阅读说明：本技术 连绵长条形塑石结构的施工方法 (Construction method of continuous strip-shaped plastic stone structure ) 是由 蒋大千 苟康全 周波 郭振城 罗烈庆 梁秋华 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种连绵长条形塑石结构的施工方法,包括：步骤1,在砼现浇基础上,制作并安装次骨架结构；步骤2,制作并安装钢筋网：用热镀锌钢筋焊制成根据所需造型的钢筋网结构体,用C型钉将热镀锌细目网固定在钢筋网结构体的内侧,然后将钢筋网结构体全面焊接在次骨架结构上；步骤3,安装热镀锌菱形网：在钢筋网上卡装支撑卡扣,之后用C型钉将热镀锌菱形网固定在钢筋网结构体外侧；步骤4,塑型处理：在内层的热镀锌细目网和外层的热镀锌菱形网之间钢筋网造型上进行喷涂浆料并塑型后即制成连绵长条形塑石结构。该方法能保证连绵长条形塑石基层厚度,提升塑石结构使用耐久年限,易调整及更改塑石造型,制得的塑石结构坚固、耐用,且仿真度高。(The invention discloses a construction method of a continuous strip-shaped plastic stone structure, which comprises the following steps: step 1, manufacturing and installing a secondary framework structure on the basis of concrete cast-in-place; step 2, manufacturing and installing a reinforcing mesh: welding a hot-galvanized steel bar into a steel bar mesh structure body according to the required shape, fixing the hot-galvanized fine mesh net on the inner side of the steel bar mesh structure body by using a C-shaped nail, and then welding the steel bar mesh structure body on the secondary framework structure completely; step 3, installing a hot galvanizing diamond net: clamping a support buckle on the steel bar net, and fixing the hot-galvanized diamond net on the outer side of the steel bar net structure body by using a C-shaped nail; and 4, molding treatment: and spraying slurry on the reinforcing mesh model between the hot galvanizing fine mesh net on the inner layer and the hot galvanizing diamond net on the outer layer, and molding to obtain the continuous strip-shaped plastic stone structure. The method can ensure the thickness of the continuous strip-shaped plastic stone base layer, improve the service life of the plastic stone structure, easily adjust and change the plastic stone shape, and the manufactured plastic stone structure is firm and durable and has high simulation degree.)

1. A construction method of a continuous strip-shaped plastic stone structure is characterized by comprising the following steps:

step 1, on a concrete cast-in-place foundation to be manufactured with a continuous strip-shaped plastic stone structure, installing an expansion bolt on the concrete cast-in-place foundation by welding angle steel to form a sub-framework structure;

step 2, manufacturing and installing a reinforcing mesh: welding a hot-galvanized steel bar into a steel bar mesh structure body according to the required shape, fixing a hot-galvanized fine mesh net on the inner side of the steel bar mesh structure body by using a C-shaped nail, and then welding the steel bar mesh structure body on the secondary framework structure completely;

step 3, installing a hot galvanizing diamond net: clamping a support buckle on the steel bar net, and fixing the hot-galvanized diamond net on the outer side of the steel bar net structural body by using a C-shaped nail;

and 4, molding treatment: and spraying slurry on the reinforcing mesh model between the hot galvanizing fine mesh net on the inner layer and the hot galvanizing diamond net on the outer layer, and molding to obtain the continuous strip-shaped plastic stone structure.

2. The method of constructing a continuous strand-shaped plastic stone structure as claimed in claim 1,

in step 2 of the method, in the mesh reinforcement molding, the distance between the transverse steel bars and the vertical steel bars is 200 mm.

3. The method of constructing a continuous strand-shaped plastic stone structure as claimed in claim 1,

in step 3 of the method, the length of the support buckle is as follows: 35 mm.

4. The method of constructing a continuous strand-shaped plastic stone structure as claimed in claim 1, wherein in the method,

the diameter of the hot-dip galvanized steel bar is as follows: phi 6.5 mm;

the hot-dip galvanized fine mesh adopts a hot-dip galvanized steel wire mesh with the diameter of 6 multiplied by phi 0.38 mm;

the diamond net is a 25 multiplied by phi 0.7mm hot galvanizing steel wire diamond net.

5. The method for constructing the continuous elongated plastic stone structure as claimed in any one of claims 1 to 4, wherein the method is characterized in that the rust prevention treatment is carried out on all welding points and joints to ensure that the rust prevention grade reaches Sa2¹/₂。

6. The method for constructing the continuous elongated plastic stone structure as claimed in claim 5, wherein the method is characterized in that the welding points and the joints are subjected to rust prevention treatment to achieve the rust prevention grade Sa2¹/₂Comprises the following steps: the paint is coated 2 times by adopting epoxy zinc-rich primer, 1 time by adopting epoxy micaceous iron intermediate paint and 2 times by adopting surface paint, wherein the surface paint adopts any one of epoxy, polyurethane, acrylic epoxy and acrylic polyurethane.

7. The method for constructing a continuous elongated plastic stone structure according to any one of claims 1 to 4, wherein in step 4 of the method, slurry is sprayed on the steel bar mesh molding between the hot-galvanized fine mesh net on the inner layer and the hot-galvanized diamond mesh net on the outer layer, and the continuous elongated plastic stone structure is formed after the molding is completed:

step 41, spraying cement mortar on the hot galvanizing rhombic net on the outer side of the steel bar net model and the hot galvanizing fine mesh net on the inner side of the steel bar net model to form a bottom layer;

step 42, performing galling treatment on the surface of the bottom layer;

step 43, spraying cement mortar on the surface of the bottom layer after the napping treatment to form a molding layer with the thickness not less than 30 mm;

step 44, molding the molding layer according to a set shape;

and step 45, after the molded shape is fixed and molded, spraying waterproof paint, curing agent and sealing paint on the surface of the shape in sequence to obtain the continuous strip-shaped plastic stone structure.

8. The method for constructing a plastic-stone slab with a continuous strip shape as claimed in claim 7, wherein in step 41 of the method, the hot galvanized rhombic net outside the steel bar net shape and the hot galvanized fine mesh net inside the steel bar net shape are sprayed with cement mortar to form a bottom layer:

judging the internal space of the reinforcing mesh model, directly performing front-side guniting if the internal space is less than 0.8 multiplied by 0.8m, and otherwise, performing sandblasting slurry covering on a secondary framework and a reinforcing mesh model welding point on the reverse side of the reinforcing mesh model;

front-side guniting: spraying cement mortar mixed by cement and river sand according to the weight ratio of 1:3 from the front surface of the hot-galvanized diamond mesh on the outer side through a low air pressure of a spraying machine, so that the mortar passes through the hot-galvanized diamond mesh on the outer side and is molded through a reinforcing mesh in the middle, and the thickness of the mortar is not less than 20 mm;

back surface smoothing: when the air temperature environment is 30-35 ℃, trowelling the exposed steel bar position by using a mortar knife after one hour of front-side guniting is finished, and covering and trowelling the exposed steel bar position by using mortar until no empty drum exists, thus finishing the manufacture of the bottom layer;

in step 42 of the method, the roughening treatment of the surface of the bottom layer comprises: after the bottom layer is manufactured, spraying slurry on the surface of the bottom layer, and then carrying out manual napping treatment, wherein the surface is maintained for 1-3 days after the napping treatment, so that the cement mortar reaches the strength and does not crack;

in step 44 of the method, the molding is performed on the molding layer according to a set shape:

carrying out first molding guniting, and maintaining for seven days after the first molding guniting to ensure that the cement mortar reaches the strength without cracking;

and then, performing second detail shaping: carrying out second molding guniting on the basis of the first molding guniting, carving the fine molding by using a corresponding carving tool 25-35 minutes after the second molding guniting is dried, repeatedly brushing by using a soft brush when the second molding guniting is not completely dried after carving is finished, and removing sand with a rough surface;

in step 45 of the method, after the molded shape is fixed and molded, the waterproof coating, the curing agent and the sealing paint are sequentially sprayed on the surface of the shape:

after the molded plastic is fixed and molded, cleaning the surface layer to ensure that the surface layer has no dirt, dust or cement residue;

spraying alkali-resistant primer to cover the bottom layer;

and (4) carrying out large-area finish paint spraying construction according to the pre-manufactured color effect construction sample plate.

9. The method for constructing a continuous elongated plastic stone structure according to claim 8, wherein in the method, an anti-efflorescence agent is added to cement mortar;

if the using environment temperature is low, an antifreezing agent is added into the cement mortar.

10. The method of constructing a continuous strand-shaped plastic stone structure as claimed in claim 8,

in step 44 of the method, in the second detail shaping, glass fiber or hemp fiber which increases the strength and toughness of the cement mortar is added into the cement mortar;

in step 44 of the method, after the plastic layer is molded according to a set shape, wet water curing is carried out, watering curing is carried out for not less than 4-5 times per day in a high-temperature period, watering curing is carried out for 2-3 times in a low-temperature period, and watering is not carried out at a temperature lower than 5 ℃.

Technical Field

The invention relates to the field of plastic-stone construction, in particular to a construction method of a continuous strip-shaped plastic-stone structure.

Background

At present, in the construction of continuous strip-shaped plastic stone structure, the commonly adopted construction mode is as follows: placing the welded steel skeleton with the plastic stone base layer on the original foundation ground, welding the welded steel bar mesh with the welded modeling on the steel skeleton with the plastic stone base layer, then binding the wire mesh on the steel bar mesh by using wires, and manually smearing cement mortar on the surface layer of the wire mesh to form a plastic stone structure; the construction mode has no concrete cast-in-place foundation, the plastic-stone structure is easy to displace, crack and fall off after long-time ground settlement, and rainwater enters after the plastic-stone structure cracks and falls off, so that the internal steel structure is easy to rust.

Disclosure of Invention

Based on the problems in the prior art, the invention aims to provide a continuous strip-shaped plastic-stone structure construction method, which can solve the problems that an internal reinforcing mesh is easy to rust, a plastic-stone base cement mortar is uneven in thickness and easy to crack and fall off and the like in the conventional continuous strip-shaped plastic-stone structure construction.

The purpose of the invention is realized by the following technical scheme:

the embodiment of the invention provides a construction method of a continuous strip-shaped plastic stone structure, which comprises the following steps:

step 1, on a concrete cast-in-place foundation to be manufactured with a continuous strip-shaped plastic stone structure, installing an expansion bolt on the concrete cast-in-place foundation by welding angle steel to form a sub-framework structure;

step 2, manufacturing and installing a reinforcing mesh: welding a hot-galvanized steel bar into a steel bar mesh structure body according to the required shape, fixing a hot-galvanized fine mesh net on the inner side of the steel bar mesh structure body by using a C-shaped nail, and then welding the steel bar mesh structure body on the secondary framework structure completely;

step 3, installing a hot galvanizing diamond net: clamping a support buckle on the steel bar net, and fixing the hot-galvanized diamond net on the outer side of the steel bar net structural body by using a C-shaped nail;

and 4, molding treatment: and spraying slurry on the reinforcing mesh model between the hot galvanizing fine mesh net on the inner layer and the hot galvanizing diamond net on the outer layer, and molding to obtain the continuous strip-shaped plastic stone structure.

According to the technical scheme provided by the invention, the construction method of the continuous strip-shaped plastic stone structure provided by the embodiment of the invention has the beneficial effects that:

the secondary skeleton structure is firstly manufactured on the basis of concrete cast-in-place, the reinforcing mesh model made of hot-galvanized reinforcing steel bars is welded on the secondary skeleton structure, the hot-galvanized fine mesh net is arranged on the inner side of the reinforcing mesh model, and the hot-galvanized diamond mesh net is arranged on the outer side of the reinforcing mesh model, so that the reinforcing mesh model skeleton which is not easy to rust is formed, the thickness of a continuous long strip-shaped plastic stone base layer can be ensured, the service life of the plastic stone structure is prolonged, the plastic stone model is easy to adjust and change, the manufactured plastic stone structure is firm and durable, and the simulation degree is.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a flow chart of a construction method of a continuous strip-shaped plastic stone structure according to an embodiment of the present invention;

FIG. 2 is a flowchart of the molding step in the construction method according to the embodiment of the present invention;

FIG. 3 is a schematic side sectional view of a continuous strip-shaped plastic stone structure according to an embodiment of the present invention;

each of the labels in the figure is: 1-hot galvanizing diamond net; 2-shaping a reinforcing mesh; 3-hot galvanizing fine mesh net; 4-modeling the framework structure; 5-concrete cast-in-situ foundation.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a method for constructing a continuous strip-shaped plastic stone structure, including:

step 1, on a concrete cast-in-place foundation to be manufactured with a continuous strip-shaped plastic stone structure, installing an expansion bolt on the concrete cast-in-place foundation by welding angle steel to form a sub-framework structure;

step 2, manufacturing and installing a reinforcing mesh: welding a hot-galvanized steel bar into a steel bar mesh structure body according to the required shape, fixing a hot-galvanized fine mesh net on the inner side of the steel bar mesh structure body by using a C-shaped nail, and then welding the steel bar mesh structure body on the secondary framework structure completely;

step 3, installing a hot galvanizing diamond net: clamping a support buckle on the steel bar net, and fixing the hot-galvanized diamond net on the outer side of the steel bar net structural body by using a C-shaped nail;

and 4, molding treatment: and spraying slurry on the reinforcing mesh model between the hot galvanizing fine mesh net on the inner layer and the hot galvanizing diamond net on the outer layer, and molding to obtain the continuous strip-shaped plastic stone structure.

In step 2 of the above method, in the mesh reinforcement molding, the distance between the horizontal steel bars and the vertical steel bars is 200 mm.

In step 3 of the above method, the length of the support buckle is: 35 mm.

In the above-mentioned method, the first step of the method,

the diameter of the hot-dip galvanized steel bar is as follows: phi 6.5 mm;

the hot-dip galvanized fine mesh adopts a hot-dip galvanized steel wire mesh with the diameter of 6 multiplied by phi 0.38 mm;

the diamond net is a 25 multiplied by phi 0.7mm hot galvanizing steel wire diamond net.

In the method, full welding is adopted for welding, and welding slag is cleaned after welding;

in the method, the rust prevention treatment is carried out on all welding points and joints to ensure that the rust prevention grade reaches Sa2¹/₂. Specifically, each welding point, hot galvanizing angle steel, the joint of the hot galvanizing angle steel and the expansion screw are subjected to rust prevention treatment, so that the rust prevention grade reaches Sa2¹/₂；

In the method, the rust prevention treatment is carried out on all welding points and joints to ensure that the rust prevention grade reaches Sa2¹/₂Comprises the following steps: the paint is coated 2 times by adopting epoxy zinc-rich primer, 1 time by adopting epoxy micaceous iron intermediate paint and 2 times by adopting surface paint, wherein the surface paint adopts any one of epoxy, polyurethane, acrylic epoxy and acrylic polyurethane.

In step 4 of the method, slurry is sprayed on the reinforcing mesh model between the hot-galvanized fine mesh net on the inner layer and the hot-galvanized diamond net on the outer layer, and the reinforcing mesh model is molded, and the continuous strip-shaped plastic stone structure is prepared after the molding is finished:

step 41, spraying cement mortar on the hot galvanizing rhombic net on the outer side of the steel bar net model and the hot galvanizing fine mesh net on the inner side of the steel bar net model to form a bottom layer;

step 42, performing galling treatment on the surface of the bottom layer;

step 43, spraying cement mortar on the surface of the bottom layer after the napping treatment to form a molding layer with the thickness not less than 30 mm;

step 44, molding the molding layer according to a set shape;

and step 45, after the molded shape is fixed and molded, spraying waterproof paint, curing agent and sealing paint on the surface of the shape in sequence to obtain the continuous strip-shaped plastic stone structure.

In step 41 of the method, the step of spraying cement mortar on the hot-galvanized diamond mesh outside and the hot-galvanized fine mesh inside the steel bar mesh molding to form a bottom layer comprises the following steps:

judging the internal space of the reinforcing mesh model, directly performing front-side guniting if the internal space is less than 0.8 multiplied by 0.8m, and otherwise, performing sandblasting slurry covering on a secondary framework and a reinforcing mesh model welding point on the reverse side of the reinforcing mesh model;

front-side guniting: spraying cement mortar mixed by cement and river sand according to the weight ratio of 1:3 from the front surface of the hot-galvanized diamond mesh on the outer side through a low air pressure of a spraying machine, so that the mortar passes through the hot-galvanized diamond mesh on the outer side and is molded through a reinforcing mesh in the middle, and the thickness of the mortar is not less than 20 mm;

back surface smoothing: when the air temperature environment is 30-35 ℃, trowelling the exposed steel bar position by using a mortar knife after one hour of front-side guniting is finished, and covering and trowelling the exposed steel bar position by using mortar until no empty drum exists, thus finishing the manufacture of the bottom layer;

in step 42 of the method, the roughening treatment of the surface of the bottom layer comprises: after the bottom layer is manufactured, spraying slurry on the surface of the bottom layer, and then carrying out manual napping treatment, wherein the surface is maintained for 1-3 days after the napping treatment, so that the cement mortar reaches the strength and does not crack;

in step 44 of the method, the molding is performed on the molding layer according to a set shape:

carrying out first molding guniting, and maintaining for seven days after the first molding guniting to ensure that the cement mortar reaches the strength without cracking;

and then, performing second detail shaping: carrying out second molding guniting on the basis of the first molding guniting, carving the fine molding by using a corresponding carving tool 25-35 minutes after the second molding guniting is dried, repeatedly brushing by using a soft brush when the second molding guniting is not completely dried after carving is finished, and removing sand with a rough surface;

in step 45 of the method, after the molded shape is fixed and molded, the waterproof coating, the curing agent and the sealing paint are sequentially sprayed on the surface of the shape:

after the molded plastic is fixed and molded, cleaning the surface layer to ensure that the surface layer has no dirt, dust or cement residue;

spraying alkali-resistant primer to cover the bottom layer;

and (4) carrying out large-area finish paint spraying construction according to the pre-manufactured color effect construction sample plate.

In the method, an anti-alkali agent is added into cement mortar;

if the use environment temperature is low, adding an antifreezing agent into the cement mortar;

in step 44 of the method, in the second detail shaping, glass fiber or hemp fiber which can increase the strength and toughness of the cement mortar is added into the cement mortar;

in step 44 of the method, after the plastic layer is molded according to a set shape, wet water curing is carried out, watering curing is carried out for not less than 4-5 times per day in a high-temperature period, watering curing is carried out for 2-3 times in a low-temperature period, and watering is not carried out at a temperature lower than 5 ℃.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, wherein the described examples are a part of the embodiments of the present invention, but not all of the embodiments, and all other embodiments obtained by those skilled in the art without any creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.