CN114687579B - Construction method of unit-type wrapped stone strip floor nondestructive reinforcement structure - Google Patents

Abstract

The invention discloses a unit-type wrapped stone strip floor non-destructive reinforcement structure and a construction method in the technical field of wrapped stone strip floor non-destructive reinforcement structure. The structure comprises strip stone slabs, high-strength steel wire mesh/carbon fiber grids, and special mortar. The reinforcement range is a local area of 1/3-1/2 of the span of the floor slab. 2-3 strip stones are used as a basis, and high-strength steel wire mesh/carbon fiber grids are wrapped around the surface along the outer periphery. Special mortar is used as a base layer to bond the high-strength steel wire mesh/carbon fiber grid to the stone strip floor slab to form a reinforced basic unit. The reinforcement scheme uses high-strength steel wire/carbon fiber grids to carry out unit wrapped reinforcement on the stone strip floor slab, enhances the local combined stress performance of a plurality of independent strip stones, and simultaneously adds longitudinal and transverse reinforcement measures on the basis of the reinforced basic unit, further enhances the integrity and continuous collapse resistance of the stone strip floor slab. The scheme is simple to operate and low in cost, and therefore has wide engineering application and promotion value.

Description

A construction method for non-destructive reinforcement structure of unit-type wrapped stone strip floor

Technical Field

The invention relates to the technical field of non-destructive reinforcement structures of wrapped stone strip floor slabs, and in particular to a construction method of a unit-type wrapped stone strip floor slab non-destructive reinforcement structure.

Background Art

Stone is one of the earliest natural building materials used by humans. my country's inland mountainous areas and coastal areas of southern Fujian are rich in granite resources and of high quality. A large number of village and town buildings choose granite as a building material. The floor slabs, walls, columns, etc. of stone-structured residential buildings in this area are basically made of stone. In order to ensure that the structure has reliable safety performance, the bending members need to have good ductile deformation capacity. However, due to the brittleness and low tensile strength of stone, the practice of using stone as a bending member (such as stone floor slabs) has obvious defects. At present, most of the reinforcement technologies for stone slabs have problems such as complex construction, high cost, and practical operation difficulties. In addition, the reinforcement is basically destructive to the stone, so it is difficult to be widely promoted and applied in actual projects.

Based on this, the present invention designs a construction method of a unit-type wrapped stone strip floor non-destructive reinforcement structure to solve the above problems.

Summary of the invention

The purpose of the invention is to provide a construction method for a unit-type wrapped stone floor non-destructive reinforcement structure to solve the above technical problems.

To achieve the above-mentioned purpose, the invention provides the following technical solutions: a unit-type wrapped stone strip floor non-destructive reinforcement structure, including strip stone, high-strength steel wire mesh/carbon fiber grid and mortar, wherein the mortar is used as a base layer to bond the high-strength steel wire mesh/carbon fiber grid to the stone strip floor to form a reinforced basic unit.

Preferably, the basic reinforcement unit is a high-strength steel wire/carbon fiber grid based on 2-3 strip stone slabs, which are wrapped around the surface along the periphery until the beginning and the end overlap each other.

Preferably, the high-strength steel wire mesh/carbon fiber grid passes through the gaps between the strip-shaped stone materials and reaches the upper and lower surfaces of the strip-shaped stone slabs.

Preferably, the high-strength steel wire mesh/carbon fiber grid reinforcement range is a local area of 1/3-1/2 of the span of the floor slab.

Preferably, when the strip stone slabs at the edge of the floor slab cannot form an integrally closed basic reinforcement unit, a “]”-shaped or “[”-shaped non-closed coating treatment is applied to them separately.

Preferably, a plurality of the basic reinforcement units are reinforced transversely, longitudinally, or transversely and longitudinally.

A construction method for a unit-type wrapped stone strip floor non-destructive reinforcement structure comprises the following steps:

Step (1) filling the gaps between the strip stones prepared as the basic reinforcement units with mortar;

Step (2) applying the carbon fiber mesh/high-strength steel wire mesh mortar to the strip stone reinforcement area to be used as the reinforcement basic unit;

Step (3) starting from the upper surface of the strip stone coated with mortar, the carbon fiber grid/high-strength steel wire mesh is wrapped around the strip stone along the outer periphery of the strip stone until an overlapping area of 1/3-1/2 of the width of a single strip stone is formed with the upper surface carbon fiber grid/high-strength steel wire mesh;

Step (4) applying a thin layer of mortar on the carbon fiber mesh/high-strength steel wire mesh to cover the carbon fiber mesh/high-strength steel wire mesh, thereby forming a reinforced basic unit;

Step (5) Repeat the above steps to make a plurality of reinforced basic units with the remaining strip stones;

Step (6) The strip stones at both edges of the floor slab are constructed according to the reinforcement basic unit construction steps, but when the carbon fiber grid is laid, only a "]"-shaped or "["-shaped non-closed encapsulation area is formed;

Step (7) filling the gaps between the reinforcement basic units with mortar;

Step (8) After the mortar in the reinforced floor slab has initially set, each reinforced basic unit can continue to be reinforced by applying longitudinal or transverse or longitudinal and transverse combined bonding of carbon fiber grid/high-strength steel wire mesh.

Preferably, in step (8), for the longitudinal and transverse combined bonding scheme, in order to ensure the rationality of the combined force, longitudinal bonding should be performed first and then transverse bonding.

Compared with the prior art, the invention has the following beneficial effects:

The present invention takes into account the discrete and random characteristics of load distribution. With the proposed reinforcement basic unit concept, the local combined stress performance of several independent strip stones can be enhanced. At the same time, the integrity and anti-continuous collapse capability of the stone strip floor can be further improved by adding longitudinal and transverse reinforcement measures to each basic unit. In addition, the reinforcement scheme proposed by the present invention has the advantages of simple construction operation, short construction period, low cost, and almost no damage to the original strip stone, so it has good practical engineering promotion value.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a three-dimensional view of Embodiment 1 of the present invention;

FIG2 is a cross-sectional view of embodiment 1 of the present invention;

FIG3 is a three-dimensional view of a basic assembly unit of the present invention;

FIG4 is a three-dimensional view of Embodiment 2 of the present invention;

FIG5 is a cross-sectional view of Embodiment 2 of the present invention;

FIG6 is a three-dimensional view of Embodiment 3 of the present invention;

FIG. 7 is a cross-sectional view of Embodiment 3 of the present invention.

Explanation of symbols in the figure:

1 is strip stone, 2 is high-strength steel wire mesh, 3 is reinforcement basic unit, 4 is carbon fiber grid, and 5 is mortar.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

Embodiment 1 As shown in Figures 1-2, a basic unit-based non-destructive reinforcement technology for wrapped stone strip floor slabs includes strip stone slabs 1, high-strength steel wire mesh 2, reinforcement basic units 3, and mortar 5. The stone strips in the stone floor slab are grouped into a reinforcement basic unit 3 in pairs, and the stone strips at the edge of the floor slab are individually subjected to a "]" type or "[" type non-closed coating treatment. The gaps between the reinforcement basic units 3 are filled with mortar 5. The concept of reinforcement basic units takes into account the discrete and random characteristics of load distribution, and can enhance the local combined stress performance of several independent strip stones.

In Example 1, the implementation method of the reinforcement basic unit is as follows: In the embodiment,

(1) The gaps between the strip-shaped stones 1 to be used as the basic reinforcement unit 3 are filled with mortar 5 .

(2) Apply mortar 5 to the reinforcement area of the strip stone 1 to be used as the reinforcement basic unit 3.

(3) The high-strength steel wire mesh 2 is wrapped around the stone strip 1 along the outer circumference of the stone strip 1 starting from the upper surface of the stone strip 1 coated with the mortar 5, until an overlapping area of 1/3-1/2 of the width of a single stone strip is formed with the high-strength steel wire mesh 2 on the upper surface.

(4) A thin layer of mortar 5 is pressed and spread on the high-strength steel wire 2 to cover the high-strength steel wire 2, thereby forming a reinforced basic unit 3.

(5) Repeat the above steps to make a plurality of reinforced basic units 3 with the remaining strip-shaped stones 1;

(6) The strip stones 1 at both edges of the floor slab are constructed according to the reinforcement basic unit construction steps, but when the carbon fiber grid is laid, only a "]"-shaped or "["-shaped non-closed encapsulation area is formed;

(7) Filling the gaps between the solid basic units 3 with mortar 5;

(8) After the mortar 5 in the reinforced floor slab has initially set, each reinforced basic unit 3 can continue to be reinforced with longitudinal or transverse or longitudinal and transverse combined bonding carbon fiber grid/high-strength steel wire mesh. For the longitudinal and transverse combined bonding scheme, in order to ensure the rationality of the combined force, longitudinal bonding should be performed first and then transverse bonding.

In Example 1, the reinforcement range is the 1/3-1/2 span area in the middle of the span.

In Example 1, the implementation method of the stone strips on both edges of the floor slab is the same as the implementation methods (2), (3) and (4) of the reinforcement basic unit, but when laying the high-strength steel wire mesh in step (3), only a "]"-shaped or "["-shaped non-closed covering area is formed.

As shown in Figures 3-4, on the basis of Example 1, a layer of mortar 5 is applied longitudinally to the lower surface of the reinforcement basic unit of Example 1, and the carbon fiber grid 4 is cut to the same width as the reinforcement basic unit 3 and laid on the mortar 5, and finally the mortar 5 is pressed and applied to cover the surface of the carbon fiber grid 4. The longitudinal bonding of the carbon fiber grid can further improve the bearing capacity and deformation capacity of each unit.

As shown in Figures 5-6, on the basis of Example 1, four mortars 5 of appropriate width are applied to the lower surface of the reinforced basic unit of Example 1 from one edge of the stone floor to the other edge of the stone floor, and the high-strength steel wire mesh 2 is cut into a suitable width and laid on the mortar 5, and finally the mortar 5 is pressed and applied to cover the surface of the high-strength steel wire mesh 2. The horizontal bonding of the high-strength steel wire mesh can improve the collaborative working ability between the units, thereby improving the integrity and anti-continuous collapse ability of the stone floor.

Embodiment 4 is a combination of Embodiment 2 and Embodiment 3, that is, the carbon fiber mesh is firstly bonded longitudinally to the bottom of the basic unit, and then the high-strength steel wire mesh is bonded transversely.

It should be noted that the carbon fiber mesh and high-strength steel wire mesh pasted on the lower part of the strip-shaped stone basic unit in Examples 2-4 can be replaced by each other or by other high-strength fibers.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims (3)

1. A unit-type wrapped stone strip floor non-destructive reinforcement structure, characterized in that it comprises strip stones, high-strength steel wire mesh/carbon fiber grid and mortar, wherein the high-strength steel wire mesh/carbon fiber grid is bonded to the stone strip floor with the mortar as a base layer to form a reinforcement basic unit; The basic reinforcement unit is a high-strength steel wire/carbon fiber grid based on 2-3 strip stone slabs, which are wrapped around the surface along the periphery until the beginning and end overlap each other; The high-strength steel wire mesh/carbon fiber grid passes through the gaps between the strip-shaped stones and reaches the upper and lower surfaces of the strip-shaped stone slabs; The high-strength steel wire mesh/carbon fiber grid reinforcement range is the local area of 1/3-1/2 of the span of the floor slab; When the strip stone slabs at the edge of the floor slab cannot form an integrally closed reinforcement basic unit, a "]" type or "[" type non-closed coating treatment is applied to them separately; Several of the reinforcement basic units are reinforced in a transverse, longitudinal or transverse and longitudinal manner. 2. The construction method of a unit-type wrapped stone floor non-destructive reinforcement structure according to claim 1, characterized in that it comprises the following steps: Step (1) filling the gaps between the strip stones prepared as the basic reinforcement units with mortar; Step (2) applying the carbon fiber mesh/high-strength steel wire mesh mortar to the strip stone reinforcement area prepared as the reinforcement basic unit; Step (3) starting from the upper surface of the strip stone coated with mortar, the carbon fiber grid/high-strength steel wire mesh is wrapped around the strip stone along the outer periphery of the strip stone until an overlapping area of 1/3-1/2 of the width of a single strip stone is formed with the upper surface carbon fiber grid/high-strength steel wire mesh; Step (4) applying a thin layer of mortar on the carbon fiber mesh/high-strength steel wire mesh to cover the carbon fiber mesh/high-strength steel wire mesh, thereby forming a reinforced basic unit; Step (5) Repeat the above steps to make a number of reinforced basic units with the remaining strip stones; Step (6) The strip stones at both edges of the floor slab are constructed according to the reinforcement basic unit construction steps, but when the carbon fiber grid is laid, only a "]" or "["-shaped non-closed encapsulation area is formed; Step (7) filling the gaps between the reinforcement basic units with mortar; Step (8) After the mortar in the reinforced floor slab has initially set, each reinforced basic unit may continue to be reinforced with longitudinal or transverse or longitudinal and transverse combined bonding of carbon fiber mesh/high-strength steel wire mesh. 3. The construction method of a unit-type wrapped stone floor non-destructive reinforcement structure according to claim 2 is characterized in that: in step (8), for the longitudinal and transverse combined bonding scheme, in order to ensure the rationality of the combined force, longitudinal bonding should be performed first and then transverse bonding.