CN103074903B - Pile casing type cast-in-place concrete pile for fan foundation in soft foundation of shoal or quicksand area - Google Patents

Pile casing type cast-in-place concrete pile for fan foundation in soft foundation of shoal or quicksand area Download PDF

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Publication number
CN103074903B
CN103074903B CN201310030299.0A CN201310030299A CN103074903B CN 103074903 B CN103074903 B CN 103074903B CN 201310030299 A CN201310030299 A CN 201310030299A CN 103074903 B CN103074903 B CN 103074903B
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place concrete
cast
pile
foundation
concrete pile
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CN201310030299.0A
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CN103074903A (en
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刘蔚
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中国电建集团西北勘测设计研究院有限公司
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Abstract

The invention relates to a pile casting type cast-in-place concrete pile for a fan foundation in a soft foundation of a shoal or quicksand area. The pile casting type cast-in-place concrete pile is characterized by at least comprising excircle concrete cast-in-place concrete piles (2) and incircle cast-in-place concrete piles (3) which are arranged in a circular foundation (5), wherein the cast-in-place concrete piles are constructed around the incircle of a first radius and the excircle of a second radius at intervals by taking a construction center point as a center. According to the pile casting type cast-in-place concrete pile for the fan foundation in the shoal foundation of the shoal or quicksand area, pile position layout on the circular foundation is adopted, the layout of the incircle and excircle meets the design specification requirements and is also fused with design experiences and skills, and therefore the layout scheme has the advantages of utilizing engineering piles, meeting the test pile requirements and saving the work amount.

Description

Beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile

Technical field

The present invention relates to a kind of blower foundation casing technique, particularly beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile.

Background technology

Hainan Province is located in the Nanhai area, belongs to tropical moistening monsoon marine climate, take high temperature and rainy as principal character, and extreme wind speed 59.0m/s, belongs to II class wind field, and wind field geological conditions belongs to coastal drift sand region, and Site Soil is weak soil, complex geologic conditions.Due to coastal by typhoon influence, its blower fan, pylon, blower foundation etc. all need special reinforcement to design, to make blower foundation safe and reliable.

In coastal drift sand soft soil area and in II class wind field and typhoon regional construction wind energy turbine set, all do not have technological borrowing both at home and abroad, particularly large to installed capacity blower fan, complex geologic conditions, Site Soil are weak soil, propose very high requirement to construction.

Summary of the invention

The object of this invention is to provide a kind of good manufacturability, safety is high, cost rational beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile.

The object of the present invention is achieved like this, beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile, it is characterized in that: which comprises at least and be arranged in cylindrical cast-in-place concrete pile in circular foundation and inner circle cast-in-place concrete pile, centered by central point of constructing, around the inner circle of the first radius and the cylindrical interval building concrete castinplace pile of the second radius.

The inner circle of the first described radius evenly builds the inner circle cast-in-place concrete pile of 4 decile central angles distributions, and the central angle that two adjacent inner circle cast-in-place concrete piles and central point are formed is 90 degree; The cylindrical of the second radius evenly builds the cylindrical cast-in-place concrete pile of 12 decile central angles distributions, and the central angle that two adjacent cylindrical cast-in-place concrete piles and central point are formed is 30 degree.

It is 90 degree fan-shaped that described two adjacent inner circle cast-in-place concrete piles and central point define central angle, and the fan shape center bisectrix position extended to corresponding to the second radius is one of them cylindrical cast-in-place concrete pile.

Distance between the first described radius and the second radius is between 3.0 ~ 3.5m.

The first described radius is 3100mm.

The second described radius is 6500mm.

Be connected to become the first structure by bed course between described cylindrical cast-in-place concrete pile and inner circle cast-in-place concrete pile, cylindrical cast-in-place concrete pile is positioned at below bed course, and inner circle cast-in-place concrete pile extends to more than original ground level through bed course.

Described bed course is positioned at the position of 2.5 ~ 3.0m below original ground level,

Described circular foundation comprises concrete spread footing, upper mounting plate, prostheses section, blower foundation ring, bed course is fixedly connected with blower foundation ring, bed course overlaps with blower foundation Ring current distribution, determine center position, prostheses of constructing around blower foundation ring section, the upright position, outer ring of annular center core segment and the center superposition of each inner circle cast-in-place concrete pile; The surrounding of prostheses section is concrete spread footing, and prostheses section is connected with concrete spread footing steel concrete; The external diameter of concrete spread footing from core segment center, center is less than or equal to bed course external diameter.

Described prostheses section upper surface is upper mounting plate, and upper mounting plate position exceeds original ground level, and upper mounting plate exceeds concrete spread footing place concrete and fills and leads up formation circular foundation.

The invention has the beneficial effects as follows: this beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile is the pile layout that have employed on circular foundation, the layout of inner ring and outer ring is except meeting the requirement of design specifications, also have design experiences and skill, this arrangement make use of engineering pile to meet test pile requirement and in turn save engineering quantity.

Accompanying drawing explanation

Below in conjunction with embodiment accompanying drawing, the present invention is further described:

Fig. 1 is the lateral view of this cast-in-place concrete pile;

Fig. 2 is the position distribution schematic diagram of this cast-in-place concrete pile.

In figure: 1, central point; 2, cylindrical cast-in-place concrete pile; 3, inner circle cast-in-place concrete pile; 4, bed course; 5, circular foundation; 6, concrete spread footing; 7, upper mounting plate; 8, prostheses section; 9, blower foundation ring.

Detailed description of the invention

As shown in Figure 1, this beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile is made up of the cylindrical cast-in-place concrete pile 2 be arranged in circular foundation 5 and inner circle cast-in-place concrete pile 3.

Behind the position of selected circular foundation 5, centered by central point 1 place that constructs, around the inner circle interval of the first radius building inner circle cast-in-place concrete pile 3, simultaneously around the cylindrical interval of the second radius building cylindrical cast-in-place concrete pile 2.

As shown in Figure 2, wherein the inner circle of the first radius evenly builds the inner circle cast-in-place concrete pile 3 of 4 decile central angles distribution, and the central angle that namely two adjacent inner circle cast-in-place concrete piles 3 and central point 1 are formed is 90 degree; The cylindrical of the second radius evenly builds the cylindrical cast-in-place concrete pile 2 of 12 decile central angles distributions, and the central angle that namely two adjacent cylindrical cast-in-place concrete piles 2 and central point 1 are formed is 30 degree.

It is 90 degree fan-shaped that two adjacent inner circle cast-in-place concrete piles 3 and central point 1 define central angle, the fan shape center bisectrix position extended to corresponding to the second radius is one of them cylindrical cast-in-place concrete pile 2, the i.e. central angle of the adjacent inner circle cast-in-place concrete pile 3 of this cylindrical cast-in-place concrete pile 2 decile two, this cylindrical cast-in-place concrete pile 2 is 45 degree with two any one corresponding central angle of adjacent inner circle cast-in-place concrete pile 3, one of them cylindrical cast-in-place concrete pile 2 position determines that other cylindrical cast-in-place concrete pile 2 rear pours in 30 degree of central angles around the second radius and central point 1.

First radius is 3100mm.

Second radius is 6500mm.

The first structure is connected to become by bed course 4 between cylindrical cast-in-place concrete pile 2 and inner circle cast-in-place concrete pile 3, the position of 2.5 ~ 3.0m below bed course 4 original ground level, cylindrical cast-in-place concrete pile 2 is positioned at below bed course 4, and inner circle cast-in-place concrete pile 3 extends to more than original ground level through bed course 4.

The key of such layout has stronger adaptive capacity to beach drift sand soft foundation, effective resistance to plucking, the anti-tilt capability improving basis, make full use of that excellent second circle stake of establishing arranges with the position of central point, distance, side direction frictional resistance and the end resistance of stake are enclosed in the performance second of maximum capacity, effectively bear top dynamic load and typhoon load, the distance of first lap stake and the second circle stake, between 3.0 ~ 3.5m, makes overall structure firm.

This beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile is the pile layout that have employed on circular foundation, the layout of inner ring and outer ring is except meeting the requirement of design specifications, also have design experiences and skill, this arrangement make use of engineering pile to meet test pile requirement and in turn save engineering quantity.

The successful Application of this Project design, for the basic engineering design of China's wind energy turbine set in drift sand soft soil area have accumulated experience.

Embodiment 2

Circular foundation 5 in above-described embodiment comprises concrete spread footing 6, upper mounting plate 7, prostheses section 8, blower foundation ring 9.Bed course 4 is fixedly connected with blower foundation ring 9, the center superposition of bed course 4 and blower foundation ring 9, determine central point 1 position, blower foundation ring 9 surrounding construction prostheses section 8, the upright position, outer ring of annular center core segment 8 and the center superposition of each inner circle cast-in-place concrete pile 3; The surrounding of prostheses section 8 is concrete spread footing 6, and prostheses section 8 is connected with concrete spread footing 6 steel concrete; The external diameter of concrete spread footing 6 from center core segment 8 center is less than or equal to bed course 4 external diameter.

Prostheses section 8 upper surface is upper mounting plate 7, and upper mounting plate 7 position exceeds original ground level, and upper mounting plate 7 exceeds concrete spread footing 6 place concrete and fills and leads up formation circular foundation 5 attractive in appearance.

The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.

Claims (5)

1. beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile, it is characterized in that: which comprises at least and be arranged in cylindrical cast-in-place concrete pile (2) in circular foundation (5) and inner circle cast-in-place concrete pile (3), centered by central point of constructing, around the inner circle of the first radius and the cylindrical interval building concrete castinplace pile of the second radius; The inner circle of the first described radius evenly builds the inner circle cast-in-place concrete pile (3) of 4 decile central angles distributions, and the central angle that two adjacent inner circle cast-in-place concrete piles (3) and central point (1) are formed is 90 degree; The cylindrical of the second radius evenly builds the cylindrical cast-in-place concrete pile (2) of 12 decile central angles distributions, and the central angle that two adjacent cylindrical cast-in-place concrete piles (2) and central point (1) are formed is 30 degree; It is 90 degree fan-shaped that described two adjacent inner circle cast-in-place concrete piles (3) and central point (1) define central angle, and the fan shape center bisectrix position extended to corresponding to the second radius is one of them cylindrical cast-in-place concrete pile (2); Distance between the first described radius and the second radius is between 3.0 ~ 3.5m; Described circular foundation (5) comprises concrete spread footing (6), upper mounting plate (7), prostheses section (8), blower foundation ring (9), bed course (4) is fixedly connected with blower foundation ring (9), the center superposition of bed course (4) and blower foundation ring (9), determine central point (1) position, blower foundation ring (9) is construction prostheses section (8) around, the upright position, outer ring of annular center core segment (8) and the center superposition of each inner circle cast-in-place concrete pile (3); The surrounding of prostheses section (8) is concrete spread footing (6), and prostheses section (8) is connected with concrete spread footing (6) steel concrete; The external diameter of concrete spread footing (6) from center core segment (8) center is less than or equal to bed course (4) external diameter;
The first structure is connected to become by bed course (4) between described cylindrical cast-in-place concrete pile (2) and inner circle cast-in-place concrete pile (3), cylindrical cast-in-place concrete pile (2) is positioned at bed course (4) below, and inner circle cast-in-place concrete pile (3) extends to more than original ground level through bed course (4).
2. beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile according to claim 1, is characterized in that: the first described radius is 3100mm.
3. beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile according to claim 1, is characterized in that: the second described radius is 6500mm.
4. beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile according to claim 1, is characterized in that: described bed course (4) is positioned at the position of 2.5 ~ 3.0m below original ground level.
5. beach drift sand soft foundation blower foundation pile casing type cast-in-place concrete pile according to claim 1, it is characterized in that: described prostheses section (8) upper surface is upper mounting plate (7), upper mounting plate (7) position exceeds original ground level, and upper mounting plate (7) exceeds concrete spread footing (6) place concrete and fills and leads up formation circular foundation (5).
CN201310030299.0A 2013-01-28 2013-01-28 Pile casing type cast-in-place concrete pile for fan foundation in soft foundation of shoal or quicksand area CN103074903B (en)

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CN104060624A (en) * 2014-06-30 2014-09-24 温州电力设计有限公司 Method for arranging pile foundations in complex soft soil foundation
CN104695460A (en) * 2014-11-27 2015-06-10 中铁三局集团有限公司 Construction method for arranging asymmetric support system in cross section direction of small-radius curve cast-in-place beam
CN105604082A (en) * 2016-03-10 2016-05-25 上海勘测设计研究院有限公司 Beam-type wind turbine pile foundation in soft soil foundation
CN106049523B (en) * 2016-07-18 2019-01-18 三一重型能源装备有限公司 Land blower foundation, foundation construction method and blower
CN108797630A (en) * 2018-06-29 2018-11-13 广东省水利电力勘测设计研究院 A kind of muck foundation sluice foundation construction method

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