CN203755778U - Assembly external pre-stress reactive powder concrete wind power tower - Google Patents
Assembly external pre-stress reactive powder concrete wind power tower Download PDFInfo
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- CN203755778U CN203755778U CN201420142723.0U CN201420142723U CN203755778U CN 203755778 U CN203755778 U CN 203755778U CN 201420142723 U CN201420142723 U CN 201420142723U CN 203755778 U CN203755778 U CN 203755778U
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- 239000004567 concrete Substances 0.000 title abstract description 26
- 239000000843 powder Substances 0.000 title abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000013521 mastic Substances 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000003829 resin cement Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Abstract
本实用新型涉及一种装配式体外预应力活性粉末混凝土风电塔架，其包括基础和若干段塔筒，所述基础为钢筋混凝土基础，其中预埋基础环；所述每段塔筒均由活性粉末混凝土浇筑而成，呈锥筒形；每一段塔筒的内侧沿纵向设有若干预应力钢筋；所述预应力钢筋张拉后上端锚固在塔筒的上端面内侧，下端与基础环锚固连接。所述预应力钢筋沿塔筒内壁均匀等距分布。本实用新型结构合理，制造成本低，便于运输和装配，承载能力高，耐久性和抗裂性好，使用寿命长，维护简单。
The utility model relates to an assembled external prestressed active powder concrete wind power tower, which includes a foundation and several tower sections, the foundation is a reinforced concrete foundation, and the foundation ring is pre-buried; each section of the tower is composed of an active It is made of powder concrete pouring and is in the shape of a cone; the inner side of each section of the tower is provided with a number of prestressed steel bars along the longitudinal direction; the upper end of the prestressed steel bar is anchored on the inner side of the upper end surface of the tower after tensioning, and the lower end is anchored to the foundation ring. . The prestressed steel bars are evenly and equidistantly distributed along the inner wall of the tower tube. The utility model has reasonable structure, low manufacturing cost, convenient transportation and assembly, high bearing capacity, good durability and crack resistance, long service life and simple maintenance.
Description
技术领域 technical field
本实用新型属于风力发电设备，特别涉及一种装配式体外预应力活性粉末混凝土风电塔架。 The utility model belongs to wind power generation equipment, in particular to an assembled external prestressed active powder concrete wind power tower.
背景技术 Background technique
目前，能源紧缺成为各国面临的一大问题，带动了风能技术的开发利用。风力发电成为全球各国家发展新能源战略的首选。在政府的大力支持下，我国的风力发电已形成规模，风电机组也正在往大型化发展，对风电塔架的需求量也在不断加大。而目前通用的风电塔架几乎全为钢结构，对钢材需求量大、制造成本高，同时由于钢结构的防腐问题，使后期维护的工作量巨大，增加使用过程中的维护成本。同时，混凝土风电塔架的应用相对较少，仅在小型风电机塔架上有少量应用。采用传统预应力混凝土风电塔架，混凝土强度较低，制成的风电塔筒壁厚较大，结构笨重、不便于运输和吊装。风电工程需要新型材料和新的结构设计，为工程提供满足使用要求，经济合理的新型塔架。 At present, the shortage of energy has become a major problem facing all countries, which has driven the development and utilization of wind energy technology. Wind power has become the first choice for countries all over the world to develop new energy strategies. With the strong support of the government, my country's wind power generation has formed a scale, and the wind turbines are also developing towards large-scale development, and the demand for wind power towers is also increasing. At present, the general wind power towers are almost all steel structures, which require a large amount of steel and high manufacturing costs. At the same time, due to the corrosion of steel structures, the workload of later maintenance is huge, which increases the maintenance cost during use. At the same time, the application of concrete wind power towers is relatively small, and there are only a small number of applications in small wind power towers. The traditional prestressed concrete wind power tower is adopted, the strength of the concrete is low, and the wall thickness of the wind power tower is relatively thick, the structure is bulky, and it is not convenient for transportation and hoisting. Wind power projects require new materials and new structural designs to provide projects with economical and reasonable new towers that meet the requirements of use.
发明内容 Contents of the invention
本实用新型所要解决的技术问题是克服现有技术的不足，提供结构合理，便于运输和装配，制造成本和使用维护成本均较低的装配式体外预应力活性粉末混凝土风电塔架。 The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide an assembled external prestressed active powder concrete wind power tower with reasonable structure, convenient transportation and assembly, and low manufacturing cost and maintenance cost.
本实用新型解决上述技术问题所采用的技术方案是：一种装配式体外预应力活性粉末混凝土风电塔架，其包括基础和若干段塔筒，其特征在于：所述基础为钢筋混凝土基础，其中预埋基础环；所述每段塔筒均由活性粉末混凝土浇筑而成，呈锥筒形；每一段塔筒的内侧沿纵向设有若干预应力钢筋；所述预应力钢筋张拉后上端锚固在塔筒的上端面内侧，下端与基础环锚固连接。 The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: an assembled external prestressed active powder concrete wind power tower, which includes a foundation and several tower sections, and is characterized in that: the foundation is a reinforced concrete foundation, wherein Pre-buried foundation ring; each section of the tower tube is made of active powder concrete poured into a cone shape; the inner side of each section of the tower tube is provided with a number of prestressed steel bars along the longitudinal direction; the upper end of the prestressed steel bars is anchored after stretching On the inner side of the upper end surface of the tower tube, the lower end is anchored and connected with the foundation ring.
所述预应力钢筋沿塔筒内壁均匀分布。 The prestressed steel bars are uniformly distributed along the inner wall of the tower.
所述底段塔筒和中间段塔筒上端面内侧轴向设有若干锚固连接块，所述底段塔筒和中间段塔筒内侧设置的预应力钢筋上端分别锚固连接在对应的锚固连接块上，下端锚固于基础环上。 The inner side of the upper end face of the bottom section tower and the middle section tower is axially provided with several anchor connection blocks, and the upper ends of the prestressed steel bars arranged on the inner side of the bottom section tower and the middle section tower are respectively anchored and connected to the corresponding anchor connection blocks. The upper and lower ends are anchored on the base ring.
所述顶段塔筒上端设有固定风力发电机组的钢制法兰，顶段塔筒内侧的预应力钢筋上端直接锚固在该钢制法兰上，该预应力钢筋沿顶段塔筒和下部所有塔筒内壁向下，下端锚固在基础环上。 The upper end of the top section of the tower is provided with a steel flange for fixing the wind turbine, and the upper end of the prestressed steel bars inside the top section of the tower is directly anchored on the steel flange, and the prestressed steel bars are installed along the top section of the tower and the lower part of the tower. The inner walls of all the towers are downward, and the lower ends are anchored on the foundation ring.
所述塔筒分瓣预制，拼装时瓣与瓣之间通过活性粉末混凝土粘结，并以波纹钢筋连接增强。 The tower tube is prefabricated in separate parts, and when assembled, the parts are bonded by active powder concrete and reinforced by corrugated steel bars.
所述塔筒中还设有若干纵向非预应力钢筋和环向非预应力钢筋，所述环向非预应力筋布置在纵向非预应力钢筋的内外两侧。 The tower is also provided with a number of longitudinal non-prestressed steel bars and circumferential non-prestressed steel bars, and the circumferential non-prestressed bars are arranged on the inner and outer sides of the longitudinal non-prestressed steel bars.
所述塔筒上下段之间通过树脂胶泥粘结。 The upper and lower sections of the tower are bonded by resin cement.
本实用新型可以在工厂分段预制活性粉末混凝土塔筒，每段塔筒分为整体预制或分瓣预制，运输到安装现场进行预应力张拉和装配。对照现有技术，本实用新型结构简单，承载能力高，适用于各种设备及风电场地环境，更能满足大型风电设备的要求，可以大大减少加工和维护成本，降低施工难度，方便运输和吊装，并且能提高抗裂性能和使用寿命。使混凝土更加密实且抗裂性能好，具有强度高、耐久性好、使用寿命长、轻质稳定等特点，能减轻塔架自重，减少运输成本，增加抗腐蚀性能。 The utility model can prefabricate the active powder concrete tower barrel in sections in the factory, and each section of the tower barrel is divided into integral prefabrication or split prefabrication, and is transported to the installation site for prestress tensioning and assembly. Compared with the prior art, the utility model has simple structure and high bearing capacity, is suitable for various equipment and wind power site environment, and can better meet the requirements of large-scale wind power equipment, can greatly reduce processing and maintenance costs, reduce construction difficulty, and facilitate transportation and hoisting , and can improve crack resistance and service life. The concrete is denser and has better crack resistance. It has the characteristics of high strength, good durability, long service life, light weight and stability. It can reduce the weight of the tower, reduce transportation costs, and increase corrosion resistance.
附图说明 Description of drawings
下面结合附图和实施例对本实用新型进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is further described.
图1是本实用新型组成结构示意图。 Fig. 1 is a schematic diagram of the composition and structure of the utility model.
图2是本实用新型顶段塔筒上端部结构示意图。 Fig. 2 is a schematic diagram of the structure of the upper end of the top tower of the utility model.
图3是本实用新型底段塔筒与基础环连接示意图。 Fig. 3 is a schematic diagram of the connection between the bottom tower tube and the foundation ring of the utility model.
图4是本实用新型中间段塔筒上端面平面示意图。 Fig. 4 is a schematic plan view of the upper end surface of the middle tower of the utility model.
图5是本实用新型底段塔筒上端部结构示意图。 Fig. 5 is a schematic diagram of the structure of the upper end of the bottom tower of the utility model.
图6是本实用新型分瓣塔筒相邻瓣之间连接处横截面示意图。 Fig. 6 is a schematic cross-sectional view of the junction between adjacent petals of the split tower of the present invention.
图7是本实用新型中分瓣塔筒相邻瓣之间连接处纵剖面示意图。 Fig. 7 is a schematic diagram of the longitudinal section of the connection between the adjacent petals of the split tower in the utility model.
图中的标号是：1.基础，2.底段塔筒，3.中间段塔筒，4.顶段塔筒，5.钢制法兰，6.基础环，7.预应力钢筋，8.预应力钢筋，9.预应力钢筋，10.活性粉末混凝土，11.锚具，12.锚固连接块，13.波纹钢筋，14.拼接缝。 The numbers in the figure are: 1. Foundation, 2. Bottom tower, 3. Middle tower, 4. Top tower, 5. Steel flange, 6. Foundation ring, 7. Prestressed steel bar, 8 .Prestressed steel bars, 9. Prestressed steel bars, 10. Active powder concrete, 11. Anchors, 12. Anchor connection blocks, 13. Corrugated steel bars, 14. Splicing joints.
具体实施方式 Detailed ways
下面结合附图和实施例对本实用新型作进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is further described.
从图1中可以看出，一种装配式体外预应力活性粉末混凝土风电塔架，其包括基础1和若干段塔筒。所述基础1为钢筋混凝土基础，在其中预埋基础环6。基础环6可以为钢制法兰。塔筒包括底段塔筒2、中间段塔筒3、顶段塔筒4。中间段塔筒3可以为一段，也可以为多段。所述每段塔筒均由活性粉末混凝土10浇筑而成，呈锥筒形。底段塔筒2固定于基础环6上。各段塔筒从下向上依次对接组装，塔筒直径及壁厚从下往上逐渐减小，组成的整个锥筒型塔架。对接时用树脂粘结剂粘结。顶段塔筒4的上端预埋钢制法兰5，与风力发电机相连。 It can be seen from Fig. 1 that an assembled externally prestressed active powder concrete wind power tower includes a foundation 1 and several tower sections. The foundation 1 is a reinforced concrete foundation, in which a foundation ring 6 is pre-embedded. The base ring 6 can be a steel flange. The tower includes a bottom tower 2 , a middle tower 3 , and a top tower 4 . The tower tube 3 in the middle section can be one section or multiple sections. Each section of the tower tube is poured from active powder concrete 10 and is in the shape of a cone. The bottom tower tube 2 is fixed on the foundation ring 6 . The towers of each section are docked and assembled sequentially from bottom to top, and the diameter and wall thickness of the towers gradually decrease from bottom to top to form the entire cone-shaped tower. Bond with resin adhesive when docking. A steel flange 5 is pre-embedded in the upper end of the tower tube 4 at the top section, and is connected with the wind power generator.
从图1、图2、图3中可以看出，本实用新型每一段塔筒的内侧沿纵向设有设有若干预应力钢筋。所述预应力钢筋沿塔筒内壁均匀等距分布。所述预应力钢筋张拉后上端锚固在塔筒的上端面内侧，下端与基础环6锚固连接。具体是：底段塔筒2内侧设有预应力钢筋7，底段塔筒预应力钢筋7仅布置在底段塔筒2内侧。预应力钢筋7张拉后上端锚固在底段塔筒2的上端面内侧，下端通过锚具11与基础环6锚固连接，如图3所示。中间段塔筒3内侧设有预应力钢筋8，预应力钢筋8布置在中间段塔筒3和底段塔筒2内侧，预应力钢筋8张拉后上端锚固在中间段塔筒3的上端面内侧，下端通过锚具11与基础环6锚固连接。顶段塔筒4内侧也设有预应力钢筋9，顶段塔筒4的预应力钢筋9为沿塔架长度方向全长配置，其布置在顶段塔筒4、中间段塔筒3和底段塔筒2内侧。预应力钢筋9张拉后上端通过锚具11锚固在顶段塔筒4的钢制法兰5上，下端通过锚具11与基础环6锚固连接，如图2所示。 As can be seen from Fig. 1, Fig. 2 and Fig. 3, the inner side of each section of the tower tube of the utility model is provided with several prestressed steel bars along the longitudinal direction. The prestressed steel bars are evenly and equidistantly distributed along the inner wall of the tower tube. After stretching, the upper end of the prestressed steel bar is anchored on the inner side of the upper end surface of the tower, and the lower end is anchored to the foundation ring 6 . Specifically, the inner side of the tower tube 2 at the bottom section is provided with prestressed steel bars 7 , and the prestressed steel bars 7 at the bottom section tower tube are only arranged inside the tower tube 2 at the bottom section. After the prestressed steel bar 7 is stretched, the upper end is anchored on the inner side of the upper end surface of the bottom section tower tube 2, and the lower end is anchored and connected to the foundation ring 6 through the anchor 11, as shown in FIG. 3 . The inner side of the tower tube 3 in the middle section is provided with prestressed steel bars 8, the prestressed steel bars 8 are arranged inside the tower tube 3 in the middle section and the tower tube 2 in the bottom section, and the upper ends of the 8 prestressed steel bars are anchored to the upper end surface of the tower tube 3 in the middle section On the inner side, the lower end is anchored and connected with the base ring 6 through the anchor 11 . The inner side of the top tower 4 is also provided with prestressed steel bars 9, the prestressed steel bars 9 of the top tower 4 are arranged along the entire length of the tower, and are arranged on the top tower 4, the middle tower 3 and the bottom. The inner side of the section tower tube 2. After the prestressed steel bar 9 is stretched, the upper end is anchored on the steel flange 5 of the top tower 4 through the anchorage 11, and the lower end is anchored and connected with the foundation ring 6 through the anchorage 11, as shown in FIG. 2 .
从图4、图5中可以看出，所述底段塔筒2和中间段塔筒3上端面内侧轴向设有若干锚固连接块12。锚固连接块12与相应的塔筒同时浇筑成型，内部做钢筋加密处理，以保证混凝土不发生破坏。所述底段塔筒2和中间段塔筒3内侧设置的预应力钢筋7和预应力钢筋8上端通过锚具11分别锚固连接在对应的锚固连接块12上，沿塔筒内侧向下，下端锚固于基础环上。 It can be seen from Fig. 4 and Fig. 5 that a number of anchoring connection blocks 12 are arranged axially on the inner side of the upper end surfaces of the bottom section tower tube 2 and the middle section tower tube 3 . The anchor connection block 12 is poured and formed simultaneously with the corresponding tower, and the reinforcement is densified inside to ensure that the concrete will not be damaged. The upper ends of the prestressed steel bars 7 and the prestressed steel bars 8 provided on the inside of the bottom tower 2 and the middle tower 3 are respectively anchored and connected to the corresponding anchor connection blocks 12 through the anchorage 11, and the lower end is downward along the inner side of the tower. Anchor to base ring.
从图2中还可以看出，所述顶段塔筒4上端设有固定风力发电机组的钢制法兰5，顶段塔筒内侧的预应力钢筋9上端直接锚固在该钢制法兰5上，该预应力钢筋9沿顶段塔筒和下部所有塔筒内壁向下，下端锚固在基础环6上。 It can also be seen from Fig. 2 that the upper end of the top tower 4 is provided with a steel flange 5 for fixing the wind turbine, and the upper end of the prestressed steel bar 9 inside the top tower is directly anchored to the steel flange 5. Above, the prestressed steel bar 9 runs downward along the inner walls of the top tower and all the lower towers, and the lower end is anchored on the foundation ring 6 .
本实用新型大口径的塔筒可以分瓣预制，现场拼装。瓣与瓣之间沿纵向边缘处预留拼接缝14，拼装时瓣与瓣之间纵向对准拼接缝14，通过活性粉末混凝土粘结，并以波纹钢筋13连接增强，拼装完成后灌浆胶合。如图6和图7所示。 The large-diameter tower tube of the utility model can be prefabricated by splitting and assembled on site. Joints 14 are reserved along the longitudinal edges between the petals, and the joints 14 are aligned longitudinally between the petals during assembly, bonded by active powder concrete, and reinforced with corrugated steel bars 13, and grouted after the assembly is completed glued. As shown in Figure 6 and Figure 7.
所述塔筒中还设有若干纵向非预应力钢筋和环向非预应力钢筋，所述环向非预应力筋布置在纵向非预应力钢筋的内外两侧。所述塔筒上下段之间通过树脂胶泥粘结。 The tower is also provided with a number of longitudinal non-prestressed steel bars and circumferential non-prestressed steel bars, and the circumferential non-prestressed bars are arranged on the inner and outer sides of the longitudinal non-prestressed steel bars. The upper and lower sections of the tower are bonded by resin cement.
本实用新型组成塔架的分段塔筒均采用活性粉末混凝土制成。活性粉末混凝土以硅酸盐系水泥为胶结料，以石英砂为骨料，同时加入玄武岩纤维，使得混凝土更加密实，增加了混凝土的抗裂性能，具有高强度、高耐久性、使用寿命长、轻质稳定等特点，采用新型活性粉末混凝土与一般混凝土风电塔架相比自重减轻，大大减少运输成本，同时增加了风电塔架的抗腐蚀性能。 The segmented towers forming the tower frame of the utility model are all made of active powder concrete. Reactive powder concrete uses Portland cement as the cement, quartz sand as the aggregate, and basalt fiber at the same time to make the concrete more compact and increase the crack resistance of the concrete. It has high strength, high durability, and long service life. Lightweight and stable, the use of new reactive powder concrete reduces the weight compared with ordinary concrete wind power towers, greatly reduces transportation costs, and increases the corrosion resistance of wind power towers.
整个装配式体外预应力活性粉末混凝土风电塔架以新型活性粉末混凝土塔筒为主体，通过体外预应力张拉技术对塔筒现场施加预应力。其中的分段塔筒均在工厂整体预制或分瓣预制，塔筒段整体预制采用立式成型工艺浇筑，分瓣预制采用卧式预制成型工艺。现场拼装。装配时，将底段塔筒吊装并放置在基础环6上，底段塔筒2的预应力钢筋7的上下两端分别锚固在锚固连接块12和基础环6上。在预应力钢筋锚固后所述的锚具11均需用同等强度的活性粉末混凝土密封。分瓣塔筒的接缝及时插入波纹钢筋并灌浆连接。后续的中间段塔筒吊装并放置在底段塔筒上，定位后固定，张拉体外预应力钢筋，钢筋上下两端分别锚固在所在塔筒的锚固连接块和基础环6上。塔筒之间以高强度树脂胶泥粘结。其余塔筒按上述方法依次进行连接，组合成本实用新型的塔架。 The whole prefabricated externally prestressed reactive powder concrete wind power tower is based on a new type of reactive powder concrete tower, and prestressed on the tower through external prestressed tensioning technology. The segmented towers are all prefabricated in the factory as a whole or split prefabricated. The overall prefabrication of the tower section adopts the vertical molding process, and the split prefabrication adopts the horizontal prefabricated molding process. Assembled on site. During assembly, the bottom section tower is hoisted and placed on the foundation ring 6, and the upper and lower ends of the prestressed steel bar 7 of the bottom section tower tube 2 are respectively anchored on the anchor connection block 12 and the foundation ring 6. After the prestressed steel bars are anchored, the anchors 11 all need to be sealed with active powder concrete of the same strength. The joints of the split tower tube are inserted into corrugated steel bars in time and connected by grouting. The subsequent middle tower is hoisted and placed on the bottom tower, fixed after positioning, and the external prestressed steel bars are stretched. The towers are bonded with high-strength resin cement. All the other tower tubes are connected sequentially by the above-mentioned method to form a tower frame of the utility model.
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