CN104790413B - A kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof - Google Patents
A kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof Download PDFInfo
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- CN104790413B CN104790413B CN201510192475.XA CN201510192475A CN104790413B CN 104790413 B CN104790413 B CN 104790413B CN 201510192475 A CN201510192475 A CN 201510192475A CN 104790413 B CN104790413 B CN 104790413B
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- plectane
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses and a kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof, device includes anchor pole, the first plectane, the second plectane, high strong spring, the first described plectane and the second plectane are enclosed within anchor pole, it is provided with high strong spring between the first described plectane and the second plectane, the first described plectane is provided with nut, and described nut fixed cover is on anchor pole.By the device of self-pressurization, solving the problem that swelled ground moat slope tends to unstable under atmospheric action, it is adaptable to various types of swelled grounds, arrangement form is simple simultaneously, and constructing operation is easy it can also be used to provisional protection, and its future in engineering applications is wide.The mechanism of action of preventer meets the working law on swelled ground moat slope, has taken into full account swelled ground engineering characteristic in protection Design；Efficiency of construction is high, flexible arrangement, is suitable for various soil layers；Material can select metal material, it is possible to using the material such as bamboo or timber according to guard time length, effect on environment is little.
Description
Technical field
The present invention relates to the construction technology in field of civil engineering, be mainly used in In Slope Engineering Design and construction, particularly
A kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof.
Background technology
Along with socioeconomic development, a large amount of highway in swelled ground area, railway and the operation of hydraulic engineering or put into operation,
And the process of construction of swelled ground area urbanization, create substantial amounts of swelled ground moat slope.The forming process on swelled ground moat slope, be
The result of mankind's nature remodeling, this usually can destroy the original steady statue of natural material, hide some dangers for for slope body catastrophe.Air
Under the influence of, along with evaporation and rainfall cause the number of times of drying and watering cycle and amplitude to increase, swelled ground repeated expansion and shrinkage makes the soil body produce
Crisscross crack, the soil body becomes loose, and intensity reduces, and adds weathering, destroys the integrity of the soil body further, make
Swelled ground moat slope tends to unstable, and then causes destroying.When swelled ground bears upper pressure, the soil body that drying and watering cycle causes is swollen
Compression deformation can be greatly reduced, and the dry density of the soil body and Crack change can be effectively suppressed, and the attenuation amplitude of soil strength is big
Big reduction.So, use the self-pressurization preventer and method thereof maintaining swelled ground moat slope stable, can effectively maintain swelled ground strong
Degree, it is ensured that moat slope stability, and construction method is easy, efficiency is high, and arrangement is flexible, it is possible to decrease engineering cost, and expanding should
Use scope.
Summary of the invention
1. to solve the technical problem that
For problems of the prior art, the invention provides a kind of simple in construction, be easy to execute-in-place, engineering is made
Valency is cheap, meet swelled ground engineering characteristic maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof.
2. technical scheme
The purpose of the present invention is achieved through the following technical solutions.
A kind of self-pressurization preventer maintaining swelled ground moat slope stable, including anchor pole, the first plectane, the second plectane, height
Strong spring, the first described plectane and the second plectane are enclosed within anchor pole, are provided with height between the first described plectane and the second plectane
Strong spring, the first described plectane is provided with nut, and described nut fixed cover is on anchor pole.
The first described plectane diameter is less than the second plectane diameter.
Described anchor pole embedded depth is the 1.5-2 times of air dramatic impact degree of depth.
The first described plectane and the spacing of the second plectane are 0.2-0.5m.
A kind of self-pressurization means of defence maintaining swelled ground moat slope stable, it is characterised in that step includes:
Step 1) field investigation and sampling, carry out dilatancy test, by laboratory test determine soil sample overlying 0kPa, 12.5kPa,
Soil sample dilatancy amount when 25kPa, 50kPa and 100kPa, conversing dilatancy amount by interpolation is overlying pressure when zero
Stress δ；
Step 2) by overlying compressive stress δ, the second plectane area A and the deformation coefficient k of high strong spring, converse spring
Deflection s=(δ A)/k；
Step 3) judge soil body air dramatic impact degree of depth d according to Technical code for buildings in swelling soil zone；
Step 4) according to air dramatic impact degree of depth d, it is considered to soil body anchor force F=1.2 δ A, the test anchorage zone soil body
Intensive parameter c, φ, anchor pole coefficientoffrictionμ, converse anchor pole need to be deep into below the air dramatic impact degree of depth according to specification
Length l；
Step 5) according to anchor pole need to be deep into length l of below the air dramatic impact degree of depth, air dramatic impact degree of depth d,
Spring deflection s and self-pressurization device length m, determine self-pressurization device anchor pole total length L=l+d+m-s；
Step 6) the self-pressurization device of different combinations it is driven into by the mode of hammering, anchor pole embedded depth is D=l+d.
3. beneficial effect
Compared to prior art, it is an advantage of the current invention that:
By the device of self-pressurization, solve the problem that swelled ground moat slope tends to unstable under atmospheric action, it is adaptable to
Various types of swelled grounds, arrangement form is simple simultaneously, and constructing operation is easy it can also be used to provisional protection, before its engineer applied
Scape is wide.The mechanism of action of preventer meets the working law on swelled ground moat slope, has taken into full account swelled ground in protection Design
Engineering characteristic；Efficiency of construction is high, flexible arrangement, is suitable for various soil layers；Material can select metal material, it is possible to during according to protection
Between length use the material such as bamboo or timber, effect on environment is little.
Accompanying drawing explanation
Fig. 1 is single spring structure schematic diagram of the present invention.
Fig. 2 is Fig. 1 spring position schematic diagram.
Fig. 3 is the present invention many groups spring schematic diagram.
Fig. 4 is Fig. 3 spring position schematic diagram.
Fig. 5 is scheme of installation of the present invention.
Fig. 6 is the present invention domatic layout schematic diagram.
Fig. 7 is packet type schematic diagram of the present invention.
In figure: 1, anchor pole the 2, first plectane the 3, second plectane 4, high strong spring 5, nut.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
The invention belongs to swelled ground moat slope engineering protection new equipment and new method, for the catastrophe characteristic on swelled ground moat slope,
Design self-pressurization device, breathing under atmospheric action can be stoped to circulate the swelled ground strength retrogression caused, maintain swelled ground strong
Degree, so that it is guaranteed that stablizing of swelled ground moat slope, plays the effect of moat slope protection.Change pressure and the coverage of self-pressurization, adopt
With different materials, reliable swelled ground moat slope protection system can be formed, it is adaptable to the swelled ground moat slope of different swell-shrink characteristics.
The present invention combines the evolutionary process of swelled ground moat slope catastrophe, uses self-pressurization device, it is possible to combine bamboo or wooden
Deng material, utilize the pressure of self-pressurization, stop swelled ground breathing to circulate the strength retrogression caused, thus maintain moat slope stable, for
The Green Protection on moat slope, swelled ground area is prevented for theoretical foundation and technical support, the special soils side slope being alternatively other area simultaneously
Offer beneficial reference is provided.The method can reduce the cost of moat slope protection works, it is adaptable to various soil layers, and its future in engineering applications is wide
Wealthy.
Embodiment 1
As depicted in figs. 1 and 2, a kind of self-pressurization preventer maintaining swelled ground moat slope stable, including anchor pole 1, first
Plectane the 2, second plectane 3, high strong spring 4, the first described plectane 2 and the second plectane 3 be enclosed within anchor pole 1, the first described circle
Being provided with single high strong spring 4 between plate 2 and the second plectane 3, the first described plectane 2 is provided with nut 5, and described nut 5 is solid
Surely it is enclosed within anchor pole 1.The first described plectane 2 diameter is less than the second plectane 3 diameter.The first described plectane 2 and the second plectane 3
Spacing be 0.2-0.5m.
As it is shown in figure 5, described anchor pole 1 embedded depth is the 1.5-2 times of air dramatic impact degree of depth.
Embodiment 2
As shown in Figure 3 and Figure 4, a kind of self-pressurization preventer maintaining swelled ground moat slope stable, including anchor pole 1, first
Plectane the 2, second plectane 3, high strong spring 4, the first described plectane 2 and the second plectane 3 be enclosed within anchor pole 1, the first described circle
Being provided with three high strong springs 4 between plate 2 and the second plectane 3, the first described plectane 2 is provided with nut 5, and described nut 5 is solid
Surely it is enclosed within anchor pole 1.The first described plectane 2 diameter is less than the second plectane 3 diameter.The first described plectane 2 and the second plectane 3
Spacing be 0.2-0.5m.
As it is shown in figure 5, described anchor pole 1 embedded depth is the 1.5-2 times of air dramatic impact degree of depth.
A kind of self-pressurization means of defence maintaining swelled ground moat slope stable, it is characterised in that step includes:
Step 1) field investigation and sampling, carry out dilatancy test, by laboratory test determine soil sample overlying 0kPa, 12.5kPa,
Soil sample dilatancy amount when 25kPa, 50kPa and 100kPa, conversing dilatancy amount by interpolation is overlying pressure when zero
Stress δ；
Step 2) by overlying compressive stress δ, the second plectane 3 area A and the deformation coefficient k of high strong spring 4, converse spring
Deflection s=(δ A)/k；
Step 3) judge soil body air dramatic impact degree of depth d according to Technical code for buildings in swelling soil zone；
Step 4) according to air dramatic impact degree of depth d, it is considered to soil body anchor force F=1.2 δ A, the test anchorage zone soil body
Intensive parameter c, φ, anchor pole 1 coefficientoffrictionμ, converse anchor pole 1 need to be deep into below the air dramatic impact degree of depth according to specification
Length l；
Step 5) according to anchor pole 1 need to be deep into length l of below the air dramatic impact degree of depth, air dramatic impact degree of depth d,
High strong spring 4 deflection s and self-pressurization device length m, determine self-pressurization device anchor pole 1 total length L=l+d+m-s；
Step 6) the self-pressurization device of different combinations it is driven into by the mode of hammering, anchor pole 1 embedded depth is D=l+d,
Domatic layout is as shown in Figure 6.
This device is by being driven into anchor pole 1 in soil, and the high strong spring 4 between the first plectane 2 and the second plectane 3 produces and becomes
Shape, produces pressure to the second plectane 3, and the big I of pressure is driven into, by controlling anchor pole 1, the camber of spring size decision that the degree of depth causes,
Pressure is delivered to swelled ground surface again by the second plectane 3, and the pressure of applying can limit the swell-shrinking deformation amount of swelled ground, maintains soil
Soma density, reduces the atmospheric action impact on swelled ground strength retrogression, thus maintains swelled ground moat slope stable.Utilization is driven into method
Construction, spring-compressed is applied to the pressure on the second plectane 3 can be by anchor pole 1 amount of being driven into manual control；On moat slope, self-pressurization is anti-
Protection unit can be arranged by the form of Flos Mume.
When the soil body tends to broken, when crack is relatively grown, can be by calculating, it is considered to uses two self-pressurization devices or three oneself
Pressue device one group, as it is shown in fig. 7, construct as above.
The air dramatic impact degree of depth:
Climate influenced layer is under natural climate effect, the factors such as rainfall, evaporation, ground temperature cause the lifting deformation of soil
Effective depth.The air dramatic impact degree of depth refers to the especially significant degree of depth of atmospheric effect, and the atmospheric effect of essentially 0.45 times is deep
Degree.Referring specifically to Technical code for buildings in swelling soil zone.
Claims (1)
1. one kind maintains the self-pressurization means of defence that swelled ground moat slope is stable, it is characterised in that step includes:
Step 1) field investigation and sampling, carry out dilatancy test, by laboratory test determine soil sample overlying 0kPa, 12.5kPa, 25
Soil sample dilatancy amount when kPa, 50 kPa and 100 kPa, conversing dilatancy amount by interpolation is overlying pressure when zero
Stress δ；
Step 2) self-pressurization preventer, including anchor pole, the first plectane, the second plectane, high strong spring, it is characterised in that described
First plectane and the second plectane are enclosed within anchor pole, are provided with high strong spring between the first described plectane and the second plectane, described
First plectane is provided with nut, and described nut fixed cover is on anchor pole, by overlying compressive stress δ, the second plectane area A and height
The deformation coefficient k of strong spring, converses deflection s=(δ the A)/k of spring；
Step 3) judges soil body air dramatic impact degree of depth d according to Technical code for buildings in swelling soil zone；
Step 4) is according to air dramatic impact degree of depth d, it is considered to soil body anchor force F=1.2 δ A, the test anchorage zone soil body strong
Degree parameter c, φ, anchor pole coefficientoffrictionμ, converse anchor pole according to specification and need to be deep into the length of below the air dramatic impact degree of depth
l；
Step 5) need to be deep into length l of below the air dramatic impact degree of depth, air dramatic impact degree of depth d, spring according to anchor pole
Deflection s and self-pressurization device length m, determine self-pressurization device anchor pole total length L=l+d+m-s；
The mode of step 6) hammering is driven into self-pressurization device, and anchor pole embedded depth is D=l+d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192475.XA CN104790413B (en) | 2015-04-21 | 2015-04-21 | A kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192475.XA CN104790413B (en) | 2015-04-21 | 2015-04-21 | A kind of maintain the stable self-pressurization preventer in swelled ground moat slope and method thereof |
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| CN104790413B true CN104790413B (en) | 2016-08-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804098B (en) * | 2016-03-31 | 2017-12-01 | 浙江大学宁波理工学院 | The pre-applied force anchor system and its construction method of slope protection device |
| CN106087626B (en) * | 2016-06-07 | 2019-07-16 | 浙江大学 | Slim hole club-footed pile counter-force loads preloading method |
| CN106087945B (en) * | 2016-06-07 | 2018-07-31 | 浙江大学 | Earth anchor and counter-force load precompressed soft foundation processing method |
| CN111088805B (en) * | 2019-12-12 | 2021-03-16 | 武汉理工大学 | Integrated assembly type supporting device and supporting method thereof |
| CN111945752B (en) * | 2020-08-18 | 2021-04-20 | 中南大学 | Frame anchor supporting construction suitable for native slope self-adaptation warp control expands |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3331097A1 (en) * | 1983-08-29 | 1985-03-14 | Hilti Ag, Schaan | Dowel which can be prestressed |
| CN2188652Y (en) * | 1994-04-07 | 1995-02-01 | 柴永模 | Anchoring-bolt |
| CN2780993Y (en) * | 2004-12-24 | 2006-05-17 | 中国科学院武汉岩土力学研究所 | Anchor bolt prestressed control device |
| CN202188929U (en) * | 2011-08-02 | 2012-04-11 | 山西潞安环保能源开发股份有限公司 | Prestressed anchor bolt device used in similitude simulation experiment |
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Effective date of registration: 20181129 Address after: 213017 Room 938, Tianning Science Promotion Center, 256 Zhulin North Road, Tianning District, Changzhou City, Jiangsu Province Patentee after: Changzhou Dongji Road International Trade Co., Ltd. Address before: 213022 Wushan Road, Xinbei District, Changzhou, Jiangsu Province, No. 1 Patentee before: Changzhou Polytechnic College |
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