CN105064428A - Foundation reinforcement and protection method for telegraph pole near deep foundation pit - Google Patents
Foundation reinforcement and protection method for telegraph pole near deep foundation pit Download PDFInfo
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- CN105064428A CN105064428A CN201510430135.6A CN201510430135A CN105064428A CN 105064428 A CN105064428 A CN 105064428A CN 201510430135 A CN201510430135 A CN 201510430135A CN 105064428 A CN105064428 A CN 105064428A
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Abstract
The invention relates to a foundation reinforcement and protection method for a telegraph pole near a deep foundation pit. The foundation reinforcement and protection method comprises the following steps that S1 high-pressure jet grouting piles are driven into the side, near the foundation pit, of the telegraph pole in the direction of an underground wall; S2 a plurality of steel channels are inserted into the high-pressure jet grouting piles; S3 a plurality of steel channels are driven into the two sides of the telegraph pole perpendicular to the direction of the underground wall, and the steel channels on the three sides surround the three sides of the telegraph pole; S4 steel purlins are arranged on the outer sides of the steel channels, and the steel purlins and the steel channels are welded into a whole. The method that the high-pressure jet grouting piles and the steel channels are used for reinforcing the foundation of the telegraph pole is adopted, so that the safety of the telegraph pole and constructors in the excavation process of the foundation pit is guaranteed without the lengthy procedures of removing the telegraph pole of an electric power department; construction progress is accelerated; cost is reduced; in addition, the method is flexible and suitable for various different construction conditions.
Description
Technical field
The present invention relates to the protection of existing building in work progress, particularly relate to a kind of wire pole base method for reinforcing and protecting being close to deep foundation ditch.
Background technology
At present, along with developing rapidly of urban construction, the architectural complex in city are rised sheer from level ground, and building is constantly to underground space development, and newly-built building almost all arranges the basement of various function.And when constructing basement excavation pit; often can encounter the situation of foundation ditch other next-door neighbour high-voltage line electric pole; if do not process it; then in excavation process; electric pole even constructor of collapsing may occur the major accident such as to get an electric shock, and processing mode in the past can only be coordinate power department to move high-voltage line electric pole, but resettlement efficiency is lower; be difficult to the rhythm of catching up with Development control area, but also high removal charge and cable expense need be paid.
Therefore; while how a kind of progress not affecting foundation pit construction is provided, can also guarantee that the wire pole base method for reinforcing and protecting of the contiguous deep foundation ditch of the safety of electric pole and constructor in Excavation Process is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
The invention provides a kind of wire pole base method for reinforcing and protecting being close to deep foundation ditch, to solve above-mentioned technical problem of the prior art.
For solving the problems of the technologies described above, the invention provides a kind of wire pole base method for reinforcing and protecting being close to deep foundation ditch, comprising the steps:
S1: in the side of electric pole near foundation ditch, high-pressure rotary jet grouting pile is squeezed in the direction along subterranean wall;
S2: insert some channel-section steels in described high-pressure rotary jet grouting pile;
S3: in the direction of the both sides of described electric pole perpendicular to described subterranean wall, squeeze into some channel-section steels, the channel-section steel of three is formed in three sides of described electric pole and surrounds;
S4: the arranged outside steel along described channel-section steel encloses purlin, encloses purlin by described steel and described steel tank is welded as entirety.
Preferably, before step S1, first draw anchor temporary fixed to described electric pole.
Preferably, the method for drawing anchor temporary fixed described in is: fix 3 wire rope at the medium position of described electric pole, the other end of described wire rope is fixedly connected with 3 angle steel inserting underground respectively.
Preferably, described 3 angle steel are uniformly distributed in around described electric pole, and the degree of depth that described angle steel inserts underground is more than 1.5m.
Preferably, described channel-section steel is pulled out after having constructed by the retaining wall outside foundation ditch.
Preferably, in step sl, along subterranean wall direction, squeezing into 7 specifications in each 1.5m scope in past both sides centered by described electric pole is
high-pressure rotary jet grouting pile.
Preferably, the insertion of pressing 1:1 of described high-pressure rotary jet grouting pile is than below the native digging depth of insertion first skin.
Preferably, in step s 2, described channel-section steel inserts the 5.5m of the degree of depth of described high-pressure rotary jet grouting pile, and the height basseted is 0.5m.
Preferably, in step S3, be arranged at some channel-section steels of described electric pole both sides, the opening direction of its two adjacent channel-section steels is contrary, and sidewall engages socket mutually.
Preferably, described high-pressure rotary jet grouting pile adopts high-pressure rotary-spray drilling machine construction, and described channel-section steel adopts digging machine or manipulator to insert.
Compared with prior art, a kind of wire pole base method for reinforcing and protecting tool being close to deep foundation ditch provided by the invention has the following advantages:
1, the present invention adopts the method for electric pole being carried out to underpin, and do not need power department to move the tediously long flow process of electric pole, electric pole reinforcement protection can be implemented in the lump with the soil stabilization stage, does not take the duration, and construct convenient, construction speed is improved;
2, adopt the method that wire pole base is reinforced, do not need to pay expensive removal charge and cable expense to power department, and high-pressure rotary jet grouting pile workload is few and unit price is lower, can reuse after channel-section steel dismounting, greatly save engineering cost;
3, wire pole base reinforcing process only needs minitype high voltage rotary churning pile machine, digging machine or manipulator, without the need to a large amount of artificial and big machinery cooperation, save artificial and mechanical cooperation expense, in addition, high-pressure rotary jet grouting pile and channel-section steel retaining wall all belong to ripe construction technology, operation ease and degree of safety higher;
Electric pole reinforcing scope and the degree of depth of 4, closing on deep foundation ditch can adjust position, scope and length etc. flexibly according to the change of foundation ditch condition, implement flexibly, to be applicable to various different Construction Condition.
Accompanying drawing explanation
Fig. 1 is to the schematic diagram that the electric pole of contiguous deep foundation ditch draws anchor temporary fixed in the present invention;
Fig. 2 is the construction plan that the wire pole base of contiguous deep foundation ditch in the present invention is reinforced;
Fig. 3 is the construction plane enlarged diagram around the high-pressure rotary jet grouting pile of electric pole, channel-section steel in the present invention;
Fig. 4 is the sectional drawing that the wire pole base of contiguous deep foundation ditch in the present invention is reinforced.
In figure: 10-electric pole, 11-wire rope, 12-angle steel, 20-foundation ditch, 21-subterranean wall, 22-retaining wall, 23-first support enclose purlin, 30-high-pressure rotary jet grouting pile, 40-channel-section steel, 50-steel enclose purlin.
Detailed description of the invention
In order to the technical scheme of more detailed statement foregoing invention, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.
A kind of wire pole base method for reinforcing and protecting being close to deep foundation ditch provided by the invention, please refer to Fig. 2 to Fig. 4, comprises the steps:
S1: in the side of electric pole 10 near foundation ditch 20, high-pressure rotary jet grouting pile 30 is squeezed in the direction along subterranean wall 21;
S2: insert some channel-section steels 40 in described high-pressure rotary jet grouting pile 30;
S3: in the direction of the both sides of described electric pole 10 perpendicular to described subterranean wall 21, squeezes into some channel-section steels 40 (in the present embodiment every 5, side), and the channel-section steel 40 of three is formed in three sides of described electric pole 10 and surrounds;
S4: the arranged outside steel along described channel-section steel 40 encloses purlin 50, encloses purlin 50 and is welded as entirety with described steel tank 40 by described steel, in the present embodiment, described steel encloses purlin 50 and adopts model to be the channel-section steel Two bors d's oeuveres composition of 14a.
The present invention, in electric pole 10 closing foundation ditch 20 side, utilizes described channel-section steel 40 and high-pressure rotary jet grouting pile 30 to be consolidated into entirety, carries out underpin protection to electric pole 10, thus prevents from the soil body from caving in causing electric pole 10 collapse or be out of shape, guarantee construction safety; And do not need to pay expensive removal charge and cable expense to power department, greatly save construction cost; In addition, the principle of the invention is simple, and easy construction, shortens the duration, and use safety.
Preferably, please emphasis with reference to figure 1, before step S1, first draw anchor temporary fixed to described electric pole 10, described method of drawing anchor temporary fixed is: fix 3 wire rope 11 at the medium position of described electric pole 10, the other end of described wire rope 11 is fixedly connected with 3 angle steel 12 inserting underground respectively, the angle steel 12 inserting underground is utilized to produce pulling force by wire rope 11 pairs of electric poles 10, and then carry out temporary fixed to electric pole 10, preferably, described 3 angle steel 12 are uniformly distributed in described electric pole 10 around, namely guarantee that the pulling force of 3 wire rope, 11 pairs of electric poles 10 forms intersecting angle, make the direction of 3 pulling force not in same direction, and the degree of depth h1 that described angle steel 12 inserts underground is more than 1.5m, to provide enough pulling force, prevent in follow-up high-pressure rotary jet grouting pile 30 work progress, electric pole 10 basis deforms inclination.
Preferably, ask emphasis with reference to figure 4, after the retaining wall 22 outside foundation ditch 20 has been constructed, described channel-section steel 40 can be pulled out, that is, when soil body lateral pressure is delivered to the retaining design of below the first skin earthwork by high-pressure rotary jet grouting pile 30 and the assembly of channel-section steel 40; First supports and encloses after purlin 23 and retaining wall 22 constructed, and passes to the first support and encloses purlin 23 and retaining wall 22; After retaining wall 22 reaches predetermined strength, the outer lateral earth pressure of foundation ditch 20 is mainly born by retaining wall 22, and the soil body is in stable state; now can pull out channel-section steel 40; so far complete and the reinforcement protection on electric pole 10 basis is operated, and the channel-section steel 40 after dismounting can reuse, and saves engineering cost further.
Preferably, please emphasis referring to figs. 2 and 3, in step sl, along subterranean wall 21 direction, squeezing into 7 specifications toward both sides each 1.5m scopes centered by described electric pole 10 be
high-pressure rotary jet grouting pile 30, in other words, the total length h2 of 7 high-pressure rotary jet grouting piles 30 is 3m, the diameter of every root high-pressure rotary jet grouting pile 30 is 0.6m, distance between two adjacent high-pressure rotary jet grouting piles 30 is 0.4m, while providing enough support force, can not cause the waste of material.
Preferably, please emphasis with reference to figure 4, the insertion of pressing 1:1 of described high-pressure rotary jet grouting pile 30 is than below the native digging depth of insertion first skin, particularly, due in the present embodiment, first supports the digging depth h3 enclosing purlin 23 construction is about 3m, ratio is inserted according to 1:1, then the height h4 of high-pressure rotary jet grouting pile 30 is ground down 6m, and before the first skin soil excavation, high-pressure rotary jet grouting pile 30 and channel-section steel 40 pairs of electric poles 10 surround the stronger soil body retaining structure system of formation bearing capacity.Every wire bar 10 establishes 7 high-pressure rotary jet grouting piles 30 to reinforce, and the construction requirement of high-pressure rotary jet grouting pile 30 generally requires identical with the jet grouting pile construction of soil stabilization, also implements in the lump in the soil stabilization stage, the duration not outside occupying volume, can not affect construction speed.
Preferably, please continue to refer to Fig. 4, in step s 2, described channel-section steel 40 inserts the 5.5m of the degree of depth h5 of described high-pressure rotary jet grouting pile 30, and the height h6 basseted is 0.5m, and while providing enough support forces, being convenient to the later stage pulls out channel-section steel 40.
Preferably; please emphasis with reference to figure 3; in step S3, be arranged at some channel-section steels 40 of described electric pole 10 both sides, the opening direction of its two adjacent channel-section steels 40 is contrary; and sidewall engages socket mutually; that is, two sidewalls of channel-section steel 40 insert in the channel-section steel 40 of adjacent both sides respectively, like this; utilize steel to enclose purlin 50 when connecting channel-section steel 40 for entirety, the firmness of whole reinforcement protection structure can be increased further.
Preferably, described high-pressure rotary jet grouting pile 30 adopts XP-20B or XP-30B minitype high voltage jet drill rig to construct, the length of described channel-section steel 40 is 6m, specification is 32a, and adopt digging machine or manipulator to insert, without the need to a large amount of artificial and big machinery cooperation, save artificial and mechanical cooperation expense, and high-pressure rotary jet grouting pile 30 and channel-section steel 40 do the construction technology that retaining wall all belongs to ripe, operation ease and degree of safety improve greatly.
In sum, a kind of wire pole base method for reinforcing and protecting being close to deep foundation ditch provided by the invention, comprises the steps: S1: in the side of electric pole 10 near foundation ditch, high-pressure rotary jet grouting pile 30 is squeezed in the direction along subterranean wall 21; S2: insert some channel-section steels 40 in described high-pressure rotary jet grouting pile 30; S3: in the direction of the both sides of described electric pole 10 perpendicular to described subterranean wall 21, the channel-section steel 40 squeezing into 40, three, some channel-section steels is formed in three sides of described electric pole 10 and surrounds; S4: the arranged outside steel along described channel-section steel 40 encloses purlin 50, encloses purlin 50 and is welded as entirety with described steel tank 40 by described steel.The present invention adopts high-pressure rotary jet grouting pile 30 and channel-section steel 40 pairs of electric poles 10 to carry out the method for underpin; guarantee the safety of electric pole 10 and constructor in foundation ditch 20 digging process; and do not need power department to move the tediously long flow process of electric pole 10; thus accelerate construction speed; save cost; and the method flexibility is high, be applicable to various different Construction Condition.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. be close to a wire pole base method for reinforcing and protecting for deep foundation ditch, it is characterized in that, comprise the steps:
S1: in the side of electric pole near foundation ditch, high-pressure rotary jet grouting pile is squeezed in the direction along subterranean wall;
S2: insert some channel-section steels in described high-pressure rotary jet grouting pile;
S3: in the direction of the both sides of described electric pole perpendicular to described subterranean wall, squeeze into some channel-section steels, the channel-section steel of three is formed in three sides of described electric pole and surrounds;
S4: the arranged outside steel along described channel-section steel encloses purlin, encloses purlin by described steel and described steel tank is welded as entirety.
2. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, is characterized in that, before step S1, first draw anchor temporary fixed to described electric pole.
3. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 2; it is characterized in that; described method of drawing anchor temporary fixed is: fix 3 wire rope at the medium position of described electric pole, and the other end of described wire rope is fixedly connected with 3 angle steel inserting underground respectively.
4. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 3, it is characterized in that, described 3 angle steel are uniformly distributed in around described electric pole, and the degree of depth that described angle steel inserts underground is more than 1.5m.
5. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, it is characterized in that, described channel-section steel is pulled out after having constructed by the retaining wall outside foundation ditch.
6. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, is characterized in that, in step sl, along subterranean wall direction, squeezing into 7 specifications in each 1.5m scope in past both sides centered by described electric pole is
high-pressure rotary jet grouting pile.
7. the wire pole base method for reinforcing and protecting of deep foundation ditch as claimed in claim 1 contiguous, is characterized in that, the insertion of pressing 1:1 of described high-pressure rotary jet grouting pile is than below the native digging depth of insertion first skin.
8. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, it is characterized in that, in step s 2, described channel-section steel inserts the 5.5m of the degree of depth of described high-pressure rotary jet grouting pile, and the height basseted is 0.5m.
9. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, is characterized in that, in step S3, be arranged at some channel-section steels of described electric pole both sides, and the opening direction of its two adjacent channel-section steels is contrary, and sidewall engages socket mutually.
10. the wire pole base method for reinforcing and protecting of contiguous deep foundation ditch as claimed in claim 1, it is characterized in that, described high-pressure rotary jet grouting pile adopts high-pressure rotary-spray drilling machine construction, and described channel-section steel adopts digging machine or manipulator to insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430135.6A CN105064428B (en) | 2015-07-21 | 2015-07-21 | Foundation reinforcement and protection method for telegraph pole near deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430135.6A CN105064428B (en) | 2015-07-21 | 2015-07-21 | Foundation reinforcement and protection method for telegraph pole near deep foundation pit |
Publications (2)
| Publication Number | Publication Date |
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| CN105064428A true CN105064428A (en) | 2015-11-18 |
| CN105064428B CN105064428B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510430135.6A Active CN105064428B (en) | 2015-07-21 | 2015-07-21 | Foundation reinforcement and protection method for telegraph pole near deep foundation pit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105484270A (en) * | 2015-12-01 | 2016-04-13 | 广州市恒盛建设工程有限公司 | Reinforcement protection construction method of high steep old rubble retaining wall adjacent to deep foundation pit |
| CN109537418A (en) * | 2018-12-10 | 2019-03-29 | 鄂宇 | It crosses and wears construction of the highway building method for supporting |
| CN110593590A (en) * | 2019-08-15 | 2019-12-20 | 中电建十一局工程有限公司 | In-situ protection method for existing high-voltage line pole in deep foundation pit excavation area |
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| GB319133A (en) * | 1928-09-08 | 1929-09-19 | Arthur Hugh Seabrook | Improvements in or relating to poles, masts and the like for supporting overhead electric wires and for similar purposes |
| GB653223A (en) * | 1948-11-25 | 1951-05-09 | Colcrete Ltd | Improvements in or relating to the reinforcement in situ of tapered tubular poles with concrete or grout |
| CN101487355A (en) * | 2009-02-23 | 2009-07-22 | 廖力锋 | Telegraph pole and its mounting and fixing method |
| CN202347529U (en) * | 2011-09-16 | 2012-07-25 | 中国电力科学研究院 | Metal assembly type tower foundation |
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| GB319133A (en) * | 1928-09-08 | 1929-09-19 | Arthur Hugh Seabrook | Improvements in or relating to poles, masts and the like for supporting overhead electric wires and for similar purposes |
| GB653223A (en) * | 1948-11-25 | 1951-05-09 | Colcrete Ltd | Improvements in or relating to the reinforcement in situ of tapered tubular poles with concrete or grout |
| CN101487355A (en) * | 2009-02-23 | 2009-07-22 | 廖力锋 | Telegraph pole and its mounting and fixing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484270A (en) * | 2015-12-01 | 2016-04-13 | 广州市恒盛建设工程有限公司 | Reinforcement protection construction method of high steep old rubble retaining wall adjacent to deep foundation pit |
| CN109537418A (en) * | 2018-12-10 | 2019-03-29 | 鄂宇 | It crosses and wears construction of the highway building method for supporting |
| CN110593590A (en) * | 2019-08-15 | 2019-12-20 | 中电建十一局工程有限公司 | In-situ protection method for existing high-voltage line pole in deep foundation pit excavation area |
| CN110593590B (en) * | 2019-08-15 | 2021-05-18 | 中电建十一局工程有限公司 | In-situ protection method for existing high-voltage line pole in deep foundation pit excavation area |
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| CN105064428B (en) | 2017-05-03 |
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