阅读说明：本技术 一种过水箱涵混凝土预制件、连接件及其连接方法 (Water passing box culvert concrete prefabricated member, connecting member and connecting method thereof ) 是由 张可心 陈向东 王强林 韩翔宇 宋魏鑫 李建彬 周江涛 梁才 段凯元 于 2021-06-17 设计创作，主要内容包括：本发明公开了一种过水箱涵混凝土预制件形态、连接件及其连接方法,包括：钢筋混凝土预制件的主体结构,主体结构设置“U”型灌浆槽、连接预留孔,安装止水材料半圆形安装槽,用于连接的套管与螺纹钢筋连接件。本发明所要解决的技术问题是提供一种安装便捷的过水箱涵混凝土预制件形态、连接件及其连接方法,科学合理且易于操作,适用于市政的水处理工程或水利工程。(The invention discloses a water passing box culvert concrete prefabricated part shape, a connecting piece and a connecting method thereof, wherein the connecting method comprises the following steps: the main structure of the reinforced concrete prefabricated part is provided with a U-shaped grouting groove, a connection preformed hole, a water stop material semicircular installation groove and a sleeve and a threaded steel bar connecting piece for connection. The invention aims to solve the technical problem of providing a water box culvert concrete prefabricated part form, a connecting piece and a connecting method thereof, which are convenient to install, scientific, reasonable, easy to operate and suitable for municipal water treatment engineering or hydraulic engineering.)

1. The utility model provides a cross water box culvert concrete prefabricated part which characterized in that: the prefabricated part comprises a prefabricated part main body with a front surface and a rear surface as connecting surfaces, wherein a top transverse groove, a bottom transverse groove and a side vertical groove which are reserved for grouting are arranged on the connecting surface of the prefabricated part main body, and the side vertical groove and the bottom transverse groove are U-shaped grouting grooves after being spliced; the connection face of prefab main part is provided with the preformed hole, the side of prefab main part is provided with the symmetry buried bolt in advance of hoist and mount usefulness.

2. The water box culvert concrete precast member of claim 1, characterized in that: the preformed hole is arranged in grouting grooves on four sides of the prefabricated part main body.

3. The water box culvert concrete precast member of claim 1, characterized in that: the connecting surface of the prefabricated part main body is also provided with an inner four-edge sealing installation groove and an outer three-edge sealing installation groove which are used for installing water stopping materials, the inner four-edge sealing installation groove is located in the range of the outer three-edge sealing installation groove, and the cross sections of the inner walls of the inner four-edge sealing installation groove and the inner four-edge sealing installation groove are semicircular.

4. The utility model provides a connecting piece for connecting water box culvert concrete prefabricated part which characterized in that: the steel bar reinforcing structure comprises a threaded sleeve, a steel bar standard part and an end threaded steel bar, wherein the end threaded steel bar is formed by cutting a certain length according to the steel bar standard part;

a metal cap is arranged at the left end of the threaded sleeve, and two reserved grouting holes are formed in the metal cap; the left end of the threaded sleeve can be in threaded connection with a steel bar standard part or an end threaded steel bar, and the right end of the threaded sleeve is provided with a longitudinal through hole;

semi-through holes are reserved at one ends of the steel bar standard part and the end threaded steel bar, and the semi-through holes and the longitudinal through holes can be fixed through screws; the other ends of the steel bar standard part and the end threaded steel bar can be screwed into one end of the threaded sleeve with the metal cap.

5. The connecting piece for connecting the water box culvert concrete precast member according to claim 4, wherein: screwing one end of the opening of the threaded steel bar at the end of the thread with one end of the opening of the threaded sleeve, and fixing the threaded steel bar at the end of the thread with the longitudinal through hole of the threaded sleeve by a screw after the half through hole of the threaded steel bar at the end is matched with the longitudinal through hole of the threaded sleeve to form a first type connecting piece;

and (3) screwing one end of the steel bar standard part open pore with one end of the threaded sleeve open pore, and fixing through screws after the preformed hole on the steel bar standard part is matched with the preformed hole on the threaded sleeve to form a second type connecting piece.

6. A connecting method of a water box culvert concrete prefabricated member comprises the following steps:

s1: mounting water-stopping materials in the inner four-edge closed mounting groove and the outer three-edge closed mounting groove of the prefabricated box culvert, and hoisting the first prefabricated box culvert to a specified position;

s2: placing a concrete cushion block in a prepared hole at the left end of the first prefabricated box culvert, and inserting a threaded sleeve; inserting a first type connecting piece into the preformed hole at the right end, and fixedly connecting the first type connecting piece with the threaded sleeves, so that the threaded sleeves at the two ends of the first prefabricated box culvert are metal caps on the outer sides;

s3: hoisting and suspending a second prefabricated box culvert to a specified position, butting the second prefabricated box culvert with the first prefabricated box culvert, and placing the second prefabricated box culvert at the right end of the first prefabricated box culvert;

s4: inserting a second type connecting piece into a preformed hole at the right end of a second prefabricated box culvert, placing a concrete cushion block in the preformed hole at the left end, and fixedly connecting a steel bar standard piece of the second type connecting piece with a connecting piece A so that a metal cap of a threaded sleeve of the second type connecting piece is arranged on the outer side;

s5: starting to install towards two sides from the middle position of the first prefabricated box culvert, and repeating the steps S3-S4 until the box culvert is connected;

s6: pouring concrete into a U-shaped grouting groove formed by a bottom groove and a side groove of the box culvert until a top groove is filled, and performing external waterproof treatment after the concrete is condensed;

s7: and plugging the sunken parts of the symmetrical embedded bolts for hoisting the box culvert by using concrete.

7. The connecting method of the water box culvert concrete precast member according to claim 6, characterized in that: and in the steps of S2 and S4, when the connecting piece and the threaded sleeve are screwed, the connecting piece and the threaded sleeve are screwed and fixed through a mounting tool, the mounting tool comprises a clamp, a connecting rod and a handle which are sequentially connected, and when the connecting piece and the threaded sleeve are used, the clamp is clamped in a reserved grouting hole in a metal cap, so that the steel bar standard piece or the threaded steel bar at the end is screwed into the threaded sleeve.

8. The connecting method of the water box culvert concrete precast member according to claim 6, characterized in that: in the steps S2 and S4, two reserved grouting holes in the metal cap are used for enabling an installation tool to carry out the screwing of the steel bar standard part and the threaded sleeve in the early stage or the end threaded steel bar and the threaded sleeve, and grouting and exhausting can be carried out in the reserved grouting holes through the reserved grouting holes in the later stage.

Technical Field

The invention relates to a hydraulic engineering and municipal engineering device, in particular to a water box culvert concrete prefabricated part, a connecting piece and a connecting method thereof.

Background

The box culvert refers to a culvert built by box-shaped pipe joints made of reinforced concrete, and in municipal water treatment engineering or partial hydraulic engineering, the structure is often used for connecting rivers and oceans near a plant area to take water and drain water. The traditional box culvert construction is carried out on site by binding steel bars, erecting a formwork and pouring concrete, the construction period is long, and the construction in areas such as seasides and the like with great influence on rainy seasons, tides and the like is particularly not facilitated. The box culvert is prefabricated and processed in a factory and assembled on site, the process has the advantages of low labor intensity of workers, high installation efficiency, short required construction period and the like, and the box culvert is widely applied to the fields of railways, roads and the like at present.

Several connection methods are currently used for prefabricated parts: one is that the length of the steel bar at the joint exceeds the length of the prefabricated member, and the steel bar is fixedly connected through manual binding and concrete pouring on site, but the operation is complicated and the efficiency is low; one method is that steel plates are arranged at the joints of prefabricated parts and are connected by welding, but the efficiency of welding the steel plates is low and the product quality is difficult to ensure; one kind sets up the interface for concrete structure, and this kind of mode structure is comparatively complicated, and is higher to the hoist and mount operation requirement, and is comparatively easy to damage.

Disclosure of Invention

The invention provides a water passing box culvert concrete prefabricated part, a connecting piece and a connecting method thereof, which are convenient to install, are used for solving the problem of inconvenient construction of box culverts and prefabricated parts, and have the following technical scheme:

a water-passing box culvert concrete prefabricated part comprises a prefabricated part main body, wherein the front surface and the rear surface of the prefabricated part main body are used as connecting surfaces, a top transverse groove, a bottom transverse groove and a side vertical groove which are reserved for grouting are arranged on the connecting surfaces of the prefabricated part main body, and the side vertical groove and the bottom transverse groove are U-shaped grouting grooves after being spliced; the connection face of prefab main part is provided with the preformed hole, the side of prefab main part is provided with the symmetry buried bolt in advance of hoist and mount usefulness.

The preformed hole is arranged in grouting grooves on four sides of the prefabricated part main body.

The connecting surface of the prefabricated part main body is also provided with an inner four-edge sealing installation groove and an outer three-edge sealing installation groove which are used for installing water stopping materials, the inner four-edge sealing installation groove is located in the range of the outer three-edge sealing installation groove, and the cross sections of the inner walls of the inner four-edge sealing installation groove and the inner four-edge sealing installation groove are semicircular.

A connecting piece for connecting a water box culvert concrete prefabricated part comprises a threaded sleeve, a steel bar standard part and an end threaded steel bar, wherein the end threaded steel bar is formed by cutting a certain length according to the steel bar standard part;

a metal cap is arranged at the left end of the threaded sleeve, and two reserved grouting holes are formed in the metal cap; the left end of the threaded sleeve can be in threaded connection with a steel bar standard part or an end threaded steel bar, and the right end of the threaded sleeve is provided with a longitudinal through hole;

semi-through holes are reserved at one ends of the steel bar standard part and the end threaded steel bar, and the semi-through holes and the longitudinal through holes can be fixed through screws; the other ends of the steel bar standard part and the end threaded steel bar can be screwed into one end of the threaded sleeve with the metal cap.

Screwing one end of the opening of the end socket threaded steel bar with one end of the opening of the threaded sleeve, and fixing the end socket threaded steel bar through a screw after a half through hole on the end socket threaded steel bar is matched with a longitudinal through hole on the threaded sleeve to form a first type connecting piece;

and (3) screwing one end of the steel bar standard part open pore with one end of the threaded sleeve open pore, and fixing through screws after the preformed hole on the steel bar standard part is matched with the preformed hole on the threaded sleeve to form a second type connecting piece.

A connecting method of a water box culvert concrete prefabricated member comprises the following steps:

s1: mounting water-stopping materials in the inner four-edge closed mounting groove and the outer three-edge closed mounting groove of the prefabricated box culvert, and hoisting the first prefabricated box culvert to a specified position;

s2: placing a concrete cushion block in a prepared hole at the left end of the first prefabricated box culvert, and inserting a threaded sleeve; inserting a first type connecting piece into the preformed hole at the right end, and fixedly connecting the first type connecting piece with the threaded sleeves, so that the threaded sleeves at the two ends of the first prefabricated box culvert are metal caps on the outer sides;

s3: hoisting and suspending a second prefabricated box culvert to a specified position, butting the second prefabricated box culvert with the first prefabricated box culvert, and placing the second prefabricated box culvert at the right end of the first prefabricated box culvert;

s4: inserting a second type connecting piece into a preformed hole at the right end of a second prefabricated box culvert, placing a concrete cushion block in the preformed hole at the left end, and fixedly connecting a steel bar standard piece of the second type connecting piece with a connecting piece A so that a metal cap of a threaded sleeve of the second type connecting piece is arranged on the outer side;

s5: starting to install towards two sides from the middle position of the first prefabricated box culvert, and repeating the steps S3-S4 until the box culvert is connected;

s6: pouring concrete into a U-shaped grouting groove formed by a bottom groove and a side groove of the box culvert until a top groove is filled, and performing external waterproof treatment after the concrete is condensed;

s7: and plugging the sunken parts of the symmetrical embedded bolts for hoisting the box culvert by using concrete.

Further, in the steps S2 and S4, when the connecting member and the threaded sleeve are screwed, the connecting member and the threaded sleeve are screwed and fixed by an installation tool, the installation tool comprises a clamp, a connecting rod and a handle which are connected in sequence, and when the connecting member and the threaded sleeve are used, the clamp is clamped in the reserved grouting hole on the metal cap, so that the steel bar standard member or the threaded steel bar at the end is screwed into the threaded sleeve.

Further, in the steps S2 and S4, two reserved grouting holes on the metal cap are used for the installation tool to perform screwing of the steel bar standard part and the threaded sleeve in the early stage, or the end threaded steel bar and the threaded sleeve, and grouting and exhausting can be performed in the reserved grouting holes through the reserved grouting holes in the later stage.

The invention is suitable for the water passing box culvert assembled by prefabricated parts, and the water passing box culvert is simpler and more efficient, and has the advantages that: (1) the prefabricated members are simple to connect, complex operation and complex installation tools are not needed, construction is convenient, and the prefabricated members have higher practicability; (2) the construction efficiency is high, and the time and the labor cost are saved; (3) the sealing and waterproof performance of the joint is considered, and the durability of the joint is improved; (4) under certain conditions, the tightness degree between the connecting pieces can be adjusted, and the connecting pieces can be used as prestressed components.

Drawings

FIG. 1 is a perspective view of a precast concrete box culvert;

FIG. 2A is a front view of a precast concrete box culvert;

FIG. 2B is a side view of the precast concrete box culvert;

FIG. 2C is a top view of the precast concrete box culvert;

FIG. 3 is a comprehensive schematic view of a connecting member;

figure 4 is a schematic view of the box culvert components after the completion of the connections.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2C, a cross water box culvert concrete prefabricated member, precast concrete box culvert promptly, including prefab main part 1, two sides are as connecting the face around prefab main part 1, are provided with the top transverse groove 4, the bottom transverse groove 3 and the side that reserve the grout and use on connecting the face and erect groove 2, and top transverse groove 4 is located the top of prefab main part 1, and bottom transverse groove 3 is located the below of prefab main part 1, and side erects groove 2 and is located the left and right sides of prefab main part 1. The side vertical grooves 2 and the bottom transverse grooves 3 are U-shaped grouting grooves after being spliced, and the top transverse grooves 4 are in an open form, so that concrete is conveniently poured.

Preformed unit main part 1 is last still to be provided with preformed hole 5 for connect the connecting piece, preformed hole 5 is arranged in the grout groove of 1 four sides of preformed unit main part, can connect soon with the sleeve at the reinforcing bar of connecting piece after grout, plays the protection reinforcing bar, increases holistic effect.

The connecting face of prefabricated part main part 1 still is provided with interior four sides enclosed mounting groove 6 and outer trilateral enclosed mounting groove 7, interior four sides enclosed mounting groove 6 is located outer trilateral enclosed mounting groove 7 within range, and the cross-section of both inner walls is semi-circular, interior four sides enclosed mounting groove 6 is used for installing stagnant water material with outer trilateral enclosed mounting groove 7, and different materials such as rubber can be selected according to different demands to stagnant water material.

The side of prefab main part 1 is provided with the symmetry buried bolt 8 of hoist and mount usefulness, symmetry buried bolt 8 is sunken form, can be after the installation accomplish with the concrete shutoff, protection inner structure.

As shown in fig. 3, a connecting member for connecting the above-mentioned water passing box culvert concrete precast member includes:

(1) the threaded sleeve 9 is used for penetrating into the preformed hole 5 in the prefabricated part body 1, and a longitudinal through hole 13 for fixing the position of a steel bar 16 is formed in the sleeve 9;

the metal cap 11 is rigidly connected with the sleeve 9 into a whole, and two reserved grouting holes 12 are formed in the metal cap 11;

(2) and a processed steel bar standard part 10 with threads or an end threaded steel bar 16 with a certain length cut according to the threaded steel bar standard part is also arranged, the steel bar standard part 10 and the end threaded steel bar 16 can be in bolt-nut connection with the sleeve 9, semi-through holes 15 fixed with the sleeve 9 are reserved on the steel bar standard part 10 and the end threaded steel bar 16, and the semi-through holes 15 and the longitudinal through holes 13 are fixed through screws 14.

In addition, for making things convenient for above-mentioned reinforcing bar standard component 10 or reinforcing bar 16 to connect with sleeve 9 soon, the design has mounting tool 17, mounting tool 17 includes anchor clamps, connecting rod and the handle that links to each other in proper order, during the use, blocks anchor clamps reservation grout hole 12, makes reinforcing bar standard component 10 or end screw reinforcement 16 screw in sleeve 9.

When the connecting piece is installed, two ends of a threaded sleeve 9 of the connecting piece are opened, both ends can be connected with reinforcing steel bars 16 for screwing, a metal cap 11 is fixed on the body of the sleeve 9, and the distance between the metal cap 11 and one end of the sleeve 9 is fixed according to different requirements; a longitudinal through hole 13 is reserved on the sleeve 9 and used for fixing the position of a steel bar during installation; have two reservation grout holes 12 on the metal cap 11, supply mounting tool 17 to carry out the connecing soon of reinforcing bar 16 and sleeve 9 earlier stage, later stage accessible it is grout and the exhaust in to reservation hole 5.

The steel bar is threaded to manufacture the steel bar standard component 10, or a certain length of end threaded steel bar 16 can be cut according to the construction condition, the end threaded steel bar is connected with the sleeve 9 through bolts and nuts, and the screw 14 screwed to a certain position penetrates through the half through hole 15 and the longitudinal through hole 13 to be fixed.

As shown in fig. 4, in the connecting method of the concrete prefabricated members of the water passing box culvert, a concrete cushion block is placed at the left end of a preformed hole of a first prefabricated box culvert and inserted with a threaded sleeve, the right end of the preformed hole is inserted with a connecting piece A connected with the threaded sleeve, and the two ends of the connecting piece A can be connected with other prefabricated box culverts through connecting pieces, and at the moment, the threaded sleeves at the two ends of the first prefabricated box culvert are both ends provided with metal caps; then other water passing box culverts can be fixedly connected with the first prefabricated box culvert through the connecting piece B, further, the threaded steel bar of the connecting piece B is fixedly connected with the connecting piece A of the first prefabricated box culvert, and the threaded sleeve of the connecting piece B is also arranged on the outer side and can be connected with the next prefabricated box culvert; therefore, the box culvert is installed towards two sides from the middle position of the first box culvert until the box culvert is connected.

Which comprises the following steps:

s1: placing a first prefabricated box culvert: prefabricating a box culvert by a prefabrication factory according to regulations and requirements, installing water stop materials in an inner four-edge closed installation groove 6 and an outer three-edge closed installation groove 7, and hoisting a first prefabricated box culvert 1a to a specified position;

s2: placing a first concrete cushion block 18a in a prepared hole at the left end of the first prefabricated box culvert 1a and inserting a third threaded sleeve 9c, wherein a metal cap of the third threaded sleeve 9c is arranged on the outer side (the outer side at the left side); a connecting piece A is inserted into a preformed hole at the right end of the first prefabricated box culvert 1a, and a metal cap 11 of a first concrete cushion block 18a of a first threaded sleeve 9a in the connecting piece A is arranged on the outer side (the outer side on the right side); the connecting piece A is fixedly connected with the third threaded sleeve 9c, and the method comprises the following steps:

s21: the connecting piece A comprises a first threaded sleeve 9a and a first threaded steel bar 16a, one end of the opening of the first threaded steel bar 16a is screwed with one end of the opening of the first threaded sleeve 9a, and after a half through hole on the first threaded steel bar 16a is matched with a longitudinal through hole on the first threaded sleeve 9a, the half through hole is fixed through a first screw 14a to form the connecting piece A;

s22: placing a first concrete cushion block 18a in a prepared hole 5 at the left end of the first prefabricated box culvert 1a, inserting a third threaded sleeve 9c from the first concrete cushion block 18a, screwing the third threaded sleeve with the other end of a first threaded steel bar 16a of the connecting piece A formed in the step S21, and screwing and fixing the third threaded sleeve with an installation tool 17;

s23: grouting is carried out in the reserved hole 5 through a reserved grouting hole 12 of a metal cap 11 at one end of the third threaded sleeve 9 c.

S3: hoisting and suspending the next prefabricated box culvert 1b to a specified position to be butted with the previous prefabricated box culvert 1a, and placing the second prefabricated box culvert 1b at the right end of the first prefabricated box culvert 1 a;

s4: inserting a connecting piece B into a preformed hole at the right end of a second prefabricated box culvert 1B, placing a second concrete cushion block 18B in the preformed hole at the left end, and fixedly connecting a steel bar standard part 10 of the connecting piece B with the connecting piece A, wherein the method comprises the following steps:

s41: screwing one end of the opening 10 of the steel bar standard component with one end of the opening of the second threaded sleeve 9B, and fixing the steel bar standard component through a second screw 14B after the preformed hole on the opening 10 of the steel bar standard component is matched with the preformed hole on the sleeve to form a connecting piece B;

s42: placing a second concrete cushion block 18B in the reserved hole 5 on the left side of the second prefabricated box culvert 1B, inserting a connecting piece B formed by S51 into the reserved hole 5 on the right side, enabling a metal cap of a second threaded sleeve 9B to be on the outer side (the outer side on the right side), enabling a steel bar standard part opening 10 to penetrate through the second concrete cushion block 18B, then enabling the other end of the steel bar standard part opening 10 to be in screwed connection with a first threaded sleeve 9a on the upper right side of the first prefabricated box culvert 1a, and screwing and fixing the steel bar standard part opening 10 and the first threaded sleeve 9a on the right side of the first prefabricated box culvert 1a through a mounting tool 17;

s43: the crane unloads power, places this second prefabricated box culvert 1b, and the reservation grout hole 12 of the metal cap 11 through second threaded sleeve 9b is in milk to the connecting hole in, to the grout of reservation hole 5 of second prefabricated box culvert 1b right-hand member.

S5: in this way, the first prefabricated box culvert 1a is installed towards both sides starting from the middle position, and the steps S3-S4 are repeated until the box culvert connection is finished.

S6: concrete is poured into a U-shaped grouting groove formed by the bottom groove 3 and the side grooves 2 of the box culvert until the top groove 4 is filled.

S7: the sunken part of the bolt 8 for hoisting the box culvert and the exposed part of the sleeve are blocked by concrete.

The above is only one of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that modifications and adaptations may be made in accordance with the actual engineering requirements without departing from the principles of the invention and are intended to be within the scope of the invention.