CN105756077A - Foundation ring rock anchor rod foundation - Google Patents

Foundation ring rock anchor rod foundation Download PDF

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Publication number
CN105756077A
CN105756077A CN201610090069.7A CN201610090069A CN105756077A CN 105756077 A CN105756077 A CN 105756077A CN 201610090069 A CN201610090069 A CN 201610090069A CN 105756077 A CN105756077 A CN 105756077A
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CN
China
Prior art keywords
foundation ring
foundation
steel
concrete
concrete cushion
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Granted
Application number
CN201610090069.7A
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Chinese (zh)
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CN105756077B (en
Inventor
马利鑫
马云龙
石健
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Beijing Jianancheng Geotechnical Engineering Co Ltd
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Beijing Jianancheng Geotechnical Engineering Co Ltd
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Priority to CN201610090069.7A priority Critical patent/CN105756077B/en
Publication of CN105756077A publication Critical patent/CN105756077A/en
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Publication of CN105756077B publication Critical patent/CN105756077B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/80Ground anchors
    • E02D5/808Ground anchors anchored by using exclusively a bonding material
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0007Production methods using a mold
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete

Abstract

The invention relates to a foundation ring rock anchor rod foundation.The foundation ring rock anchor rod foundation comprises a foundation ring foundation made of concrete and a concrete cushion layer arranged outside the foundation ring foundation in a sleeving mode, the foundation ring foundation and the concrete cushion layer are of a cylindrical solid structure, a foundation ring is arranged on the foundation ring foundation, reinforcement cages are fixed inside and outside the foundation ring, a middle steel formwork is arranged between the reinforcement cages and the concrete cushion layer, an inner steel formwork is embedded into the inner sides of the reinforcement cages, and an outer steel formwork is arranged at the outer side of the concrete cushion layer in a sleeving mode.The reinforcement cages are welded inside and outside the foundation ring, connectivity between the foundation ring and the foundation concrete is improved, and stability of the foundation ring is improved; by means of the technology of additionally arranging corrugated cylinders around the foundation ring, burial depth of the foundation ring is ensured on the condition that the foundation ring is wrapped by the inner and outer cylinders, the pull-out capacity of the foundation ring is improved, and the anti-side-pressure capacity of concrete around the foundation ring is improved.

Description

Foundation ring Rock Bolt Foundation
Technical field
The present invention relates to generation power foundation of wind power reinforcement technique field, be specifically related to a kind of foundation ring Rock Bolt Foundation.
Background technology
One of wind-power electricity generation generation mode the most ripe as field of renewable energy, most large-scale development and business development condition, gradually the important directions of Renewable Energy Development is become, particularly in the Inner Mongol, Gansu, Xinjiang, 6 the ten million KW level wind power base in the abundant area of wind energy resources such as Hebei and Jiangsu planning, also fully demonstrate the bright prospects of wind-powered electricity generation cause.But along with the large-scale development of wind energy turbine set, blower fan difficulty in process of construction and problem have also been obtained and progressively expose, and one of them is exactly the degree of stability of blower foundation, anti-pulling degree.
The steel-concrete combined structure that blower foundation is made up of steel loop and concrete, blower foundation ring is the important component part of blower foundation, tower body and basis as supporting construction unavoidably to bear huge wind-force effect, and blower foundation ring to bear all kinds of loads being passed to basis from blower fan pylon by steel loop.
Current embedded type tower barrel base wind-power market at home has certain occupation rate.But, the length of embedment of foundation ring is subject to the restriction of depth of foundation, causes that buried section buried foundation is excessively shallow, only about the blower fan tower barrel diameter of 0.3~0.4 times.And according to " Code for design of steel structures " (GB50017-2003) the 8.4.15 article, it is 1.5d (d is the external diameter of tubular pillar) that plug-in type suspension column inserts minimum-depth, and practical basis ring length of embedment is only 0.3d~0.4d far less than 1.5d.Due to the depth of foundation ring embedment, the bending resistance ratio that foundation ring side force provides is relatively limited.The destruction that foundation ring can be caused to produce because of fatigue load during this excessively shallow length of embedment in foundation ring basis, produces to affect the crack of structural safety at the part place of basis embedment.As a kind of special steel reinforced concrete structure, foundation ring and concrete carrying process in due to bi-material performance different, deformation can not be harmonious.Under the repeated action of fatigue load, the bond stress between foundation ring and concrete disappears along with vibration, disengages between foundation ring and basis;Local failure is there is in leeward side surface of base concrete under tower pressurized percussion.
In using foundation ring basis, foundation ring is poor with the connection effect on basis, and foundation ring can be made when load is bigger to extract from foundation ring basis, and the reinforcing bar being simultaneously connected with foundation ring is all pulled off.Accordingly, it would be desirable on the basis of prior art, a kind of reasonable in design of design research and development, the foundation ring basis of firm stable.
Summary of the invention
It is an object of the invention to provide a kind of foundation ring Rock Bolt Foundation, there is the foundation ring Rock Bolt Foundation of the advantage such as reasonable in design, firm stable.
It is an object of the invention to be achieved through the following technical solutions:
nullA kind of foundation ring Rock Bolt Foundation,Including formed by concrete foundation ring basis be sleeved on the concrete cushion outside it,Described foundation ring basis is columned solid construction with concrete cushion,The top on described foundation ring basis is provided with foundation ring,Steel reinforcement cage all it is fixed with inside and outside described foundation ring,Middle steel form it is provided with between described steel reinforcement cage and concrete cushion,The inner side setting-in of described steel reinforcement cage is provided with interior steel form,In using foundation ring basis,Foundation ring is poor with the connection effect on basis,Foundation ring can be made when load is bigger to extract from foundation ring basis,The reinforcing bar being simultaneously connected with foundation ring is all pulled off,This structure significantly improves the globality on basis,Foundation ring is bound round in cylinder by internal layer template and middle level template firmly,Improve the anti-side rigidity of foundation ring surrounding concrete,The reinforcing of steel reinforcement cage simultaneously,Add the depth of burying of foundation ring,Also add foundation ring and concrete contact area,Improve steadiness and the pull resistance of foundation ring.
Further, can embodiment as one, the outer sheath of described concrete cushion is equiped with outer steel mould plate, described concrete cushion is provided with along the equally distributed high-strength grouting post of its bottom surface extension, described high-strength grouting post vertically connects described concrete cushion, being coaxially disposed an anchor pole in described high-strength grouting post, described anchor pole is run through described concrete cushion and is fixed in described high-strength grouting post by pressure grouting.
Further, can embodiment as one, it is additionally provided with some around the described equally distributed transverse support bar of interior steel form, described transverse support bar extends transversely through described interior steel form, described transverse support bar has from inside to outside sequentially passed through interior steel form, foundation ring, middle steel form, concrete cushion, outer steel mould plate, transverse support bar connects the concrete separated by middle steel form, form monolithic concrete structure, transverse support bar is passed through the hole that the side of foundation ring is reserved, improve the breakout capacity of foundation ring, play the measuring body effect by muscle of advocating of tension simultaneously, two ends adopt circular bloom to replace bending reinforcing steel bar, remove colligation operation from, the reduction duration, save reinforcing bar amount, easily form standard gauge modelling to produce.
Further, as one can embodiment, described steel reinforcement cage includes the transverse steel being welded to connect with described foundation ring, and the two ends of described transverse steel all vertically connect longitudinal reinforcement.
Further, as one can embodiment, also include multiple steel hoop, the plurality of steel hoop is set in outside and the inner side of described longitudinal reinforcement.
Further, as one can embodiment, be all welded to connect between described transverse steel, longitudinal reinforcement, multiple steel hoop.
Further, as one can embodiment, described outer steel mould plate, middle steel form and interior steel form are bellows, and outer steel mould plate, middle steel form and interior steel form are assemblied to form by multiple subtemplates.
Further, as one can embodiment, the concrete support structure that described cylinder cushion cap is made up of the concrete of C35-C40 label.
The invention have the benefit that
1, the present invention is by equal welded reinforcement cage inside and outside foundation ring, increase the connectivity of foundation ring and base concrete, too increase the depth of burying of foundation ring, to improve the steadiness that foundation ring is embedded in foundation ring basis, add foundation ring breakout capacity in foundation ring basis.
2, the present invention by increasing the technology of bellows around foundation ring so that foundation ring, under the parcel of inner/outer tube, adds the depth of burying on foundation ring basis, to increase the breakout capacity of foundation ring, thus improving the lateral pressure resistant ability of foundation ring surrounding concrete.
3, the present invention prolongs the equally distributed anchor pole of its extension by being provided with on the bottom surface of concrete cushion, solving can not boundary of works area is limited again local enforcement, or can not again the earth's surface such as mountain region, rock hard area enforcement, thus expanding the scope of application of this technology, also the bearing capacity on whole basis is increased, making basis more firm, total cost is low, widely applicable.
4, the present invention is by being provided with some transverse support bar extending transversely through interior steel form, add the fastening between outer firm template and concrete cushion, simultaneously outer just template again can the thrust of dispensing support bar, concrete cushion is made to become as a whole with foundation ring basis, increase the firm of its entirety, add the lateral pressure resistant ability on whole foundation ring basis, also increase the bearing capacity on whole basis, make basis more firm.
Accompanying drawing explanation
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the sectional structure chart of foundation ring Rock Bolt Foundation described in the embodiment of the present invention 1;
Fig. 2 be in Fig. 1 A to structure chart;
Fig. 3 is the sectional structure chart of foundation ring Rock Bolt Foundation described in the embodiment of the present invention 2;
Fig. 4 is the sectional structure chart of foundation ring Rock Bolt Foundation described in the embodiment of the present invention 3;
Fig. 5 be in Fig. 4 B to structure chart.
In figure:
1, foundation ring basis;2, concrete cushion;3, foundation ring;4, transverse steel;5, longitudinal reinforcement;6, steel hoop;7, interior steel form;8, middle steel form;9, outer steel mould plate;10, high-strength grouting post;11, anchor pole;12, transverse support bar.
Detailed description of the invention
Embodiment 1
nullSuch as Fig. 1、Shown in 2,A kind of foundation ring Rock Bolt Foundation described in the embodiment of the present invention,Including the foundation ring basis 1 formed by concrete C35-C40 label and the concrete cushion 2 being sleeved on outside it,Described foundation ring basis 1 is columned solid construction with concrete cushion 2,The central upper portion place on described foundation ring basis 1 is provided with foundation ring 3,It is equipped with steel reinforcement cage inside and outside described foundation ring 3,Described steel reinforcement cage includes and the described fixing transverse steel 4 being connected of foundation ring 3,The junction at middle part and foundation ring 3 that transverse steel 4 runs through foundation ring 3 and transverse steel 4 is welded to connect,The two ends of described transverse steel 4 all vertically connect longitudinal reinforcement 5,Transverse steel 4 is perpendicular to the net plane of foundation ring 3 with longitudinal reinforcement 5 composition,Also include multiple steel hoop 6,The plurality of steel hoop 6 is set in outside and the inner side of described longitudinal reinforcement 5,Described transverse steel 4、It is welded to connect between longitudinal reinforcement 5 and steel hoop 6.At the inside and outside welded reinforcement cage of foundation ring 3, increase the connectivity of foundation ring 3 and base concrete, increase the depth of burying of foundation ring 3 simultaneously, improve the steadiness of foundation ring 3.
Middle steel form 8 it is provided with between described steel reinforcement cage and concrete cushion 2, the inner side of described foundation ring 3 is provided with the interior steel form 7 being inlaid in steel reinforcement cage, between described interior steel form 7 and middle steel form 8, inside interior steel form 7, all grouting has high-strength concrete, and described middle steel form 8 is bellows with interior steel form 7.Middle steel form 8 instead of traditional plank sheathing with interior steel form 7, improve concrete strength and the integral rigidity on foundation ring basis 1, reducing concrete and produce the probability in crack, in wherein, steel form 8 provides installing hole with interior steel form 7 for reinforcement installation, plays the effect of spacer bar.
The outer sheath of described concrete cushion 2 is equiped with outer steel mould plate 9, and outer steel mould plate 9 instead of traditional plank sheathing, improves concrete strength and the integral rigidity of concrete cushion 2, reduces concrete and produces the probability in crack, and described outer steel mould plate 9 is bellows.Inside and outside foundation ring, all increase bellows so that foundation ring is under the parcel of inner/outer tube, by adding the mode of the depth of burying of foundation ring, increase the breakout capacity of foundation ring, improve the lateral pressure resistant ability of foundation ring surrounding concrete.
Embodiment 2
As shown in Figure 3, a kind of foundation ring Rock Bolt Foundation described in the embodiment of the present invention, including the foundation ring basis 1 formed by concrete C35-C40 label and the concrete cushion 2 being sleeved on outside it, described foundation ring basis 1 is columned solid construction with concrete cushion 2, the central upper portion place on described foundation ring basis 1 is provided with foundation ring 3, is equipped with steel reinforcement cage inside and outside described foundation ring 3.
Middle steel form 8 it is provided with between described steel reinforcement cage and concrete cushion 2, the inner side of described foundation ring 3 is provided with the interior steel form 7 being inlaid in steel reinforcement cage, between described interior steel form 7 and middle steel form 8, in interior steel form 7, all grouting has high-strength concrete, described middle steel form 8 is bellows with interior steel form 7, the outer sheath of described concrete cushion 2 is equiped with outer steel mould plate 9, and interior steel form 7, middle steel form 8 all instead of traditional plank sheathing with outer steel mould plate 9.
Described concrete cushion 2 is provided with along the equally distributed multiple high-strength grouting posts 10 of its bottom surface extension, described high-strength grouting post 10 vertically connects described concrete cushion 2, being coaxially disposed an anchor pole 11 in described high-strength grouting post 10, described anchor pole 11 is run through described concrete cushion 2 and is fixed in described high-strength grouting post 10 by pressure grouting.
The present embodiment 2 and embodiment 1 be distinctive in that by by be provided with on the bottom surface of concrete cushion high-strength grouting post 10 and with the anchor pole 11 that is coaxially disposed in high-strength grouting post 10, the connection on basis and bottom surface can be increased, can in the limited place of boundary of works area thus this foundation ring can be realized, suitable in the area that the boundary of works area such as mountain region, rock is limited, increase the bearing capacity on whole basis, making basis more firm, total cost is low, widely applicable.
Embodiment 3
As shown in Figure 4,5, a kind of foundation ring Rock Bolt Foundation described in the embodiment of the present invention, including the foundation ring basis 1 formed by concrete C35-C40 label and the concrete cushion 2 being sleeved on outside it, described foundation ring basis 1 is columned solid construction with concrete cushion 2, the central upper portion place on described foundation ring basis 1 is provided with foundation ring 3, is equipped with steel reinforcement cage inside and outside described foundation ring 3.
Middle steel form 8 it is provided with between described steel reinforcement cage and concrete cushion 2, the inner side of described foundation ring 3 is provided with the interior steel form 7 being inlaid in steel reinforcement cage, between described interior steel form 7 and middle steel form 8, in interior steel form 7, all grouting has high-strength concrete, and described middle steel form 8 is bellows with interior steel form 7.Middle steel form 8 instead of traditional plank sheathing with interior steel form 7, improve concrete strength and the integral rigidity on foundation ring basis 1, reducing concrete and produce the probability in crack, wherein steel form 8 provides installing hole with interior steel form 7 for reinforcement installation, plays the effect of spacer bar.
The outer sheath of described concrete cushion 2 is equiped with outer steel mould plate 9, and outer steel mould plate 9 instead of traditional plank sheathing, improves concrete strength and the integral rigidity of concrete cushion 2, reduces concrete and produces the probability in crack, and described outer steel mould plate 9 is bellows.
Described concrete cushion 2 is provided with along the equally distributed high-strength grouting post 10 of its bottom surface extension, described high-strength grouting post 10 vertically connects described concrete cushion 2, being coaxially disposed an anchor pole 11 in described high-strength grouting post 10, described anchor pole 11 is run through described concrete cushion 2 and is fixed in described high-strength grouting post 10 by pressure grouting.
Being additionally provided with some transverse support bar 12 extending transversely through described interior steel form 7, described transverse support bar 12 has from inside to outside sequentially passed through interior steel form 7, foundation ring 3, middle steel form 8, concrete cushion 2, outer steel mould plate 9.
The present embodiment 3 and embodiment 2 are distinctive in that by being provided with some transverse support bar extending transversely through interior steel form, add the fastening between outer firm template and concrete cushion, simultaneously outer just template again can the thrust of dispensing support bar, concrete cushion is made to become as a whole with foundation ring basis, increase the firm of its entirety, add the lateral pressure resistant ability on whole foundation ring basis, also increase the bearing capacity on whole basis, make basis more firm.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under the enlightenment of the present invention; no matter but in its shape or structure, do any change, every have same or like with the application like technical scheme, all fall within protection scope of the present invention.

Claims (8)

1. a foundation ring Rock Bolt Foundation, including formed by concrete foundation ring basis be sleeved on the concrete cushion outside it, described foundation ring basis is columned solid construction with concrete cushion, it is characterized in that: the top on described foundation ring basis is provided with foundation ring, steel reinforcement cage all it is fixed with inside and outside described foundation ring, middle steel form it is provided with between described steel reinforcement cage and concrete cushion, the inner side setting-in of described steel reinforcement cage is provided with interior steel form, and the outer sheath of described concrete cushion is equiped with outer steel mould plate.
2. foundation ring Rock Bolt Foundation according to claim 1, it is characterized in that: described concrete cushion is provided with along the equally distributed high-strength grouting post of its bottom surface extension, described high-strength grouting post vertically connects described concrete cushion, being coaxially disposed an anchor pole in described high-strength grouting post, described anchor pole is run through described concrete cushion and is fixed in described high-strength grouting post by pressure grouting.
3. foundation ring Rock Bolt Foundation according to claim 1, it is characterized in that: be additionally provided with some around the described equally distributed transverse support bar of interior steel form, described transverse support bar extends transversely through described interior steel form, and described transverse support bar has from inside to outside sequentially passed through interior steel form, foundation ring, middle steel form, concrete cushion, outer steel mould plate.
4. foundation ring Rock Bolt Foundation according to claim 1, it is characterised in that: described steel reinforcement cage includes the transverse steel being welded to connect with described foundation ring, and the two ends of described transverse steel all vertically connect longitudinal reinforcement.
5. foundation ring Rock Bolt Foundation according to claim 4, it is characterised in that: also including multiple steel hoop, the plurality of steel hoop is set in outside and the inner side of described longitudinal reinforcement.
6. foundation ring Rock Bolt Foundation according to claim 5, it is characterised in that: all it is welded to connect between described transverse steel, longitudinal reinforcement, multiple steel hoop.
7. foundation ring Rock Bolt Foundation according to claim 1, it is characterised in that: described outer steel mould plate, middle steel form and interior steel form are bellows.
8. foundation ring Rock Bolt Foundation according to claim 1, it is characterised in that: described cylinder cushion cap is the structure of the concrete support of C35-C40 label.
CN201610090069.7A 2016-02-17 2016-02-17 Foundation ring Rock Bolt Foundation Active CN105756077B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN105756077B CN105756077B (en) 2018-01-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638733A (en) * 2017-03-07 2017-05-10 长安大学 Method for reinforcing fan foundation through additionally-arranged horizontal steel bars
CN108797633A (en) * 2018-06-12 2018-11-13 国网四川省电力公司技能培训中心 A kind of isolated island formula high-voltage line column foot protection structure and its construction method
CN109723079A (en) * 2019-01-17 2019-05-07 黄贺明 A kind of prefabricated wind power foundation of ultra-high performance concrete

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202787296U (en) * 2012-03-27 2013-03-13 辽宁电力勘测设计院 Foundation structure of anchor pole blower fan
CN103147456A (en) * 2013-03-08 2013-06-12 中节能风力发电股份有限公司 Prestressed combination pile structure and construction method thereof
CN104532873A (en) * 2014-12-31 2015-04-22 霍宏斌 Rock anchor rod foundation structure
CN204456167U (en) * 2015-02-12 2015-07-08 四川电力设计咨询有限责任公司 Prestress anchoraging blower foundation
CN104963355A (en) * 2015-06-24 2015-10-07 同济大学 Classification anchoring type draught fan rock anchor rod assembly
CN204715393U (en) * 2015-03-17 2015-10-21 石健 The long anchor rod type foundation structure of rock
CN105155572A (en) * 2015-10-20 2015-12-16 中国科学院武汉岩土力学研究所 Cast-in-place pre-stressed anchor cable draught fan foundation system and construction method thereof
CN205399464U (en) * 2016-02-17 2016-07-27 北京健安诚岩土工程有限公司 Foundation ring rock stock basis

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202787296U (en) * 2012-03-27 2013-03-13 辽宁电力勘测设计院 Foundation structure of anchor pole blower fan
CN103147456A (en) * 2013-03-08 2013-06-12 中节能风力发电股份有限公司 Prestressed combination pile structure and construction method thereof
CN104532873A (en) * 2014-12-31 2015-04-22 霍宏斌 Rock anchor rod foundation structure
CN204456167U (en) * 2015-02-12 2015-07-08 四川电力设计咨询有限责任公司 Prestress anchoraging blower foundation
CN204715393U (en) * 2015-03-17 2015-10-21 石健 The long anchor rod type foundation structure of rock
CN104963355A (en) * 2015-06-24 2015-10-07 同济大学 Classification anchoring type draught fan rock anchor rod assembly
CN105155572A (en) * 2015-10-20 2015-12-16 中国科学院武汉岩土力学研究所 Cast-in-place pre-stressed anchor cable draught fan foundation system and construction method thereof
CN205399464U (en) * 2016-02-17 2016-07-27 北京健安诚岩土工程有限公司 Foundation ring rock stock basis

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638733A (en) * 2017-03-07 2017-05-10 长安大学 Method for reinforcing fan foundation through additionally-arranged horizontal steel bars
CN108797633A (en) * 2018-06-12 2018-11-13 国网四川省电力公司技能培训中心 A kind of isolated island formula high-voltage line column foot protection structure and its construction method
CN109723079A (en) * 2019-01-17 2019-05-07 黄贺明 A kind of prefabricated wind power foundation of ultra-high performance concrete

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