CN101060232B - Low altitude high voltage framework/bracket foundation tilt correcting method and its special-purpose devices - Google Patents
Low altitude high voltage framework/bracket foundation tilt correcting method and its special-purpose devices Download PDFInfo
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- CN101060232B CN101060232B CN2006101233930A CN200610123393A CN101060232B CN 101060232 B CN101060232 B CN 101060232B CN 2006101233930 A CN2006101233930 A CN 2006101233930A CN 200610123393 A CN200610123393 A CN 200610123393A CN 101060232 B CN101060232 B CN 101060232B
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Abstract
The related process method for low-position high-pressure charged frame/bracket foundation declined sinkage comprises: 1. cleaning the field for the requested work surface of correction device and the holding platform; 2. adjusting the jack of the correction device to deviate from the axis of pressed peg; 3. on the holding platform of correction device, stacking as the single-peg request; 4. inserting the short peg with length less than 2m from the pre-set cavity of door-type steel frame; and 5. lifting the platform by the hydraulic jack and back-pressed shift, transferring the back-pressure to the top of short peg to make the fundament peg sink. This invention has well reliability, and introduces no noise or pollution.
Description
Technical field
The present invention relates to a kind of method for correcting error and special-purpose deviation correcting device thereof of low altitude high voltage framework/bracket foundation.Belong to power station framework/bracket foundation technical field of construction.
Background technology
At present, a lot of transformer stations are built in the mud place of deep layer, and the large tracts of land that is easy to generate the structure bracket basis after the operation a period of time of going into operation is partially heavy.Because the large tracts of land of structure bracket basis is sunk partially, therefore, can cause the frame girder distortion of full power station, distortion, like this, the security of operation of meeting serious threat power equipment can have a strong impact on the power supply announcement property as the junction on the other hand on the one hand.Because this type transformer station is built in the mud place of deep layer; The equipment of transformer station is short, therefore, and under the situation of the charged space of equipment; The conventional equipment of prior art can't get into the place and construct; The processing of rectifying a deviation must large-area power-cuts, will bring very adverse influence to people's production and life like this.For example: 220 kilovolt of three river transformer station is built in deep layer (12～20 meters of thickness) mud place.Constructed in design in 1992 in this station in 1994, nineteen ninety-five goes into operation and moves.The operation of going into operation promptly found that structure support large tracts of land was partially heavy successively in 2 years; Jiangmen power supply administration handles through the regulation more than 5 years; Because the hall conventional equipment can't get into the scene framework/bracket foundation is carried out low level correction processing; Therefore, heavy partially still sustainable development, 600～800 millimeters of the whole sinkings of place large tracts of land; 480 millimeters of outdoor framework maximum settlements, horizontal off normal is 270 millimeters; The equipment supporter maximum settlement is 280 millimeters, and horizontal departure is 120 millimeters.The visual situation of full power station framework beam column is as " dragon dance ", and the security of operation of serious threat power equipment has a strong impact on the power supply reliability as the junction.
Summary of the invention
First purpose of the present invention; Be for overcome under charged condition, existing conventional equipment can not be to being in the heavy shortcoming of handling partially of low altitude high voltage framework/bracket foundation; A kind of method for correcting error of low altitude high voltage framework/bracket foundation is provided; This method for correcting error can be guaranteed partially effectively to correct reset processing to the electrification in high voltage framework/bracket is heavy, satisfies the equipment safety operation requirement.
Second purpose of the present invention is the special-purpose deviation correcting device in order to provide a kind of low altitude high voltage framework/bracket foundation to sink inclined to one side processing method.
First purpose of the present invention can reach through taking following measure:
The method for correcting error of low altitude high voltage framework/bracket foundation is characterized in that being to comprise the steps:
1) site preparation, with the levelling of the land around the low altitude high voltage framework/bracket, the axis of rolling that makes it to satisfy special-purpose deviation correcting device is steadily supporting with the preloading platform, simultaneously by laying out pile an excavation stub low latitude desired depth in place and refute a required scope of operation;
2) adjust special-purpose deviation correcting device, the power subject and the preloading steelframe platform of special-purpose deviation correcting device are installed the compound piling body of formation, adjust the jack of special-purpose deviation correcting device and the misalignment of axe of piling point simultaneously, control this misalignment of axe within ± 5 millimeters;
3) the enterprising windrow of preloading platform at special-purpose deviation correcting device carries, and promptly carries at the enterprising windrow of said preloading platform by design single pile preloading requirement;
4) inserting the ultrashort stake in location, be that≤2 meters ultrashort stake is inserted from the predetermined cavity of the door section steel braced frame of special-purpose deviation correcting device and located with length, and adjusts its level synchronously and verticality is≤1/100;
5) static pressed pile utilizes the back-pressure guide rail of special-purpose deviation correcting device to lock the jack position, and upper and lower section activity back-pressure of jack axle is installed; Start hydraulic jack then; Through hydraulic jack and the associated working of back-pressure axle the preloading platform is promoted, pass to the top of ultrashort stake, force foundation pile in the soil body, to sink by platform load back-pressure; Produce termination gradually when the threshold friction resistance balance of the soil body to platform preloading and foundation pile, finally reach the purpose that static pressure is handled pile foundation.
One embodiment of the present invention are: the 1st) step is described with the levelling of the land around the low altitude high voltage framework/bracket; Satisfy the axis of rolling and preloading platform steadily supporting of deviation correcting device, be meant that the place after smooth adapts to special-purpose deviation correcting device preloading platform held stationary when rolling is advanced or retreated.
The present invention adopts the symmetrical balance principle of special-purpose deviation correcting device to implement the long wing preloading technology of bat type, utilizes power subject that preloading platform load is reached the pile crown generation through the back-pressure effect and presses down energy, forces foundation pile in the soil body, to sink, and reaches the purpose of pile sinking.The key of know-why is the requirement that the platform preloading must be satisfied design load and safety factor; But also must satisfy the low level requirement of electrification in high voltage maximum height limit; Can not surpass the preloading platform produces cantilever after back-pressure breaks away from the axis of rolling deflection deformation controlling value simultaneously, the three is the performance and the value index of necessary control on Design Treatment.
Second purpose of the present invention can reach through taking following measure:
A kind of special-purpose deviation correcting device of method for correcting error of low altitude high voltage framework/bracket foundation, its design feature is: comprise hydraulic jack, the guide tracked composite gate section steel braced frame of back-pressure, tumbling-type plane frame work type preloading platform and carrier; Hydraulic jack is connected, forms power subject with the guide tracked composite gate section steel braced frame of back-pressure through positioning bolt, and the guide tracked composite gate section steel braced frame of back-pressure is connected, forms compound piling body with tumbling-type plane frame work type preloading platform through set bolt; Carrier is arranged on the tumbling-type plane frame work type preloading platform, from ground to the height of carrier end face≤1.8 meter, height≤2.0 of guide tracked composite gate section steel braced frame end face meter from ground to the back-pressure.
The guide tracked composite gate section steel braced frame of said hydraulic jack and back-pressure connects into power subject through positioning bolt, connects into compound piling body by said power subject and tumbling-type plane frame work type preloading platform through set bolt.
Second purpose of the present invention can also reach through taking following measure:
One embodiment of the present invention are: the guide tracked composite gate section steel braced frame of back-pressure can be made up of door type support, adjustable back-pressure axle, back-pressure guide rail and activity back-pressure axle; The back-pressure guide rail is arranged on an inner chamber of type support; Hydraulic jack is fixed on the inner chamber middle part of a type support through positioning bolt; The upper end of hydraulic jack is connected with adjustable back-pressure axle; The lower end of hydraulic jack is connected with activity back-pressure axle, and it is protruding that the lower end of activity back-pressure axle penetrates the bottom of tumbling-type plane frame work type preloading platform; The bottom of tumbling-type plane frame work type preloading platform can be provided with roller.
One embodiment of the present invention are: said carrier has two, lays respectively at the both sides of the guide tracked composite gate section steel braced frame of back-pressure, the length of each carrier be 4～5 meters, width for≤1.3 meters, highly be to the height of carrier end face≤1.8 meter from ground.
One embodiment of the present invention are: said carrier is made up of the plain concrete prefabricated component.
The present invention has following outstanding beneficial effect
1, the present invention is that a kind of low Low Level tumbling-type platform preloading static pressed pile is to the heavy inclined to one side treating apparatus of electrification in high voltage framework/bracket foundation; This device according to transformer station can not large-area power-cuts environmental characteristic; Utilize the processing method of tumbling-type preloading platform static pressure construction, effectively solve the technical barrier that electrification in high voltage place conventional equipment does not have a power failure and just can't construct.
2, the present invention is directed to the special operation condition of the equipment short charged (2～2.5 meters of safe limits for height) of the mud place transformer station that is built in deep layer; Being applicable to that the electrification in high voltage framework/bracket of this environment is heavy corrects reset processing partially, solves the difficult problem that conventional pile machine equipment can't get into site operation.
3, the present invention breaks existing conventional conception, and heavy/Deviation Correction Construction is handled under electrification in high voltage, extreme low-altitude (below 2.0 meters) environment, to adopt low Low Level tumbling-type platform preloading static pressed pile that framework, bracket basis are entangled.The static pressure construction equipment is simple, installs easily, and is easy to operate.Compound piling body equipment low level control, effective, safe and reliable.Shockproof, noiseless, pollution-free are created the environment-friendly type construction environment.
4, the present invention's (characteristics of 750KN～800KN) that combine frame structures and the foundation load of transformer station big; Adopt extreme low-altitude floor tumbling-type platform to carry out artificial preloading static pressure precast piling (2.0 meters), effectively solving conventional preloading Static pressure pile driver can not ultralow preloading and the technical barrier that rolls of low level.
Description of drawings
Fig. 1 is the structure sectional view of low Low Level tumbling-type platform preloading static pressure device of the present invention.
Fig. 2 be among Fig. 1 A-A to the structure sectional view.
Fig. 3 is the flow chart that the present invention rectifies a deviation and handles.
The specific embodiment
With reference to Fig. 1, Fig. 2, a specific embodiment of the low Low Level tumbling-type platform preloading static pressure device that the present invention is special-purpose is made up of the guide tracked composite gate section steel braced frame of hydraulic jack 1, back-pressure 2, tumbling-type plane frame work type preloading platform 3 and carrier 4; Said hydraulic jack 1 connects into power subject 5 with the guide tracked composite gate section steel braced frame 2 of back-pressure through positioning bolt, and said power subject 5 connects into compound piling body with tumbling-type plane frame work type preloading platform 3 through set bolt; Carrier 4 is arranged on the tumbling-type plane frame work type preloading platform 3,1≤1.8 meter of the height of 4 end faces from ground to the carrier, height L≤2.0 of guide tracked composite gate section steel braced frame 2 end faces meter from ground to the back-pressure.
In the present embodiment:
The guide tracked composite gate section steel braced frame 2 of back-pressure is made up of door type support 21, adjustable back-pressure axle 22, back-pressure guide rail 23 and activity back-pressure axle 24; Back-pressure guide rail 23 is arranged on an inner chamber of type support 21; Hydraulic jack 1 is fixed on the inner chamber middle part of a type support 21 through positioning bolt; The upper end of hydraulic jack 1 is connected with adjustable back-pressure axle 22; The lower end of hydraulic jack 1 is connected with activity back-pressure axle 24, and it is protruding that the lower end of activity back-pressure axle 24 penetrates the bottom of tumbling-type plane frame work type preloading platform 3; The bottom of tumbling-type plane frame work type preloading platform 3 can be provided with roller 31.Said carrier 4 has two, lays respectively at the both sides of the guide tracked composite gate section steel braced frame 2 of back-pressure, the length of each carrier 4 be 4～5 meters, width for≤1.3 meters, highly be height≤1.8 meter of 4 end faces from ground to the carrier.Said carrier 4 is made up of the plain concrete prefabricated component.
With reference to Fig. 3, low altitude high voltage framework/bracket foundation sinks inclined to one side processing method, comprises the steps:
1) site preparation; With the levelling of the land around the low altitude high voltage framework/bracket; Make it to satisfy the axis of rolling and preloading platform steadily supporting of special-purpose deviation correcting device; Make the place after smooth adapt to special-purpose deviation correcting device preloading platform held stationary when rolling is advanced or retreated, simultaneously by laying out pile an excavation stub low latitude desired depth in place and refute the required scope of operation of stake;
2) power subject and platform are installed; It mainly is the special-purpose deviation correcting device of adjustment; The power subject and the preloading steelframe platform of special-purpose deviation correcting device are installed the compound piling body of formation, adjust the jack of special-purpose deviation correcting device and the misalignment of axe of piling point simultaneously, control this misalignment of axe within ± 5 millimeters;
3) platform preloading is carried at the enterprising windrow of preloading platform of special-purpose deviation correcting device, promptly carries at said preloading platform 3 enterprising windrows by design single pile preloading requirement, and the length of the carrier 4 of present embodiment preloading is M=4.0～5.0, width N=1.3 rice.
4) piling comprises two steps,
4.1) at first insert the ultrashort stake 6 in location, be that≤2 meters ultrashort stake is inserted from the predetermined cavity of the door section steel braced frame of special-purpose deviation correcting device and located with length, and adjust its level synchronously and verticality is≤1/100;
4.2) static pressed pile then, utilize the back-pressure guide rail locking jack position of special-purpose deviation correcting device, upper and lower section activity back-pressure of jack axle is installed; Start hydraulic jack then; Through hydraulic jack and the associated working of back-pressure axle the preloading platform is promoted, pass to the top of ultrashort stake, force foundation pile in the soil body, to sink by platform load back-pressure; When platform preloading and foundation pile threshold friction resistance balance, will produce termination gradually, finally reach the purpose that static pressure is handled pile foundation at the soil body.
Piling is carried out two operations after accomplishing again: pile foundation detects, and heavy Deviation Correction Construction is entangled on the basis.
The present invention can be widely used in: the booster stations of 110 kilovolts～500 kilovolts of various electric pressures of (1) electric power, network system, transformer station handle framework, bracket basis are heavy under the condition of electrification in high voltage partially; (2) power line tower of network system basis is heavy handles partially; (3) be confined to the industry under the ultralow space environment and civilian existing building is heavy handles partially.
Technique effect and application prospect:
The present invention passes through the enforcement in the three river transformer stations of 220KV; The present invention of its actual effect proof can not carry out construction processing at electrification in high voltage, extreme low-altitude, high the carrying under " three avoid " condition of single pile overcoming existing conventional equipment and technology, also overcome the height (framework is high) of existing equipment, huge (body volume is huge), high (construction costs is expensive) with technological partially surely and weakness.And the present invention just in time breaks above-mentioned " sky is avoided ", with the characteristics of short (equipment frame is short), little (the power subject volume is little), low (construction costs is low), gives full play to project benefit.
The present invention effectively satisfies the reliability requirement that the equipment operation is used.The installation of transformer station's electric fixtures is controlled by strictness with operation displacement difference, to guarantee the reliability of equipment performance.Adopt the inventive method that equipment structure support is sunk the inclined to one side actual measurement dominant bit difference of handling less than 10 millimeters, satisfy equipment actual motion reliability requirement.
Because the present invention has advantages such as relatively short, effective, easy construction of small investment, duration; Therefore; Popularizing application prospect is widely arranged; Engineering construction is carried out at soft foundation in early days in domestic coastal areas such as the Guangdong Delta of the Pearl River heavy providing partially generally taken place entangle heavy deviation correcting technology design considerations reliably and successfully handle experience, innovated traditional entangling and sunk the deviation correcting technology processing method, obtained good project benefit.
The present invention can be applied to the heavy processing partially in existing basis of the engineerings such as power plant, transformer station and power transmission and transformation line column foot of power system, solves the long-term slowly heavy insecure technical barrier of production run that causes partially of soft foundation.Be specially adapted to early stage heavy inclined to one side processing of foundation of generally on soft foundation, carrying out construction such as power plant, transformer station in coastal area such as the Guangdong Delta of the Pearl River.
Claims (2)
1. the method for correcting error of low altitude high voltage framework/bracket foundation is characterized in that being to comprise the steps:
1) site preparation, with the levelling of the land around the low altitude high voltage framework/bracket, the axis of rolling that makes it to satisfy special-purpose deviation correcting device is steadily supporting with the preloading platform, simultaneously by laying out pile an excavation stub low latitude desired depth in place and refute a required scope of operation;
2) adjust special-purpose deviation correcting device, the power subject and the preloading steelframe platform of special-purpose deviation correcting device are installed the compound piling body of formation, adjust the jack of special-purpose deviation correcting device and the misalignment of axe of piling point simultaneously, control this misalignment of axe within ± 5 millimeters;
3) the enterprising windrow of preloading platform at special-purpose deviation correcting device carries, and promptly carries at said preloading platform 3 enterprising windrows by design single pile preloading requirement;
4) inserting the ultrashort stake in location, be that≤2 meters ultrashort stake is inserted from the predetermined cavity of the door section steel braced frame of special-purpose deviation correcting device and located with length, and adjusts its level synchronously and verticality is≤1/100;
5) static pressed pile; Utilize the back-pressure guide rail locking jack position of special-purpose deviation correcting device, the adjustable back-pressure axle of jack epimere, hypomere activity back-pressure axle are installed, start hydraulic jack then; Through hydraulic jack and the associated working of back-pressure axle the preloading platform is promoted; Pass to the top of ultrashort stake by platform load back-pressure, force foundation pile in the soil body, to sink, produce termination when the threshold friction resistance balance of the soil body gradually to platform preloading and foundation pile;
6) said special-purpose deviation correcting device comprises hydraulic jack (1), the guide tracked composite gate section steel braced frame of back-pressure (2), tumbling-type plane frame work type preloading platform (3) and carrier (4); Hydraulic jack (1) is connected, forms power subject with the guide tracked composite gate section steel braced frame of back-pressure (2) through positioning bolt, and the guide tracked composite gate section steel braced frame of back-pressure (2) is connected, forms compound piling body with tumbling-type plane frame work type preloading platform (3) through set bolt; Carrier (4) is arranged on the tumbling-type plane frame work type preloading platform (3), height≤1.8 of (4) end face meter from ground to the carrier, height≤2.0 of guide tracked composite gate section steel braced frame (2) end face meter from ground to the back-pressure.
2. the method for correcting error of low altitude high voltage framework/bracket foundation as claimed in claim 1; It is characterized in that: the 1st) step is described with the levelling of the land around the low altitude high voltage framework/bracket; Satisfy the axis of rolling and preloading platform steadily supporting of special-purpose deviation correcting device, be meant that the place after smooth adapts to special-purpose deviation correcting device preloading platform held stationary when rolling is advanced or retreated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101233930A CN101060232B (en) | 2006-11-07 | 2006-11-07 | Low altitude high voltage framework/bracket foundation tilt correcting method and its special-purpose devices |
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| CN2006101233930A CN101060232B (en) | 2006-11-07 | 2006-11-07 | Low altitude high voltage framework/bracket foundation tilt correcting method and its special-purpose devices |
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| CN101060232A CN101060232A (en) | 2007-10-24 |
| CN101060232B true CN101060232B (en) | 2012-08-08 |
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| CN110112673B (en) * | 2019-06-12 | 2020-07-31 | 七星电气股份有限公司 | Intelligent environment-friendly inflatable ring main unit |
| CN112359888B (en) * | 2020-06-24 | 2022-02-08 | 郑州市瑞杰结构加固工程有限公司 | Static pile reaction frame jacking system for carbon filter tank body deviation rectifying and reinforcing construction and construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071983A (en) * | 1992-09-11 | 1993-05-12 | 管明德 | Anchor beam type hydrostatic piledriving method and equipment thereof |
| CN1242457A (en) * | 1999-08-03 | 2000-01-26 | 管明德 | Pile pressing machine |
| CN200969485Y (en) * | 2006-11-07 | 2007-10-31 | 广东省电力设计研究院 | Error-correcting device for low position high-voltage charged framework/bracket foundation |
-
2006
- 2006-11-07 CN CN2006101233930A patent/CN101060232B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071983A (en) * | 1992-09-11 | 1993-05-12 | 管明德 | Anchor beam type hydrostatic piledriving method and equipment thereof |
| CN1242457A (en) * | 1999-08-03 | 2000-01-26 | 管明德 | Pile pressing machine |
| CN200969485Y (en) * | 2006-11-07 | 2007-10-31 | 广东省电力设计研究院 | Error-correcting device for low position high-voltage charged framework/bracket foundation |
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| CN101060232A (en) | 2007-10-24 |
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