CN105369820A - Prefabricated steel structure fan base - Google Patents
Prefabricated steel structure fan base Download PDFInfo
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- CN105369820A CN105369820A CN201510865470.9A CN201510865470A CN105369820A CN 105369820 A CN105369820 A CN 105369820A CN 201510865470 A CN201510865470 A CN 201510865470A CN 105369820 A CN105369820 A CN 105369820A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000003466 welding Methods 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000009365 direct transmission Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 239000002689 soil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
本发明涉及一种预制装配式钢结构风机基础，由多片平面桁架沿基础环圆周辐射状布置，平面桁架的数量可根据地质条件和承载要求进行调整，每片平面桁架由上下弦杆、斜杆和竖杆组成，上下弦杆之间通过斜杆和竖杆采用螺栓或焊接连接而成；相邻的竖杆之间形成的节间数量和斜杆布置方向可根据基础环直径和受力要求进行调整；当采用螺栓连接时，上下弦杆采用双拼的槽钢或角钢，斜杆和竖杆采用双拼角钢；采用焊接连接时，上下弦杆采用双拼角钢、双拼槽钢等中任一种，斜杆和竖杆采用单(双)拼角钢、单（双）拼槽钢、双拼槽钢等中任一种。本发明中平面桁架的构件之间通过焊接连接时，根据不同部位构件受力性能的差异，可选用不同的型钢产品，可扩大本发明的适用范围，用于一般风场建设中。
The invention relates to a prefabricated steel structure fan foundation, which is composed of a plurality of planar trusses arranged radially along the circumference of the foundation ring, the number of planar trusses can be adjusted according to geological conditions and bearing requirements, and each planar truss is composed of upper and lower chords, inclined Composed of rods and vertical rods, the upper and lower chords are connected by bolts or welding through diagonal rods and vertical rods; the number of internodes formed between adjacent vertical rods and the direction of diagonal rod arrangement can be determined according to the diameter of the foundation ring and the force Adjustment is required; when bolt connection is used, the upper and lower chords use double-piece channel steel or angle steel, and the oblique and vertical bars use double-piece angle steel; when welding connection is used, the upper and lower chords use double-piece angle steel, double-piece channel steel, etc. Any one of them, the inclined bar and the vertical bar adopt any one of single (double) angle steel, single (double) channel steel, double channel steel, etc. When the components of the planar truss in the present invention are connected by welding, different profile steel products can be selected according to the difference in the stress performance of the components in different parts, which can expand the scope of application of the present invention and be used in general wind field construction.
Description
技术领域 technical field
本发明属于结构工程技术领域，具体涉及一种预制装配式钢结构风机基础，可有效缩短风机基础施工工期，降低工程造价，解决部分偏远山区因商品混凝土运输困难钢筋混凝土风机基础质量难以保障的问题。 The invention belongs to the technical field of structural engineering, and specifically relates to a prefabricated steel structure fan foundation, which can effectively shorten the construction period of the fan foundation, reduce the project cost, and solve the problem that the quality of the reinforced concrete fan foundation is difficult to guarantee in some remote mountainous areas due to the difficulty in transporting commercial concrete. .
背景技术 Background technique
随着人口数量的增加，能源和环境成为当前人们面临的两大主要问题。一方面，传统化石燃料的不断消耗促使人们寻求新的能源作为替代；另一方面，传统的化石燃料会导致空气污染和二氧化碳含量增加，引起温室效应。风力发电具有清洁无污染，单机容量大，经济效益和社会效益良好的特点，是目前最具发展潜力的新能源之一。风电机组运行时，作用在叶片上的空气动力、惯性力和弹性力等交变荷载通过塔架传到基础，使得基础的受力非常复杂。 With the increase of population, energy and environment have become the two main problems that people are facing. On the one hand, the continuous consumption of traditional fossil fuels prompts people to seek new energy as an alternative; on the other hand, traditional fossil fuels will lead to increased air pollution and carbon dioxide levels, causing the greenhouse effect. Wind power has the characteristics of clean and pollution-free, large unit capacity, good economic and social benefits, and is currently one of the most promising new energy sources. When the wind turbine is running, the alternating loads such as aerodynamic force, inertial force and elastic force acting on the blades are transmitted to the foundation through the tower, which makes the stress on the foundation very complicated.
常见风机基础一般均为现浇钢筋混凝土结构，有埋入式基础环和预应力锚栓两种形式。埋入式基础环基础是将与底部塔筒通过法兰相连的基础环埋入混凝土中，基础环与混凝土共同受力、协同工作，当达到一定的荷载后，由于钢环与混凝土两种材料性能不同，钢环与混凝土间变形不能协调一致，将产生较明显滑移。预应力锚栓基础则是将锚栓笼预埋在混凝土基础中，塔架底部塔筒通过预埋锚栓与混凝土基础相连，通过对锚栓施加预应力保证连接部位刚度。这两种常见风机基础形式均需在现场浇筑混凝土，对于建设于偏远山区的风场，受运输条件的限制不能采用商品混凝土，而现场搅拌的混凝土受很多因素影响，难以保障质量。 Common wind turbine foundations are generally cast-in-place reinforced concrete structures, and there are two forms: embedded foundation rings and prestressed anchor bolts. The embedded foundation ring foundation is to embed the foundation ring connected with the bottom tower through the flange into the concrete. The foundation ring and the concrete are jointly stressed and work together. The performance is different, and the deformation between the steel ring and the concrete cannot be coordinated, and obvious slippage will occur. The prestressed anchor bolt foundation is to pre-embed the anchor bolt cage in the concrete foundation, and the tower tube at the bottom of the tower is connected to the concrete foundation through the pre-embedded anchor bolts, and the rigidity of the connection part is guaranteed by applying prestress to the anchor bolts. Both of these two common wind turbine foundation forms require on-site pouring of concrete. For wind farms built in remote mountainous areas, commercial concrete cannot be used due to transportation conditions, and the concrete mixed on site is affected by many factors, making it difficult to guarantee the quality.
发明内容 Contents of the invention
本发明的目的在于提供一种预制装配式钢结构风机基础，用于解决偏远山区因现场搅拌混凝土带来的混凝土基础质量问题，也可以用于缩短施工工期、降低基础造价。 The purpose of the present invention is to provide a prefabricated steel structure fan foundation, which is used to solve the quality problem of concrete foundation caused by mixing concrete on site in remote mountainous areas, and can also be used to shorten the construction period and reduce the foundation cost.
本发明提出的预制装配式钢结构风机基础，由多片平面桁架和基础环10组成，多片平面桁架沿基础环10圆周辐射状布置，平面桁架的数量可根据地质条件和承载要求进行调整，每片平面桁架由上弦杆1、下弦杆2、斜杆3和竖杆4组成，上弦杆1和下弦杆２之间通过斜杆3和竖杆４采用螺栓或焊接连接而成；相邻的竖杆4之间形成的节间数量和斜杆布置方向可根据基础环直径和受力要求进行调整；当上弦杆1和下弦杆２之间通过斜杆3和竖杆４采用螺栓连接时，上弦杆1和下弦杆２采用双拼的槽钢或者角钢，斜杆和竖杆采用双拼角钢；上弦杆1和下弦杆２之间通过斜杆3和竖杆４采用焊接连接时，上弦杆1和下弦杆2采用双拼角钢、双拼槽钢、钢管或者H型钢中任一种，斜杆和竖杆可采用单（双拼）角钢、单（双拼）槽钢、钢管或者H型钢（图4）中任一种；每片平面桁架与基础环10通过螺栓连接。 The prefabricated steel structure wind turbine foundation proposed by the present invention is composed of a plurality of planar trusses and a foundation ring 10, and the plurality of planar trusses are arranged radially along the circumference of the foundation ring 10, and the number of planar trusses can be adjusted according to geological conditions and bearing requirements. Each planar truss is composed of upper chord 1, lower chord 2, oblique rod 3 and vertical rod 4, and the upper chord 1 and lower chord 2 are connected by bolts or welding through oblique rod 3 and vertical rod 4; The number of internodes formed between the vertical bars 4 and the arrangement direction of the inclined bars can be adjusted according to the diameter of the foundation ring and the force requirements; when the upper chord 1 and the lower chord 2 are connected by bolts through the inclined bar 3 and the vertical bar 4, The upper chord 1 and the lower chord 2 adopt double channel steel or angle steel, and the oblique rod and the vertical rod adopt double angle steel; when the upper chord 1 and the lower chord 2 are connected by welding through the oblique rod 3 and the vertical rod 4, the 1 and bottom chord 2 adopt any one of double angle steel, double channel steel, steel pipe or H-shaped steel, and the inclined bar and vertical bar can adopt single (double) angle steel, single (double) channel steel, steel pipe or H-shaped steel (Fig. 4) any one; each planar truss is connected to the foundation ring 10 by bolts.
本发明中，基础环10内设有下弦杆内支撑环梁8，所述下弦杆内支撑环梁8与下弦杆2位于同一平面。 In the present invention, the base ring 10 is provided with a lower chord inner support ring beam 8 , and the lower chord inner support ring beam 8 is located on the same plane as the lower chord 2 .
本发明中，基础环10内设有上弦杆内支撑环梁7，所述上弦杆内支撑环梁7两侧通过基础环10的环壁连接上弦杆1。 In the present invention, the top chord inner support ring beam 7 is arranged inside the foundation ring 10 , and both sides of the top chord inner support ring beam 7 are connected to the top chord 1 through the ring wall of the foundation ring 10 .
本发明中，基础环10环壁塔筒内相对于上弦杆1的位置采用上弦杆内支撑5加劲，基础环10环壁塔筒内相对于下弦杆2的位置采用下弦杆内支撑6加劲。 In the present invention, the position of the base ring 10 ring wall tower relative to the upper chord 1 is reinforced by the upper chord inner support 5, and the position of the base ring 10 ring wall tower relative to the lower chord 2 is reinforced by the lower chord inner support 6.
本发明中，基础环10可根据运输需要分为若干段（如两段等），相邻的段之间通过法兰或双剪连接，基础环10的环壁可开孔以便于穿电缆。 In the present invention, the basic ring 10 can be divided into several sections (such as two sections) according to transportation needs, and the adjacent sections are connected by flanges or double shears, and the ring wall of the basic ring 10 can have holes for passing cables.
本发明中，上弦杆内支撑5内侧支撑于上弦杆内支撑环梁7上，下弦杆内支撑6内侧支撑于下弦杆内支撑环梁8上。 In the present invention, the inner support 5 of the upper chord is supported on the inner support ring beam 7 of the upper chord, and the inner support 6 of the lower chord is supported on the inner support ring beam 8 of the lower chord.
本发明中，下弦杆2的下翼缘上均匀焊接有若干个焊钉11，下弦杆2的下翼缘及下弦杆内支撑6的下翼缘均布置有定位螺杆12，定位螺杆12的数量及具体位置根据现场安装要求确定，定位螺杆12比焊钉11长度稍长，便于现场调平。 In the present invention, several welding studs 11 are evenly welded on the lower flange of the lower chord 2, and the lower flange of the lower chord 2 and the lower flange of the inner support 6 of the lower chord are all arranged with positioning screws 12, and the number of positioning screws 12 And the specific position is determined according to the on-site installation requirements, and the positioning screw 12 is slightly longer than the welding stud 11, which is convenient for on-site leveling.
本发明中，多片平面桁架底部现场浇筑混凝土底板13，其厚度和配筋根据刚度和承载力要求由计算确定，混凝土底板13底部为素混凝土垫层14。 In the present invention, the concrete bottom slab 13 is poured on site at the bottom of the multi-piece planar truss, and its thickness and reinforcement are determined by calculation according to the rigidity and bearing capacity requirements. The bottom of the concrete bottom slab 13 is a plain concrete cushion 14 .
本发明中，基础环10环壁下方黏贴有软质材料15，以减小由基础环直接传递到下部混凝土的集中力。 In the present invention, a soft material 15 is pasted under the ring wall of the foundation ring 10 to reduce the concentrated force directly transmitted from the foundation ring to the lower concrete.
本发明中，相邻平面桁架的上弦杆1之间通过上弦杆侧向支撑9连接，以维持平面桁架的上弦杆平面外稳定，侧向支撑可采用双拼角钢、双拼槽钢、H型或钢管等型材。 In the present invention, the upper chords 1 of adjacent planar trusses are connected by upper chord lateral supports 9 to maintain the stability of the upper chords of the planar trusses outside the plane. Or steel pipe and other profiles.
本发明中所有构件安装完毕后，可根据设计需求采用素土、素混凝土或毛石混凝土回填以满足基础抗倾覆要求（含基础环内侧）。 After all components in the present invention are installed, plain soil, plain concrete or rubble concrete can be used to backfill according to design requirements to meet the anti-overturning requirements of the foundation (including the inner side of the foundation ring).
本发明中所有构件截面尺寸均应根据基础受力通过计算确定，需要满足强度、稳定和刚度要求，所有钢构件根据腐蚀环境进行防腐处理。 All component cross-sectional dimensions in the present invention should be determined by calculation according to the force of the foundation, and need to meet the requirements of strength, stability and rigidity, and all steel components should be treated according to the corrosion environment.
本发明平面桁架的构件通过螺栓连接时，构件的制作和加工可在工厂完成，散件运到现场后拼装，不仅可以解决部分偏远山区因商品混凝土运输困难而造成的混凝土质量难以保障的问题，还可以缩短工期、降低施工成本。本发明中平面桁架的构件之间通过焊接连接时，根据不同部位构件受力性能的差异，可选用不同的型钢产品，可扩大本发明的适用范围，用于一般风场建设中。 When the components of the plane truss of the present invention are connected by bolts, the production and processing of the components can be completed in the factory, and the parts can be assembled after being transported to the site, which can not only solve the problem that the quality of the concrete is difficult to guarantee due to the difficulty in the transportation of commercial concrete in some remote mountainous areas, It can also shorten the construction period and reduce the construction cost. When the components of the planar truss in the present invention are connected by welding, different profile steel products can be selected according to the difference in the stress performance of the components at different parts, which can expand the scope of application of the present invention and be used in general wind field construction.
附图说明 Description of drawings
图1为本发明下弦杆平面图。 Fig. 1 is a plane view of the lower chord of the present invention.
图2为本发明上弦杆平面图。 Fig. 2 is a plane view of the upper chord of the present invention.
图3为本发明剖面形式一（螺栓连接）。 Fig. 3 is a cross-sectional form 1 (bolt connection) of the present invention.
图4为本发明剖面形式二（焊接）。 Fig. 4 is the cross section form 2 (welding) of the present invention.
图中标号：1.上弦杆；2.下弦杆；3.斜杆；4.竖杆；5.上弦杆内支撑；6.下弦杆内支撑；7.上弦杆内支撑环梁；8.下弦杆内支撑环梁；9.上弦杆侧向支撑；10.基础环；11.焊钉；12.定位螺杆；13.混凝土底板；14.垫层;15.软质材料。 Symbols in the figure: 1. Top chord; 2. Bottom chord; 3. Inclined bar; 4. Vertical bar; 5. Inner support of the upper chord; 6. Inner support of the lower chord; 9. Lateral support of upper chord; 10. Foundation ring; 11. Welding stud; 12. Positioning screw; 13. Concrete floor; 14. Cushion; 15. Soft material.
具体实施方式 detailed description
下面通过优选实施例和附图对本发明技术方案作进一步的说明。 The technical solutions of the present invention will be further described below through preferred embodiments and accompanying drawings.
实施例１：如图１－４所示，由多片平面桁架沿基础环10塔筒圆周辐射状布置而成，平面桁架的数量可根据地质条件和承载要求进行调整，平面桁架由上弦杆1、下弦杆2、斜杆3和竖杆4通过螺栓（或焊接）连接而成，相邻竖杆４之间构成的节间数量和斜杆布置方向可根据基础直径和受力要求进行调整。螺栓连接时上、下弦杆采用双拼的槽钢或者角钢，斜杆和竖杆采用双拼角钢（图3）；焊接连接时，上、下弦杆可采用双拼角钢、双拼槽钢、钢管或者H型钢，斜杆和竖杆可采用单（双拼）角钢、单（双拼）槽钢、钢管或者H型钢（图4）。螺栓连接可在工厂或者现场拼接为平面桁架后安装就位，焊接连接在工厂完成。每片平面桁架与基础环10通过螺栓连接，基础环10内壁相对于上弦杆1和下弦杆2的位置分别采用上弦杆内支撑5、下弦杆内支撑6加劲，基础环10可根据运输需要分为两段，用法兰或双剪连接，侧壁可开孔以便于穿电缆。上弦杆内支撑5内侧支撑于上弦杆内支撑环梁7上，下弦杆内支撑6内侧支撑于下弦杆内支撑环梁8上。下弦杆1下翼缘上焊接一定间距的焊钉11，沿下弦杆2翼缘范围及下弦内支撑6的下翼缘布置定位螺杆12，数量及具体位置根据现场安装要求确定。定位螺杆12比焊钉11长度稍长，便于现场调平。平面桁架底部现场浇筑混凝土底板13，其厚度和配筋根据刚度和承载力要求由计算确定，混凝土底板13下部为素混凝土垫层14。在基础环10管壁下方黏贴软质材料15，以减小由基础环直接传递到下部混凝土的集中力。两相邻平面桁架的上弦杆1之间布置上弦侧向支撑9维持平面桁架上弦杆平面外稳定，侧向支撑可采用双拼角钢、双拼槽钢、H型或钢管等型材。本发明中所有构件安装完毕后，可根据设计需求采用素土、素混凝土或毛石混凝土回填以满足基础抗倾覆要求（含基础环内侧）。 Embodiment 1: As shown in Figure 1-4, it is composed of multiple planar trusses arranged radially along the circumference of the foundation ring 10. The number of planar trusses can be adjusted according to geological conditions and bearing requirements. , lower chord 2, oblique rod 3 and vertical rod 4 are connected by bolts (or welding), and the number of internodes formed between adjacent vertical rods 4 and the arrangement direction of the oblique rods can be adjusted according to the foundation diameter and force requirements. When the bolt is connected, the upper and lower chords use double-joint channel steel or angle steel, and the oblique and vertical bars use double-piece angle steel (Figure 3); when welding, the upper and lower chords can use double-piece angle steel, double-piece channel steel, steel pipe Or H-shaped steel, oblique bars and vertical bars can use single (double) angle steel, single (double) channel steel, steel pipe or H-shaped steel (Figure 4). The bolted connection can be installed in place after being spliced into a planar truss in the factory or on site, and the welded connection is completed in the factory. Each planar truss is connected to the foundation ring 10 by bolts, and the positions of the inner wall of the foundation ring 10 relative to the upper chord 1 and the lower chord 2 are reinforced by the upper chord inner support 5 and the lower chord inner support 6 respectively, and the foundation ring 10 can be divided according to transportation needs. It is two sections, connected by flange or double shears, and the side wall can be opened to facilitate the passage of cables. The inner support 5 of the upper chord is supported on the inner support ring beam 7 of the upper chord, and the inner support 6 of the lower chord is supported on the inner support ring beam 8 of the lower chord. Weld studs 11 at a certain distance on the lower flange of the lower chord 1. Positioning screws 12 are arranged along the flange range of the lower chord 2 and the lower flange of the inner support 6 of the lower chord. The quantity and specific positions are determined according to the site installation requirements. The positioning screw 12 is slightly longer than the welding stud 11, which is convenient for on-site leveling. Concrete bottom slab 13 is poured on site at the bottom of the plane truss, and its thickness and reinforcement are determined by calculation according to the requirements of stiffness and bearing capacity. The lower part of concrete bottom slab 13 is plain concrete cushion 14 . Paste the soft material 15 below the pipe wall of the base ring 10 to reduce the concentrated force directly transmitted from the base ring to the lower concrete. Upper chord lateral supports 9 are arranged between the upper chords 1 of two adjacent planar trusses to maintain the stability of the upper chords of the planar trusses out of plane. After all components in the present invention are installed, plain soil, plain concrete or rubble concrete can be used to backfill according to design requirements to meet the anti-overturning requirements of the foundation (including the inner side of the foundation ring).
将上述装置用于偏远山区因商品混凝土运输困难而导致混凝土基础质量难以保障的问题，用于一般风场建设中可缩短施工工期，降低施工成本。实际使用时，应先根据拟建风机的型号、环境及荷载情况、场地土承载力等设计基础的底面直径、桁架的片数和混凝土底板13的厚度，平面桁架的高度及构件的尺寸应按悬臂桁架根据其承担的荷载经计算确定。现场实施时，先施工素混凝土垫层14，然后将基础环10吊装就位，并采用定位螺栓12调平。对于采用螺栓连接的平面桁架，可根据施工图位置原地拼装，并通过位于下弦杆下翼缘的定位螺杆12调平，拼装过程中及时安装上弦杆侧向支撑9维持平面桁架的平面外稳定；平面桁架及基础环调平就位后，浇筑混凝土底板13。混凝土养护到设计强度后，对预制装配式基础进行素土回填。对于采用焊接连接的平面桁架，平面桁架的焊接工作在工厂完成，整片桁架运到现场后通过吊装就位，与基础环10通过螺栓连接，其余过程同螺栓连接的平面桁架。至此，完成本发明的安装工作。 The above-mentioned device is used for the problem that the quality of the concrete foundation is difficult to guarantee due to the difficulty in the transportation of commercial concrete in remote mountainous areas, and it can shorten the construction period and reduce the construction cost when used in the construction of general wind farms. In actual use, the diameter of the bottom surface of the foundation, the number of trusses and the thickness of the concrete bottom plate 13 should be designed according to the model of the proposed fan, the environment and load conditions, and the bearing capacity of the site soil. The height of the plane truss and the size of the components should be according to The cantilever truss is calculated and determined according to the load it bears. During on-site implementation, the plain concrete cushion 14 is constructed first, then the foundation ring 10 is hoisted in place, and the positioning bolts 12 are used for leveling. For plane trusses connected by bolts, they can be assembled in situ according to the location of the construction drawing, and leveled through the positioning screw 12 located on the lower flange of the lower chord, and the upper chord lateral support 9 is installed in time during the assembly process to maintain the out-of-plane stability of the plane truss After the plane truss and the foundation ring are leveled and in place, the concrete bottom plate 13 is poured. After the concrete is cured to the design strength, the prefabricated foundation shall be backfilled with plain soil. For the plane trusses connected by welding, the welding work of the plane trusses is completed in the factory, and the entire truss is transported to the site and placed in place by hoisting, and connected to the foundation ring 10 by bolts, and the rest of the process is the same as the plane trusses connected by bolts. So far, the installation work of the present invention is completed.
Claims (10)
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| CN108547312A (en) * | 2018-05-30 | 2018-09-18 | 江苏融宝达新能源科技有限公司 | The blower foundation of steel truss structure |
| CN111411642A (en) * | 2020-03-27 | 2020-07-14 | 上海电气风电集团股份有限公司 | Ribbed plate type fan foundation |
| CN111456069A (en) * | 2019-01-18 | 2020-07-28 | 深圳国金电力新能设计院有限公司 | Bracing piece and have its a tower section of thick bamboo basis |
| CN113417309A (en) * | 2021-07-15 | 2021-09-21 | 中广核(福建)风力发电有限公司 | Offshore wind power assembled steel structure fan cushion cap |
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| CN113417309A (en) * | 2021-07-15 | 2021-09-21 | 中广核(福建)风力发电有限公司 | Offshore wind power assembled steel structure fan cushion cap |
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Application publication date: 20160302 |