CN110593259A - An anti-floating anchor construction structure and an anti-floating anchor construction method - Google Patents

Abstract

The invention provides an anti-floating anchor rod construction structure and an anti-floating anchor rod construction method, belonging to the field of underground structures of constructional engineering, wherein the anti-floating anchor rod construction structure comprises an anchor rod hole forming and an anti-floating anchor rod; the anchor rod pore-forming arranged on the bearing stratum comprises a fixed section and a sediment section, wherein the sediment section is arranged below the fixed section and used for receiving sediment; the anti-floating anchor rod comprises a grouting pipe, an anchor rod main rib and at least one steel bar bracket; the anchor rod main ribs are fixedly arranged on the outer side of the grouting pipe, and one ends of the anchor rod main ribs are inserted into the fixed section to form an external connection section exposed out of the fixed section; the steel bar support is fixedly connected with the anchor rod main reinforcement at the part of the external section, and the steel bar support is used for preventing the anchor rod main reinforcement from entering the sediment section. The influence of a certain amount of hole bottom sediment and accumulated water on the quality of the hole bottom can be effectively solved, and the construction efficiency is improved.

Description

An anti-floating anchor construction structure and an anti-floating anchor construction method

technical field

The invention relates to the field of underground structures of construction engineering, in particular to an anti-floating anchor construction structure and an anti-floating anchor construction method.

Background technique

At present, the anti-floating anchor construction adopts the traditional construction technology. After the hole is formed, the anti-floating anchor reinforcement is lowered. If it is difficult to lower the anti-floating anchor reinforcement, the anchor reinforcement is raised to clean the hole. If a small amount of sediment is not easy to find, it will affect the construction quality. The machine has been displaced, and moving the drilling machine to clear the bottom will easily cause the soil around the hole to fall into the hole, causing a vicious circle, as shown in Figure 1 and Figure 2.

Contents of the invention

The invention provides an anti-floating anchor construction structure and an anti-floating anchor construction method, aiming at solving the above-mentioned problems existing in the anti-floating anchor construction structure and anti-floating anchor construction method in the prior art.

The present invention is achieved like this:

An anti-floating anchor construction structure, comprising anchor holes and anti-floating anchors;

The bolt forming hole opened in the bearing formation includes a fixed section and a sediment section, and the sediment section is arranged below the fixed section for receiving sediment;

The anti-floating anchor includes a grouting pipe, an anchor main reinforcement and at least one reinforcement support;

A plurality of anchor rod main tendons are fixedly arranged on the outside of the grouting pipe, and one end of the anchor rod main tendons is inserted into the fixed section to form an external section exposing the fixed section;

The reinforcement bracket is fixedly connected with the main reinforcement of the anchor rod at the outer section, and the reinforcement bracket is used to prevent the main reinforcement of the anchor rod from entering the sediment section.

In one embodiment of the present invention, the load-bearing formation has a blocking surface, and the bolt forming hole extends downward from the blocking surface, and the blocking surface is used to contact with the steel support to prevent the The reinforcing steel support moves to the depth direction of the hole formed by the anchor rod.

In one embodiment of the present invention, it further includes an isolating ring, the isolating ring is arranged between the main tendons of the plurality of anchor rods, and is used for isolating the adjacent anti-floating anchor rods.

In one embodiment of the present invention, the surface layer of the bearing formation is further provided with a cushion layer.

In an embodiment of the present invention, the end of the fixed section away from the sediment section forms a waterproof groove on the bearing formation.

In one embodiment of the present invention, there are three main tendons of the anchor rod, and the three main tendons of the anchor rod are evenly distributed on the outside of the grouting pipe.

A kind of anti-floating anchor construction method is characterized in that, using above-mentioned anti-floating anchor construction structure, comprises steps:

a. According to the length of the anti-floating anchor rod, increase 10-30cm as the preset depth of the hole forming of the anchor rod;

b. Drilling the anchor rod to form a hole according to the preset depth, and cleaning the anchor rod to form a hole;

c. fixing the main reinforcement of the anchor rod and the grouting pipe;

d. Welding the reinforcement bracket on the main reinforcement of the anchor rod, the reinforcement bracket is vertically arranged with the main reinforcement of the anchor rod;

e. inserting the anti-floating anchor until the steel support contacts the bearing formation surface;

f. Injecting cement slurry into the hole formed by the anchor rod through the grouting pipe.

The beneficial effects of the present invention are: the anti-floating anchor construction structure and the anti-floating anchor construction method provided by the present invention can effectively solve the impact of a certain amount of bottom sediment and water at the bottom of the hole on the quality, and improve the construction efficiency. Avoid the construction of anti-floating anchor rods often accompanied by groundwater, which is prone to collapse after the hole is formed. At the same time, it can prevent the loosening of the soil at the hole and the soil falling into the hole, and the underground and surface water flowing into the bottom of the hole and other small accidents that reduce the effect of the anti-floating anchor rod.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the anti-floating anchor construction structure in the prior art;

Fig. 2 is the schematic diagram of the anchor section of the anti-floating anchor construction structure in the prior art;

Fig. 3 is a structural schematic diagram of the anti-floating anchor construction structure provided by the embodiment of the present invention;

Fig. 4 is a schematic cross-sectional diagram of the anchor rod construction structure of the anti-floating anchor rod provided by the embodiment of the present invention.

Icon: 001-Anti-floating anchor construction structure; 100-Anti-floating anchor hole; 200-Anti-floating anchor; 110-Fixed section; 130-Sediment section; 210-Grouting pipe; Bracket; 270-isolating ring; 300-bearing formation; 301-blocking surface; 400-cushion; 310-waterproof groove.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying No device or element must have a particular orientation, be constructed, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature above or below the second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but is through additional feature contacts between them. Moreover, the first feature on, above and above the second feature includes the first feature directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature being below, below and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Embodiment one

This embodiment provides an anti-floating anchor construction structure 001, please refer to Figure 3 and Figure 4, this anti-floating anchor construction structure 001 includes an anchor hole 100 and an anti-floating anchor 200;

The bolt forming hole 100 opened in the bearing formation 300 includes a fixed section 110 and a sediment section 130, and the sediment section 130 is arranged below the fixed section 110 for receiving sediment;

The anti-floating anchor 200 includes a grouting pipe 210, an anchor main reinforcement 230 and at least one reinforcement support 250;

A plurality of anchor rod main ribs 230 are fixedly arranged on the outside of the grouting pipe 210, and one end of the anchor rod main ribs 230 is inserted into the fixed section 110 to form an external section exposing the fixed section 110;

The steel bar support 250 is fixedly connected with the anchor rod main reinforcement 230 at the outer section, and the steel bar support 250 is used to prevent the anchor rod main reinforcement 230 from entering the sediment section 130 .

Through the setting of the sediment section 130, the process of clearing holes can be reduced during construction, and the construction quality and construction progress can be improved. Because the anti-floating anchor 200 is the common pull-out force generated by the action of the anchor reinforcement through the cement mortar or fine stone concrete and the soil, Instead of downward pressure, the sediment section 130 does not affect its force.

In this embodiment, the anti-floating anchor 200 further includes an isolation ring 270 , and the isolation ring 270 is arranged between a plurality of main tendons 230 of the anchor for isolating adjacent anti-floating anchors 200 .

Specifically, the load-bearing formation 300 has a blocking surface 301 from which the bolt forming hole 100 extends downward. move

In this embodiment, a cushion layer 400 is provided on the surface of the load-bearing formation 300, and the cushion layer 400 provides a foundation for subsequent waterproof construction.

In this embodiment, the end of the fixed section 110 away from the sediment section 130 forms a waterproof groove 310 on the bearing formation 300 .

In this embodiment, there are three anchor rod main ribs 230 , and the three anchor rod main ribs 230 are evenly distributed on the outside of the grouting pipe 210 .

The anti-floating bolt construction structure 001 provided by the present invention can effectively solve the impact of a certain amount of sediment and accumulated water at the bottom of the hole on the quality, and improve the construction efficiency. Avoid the construction of anti-floating anchor rod 200, which is often accompanied by groundwater, and the hole is prone to collapse after the hole is formed. Simultaneously, it can prevent the soil from loosening in the hole from easily dropping soil in the hole, and the small accidents that reduce the effect of the anti-floating anchor rod 200 such as underground and surface water flowing into the bottom of the hole.

Embodiment two

This embodiment provides an anti-floating anchor construction method, please refer to Figure 3 and Figure 4, this anti-floating anchor construction method uses the anti-floating anchor construction structure 001 provided in the first embodiment, including steps:

a. Increase the length of the anti-floating anchor 200 by 10-30cm as the preset depth of the anchor hole 100; the specific increased depth is determined according to the local soil quality and groundwater conditions, mainly because it can carry enough accumulated soil and water, Avoid affecting the insertion depth of the subsequent anti-floating anchor rod 200 .

b. Drill and set the anchor rod to form a hole 100 according to the preset depth, and clean the anchor rod to form a hole 100;

c. Fix the anchor rod main reinforcement 230 on the outer periphery of the grouting pipe 210, and isolate two adjacent anchor rod main reinforcements 230 through the isolation ring 270;

d. Weld the steel bar support 250 on the anchor rod main reinforcement 230, and the steel bar support 250 is vertically arranged with the anchor rod main reinforcement 230;

e. Insert the anti-floating anchor rod 200 until the reinforcement support 250 touches the blocking surface 301;

f. Inject cement slurry into the bolt forming hole 100 through the grouting pipe 210, and cure and dry the cement slurry to completely fix the anti-floating bolt 200;

g. Remove the reinforcement support 250 and start construction of the cushion 400 .

The anti-floating bolt construction method provided by the invention can effectively solve the influence of a certain amount of bottom sediment and accumulated water at the bottom of the hole on the quality, and improve the construction efficiency. Avoid the construction of anti-floating anchor rod 200, which is often accompanied by groundwater, and the hole is prone to collapse after the hole is formed. Simultaneously, it can prevent the soil from loosening in the hole from easily dropping soil in the hole, and the small accidents that reduce the effect of the anti-floating anchor rod 200 such as underground and surface water flowing into the bottom of the hole.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. An anti-floating anchor construction structure is characterized in that, comprising an anchor hole forming and an anti-floating anchor; The bolt forming hole opened in the bearing formation includes a fixed section and a sediment section, and the sediment section is arranged below the fixed section for receiving sediment; The anti-floating anchor includes a grouting pipe, an anchor main reinforcement and at least one reinforcement support; A plurality of anchor rod main tendons are fixedly arranged on the outside of the grouting pipe, and one end of the anchor rod main tendons is inserted into the fixed section to form an external section exposing the fixed section; The reinforcement bracket is fixedly connected with the main reinforcement of the anchor rod at the outer section, and the reinforcement bracket is used to prevent the main reinforcement of the anchor rod from entering the sediment section. 2. The anti-floating bolt construction structure according to claim 1, characterized in that, the load-bearing stratum has a blocking surface, and the bolt forming hole extends downward from the blocking surface, and the blocking surface is used to communicate with the blocking surface. The steel bar support contacts to prevent the steel bar support from moving to the depth direction of the hole formed by the anchor rod. 3. The anti-floating anchor construction structure according to claim 1, characterized in that, it also includes an isolating ring, and the isolating ring is arranged between a plurality of said anchor rod main reinforcements for isolating adjacent said anti-floating bolts. Anchor. 4. The anti-floating anchor construction structure according to claim 1, characterized in that, the surface layer of the load-bearing formation is also provided with a cushion. 5. The anti-floating anchor construction structure according to claim 1, characterized in that, the end of the fixed section away from the sediment section forms a waterproof groove on the load-bearing formation. 6. The anti-floating anchor construction structure according to claim 1, characterized in that there are three main anchor bars, and the three anchor bars are evenly distributed on the outside of the grouting pipe. 7. An anti-floating anchor construction method, characterized in that, using the anti-floating anchor construction structure as claimed in any one of claims 1-6, comprising the steps of: a. According to the length of the anti-floating anchor rod, increase 10-30cm as the preset depth of the hole forming of the anchor rod; b. Drilling the anchor rod to form a hole according to the preset depth, and cleaning the anchor rod to form a hole; c. fixing the main reinforcement of the anchor rod and the grouting pipe; d. Welding the reinforcement bracket on the main reinforcement of the anchor rod, the reinforcement bracket is vertically arranged with the main reinforcement of the anchor rod; e. inserting the anti-floating anchor until the steel support contacts the bearing formation surface; f. Injecting cement slurry into the hole formed by the anchor rod through the grouting pipe.