阅读说明：本技术 可衡量地基中挤土程度的应力释放孔及其施工方法 (Stress release hole capable of measuring soil squeezing degree in foundation and construction method thereof ) 是由 齐昌广 于 2020-05-29 设计创作，主要内容包括：本发明涉及可衡量地基中挤土程度的应力释放孔,包括应力释放孔施工区域、应力释放孔、导腔孔、受力腔孔、不透水腔膜、钢丝竹笼、支挡杆、刻度尺、封闭盖、泥浆、浮体、固定挂耳、钢护筒、通尺孔、竹片和钢丝箍；所述应力释放孔设置在应力释放孔施工区域,应力释放孔主要是由上部的导腔孔和下部的受力腔孔组成的；所述导腔孔设置钢护筒,所述钢护筒高出应力释放孔施工区域地面,钢护筒外侧筒壁上设置固定挂耳；所述受力腔孔设置钢丝竹笼,所述钢丝竹笼由竹片和钢丝箍绑扎而成。本发明的有益效果是：本发明采用的泥浆浮体刻度尺,有助于工程人员定量了解地基中应力变化大小程度与挤土程度,进而可对部分工程中可能遇到的风险进行提前预警。(The invention relates to a stress release hole capable of measuring soil squeezing degree in a foundation, which comprises a stress release hole construction area, a stress release hole, a guide cavity hole, a stressed cavity hole, a waterproof cavity film, a steel wire bamboo cage, a supporting and blocking rod, a graduated scale, a closed cover, slurry, a floating body, a fixing lug, a steel protecting cylinder, a through rule hole, a bamboo sheet and a steel wire hoop; the stress release hole is arranged in a stress release hole construction area and mainly consists of an upper guide cavity hole and a lower stress cavity hole; the guide cavity hole is provided with a steel casing which is higher than the ground of a construction area of the stress release hole, and the wall of the outer side of the steel casing is provided with a fixed hanging lug; the stress cavity hole is provided with a steel wire bamboo cage which is formed by binding bamboo chips and a steel wire hoop. The invention has the beneficial effects that: the mud floating body graduated scale is beneficial to engineering personnel to quantitatively know the stress change degree and the soil squeezing degree in the foundation, and further can early warn risks possibly encountered in part of engineering.)

1. A stress release hole capable of measuring soil squeezing degree in a foundation is characterized in that: the device comprises a stress release hole construction area (1), a stress release hole (2), a guide cavity hole (3), a stress cavity hole (4), a waterproof cavity membrane (5), a steel wire bamboo cage (6), a supporting and blocking rod (7), a graduated scale (8), a closed cover (9), slurry (10), a floating body (11), a fixing hanger (12), a steel protective cylinder (13), a through ruler hole (14), a bamboo sheet (15) and a steel wire hoop (16); the stress release hole (2) is arranged in the stress release hole construction area (1), and the stress release hole (2) mainly comprises an upper guide cavity hole (3) and a lower stressed cavity hole (4); the guide cavity hole (3) is provided with a steel casing (13), the steel casing (13) is higher than the ground of the stress release hole construction area (2), and the outer side cylinder wall of the steel casing (13) is provided with a fixed hanging lug (12); the stress cavity hole (4) is provided with a steel wire bamboo cage (6), and the steel wire bamboo cage (6) is formed by binding bamboo chips (15) and a steel wire hoop (16); the bottom of the impermeable cavity membrane (5) is arranged at the bottom end of the steel wire bamboo cage (6), the top of the impermeable cavity membrane (5) is arranged on the fixed hanging lug (12), the slurry (10) is arranged in the impermeable cavity membrane (5), the floating body (11) is arranged on the slurry (10), the floating body (11) is provided with a graduated scale (8), the closed cover (9) is arranged at the orifice of the stress release hole (2), the through scale hole (14) is arranged at the center of the closed cover (9), the graduated scale (8) exceeds the orifice of the stress release hole (2) through the through scale hole (14), and the support and stop rod (7) is arranged at the top end of the graduated scale (8).

2. The stress relief hole for measuring the degree of squeezing soil in a foundation according to claim 1, wherein: the impervious cavity film (5) is formed by mutually bonding outer non-woven fabrics, a middle impervious film and inner non-woven fabrics.

3. The stress relief hole for measuring the degree of squeezing soil in a foundation according to claim 1, wherein: the bottom of the graduated scale (8) is fixed on the upper part of the floating body (11) through a bolt, and the top of the graduated scale (8) is bolted with a supporting and blocking rod (7).

4. The method for constructing the stress release hole capable of measuring the soil squeezing degree in the foundation according to claim 1, is characterized by comprising the following steps:

1) manufacturing a waterproof cavity membrane (5) with corresponding size according to the depth and the diameter of the stress release holes (2), wherein the structure is divided into three layers and formed by mutually bonding outer non-woven fabrics, a middle waterproof membrane and inner non-woven fabrics;

2) preparing and preparing a floating body (11), a graduated scale (8) and a closing cover (9): the bottom of the graduated scale (8) is fixed on the upper part of the floating body (11) by using a bolt, the top of the graduated scale (8) is bolted with a support stop rod (7) or a lengthened graduated scale, and the center of the closed cover (9) is provided with a through scale hole (14) matched with the graduated scale (8);

3) manufacturing steel wire bamboo cages (6) with corresponding sizes according to the depth and the diameter of the stress cavity hole (4), wherein the outer diameter of each steel wire bamboo cage is smaller than the diameter of the stress cavity hole (4), selecting processed bamboo chips (15) and steel wire hoops (16) for binding, and manufacturing a corresponding number of steel wire bamboo cages (6) in advance according to the number of designed stress release holes (2);

4) excavating a stress release hole (2) in a stress release hole construction area (1), firstly excavating a steel casing (13) for drilling and excavating a guide cavity hole (3), then continuing to perform downward construction, and excavating a stress cavity hole (4) until the design depth;

5) the periphery of the outer side of the steel casing (13) is welded and fixed with a hanging lug (12), the bottom of the impervious cavity membrane (5) is fixed at the bottom end of the steel wire bamboo cage (6) through a rope, then the steel wire bamboo cage (6) is lowered to the bottom of the stress cavity hole (4), the upper end of the steel wire bamboo cage (6) reaches the height of the cavity guide hole (3), the top of the impervious cavity membrane (5) is fixed on the fixing hanging lug (12) through the rope, finally, slurry (10) is injected into the impervious cavity membrane (5), and the liquid level of the slurry (10) reaches the middle position in the cavity guide hole (3);

6) the bottom of the graduated scale (8) is fixed on the upper part of the floating body (11) by using a bolt in advance, then the graduated scale is placed on the liquid level of slurry (10), a sealing cover (9) passes through the graduated scale (8) and then seals the stress release hole (2), and a supporting rod (7) is bolted to the top of the graduated scale (8), so that the construction operation of the stress release hole capable of measuring the soil squeezing degree in the foundation is completed;

7) and repeating the steps 4) -6), and finishing the construction operation of all the stress release holes in the stress release hole construction area in sequence.

Technical Field

The invention relates to a stress release hole, in particular to a stress release hole capable of measuring the soil squeezing degree in a foundation and a construction method thereof.

Background

With the continuous development of traffic bridges and urban construction, pile foundations become a widely used foundation form. The pile foundation has the advantages of practicality, reliability, simple and convenient construction and the like, but a large-scale pile driving machine is needed when the pile foundation is constructed, and the soil squeezing effect is often generated in the pile sinking process. In order to ensure that buildings, roads and the like around the engineering are not damaged in the pile sinking process, it is a common method for effectively reducing the soil compaction effect to provide stress release holes around the engineering. The traditional stress release hole often collapses or the surrounding soil body enters the hole due to vibration and disturbance generated in the engineering construction process, and even the hole opening is covered; and the stress change and the soil extrusion degree in the foundation can be simply and qualitatively known.

Therefore, there is a need for a stress release hole and a construction method thereof, which can be used to measure the soil squeezing degree of a foundation, and which is simple, safe, reliable, and quantitative in construction.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a stress release hole capable of measuring the soil squeezing degree in a foundation and a construction method thereof.

The stress release hole capable of measuring the soil squeezing degree in the foundation comprises a stress release hole construction area, a stress release hole, a guide cavity hole, a stress cavity hole, a waterproof cavity film, a steel wire bamboo cage, a supporting and blocking rod, a graduated scale, a closed cover, slurry, a floating body, a fixing lug, a steel protecting cylinder, a through rule hole, a bamboo sheet and a steel wire hoop; the stress release hole is arranged in a stress release hole construction area and mainly consists of an upper guide cavity hole and a lower stress cavity hole; the guide cavity hole is provided with a steel casing which is higher than the ground of a construction area of the stress release hole, and the wall of the outer side of the steel casing is provided with a fixed hanging lug; the stress cavity hole is provided with a steel wire bamboo cage which is formed by binding bamboo chips and a steel wire hoop; the bottom of the impervious cavity membrane is arranged at the bottom end of the steel wire bamboo cage, the top of the impervious cavity membrane is arranged on the fixing hanging lug, the slurry is arranged in the impervious cavity membrane, the floating body is arranged on the slurry, the dividing ruler is arranged on the floating body, the closed cover is arranged at the orifice of the stress release hole, the through ruler hole is arranged at the center of the closed cover, the dividing ruler exceeds the orifice of the stress release hole through the through ruler hole, and the support and stop rod is arranged at the top end of the dividing ruler.

Preferably, the method comprises the following steps: the impervious cavity membrane is formed by mutually bonding outer non-woven fabrics, a middle impervious membrane and inner non-woven fabrics.

Preferably, the method comprises the following steps: the bottom of the graduated scale is fixed on the upper part of the floating body through a bolt, and the top of the graduated scale is bolted with a supporting and blocking rod.

The construction method of the stress release hole capable of measuring the soil squeezing degree in the foundation comprises the following steps:

1) manufacturing a waterproof cavity film with corresponding size according to the depth and the diameter of the stress release hole, wherein the structure is divided into three layers, namely an outer non-woven fabric, a middle waterproof film and an inner non-woven fabric which are bonded with each other;

2) making and preparing a floating body, a graduated scale and a sealing cover: the bottom of the graduated scale is fixed on the upper part of the floating body by using a bolt, the top of the graduated scale is bolted with a support rod or a lengthened graduated scale, and the center of the sealing cover is provided with a through scale hole matched with the graduated scale;

3) manufacturing steel wire bamboo cages with corresponding sizes according to the depth and the diameter of the stress cavity hole, wherein the outer diameter of the steel wire bamboo cages is smaller than the diameter of the stress cavity hole, selecting processed bamboo chips and steel wire hoops for binding, and manufacturing a corresponding number of steel wire bamboo cages in advance according to the number of designed stress release holes;

4) excavating a stress release hole in a stress release hole construction area, firstly drilling a steel casing for drilling and excavating a guide cavity hole, then continuing to perform downward construction, and drilling and excavating a stress cavity hole to a designed depth;

5) welding and fixing a hanging lug on the periphery of the outer side of the steel protective cylinder, fixing the bottom of the impervious cavity membrane at the bottom end of the steel wire bamboo cage by using a rope, then lowering the steel wire bamboo cage to the bottom of the stressed cavity hole, enabling the upper end of the steel wire bamboo cage to reach the height of the guide cavity hole, fixing the top of the impervious cavity membrane on the fixing hanging lug by using the rope, finally injecting slurry into the impervious cavity membrane, and enabling the liquid level of the slurry to reach the middle position in the guide cavity hole;

6) the bottom of the graduated scale is fixed on the upper part of the floating body by using a bolt in advance, then the graduated scale is placed on the slurry level, the sealing cover passes through the graduated scale and then seals the stress release hole, and the top of the graduated scale is bolted with a supporting and blocking rod to complete the construction operation of the stress release hole capable of measuring the soil squeezing degree in the foundation;

7) and repeating the steps 4) -6), and finishing the construction operation of all the stress release holes in the stress release hole construction area in sequence.

The invention has the beneficial effects that:

1. the mud floating body graduated scale is beneficial to engineering personnel to quantitatively know the stress change degree and the soil squeezing degree in the foundation, and further can early warn risks possibly encountered in part of engineering.

2. The steel casing guide cavity hole with the sealing cover is not only beneficial to the construction of the stress release hole, but also effectively prevents the orifice from collapsing and the surface soil from falling off and prevents the orifice from being covered.

3. The steel wire bamboo cage and the impervious cavity membrane adopted by the invention have the advantages of low cost, simple manufacture and convenient placement.

Drawings

FIG. 1 is a schematic view of a stress relief hole in a foundation to measure the degree of squeezing;

FIG. 2 is a top view of the closure;

FIG. 3 is a top view of the steel casing;

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a schematic view of a float scale;

fig. 6 is a schematic view of a steel bamboo cage.

Description of reference numerals: 1-stress relief hole construction area; 2-a stress release hole; 3-guide cavity hole; 4-stress cavity hole; 5-impermeable Cavity film; 6-steel wire bamboo cage; 7-a stop lever; 8-graduated scale; 9-a closure cap; 10-slurry; 11-a float; 12-fixed hangers; 13-steel casing; 14-through ruler hole; 15-bamboo chips; and 16-steel wire hoop.

Detailed Description

The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

The stress release hole capable of measuring the soil squeezing degree in the foundation comprises a stress release hole construction area 1, a stress release hole 2, a guide cavity hole 3, a stress cavity hole 4, a waterproof cavity film 5, a steel wire bamboo cage 6, a supporting and blocking rod 7, a graduated scale 8, a closed cover 9, slurry 10, a floating body 11, a fixed hanging lug 12, a steel protecting cylinder 13, a through rule hole 14, a bamboo sheet 15 and a steel wire hoop 16; the stress release hole 2 is arranged in a stress release hole construction area 1 and consists of an upper stress release hole 3 and a lower stress cavity hole 4, the stress release hole 3 is provided with a steel protective cylinder 13, the steel protective cylinder 13 is higher than the ground of the stress release hole construction area 2, the outer side cylinder wall is provided with a fixed hanging lug 12, the stress cavity hole 4 is provided with a steel wire bamboo cage 6, the steel wire bamboo cage 6 is formed by binding bamboo sheets 15 and steel wire hoops 16, the bottom of the impervious cavity membrane 5 is arranged at the bottom end of the steel wire bamboo cage 6, the top of the impervious cavity membrane 5 is arranged on the fixed hanging lug 12, the slurry 10 is arranged in the impervious cavity membrane 5, the floating body 11 is arranged on the slurry 10, the floating body 11 is provided with a graduated scale 8, the closed cover 9 is arranged at the orifice of the stress release hole 2, the graduated scale hole 14 is arranged at the center of the closed cover 9, the graduated scale 8 exceeds the orifice of the stress release hole 2 through the graduated scale hole 14, the support stop lever 7 is arranged at the top end of the graduated scale 8.

The impervious cavity membrane 5 is formed by mutually bonding outer non-woven fabrics, a middle impervious membrane and inner non-woven fabrics.

The construction method of the stress release hole capable of measuring the soil squeezing degree in the foundation comprises the following steps:

1) manufacturing a waterproof cavity membrane 5 with a corresponding size according to the depth and the diameter of the stress release holes 2, wherein the structure is formed by bonding outer non-woven fabrics, a middle waterproof membrane and inner non-woven fabrics in three layers;

2) as shown in fig. 2 and 5, the floating body 11, the scale 8 and the closing cover 9 are manufactured and prepared: the bottom of the graduated scale 8 can be fixed on the upper part of the floating body 11 by using bolts, the top of the graduated scale 8 can be bolted with a supporting stop rod 7 or an elongated graduated scale, and the center of the sealing cover 9 is provided with a through scale hole 14 matched with the graduated scale 8;

3) as shown in fig. 6, the steel wire bamboo cages 6 with corresponding sizes are manufactured according to the depth and the diameter of the stress cavity hole 4, the outer diameter of each steel wire bamboo cage 6 is slightly smaller than the diameter of the stress cavity hole 4, processed bamboo chips 15 and steel wire hoops 16 are selected for binding, and the steel wire bamboo cages 6 with corresponding numbers are manufactured in advance according to the number of designed stress release holes 2;

4) as shown in fig. 1, a stress release hole 2 is dug in a stress release hole construction area 1, a steel casing 13 is firstly dug to drill a guide cavity hole 3, then downward construction is continued, and a stress cavity hole 4 is drilled until the design depth is reached;

5) as shown in fig. 1, 3 and 4, a hanging lug 12 is welded and fixed on the periphery of the outer side of a steel casing 13, the bottom of a water-impermeable cavity membrane 5 is fixed at the bottom end of a steel wire bamboo cage 6 by a rope, then the steel wire bamboo cage 6 is lowered to the bottom of a stress cavity hole 4, the upper end of the steel wire bamboo cage 6 reaches the height of a cavity guiding hole 3, the top of the water-impermeable cavity membrane 5 is fixed on the fixing hanging lug 12 by the rope, and finally slurry 10 is injected into the water-impermeable cavity membrane 5, wherein the liquid level of the slurry 10 is about the middle position in the cavity guiding hole 3;

6) as shown in fig. 1, the bottom of a graduated scale 8 is fixed on the upper part of a floating body 11 by using bolts in advance, then the graduated scale is placed on the liquid level of slurry 10, a sealing cover 9 passes through the graduated scale 8 and then seals a stress release hole 2, and a supporting rod 7 is bolted to the top of the graduated scale 8, so that the construction operation of the stress release hole capable of measuring the soil squeezing degree in the foundation is completed;

7) and repeating the steps 4) -6), and finishing the construction operation of all the stress release holes in the stress release hole construction area in sequence.