CN107700561B

CN107700561B - Composite assembly for foundation pile repair reinforcement and foundation pile repair and reinforcement system

Info

Publication number: CN107700561B
Application number: CN201710854708.7A
Authority: CN
Inventors: 魏从杰; 李键; 张芹; 姚珍
Original assignee: Zhangjiagang Yinghua Material Technology Co ltd
Current assignee: Zhangjiagang Yinghua Material Technology Co ltd
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2020-04-14
Anticipated expiration: 2037-09-20
Also published as: CN107700561A

Abstract

The invention relates to a composite assembly for foundation pile repair reinforcement, comprising: a sleeve; the grating is positioned in the sleeve and comprises a plurality of first grating strips along a first direction and a plurality of second grating strips along a second direction, the second direction is parallel to the axial direction of the sleeve, and the first direction is vertical to the second direction; and the plurality of limiters are fixed on the inner wall of the sleeve and used for limiting the movement of the grating in the second direction and enabling the grating to move along the first direction. In the composite component for repairing and reinforcing the foundation pile, the grating is positioned in the sleeve and is positioned by the limiting device, and the limiting device limits the movement of the grating, so that the sleeve and the grating are integrated. When repairing and reinforcing foundation piles, the grating and the sleeve do not need to be installed step by step, the composite component is directly coated on the foundation pile with the surface being cleaned, the process is simple, the operation difficulty is small, time and labor are saved, and the rapid assembly is realized. The invention also relates to a foundation pile repairing and reinforcing system.

Description

Composite assembly for foundation pile repair reinforcement and foundation pile repair and reinforcement system

Technical Field

The invention relates to the field of repair, reinforcement and protection of buildings, in particular to a composite assembly for foundation pile repair and reinforcement and a foundation pile repair and reinforcement system.

Background

The foundation piles of the building structure are easily damaged by corrosion, load, vibration and impact, and the local or overall use function of the building is influenced. Particularly, wading foundation piles in the environments of oceans and great rivers are impacted by strong water flow, corroded by chemical substances such as acid, alkali and salt, freeze thawing action, severe climate and mechanical damage, concrete is easy to crack and peel, aggregate loss and steel bar corrosion, the bearing capacity of pile foundations is reduced, and even the whole building structure collapses.

At present, the main methods for repairing, reinforcing and protecting foundation piles comprise adhering steel plates or composite materials, increasing the sectional area and the like. However, the technical method has the defects of complex construction process, long construction period, short maintenance time and the like. Particularly, in the repairing and reinforcing process of the wading foundation pile, drainage operation is needed, the construction cost is high, and the construction quality cannot be guaranteed.

In recent years, a device for reinforcing a foundation pile by using a composite fiber sleeve is developed domestically, and a utility model patent with the patent number of ZL201520440670.5 provides a device for repairing and reinforcing a hydraulic foundation pile by using a fiber grating as a stirrup material and combining an external sleeve. Compared with the traditional repairing and reinforcing technical method, the technical scheme is improved, but the grid and the sleeve are required to be installed step by step, the process is complex, the operation difficulty is high, and the time and the labor are consumed.

Disclosure of Invention

In view of the above, there is a need for a composite assembly for pile repair reinforcement that is simple in process and easy to operate.

A composite assembly for foundation pile repair reinforcement, comprising:

a sleeve;

the grating is positioned in the sleeve and comprises a plurality of first grating strips along a first direction and a plurality of second grating strips along a second direction, the second direction is parallel to the axial direction of the sleeve, and the first direction is vertical to the second direction;

and the plurality of limiters are fixed on the inner wall of the sleeve and used for limiting the movement of the grating in the second direction and enabling the grating to move along the first direction.

In the composite component for repairing and reinforcing the foundation pile, the grating is positioned in the sleeve and is positioned by the limiting device, and the limiting device limits the movement of the grating, so that the sleeve and the grating are integrated. When repairing and reinforcing foundation piles, the grating and the sleeve do not need to be installed step by step, the composite component is directly coated on the foundation pile with the surface being cleaned, the process is simple, the operation difficulty is small, time and labor are saved, and the rapid assembly is realized.

In one embodiment, the sleeve is cylindrical or rectangular cylindrical.

In one embodiment, the retainer has a slot for the first grid to pass through.

In one embodiment, the retainer includes a first body portion and a second body portion; the lower end of the first main body part is fixedly connected with the sleeve, and the upper end of the first main body part is fixedly connected with the second main body part.

In one embodiment, the upper end of the first main body part is provided with at least one limiting groove, the lower end of the second main body part is provided with a limiting part matched with the limiting groove, and the depth of the limiting groove is greater than the height of the limiting part;

the limiting part is inserted into the limiting groove, and the bottom wall and the side wall of at least one limiting groove and the end face of the limiting part are enclosed into the slot for the first grid to pass through.

In one embodiment, the first body portion has a first fixing hole, and the second body portion has a second fixing hole matching the first fixing hole; the limiting part is inserted into the limiting groove, and the first fixing hole is coaxial with the second fixing hole.

In one embodiment, a first groove is formed in the upper end of the first main body part, and after the first main body part is fixedly connected with the second main body part, the first groove and the lower end surface of the second main body part enclose the slot through which the first grid passes.

In one embodiment, a first groove is formed in the upper end of the first main body part, a second groove is formed in the lower end of the second main body part, and after the first main body part and the second main body part are fixedly connected, the first groove and the second groove enclose the slot through which the first grid passes.

In one embodiment, the stopper has a catch capable of engaging with the first grid.

The invention also provides a foundation pile repairing and reinforcing system.

The invention provides a foundation pile repairing and reinforcing system which comprises a composite assembly provided by the invention, wherein the bottom end of a sleeve is provided with a sealing strip tightly attached to the bottom end of a foundation pile, slurry is filled between the sleeve and the foundation pile, and the top of the sleeve is sealed by sealant.

The composite assembly provided by the invention is selected for the foundation pile repairing and reinforcing system, so that the process is simple, the operation difficulty is low, time and labor are saved, the rapid assembly is realized, and the repairing and reinforcing effects are improved.

Drawings

Fig. 1 is a top view of a composite assembly for foundation pile repair reinforcement according to an embodiment of the present invention.

Fig. 2 is a partially expanded schematic view of the composite assembly shown in fig. 1.

Fig. 3 is a schematic view of the composite assembly shown in fig. 1 fully deployed.

Fig. 4 is a schematic structural view of the stopper in fig. 1.

Fig. 5 is a schematic structural view of the first body portion in fig. 4.

Fig. 6 is a schematic structural view of the second body portion in fig. 4.

Fig. 7 is a schematic structural view of a stopper according to another embodiment of the present invention.

Fig. 8 is a schematic structural view of the first body portion in fig. 7.

Fig. 9 is a schematic structural view of the second body portion in fig. 7.

Fig. 10 is a schematic structural view of a foundation pile repairing and reinforcing system according to still another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 6, a composite assembly 100 for pile repair reinforcement according to an embodiment of the present invention includes a sleeve 110, a grid 130 disposed in the sleeve 110, and a plurality of stoppers 150 fixed to an inner wall of the sleeve 110.

In this embodiment, the sleeve 110 is cylindrical and is suitable for a cylindrical foundation pile. The sleeve 110 is made of plastic or fiber composite material, has certain flexibility, can be in a partially unfolded state under the action of external force, and is convenient to wrap the sleeve on the foundation pile. Of course, when the sleeve 110 has sufficient flexibility, it may also be unfolded in a plate shape, i.e., in a fully unfolded state. It should be noted that the sleeve 110 may also be in the shape of a rectangular cylinder or other regular or irregular shapes to adapt to foundation piles of different shapes.

The grid 130 includes a plurality of first bars 131 along a first direction and a plurality of second bars 133 along a second direction, and the first direction and the second direction are not in common, so that the plurality of first bars 131 and the plurality of second bars 133 are staggered. In this embodiment, the second direction is parallel to the axial direction of the sleeve 110, and the first direction is perpendicular to the second direction.

The grill 130 is made of metal, plastic, fiber composite material, etc. having flexibility. When the composite assembly 100 is coated on the foundation pile, it may be bent and deformed by an external force.

The stopper 150 is fixed to the inner wall of the sleeve 110 to limit the movement of the grill 130 in the second direction and to allow the grill 130 to move in the first direction.

Specifically, composite component 100 is in a fully or partially expanded state before use, and is bent under external force until sleeve 110 is closed when the foundation pile is repaired and reinforced.

In this embodiment, the stopper 150 has a slot 155 for the first grid 131 to pass through. When the first grill 131 passes through the slot 155, there is a gap between the first grill 131 and the slot wall of the slot 155, and the first grill 131 can slide along the first direction, that is, the grill 130 can slide along the first direction. The first grill 131 passes through the slots 155 of the plurality of stoppers 150, thereby restricting the movement of the grill 130 in the second direction. And because the first bars 131 and the second bars 133 are arranged in a staggered manner, when the grid 130 moves along the first direction until the second bars 133 touch the stopper 150, the stopper 150 prevents the grid 130 from moving continuously along the first direction, and vice versa.

The slots 155 of the retainer 150 may allow the grill 130 to slide a small amount in a first direction. Thus, when the composite assembly 100 is unfolded or folded, the grid 130 may reduce the tension of the grid 130 due to the deformation by moving in the first direction to a small extent.

The stopper 150 can control the distance between the grid 130 and the sleeve 110 and the distance between the grid 130 and the foundation pile in a limited manner, thereby improving the repairing and reinforcing effects.

In this embodiment, the stopper 150 includes a first body portion 151 and a second body portion 153. The first body 151 is fixedly connected to the sleeve 110 at a lower end thereof and fixedly connected to the second body 153 at an upper end thereof. In this embodiment, the first body 151 and the sleeve 110 are fixedly connected by bonding, but may be fixedly connected by screwing or the like.

Specifically, in this embodiment, the first body 151 has two retaining grooves 1511 at the upper end thereof, and the second body 153 has a retaining portion 1531 at the lower end thereof, which is matched with the retaining grooves 1511. The stopper 1531 is inserted into the stopper groove 1511, thereby positioning the first body part 151 and the second body part 153.

The depth of the limiting groove 1511 is greater than the height of the limiting part 1531, the limiting part 1531 is inserted into the limiting groove 1511, the end surface of the limiting part 1531 cannot abut against the bottom wall of the limiting groove 1511, and the bottom wall and the side wall of the limiting groove 1511 and the end surface of the limiting part 1531 enclose the slot 155 through which the first grid 131 passes.

It should be noted that there may be only one slot 155 on the stopper 150, and when the stopper 150 is fixed on the inner wall of the sleeve 110, the slot 155 is ensured to be along the first direction. Specifically, after the retainer 1531 is inserted into the retainer groove 1511, only one end surface of the retainer 1531 cannot abut against the bottom wall of the retainer groove.

In this embodiment, the first body 151 has a first fixing hole 1513, and the second body 153 has a second fixing hole 1533 matching the first fixing hole 1513. After the stopper portion 1531 is inserted into the stopper groove 1511, the first fixing hole 1513 is coaxial with the second fixing hole 1533, so that the first body portion 151 and the second body portion 153 can be fixedly connected by a pin or the like.

The stopper 150 is made of metal or plastic.

As shown in fig. 7 to 9, the present invention also provides another embodiment of the stopper. The stopper 250 also includes a first body portion 251 and a second body portion 253. The first body 251 is fixedly connected to the sleeve 110 at a lower end thereof and fixedly connected to the second body 253 at an upper end thereof.

Specifically, the first body 251 has a first recess 2511 at an upper end thereof, and the second body 253 has a second recess 2531 at a lower end thereof. After the first main body 251 and the second main body 253 are fixedly connected, the first recess 2511 and the second recess 2531 enclose an insertion groove 255 for the first grid 131 to pass through.

It should be noted that the limiter 250 may also have only the first recess 2511 or only the second recess 2531. Specifically, for example, only the first recess 2511 is provided in the stopper 250, and after the first body 251 and the second body 253 are fixedly connected, the lower end surfaces of the first recess 2511 and the second body 253 define the insertion groove 255.

In the present embodiment, the first main body 251 has a fixing column 2513 at an upper end thereof, the second main body 253 has a third fixing hole 2533 matched with the fixing column 2513 at a lower end thereof, and the fixing column 2513 is in interference fit with the third fixing hole 2533, so that the first main body 251 and the second main body 253 are fixedly connected.

In another embodiment, the stopper may further have a buckle capable of being engaged with the first grid, so as to achieve the positioning of the grid and the effect of reducing the tension generated when the grid is deformed. Of course, the stopper may also be connected to the grid in other ways.

The following takes the composite component 100 as an example, and specifically describes the assembly process of the composite component 100:

first, a plurality of stoppers 150 are fixedly attached to the inner wall of the sleeve 100 to ensure that the insertion grooves 155 are in the first direction, the distance between the stoppers 150 is determined according to the pitch of the grids, and only a portion of the first grids 131 may pass through the stoppers 150.

Then, the first and

second body portions

151 and 153 of the stopper 150 are opened.

Further, the first grill bars 131 of the grill 130 are fitted into the retaining grooves 1511.

Finally, the first body portion 151 and the second body portion 153 are fixedly connected to complete the assembly of the composite component 100.

As shown in fig. 10, a foundation pile repairing and reinforcing system according to another embodiment of the present invention includes the composite assembly 100 according to the present invention, wherein the bottom end of the sleeve 110 is provided with a sealing strip 111 closely attached to the bottom end of the foundation pile 300, a grouting material 115 is filled between the sleeve 110 and the foundation pile 300, and the top of the sleeve 110 is sealed with a sealant 113. Preferably, the sealant 113 is a trowel grade sealant, the seal 111 is a compressible seal,

the process of repairing and reinforcing the foundation pile by using the foundation pile repairing and reinforcing system is described in detail as follows:

first, the unfolded composite assembly 100 is coated on the foundation pile 300 after the surface cleaning process.

Then, the sealing tape 111 is adhered to the bottom of the sleeve 110, a sealant is applied to the joint of the sleeve 110, the sleeve 110 is temporarily fixed with a fastening tape, and the joint of the sleeve 110 is fastened with a tapping screw.

Further, grouting material 115 is injected between sleeve 110 and foundation pile 300.

And finally, after the grouting material 115 is fixed, sealing the top of the sleeve by using a sealant to finish the repairing and reinforcing work of the foundation pile.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A composite assembly for foundation pile repair reinforcement, comprising:

a sleeve;

the plurality of limiters are fixed on the inner wall of the sleeve and used for limiting the movement of the grating in the second direction and enabling the grating to move along the first direction; the limiting stopper is provided with a slot for the first grid to pass through; the stopper comprises a first main body part and a second main body part; the lower end of the first main body part is fixedly connected with the sleeve, and the upper end of the first main body part is fixedly connected with the second main body part;

the upper end of the first main body part is provided with at least one limiting groove, the lower end of the second main body part is provided with a limiting part matched with the limiting groove, the depth of the limiting groove is greater than the height of the limiting part, the limiting part is inserted into the limiting groove, and the bottom wall and the side wall of at least one limiting groove and the end surface of the limiting part form a slot for the first grid to pass through; or the upper end of the first main body part is provided with a first groove, and after the first main body part is fixedly connected with the second main body part, the lower end surfaces of the first groove and the second main body part form the slot for the first grid bar to pass through; or the upper end of the first main body part is provided with a first groove, the lower end of the second main body part is provided with a second groove, and after the first main body part is fixedly connected with the second main body part, the first groove and the second groove form the slot for the first grid bar to pass through.

2. The composite assembly of claim 1 wherein the sleeve is cylindrical or rectangular tubular.

3. The composite assembly of claim 1, wherein the first body portion has a first securing hole and the second body portion has a second securing hole that mates with the first securing hole; the limiting part is inserted into the limiting groove, and the first fixing hole is coaxial with the second fixing hole.

4. The composite assembly of claim 1 wherein the retainer has a snap that can engage the first grid.

5. A foundation pile repair and reinforcement system, comprising the composite assembly of any one of claims 1 to 4, wherein the bottom end of the sleeve is provided with a sealing strip which is tightly attached to the bottom end of the foundation pile, slurry is filled between the sleeve and the foundation pile, and the top of the sleeve is sealed by sealant.