CN101413273A - Method for eliminating pit buoyancy and pit structure - Google Patents
Method for eliminating pit buoyancy and pit structure Download PDFInfo
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- CN101413273A CN101413273A CNA200810306175XA CN200810306175A CN101413273A CN 101413273 A CN101413273 A CN 101413273A CN A200810306175X A CNA200810306175X A CN A200810306175XA CN 200810306175 A CN200810306175 A CN 200810306175A CN 101413273 A CN101413273 A CN 101413273A
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- melt pit
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- buoyancy
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Abstract
The invention discloses a method for eliminating pit buoyancy and a pit structure. The method is to provide spillway holes on the side wall of a pit so that ground water spills into the pit when the ground water level exceeds the spillway holes, so as to increase the sole weight of the pit and eliminate the buoyancy of the ground water to the pit. The pit structure is that one or more than one waterproof sleeve pipe is horizontally embedded on the side wall of the pit, filter screens and water check valves are arranged on the inner ports of the waterproof sleeve pipes, and filter layers are arranged in the waterproof sleeve pipes. The method can effectively reduce or completely eliminate the buoyancy generated by the ground water to the pit; the pit structure is simple and practical; the usage of construction materials can be greatly saved so that the construction cost is reduced and the material wastage is avoided. Besides, the method and the pit structure realize the real-time property and the controllability of buoyancy resistance for pit type buildings.
Description
Technical field
The inventive method relates to a kind of building melt pit, particularly relates to a kind of method and melt pit structure of eliminating melt pit buoyancy.
Background technology
Melt pit class hollow structure are a kind of underground buildings common in the industrial premises, the underground type pump house of doing commonly used.Owing to be underground hollow type structure, therefore when underground water level is more shallow, will produce big buoyancy to melt pit, if the melt pit deadweight is G, the buoyancy of water is F, and when conducting oneself with dignity G as if buoyancy F greater than melt pit, melt pit will float, when if the ascent rate at each position is inconsistent, will cause melt pit that cracking even destruction are taken place.This situation, at significantly regional show more outstanding of seasonal WATER LEVEL CHANGES, seasonal WATER LEVEL CHANGES obviously often is because this area's amount of precipitation is too concentrated, amount of precipitation in 1 year often concentrated on one month even in shorter time, dry season, groundwater table was very dark, therefore melt pit can not be subjected to buoyancy function, and groundwater table can fast rise during rainy season, and melt pit will be subjected to buoyancy.For addressing this problem, traditional processing method generally has two kinds: a kind of is simply to thicken melt pit base plate and hole wall thickness to increase dead load, i.e. G value, but certainly will cause the waste of material like this; Another kind of is exactly that it is designed to the melt pit structure that the bottom disposes the anti-floating stake.By the frictional force of anti-floating stake sidewall and soil and the anchor pulling force opposing buoyancy of anti-floating stake bottom.The quantity of material that above as can be seen two kinds of methods expend is all more, because melt pit is only occurred in rainy season by buoyancy, seasonal variations is obvious, and these expend the anti-floating facility of lot of materials or measures are idle useless in the dry season of longer time, have caused waste of material.
Summary of the invention
The objective of the invention is to, a kind of method and melt pit structure of eliminating melt pit buoyancy is provided, its method can effectively reduce or eliminate fully the buoyancy that underground water produces melt pit, its melt pit is simple and practical, can save the consumption of constructional materials greatly, reduce construction cost, avoid causing waste of material, realize the real-time and the controllability of melt pit class structure anti-floating, thereby overcome the deficiencies in the prior art.
Technical scheme of the present invention: this method is on the melt pit sidewall spillway hole to be set, and when underground water level surpasses spillway hole, underground water is overflowed in the melt pit, makes level and groundwater table in the melt pit reach balance, to eliminate the buoyancy of melt pit in the underground water.
In the method for above-mentioned elimination melt pit buoyancy, the aperture of described spillway hole is provided with filter screen, is provided with filtration beds in the hole of spillway hole, prevents that mud from entering melt pit.
In the method for aforesaid elimination melt pit buoyancy, the aperture of described spillway hole is provided with the sealing valve, so that the water level in the control melt pit.
In the method for aforesaid elimination melt pit buoyancy, establish working platform in the melt pit of described spillway hole top, to make things convenient for a kind of melt pit structure of eliminating melt pit buoyancy of personnel operation, comprise melt pit, be embedded with water string more than one or one in the sidewall horizontal of melt pit, the inner port of water string is provided with filter screen and sealing valve, is provided with filtration beds in the water string.
In the melt pit structure of above-mentioned elimination melt pit buoyancy, the diameter of described water string is 150～200mm, and the spacing between the water string more than two or two is between 2～3m.
In the melt pit structure of aforesaid elimination melt pit buoyancy, establish working platform in the melt pit of described water string top, working platform is higher than theoretical calculated equilibrium waterline 200～500mm.
In the melt pit structure of aforesaid elimination melt pit buoyancy, the center line of described water string is higher than melt pit base plate indexed plane 200～500mm.
Compared with prior art, after adopting the inventive method, the anti-floating of melt pit relies on deadweight of increase melt pit or the stake of configuration anti-floating to realize no longer simply, thereby significantly reduced material usage, reduced difficulty of construction, simultaneously, made melt pit anti-floating function realize Modulatory character, can adjust immediately according to the variation of groundwater table, very flexible convenient.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is a kind of structural representation of prior art;
Fig. 4 is the another kind of structural representation of prior art.
Being labeled as in the accompanying drawing: 1-melt pit, 2-water string, 3-filter screen, 4-sealing valve, 5-filtration beds, 6-working platform.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but not as the foundation of the present invention being done any restriction.
Embodiment.The method of elimination melt pit buoyancy of the present invention and melt pit structure are as depicted in figs. 1 and 2.This method is to open a spillway hole on melt pit, and the aperture of spillway hole is provided with filter screen, is provided with filtration beds in the hole of spillway hole, prevents that mud from entering melt pit.When underground water level surpasses spillway hole, underground water is overflowed in the melt pit, balance each other thereby the deadweight of melt pit is increased reach with the groundwater table buoyancy that brings that rises.The aperture of spillway hole is provided with the sealing valve, so that artificially control the water level in the melt pit.Establish working platform in the melt pit of spillway hole top, can be on working platform erection equipment, to make things convenient for personnel operation, operating personnel can squat and open or close the sealing valve on working platform.Or carry out the operation of other ordinary production work.
A kind of melt pit structure of eliminating melt pit buoyancy, as depicted in figs. 1 and 2.Comprise melt pit 1, the sidewall horizontal of melt pit 1 is embedded with the water string 2 more than one or, and the diameter of water string 2 is 150～200mm, and the spacing between the water string 2 more than two or two is between 2～3m.Establish working platform 6 in the melt pit 1 of water string 2 tops, working platform 6 is higher than theoretical calculated equilibrium waterline 200～500mm.The center line of water string 2 is higher than melt pit 1 base plate indexed plane 200～500mm.The inner port of water string 2 is provided with filter screen 3 and sealing valve 4, is provided with filtration beds 5 in the water string 2.
When carrying out the melt pit design, can not be subjected to buoyancy to suppose design by melt pit earlier, but should calculate melt pit according to the melt pit size is subjected to after the buoyancy to resisting the water yield that this buoyancy should add, it is theoretical balance water level height H value that this water yield is reflected on the cross section, on the basis of this theoretical level, reserve the safe distance of 500mm in addition, and the working platform of water storage type anti-floating melt pit is set at this absolute altitude place, be used for erection equipment and normal production operation work, working platform is the beam and slab type reinforced concrete structure.
Cheat pre-buried rigid waterproofing sleeve pipe and corresponding sealing valve bolt on the melt pit sidewall that the base plate height is the 40cm place in distance, the diameter of rigid casing is between 150～200mm, the level interval of rigid casing can require difference to be controlled between 2～3m according to water intake velocity, the rigid casing planted agent fills graded sand and stone, graded sand and stone is made up of rubble and thickness sand, the outer side covers metal screen, these structures can prevent to bring into when underground water from flowing into melt pit a large amount of silt particles and be deposited in and be difficult to cleaning in the water reserve, and metal screen is then installed the sealing valve outward.
The course of work of the present invention and principle:
When dry season, because groundwater table is very dark, therefore, melt pit can not be subjected to buoyancy function, and at this moment, the sealing valve on the water inlet control hole is in closed condition, and is anhydrous in the water reserve; It is very big to run into the rainy season amount of precipitation, during the groundwater table fast rise, melt pit will be subjected to buoyancy, at this moment, open the sealing valve, the outer underground water in hole just overflows in the water reserve by the inlet opening, when arriving the good predetermined water level of calculated in advance, close the sealing valve, at this moment, overflowing into underground water in the water reserve has increased the deadweight G value of melt pit, therefore can reach the buoyancy that the balance groundwater table rises and brought, finish groundwater table rainy season and fall after cheat the buoyancy disappearance gradually after rise at the end below, at this moment, use in the time of can discharging the water in the water reserve in order to next rainy season by water pump.
Promptly finished the design and construction of water storage type anti-floating melt pit by above-mentioned each step.Fig. 3 and Fig. 4 are the melt pit structure charts of prior art, and Fig. 3 simply thickeies melt pit base plate and hole wall thickness to increase dead load, i.e. G value, but certainly will cause the waste of material like this; Fig. 4 is designed to the melt pit structure that the bottom disposes the anti-floating stake with it.By the frictional force of anti-floating stake sidewall and soil and the anchor pulling force opposing buoyancy of anti-floating stake bottom.The quantity of material that above as can be seen two kinds of methods expend is all more, as seen, adopts method of the present invention economical with materials greatly, has reduced waste, and the anti-floating of melt pit can realize controllability, and melt pit anti-floating effect is obvious.
Claims (8)
- [claim 1] a kind of method of eliminating melt pit buoyancy is characterized in that: this method is on the melt pit sidewall spillway hole to be set.
- The method of [claim 2] elimination melt pit according to claim 1 buoyancy, it is characterized in that: the aperture of described spillway hole is provided with filter screen, is provided with filtration beds in the hole of spillway hole.
- The method of [claim 3] elimination melt pit according to claim 1 buoyancy, it is characterized in that: the aperture of described spillway hole is provided with the sealing valve.
- The method of [claim 4] elimination melt pit according to claim 1 buoyancy is characterized in that: be provided with working platform in the melt pit of described spillway hole top.
- [claim 5] a kind of melt pit structure of eliminating melt pit buoyancy, comprise melt pit (1), it is characterized in that: be embedded with water string (2) more than one or one in the sidewall horizontal of melt pit (1), the inner port of water string (2) is provided with filter screen (3) and sealing valve (4), is provided with filtration beds (5) in the water string (2).
- The melt pit structure of [claim 6] elimination melt pit according to claim 5 buoyancy is characterized in that: the diameter of described water string (2) is 150～200mm, and the spacing between the water string more than two or two (2) is between 2～3m.
- The melt pit structure of [claim 7] elimination melt pit according to claim 6 buoyancy is characterized in that: establish working platform (6) in the melt pit (1) of described water string (2) top, working platform (6) is higher than theoretical calculated equilibrium waterline 200～500mm.
- The melt pit structure of [claim 8] elimination melt pit according to claim 7 buoyancy is characterized in that: the center line of described water string (2) is higher than melt pit (1) base plate indexed plane 200～500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810306175XA CN101413273A (en) | 2008-12-11 | 2008-12-11 | Method for eliminating pit buoyancy and pit structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810306175XA CN101413273A (en) | 2008-12-11 | 2008-12-11 | Method for eliminating pit buoyancy and pit structure |
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| CN101413273A true CN101413273A (en) | 2009-04-22 |
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| CNA200810306175XA Pending CN101413273A (en) | 2008-12-11 | 2008-12-11 | Method for eliminating pit buoyancy and pit structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806669A (en) * | 2010-04-14 | 2010-08-18 | 同济大学 | Testing system of high-precision still water buoyancy model with underground structure |
| CN102251695A (en) * | 2011-05-26 | 2011-11-23 | 中建七局第二建筑有限公司 | Anti-floating automatic pressure relief device for pool |
| CN104975734A (en) * | 2015-05-14 | 2015-10-14 | 中国十九冶集团有限公司 | Cast pumping well sleeve installing method |
| CN106836248A (en) * | 2017-01-16 | 2017-06-13 | 中国建筑第八工程局有限公司 | The water storage structure and its construction method of basement |
| CN111636401A (en) * | 2020-05-18 | 2020-09-08 | 安徽省交通规划设计研究总院股份有限公司 | Double-deck box self-interacting bearing structure of soft soil foundation |
| CN111980075A (en) * | 2019-05-22 | 2020-11-24 | 深圳市佰邦建筑设计顾问有限公司 | Basement anti-floating structure and construction method thereof |
| CN113202148A (en) * | 2021-05-10 | 2021-08-03 | 四川省建筑科学研究院有限公司 | Basement water conservancy diversion pressure limiting structure |
| CN115790986A (en) * | 2022-12-14 | 2023-03-14 | 广东佰昌能源科技有限公司 | Method for eliminating buoyancy of box body in immersion experiment and sealing device |
-
2008
- 2008-12-11 CN CNA200810306175XA patent/CN101413273A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806669A (en) * | 2010-04-14 | 2010-08-18 | 同济大学 | Testing system of high-precision still water buoyancy model with underground structure |
| CN101806669B (en) * | 2010-04-14 | 2013-02-13 | 同济大学 | Testing system of high-precision still water buoyancy model with underground structure |
| CN102251695A (en) * | 2011-05-26 | 2011-11-23 | 中建七局第二建筑有限公司 | Anti-floating automatic pressure relief device for pool |
| CN102251695B (en) * | 2011-05-26 | 2013-07-10 | 中建七局第二建筑有限公司 | Anti-floating automatic pressure relief device for pool |
| CN104975734A (en) * | 2015-05-14 | 2015-10-14 | 中国十九冶集团有限公司 | Cast pumping well sleeve installing method |
| CN104975734B (en) * | 2015-05-14 | 2017-04-05 | 中国十九冶集团有限公司 | Casting machine casing installation method |
| CN106836248A (en) * | 2017-01-16 | 2017-06-13 | 中国建筑第八工程局有限公司 | The water storage structure and its construction method of basement |
| CN111980075A (en) * | 2019-05-22 | 2020-11-24 | 深圳市佰邦建筑设计顾问有限公司 | Basement anti-floating structure and construction method thereof |
| CN111636401A (en) * | 2020-05-18 | 2020-09-08 | 安徽省交通规划设计研究总院股份有限公司 | Double-deck box self-interacting bearing structure of soft soil foundation |
| CN113202148A (en) * | 2021-05-10 | 2021-08-03 | 四川省建筑科学研究院有限公司 | Basement water conservancy diversion pressure limiting structure |
| CN115790986A (en) * | 2022-12-14 | 2023-03-14 | 广东佰昌能源科技有限公司 | Method for eliminating buoyancy of box body in immersion experiment and sealing device |
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Owner name: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INSTITUTE C Free format text: FORMER OWNER: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. Effective date: 20110531 |
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Free format text: CORRECT: ADDRESS; FROM: 550004 NO. 208, BEIJING ROAD, GUIYANG CITY, GUIZHOU PROVINCE TO: 550081 NO.2, JINZHU ROAD, JINYANG NEW DISTRICT, GUIYANG CITY, GUIZHOU PROVINCE |
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Effective date of registration: 20110531 Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Applicant after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Applicant before: Guiyang Aluminium and Magnesium Design Inst. |
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Application publication date: 20090422 |