structure, part of the wall bushing, the structure reserved hole and the concrete template split bolt hole are shared, the number of weak parts in the concrete structure is effectively reduced, radiation leakage hidden trouble points are reduced substantially, and the radiation-proof structure is safer and more reliable.

2. According to the invention, the hole reserved sleeve is obliquely arranged, the radiation-proof coating with the functions of reducing radiation ray reflection and absorbing certain radiation rays is sprayed on the inner side of the hole reserved sleeve, and after the pipeline or line construction in the hole reserved sleeve is finished, the radiation-proof mortar mixed with a micro-expanding agent and a waterproof agent is adopted for blocking, the radiation-proof coating is sprayed on the surface of a blocking port, and comprehensive measures are taken to eliminate the radiation leakage risk at the hole reserved sleeve of the radiation-proof concrete hole reserved split bolt.

3. According to the invention, the sealing rings are arranged at two ends of the inclined split bolt main body, and the sealing rings are tightly attached to the template in the installation process of the concrete structure formwork and the inclined split bolt, so that the inclined split bolt main body keeps the set inclined angle, rotation or displacement is prevented, and a better limiting effect is achieved.

4. The inclined split bolt is matched with the hole reserved sleeve and inclined and recyclable split bolt to work, so that reasonable stress and structural safety of the concrete structure template are guaranteed.

5. According to the invention, after bolt holes at two ends of the main body of the inclined split bolt are cleaned, the inclined split bolt is plugged by adopting the radiation-proof mortar doped with the micro-expanding agent and the waterproof agent, and the radiation-proof coating is sprayed on the surfaces of the plugged bolt holes and the sealing ring, so that the weakening influence of the inclined split bolt on the whole radiation-proof structure is eliminated.

6. The inclined recoverable split bolt, the recoverable bolt joint, the wedge-shaped fastener and the nut can be recycled, and the building concept of energy conservation, green and environmental protection is met.

Drawings

FIG. 1 is a schematic view of a radiation-proof concrete hole reserved split bolt structure;

FIG. 2 is a cross-sectional view of the bore reservation sleeve;

FIG. 3 is a cross-sectional view of an angled recoverable split bolt and wedge fastener and nut;

FIG. 4 is a cross-sectional view of the oblique split bolt body;

figure 5 is a cross-sectional view of a retrievable bolted joint and a wedge clamp and nut.

Description of reference numerals: the hole reserved sleeve comprises a hole reserved sleeve 1, a sleeve main body 1-1, a first water stop sheet 1-2, an inclined recoverable split bolt 2, an inclined split bolt 3, an inclined split bolt main body 3-1, a second water stop sheet 3-2, a sealing ring 3-3, a recoverable bolt joint 3-4, a wedge-shaped fastener 4, a nut 5, a template 6, a supporting ridge 7 and concrete 8.

Detailed Description

The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Example one

Radiation protection concrete hole reservation type split bolt is including hole reservation sleeve pipe 1, recoverable split bolt 2, the oblique split bolt 3, wedge-shaped fastener 4 and nut 5 of inclining of reserving.

The hole reserved sleeve 1 consists of a sleeve main body 1-1 and a first water stop sheet 1-2; the first water stop sheets 1-2 are arranged at the two ends and the middle of the sleeve main body 1-1 at equal intervals.

The outer diameter of the inclined recoverable split bolt 2 is smaller than the inner diameter of the casing main body 1-1, so that the inclined recoverable split bolt 2 can smoothly penetrate through the casing main body 1-1. The inclined recoverable split bolt 2 penetrates through the hole reserved sleeve 1, the templates 6 on two sides of the concrete structure to be poured and the supporting ridges 7 on the outer sides of the templates 6 and is fixed in a split mode through the wedge-shaped fastener 4 and the nut 5.

The inclined split bolts 3 are arranged on two sides of the hole reserved sleeve 1 at equal intervals and symmetrically arranged along a horizontal line passing through the center of the hole reserved sleeve 1 on the section of the concrete structure. The inclined split bolt 3 consists of an inclined split bolt main body 3-1, a second water stop sheet 3-2, a sealing ring 3-3 and a recoverable bolt joint 3-4; the second water stop sheets 3-2 are arranged at the two ends and the middle of the inclined split bolt main body 3-1 at equal intervals; the sealing rings 3-3 are arranged at two ends of the main body 3-1 of the inclined split bolt and play roles in stopping slurry and limiting. The inclined split bolts 3 penetrate through templates 6 and supporting ribs 7 on two sides of the concrete structure to be poured and are fixed in a split mode through recoverable bolt joints 3-4, wedge-shaped fasteners 4 and nuts 5.

The inclination angle of the hole reserved sleeve 1 can meet the requirements of the underground radiation-proof concrete structure on the stress of a pouring formwork, and the strength of the inclined recoverable split bolt 2, the inclined split bolt 3, the wedge-shaped fastener 4, the nut 5 and other split stress members.

The position of the hole reserved sleeve 1 is determined by the design position of a template split bolt, a wall bushing and a structure reserved hole reserved position; under the condition of meeting the design requirement, the hole reserved sleeve 1 covers the wall penetrating sleeve and the structure reserved hole as much as possible.

The inner side of the hole reserved sleeve 1 is sprayed with an anti-radiation coating; the radiation-proof coating has the functions of reducing the reflection of radiation rays and absorbing certain radiation rays.

When the arrangement mode that the recoverable split bolt 2 is inclined and a group of inclined split bolts 3 are not arranged at intervals or the inclined split bolts 3 are difficult to install, the inclined split bolts 3 can be replaced by horizontal split bolts; when the horizontal split bolt is adopted, the inclination angle of the hole reserved sleeve 1 is checked again.

The wedge-shaped fastener 4 is positioned between the supporting edge 7 and the nut 5; the section of the wedge-shaped fastener 4 is a right triangle; the inclined surface of the wedge fastener 4 is perpendicular to the inclined recoverable split bolt 2 or the inclined split bolt 3.

The gap between the inclined recoverable split bolt 2 and the sleeve main body 1-1 is filled by a rubber gasket.

Bolt holes at two ends of the inclined split bolt main body 3-1 are connected with a recoverable bolt joint 3-4 in a matching mode; the part of the sealing ring 3-3, which exceeds the inclined split bolt main body 3-1 and the recoverable bolt joint 3-4, is tightly attached to the template 6 and the concrete 8.

Example two

The construction method of the radiation-proof concrete hole reserved split bolt comprises the following steps:

1) when an underground radiation-proof concrete structure is poured, a radiation-proof concrete hole reserved split bolt is adopted. Binding concrete structure steel bars, and installing a side template, and then installing the hole reserved sleeve 1. Temporary rubber plugs are arranged at two ends of the hole reserved sleeve 1 for protection, so that construction waste is prevented from falling into the installation reserved sleeve 1; when the inclined recoverable split bolt 2 is installed, the temporary rubber plug is removed; the hole reserved sleeve 1 is fixed on a main reinforcement of a concrete structure to be poured in a fastener or steel wire binding mode.

2) An inclined recoverable split bolt 2 penetrates through the hole reserved sleeve 1 and the installed template and the supporting edge, and one end of the inclined recoverable split bolt is fixed through a wedge-shaped fastener 4 and a nut 5; the gap between the inclined recoverable split bolt 2 and the sleeve main body 1-1 is temporarily fixed in a rubber gasket filling mode.

3) One end of the main body 3-1 of the inclined split bolt is fixed on an installed template and a supporting edge through a sealing ring 3-3, a recoverable bolt joint 3-4, a wedge-shaped fastener 4 and a nut 5; the main body 3-1 of the inclined split bolt is fixed on a main reinforcement of a steel bar of a concrete structure in a fastener or steel wire binding mode; the part of the sealing ring 3-3, which exceeds the inclined split bolt main body 3-1 and the recoverable bolt joint 3-4, is tightly attached to the template 6 and the concrete 8.

4) And (3) installing the other side template, repeating the fixing method of the steps 2) and 3), fixedly installing the other ends of the inclined recoverable split bolt 2 and the inclined split bolt main body 3-1 on the other side template and the supporting edge, and tightening the opposite pull.

5) Pouring concrete 8; after the strength of the concrete reaches the standard requirement, removing a wedge-shaped fastener 4 and a nut 5 for fixing the inclined recoverable split bolt 2, and pulling out the inclined recoverable split bolt 2 in the hole reserved sleeve 1; dismantling a recoverable bolt joint 3-4, a wedge-shaped fastener 4 and a nut 5 for fixing the inclined split bolt main body 3-1; removing the template;

6) cleaning floating ash and construction waste in the bolt holes at two ends of the hole reserved sleeve 1 and the inclined split bolt main body 3-1; blocking bolt holes at two ends of the inclined split bolt main body 3-1 by adopting radiation-proof mortar doped with a micro-expanding agent and a waterproof agent, and spraying a radiation-proof coating on the surfaces of the blocked bolt holes and the sealing ring 3-3; wherein the radiation-proof mortar is mixed with a material with high density and certain radiation absorption capacity.

7) After the construction of the pipeline or the line in the hole reserving sleeve 1 is finished, the hole reserving sleeve 1 is plugged by adopting the radiation-proof mortar doped with the micro-expanding agent and the waterproof agent, and then, the surfaces of the plugging ports at the two ends of the hole reserving sleeve 1 are sprayed with the radiation-proof coating.