Heliostat supporting device for rock foundation
By adopting a pile foundation system of rock anchors and piers in the heliostat field, combined with a lattice-type composite column, the problem of difficult construction on rock foundations was solved, and a high-efficiency, low-cost heliostat support device was realized.
Patent Information
- Application Number
- CN202422970065.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-03
AI Technical Summary
The bedrock in the heliostat field is shallow and hard, which makes the commonly used pile foundation drilling methods difficult, resulting in high construction costs and slow progress.
The pile foundation adopts a rock anchor and pile cap form, which forms an integral connection by inserting anchors into the rock foundation and pouring solidification material, and is supported by a lattice-type composite column, replacing the traditional concrete pipe pile or concrete cast-in-place pile.
The construction process is simple, efficient, and low-cost, and it is more stable and has greater load-bearing capacity than traditional methods.
Smart Images
Figure CN223537829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heliostat technology, specifically to a heliostat support device for rock foundations. Background Technology
[0002] A heliostat system is an optical device that tracks the sun and focuses and reflects solar radiation onto a heat-absorbing device in a fixed direction, thereby obtaining high-temperature thermal energy. A heliostat system includes the heliostat and its frame forming the mirror structure, a rotation control device (rotary reducer), and a control system. The mirror structure and rotation control device are generally supported by ground-mounted columns and pile foundations. The pile foundation of a heliostat is typically buried at a depth of 2.5 to 3.5 meters. Excavation of the foundation pit usually uses specialized machinery for drilling, such as long auger drilling or rotary drilling. There are two main types of columns and pile foundations: one uses integrated prestressed concrete pipe piles as both pile foundations and columns; the other is a combination of cast-in-place concrete pile foundations and steel columns, with the steel columns typically being solid-web circular tubes.
[0003] However, since heliostat fields typically cover a large area, approximately 1 to 3 square kilometers, and some areas within the site often have shallow bedrock and hard rock strata, the commonly used pile foundation drilling methods are difficult, the drilling speed is slow, the equipment requirements are high, and the wear and tear on the drill bit is large, which greatly increases the construction cost and affects the construction progress. Utility Model Content
[0004] To address the problems mentioned in the background section, this utility model provides a novel heliostat support device, which is suitable for situations where the bedrock is shallow and the rock strata are hard in rock foundations. It changes the current form of pile foundations using concrete pipe piles or cast-in-place concrete piles, and adopts anchor rods that can form an integral part with the bedrock and a pile cap on the top surface of the bedrock as the pile foundation. It has the advantages of simple construction process, high construction efficiency and low cost.
[0005] The present invention adopts the following technical solution: a heliostat support device for rock foundation, comprising rock anchor rods, a support platform and a column, wherein multiple rock anchor rods are used to be inserted and fixed in multiple anchor holes opened in the target area of the rock foundation, and the support platform is set in the target area at the top of the rock foundation;
[0006] The top of the rock anchor extends into an anchor hole and is fixedly connected to the pier; the column is fixedly installed on the top surface of the pier.
[0007] Furthermore, the diameter of the anchor hole is larger than the outer diameter of the rock anchor rod, and a solidifying material is injected into the gap between the anchor hole and the rock anchor rod to fix the rock anchor rod to the rock foundation.
[0008] Furthermore, the support platform has pre-drilled anchor bolt channel holes matching the number of rock anchor bolts. The top of the rock anchor bolt extends out of the anchor bolt channel holes. A steel pad is fitted on the top surface of the support platform and the outside of the rock anchor bolt. Threads are pre-drilled on the top of the rock anchor bolt, and a first nut is screwed onto the thread of the rock anchor bolt to fix the rock anchor bolt to the support platform.
[0009] Furthermore, multiple rock anchor bolts are arranged in an array, and the rock anchor bolts are set vertically or inclined relative to the axis of the bearing platform.
[0010] Furthermore, the rock anchor bolt is a hot-rolled ribbed steel bar or an expanded-base anchor bolt.
[0011] Furthermore, the column is a solid-web column or a lattice-type composite column.
[0012] Furthermore, the lattice-type composite column includes column segments and supporting steel plates. Multiple column segments are distributed in a circumferential array, and the multiple column segments are set vertically or inclined relative to the axis of the support platform. The supporting steel plates are fixedly connected to the top of the multiple column segments and are used for fixed installation with the rotation control device of the heliostat system. The bottom end of the column segments is fixedly connected to the support platform through a fixed connection structure.
[0013] Furthermore, the fixed connection structure includes a column base plate and anchor bolts. The column base plate is fixedly installed at the bottom end of the column segment. Multiple fixing through holes are evenly distributed on the column base plate. The anchor bolts are fixed inside the bearing platform. The top of the anchor bolts extends out of the top surface of the bearing platform and has a thread pre-reserved on the top of the anchor bolts. After the tops of the multiple anchor bolts pass through the fixing through holes, a second nut is screwed onto the thread of the anchor bolt to fix the column segment to the bearing platform.
[0014] Furthermore, at least one rock anchor is provided at the bottom end of each of the column segments, and an anchor channel hole is reserved on the bearing platform. The top of the rock anchor extends out of the anchor channel hole, and a thread is reserved on the top of the rock anchor. A steel pad is fitted on the top surface of the bearing platform and the outside of the rock anchor. A first nut is screwed onto the thread of the rock anchor to fix the rock anchor to the bearing platform.
[0015] A nut receiving hole with a diameter larger than the outer diameter of the first nut is opened in the middle of the column base plate, and a passage hole corresponding to the position of the fixing through hole is opened on the steel pad plate; after the top ends of the multiple anchor bolts pass through the passage hole and the fixing through hole respectively, a second nut is screwed on the thread of the anchor bolt to fix the column limb to the foundation.
[0016] The heliostat support device in this patent uses a rock anchor and pile cap as its pile foundation. Anchor holes are pre-drilled in the target area on the top surface of the rock foundation using an anchor drilling machine, and the rock anchors are inserted and fixed in the anchor holes. By injecting a curing material, the rock anchors and the rock foundation are integrated. The pile cap can be made of precast concrete or cast-in-place concrete and is fixedly connected to the pile cap by the rock anchors, making the pile foundation more stable. Compared with current pile foundations, the pile foundation using rock anchors and pile caps has the advantages of simple construction process, high construction efficiency, and low cost.
[0017] The columns in this patent preferably adopt a lattice-type composite column form. Under the premise of the same material consumption, the lattice type has higher load-bearing capacity and stronger stability compared with the solid web steel structure. Attached Figure Description
[0018] Appendix Figure 1 This is a perspective view of the heliostat support device in this utility model.
[0019] Appendix Figure 2 This is the front view of the heliostat support device in this utility model.
[0020] Appendix Figure 3 This is a schematic diagram of the connection between a single rock anchor rod 1 and a single column segment 3 in this utility model. In order to clearly illustrate the structure of each component and the connection relationship between each component, the support platform 2 is not shown in the figure.
[0021] Appendix Figure 4 This is a schematic diagram of the connection between the rock anchor 1 and the steel pad 6 in this utility model.
[0022] Appendix Figure 5 This is a schematic diagram of the connection between the anchor bolt 5 and the column limb 3 in this utility model. To clearly illustrate the structure of the anchor bolt 5, the support platform 2 is not shown in the figure.
[0023] Appendix Figure 6 This is a schematic diagram showing the connection between the rock anchor rod 1, the steel pad 6, and the column base plate 7 in this utility model. To clearly illustrate the structure of each component and the connection relationship between them, the column limb 3 is not shown in the figure.
[0024] Appendix Figure 7 This is a schematic diagram of the mirror structure and rotation control device of the heliostat system installed on the heliostat support device described in this utility model.
[0025] The reference numerals in the attached drawings are explained as follows: 1. Rock anchor bolt; 2. Foundation; 3. Column branch; 4. Support steel plate; 5. Anchor bolt; 6. Steel pad; 7. Column base plate; 7. Nut receiving hole; 71. First nut; 8. Second nut; 9. Detailed Implementation
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The content of the utility model will be further explained below in conjunction with the drawings:
[0027] Example
[0028] Refer to the instruction manual appendix Figure 1-6 A heliostat support device for rock foundations includes a rock anchor 1, a foundation 2, and a lattice-type combined column.
[0029] Rock anchor 1 is a hot-rolled ribbed steel bar or an expanded-base anchor bolt. Three anchor holes are pre-drilled in the target area on the top surface of the rock foundation (the target area refers to the area where the heliostat pile foundation is to be installed). The anchor holes are formed by drilling and cleaning the rock inside the rock with an anchor drilling machine. The three anchor holes are arranged in a circular array and are inclined inward.
[0030] The diameter of the anchor hole is larger than the outer diameter of the rock anchor rod 1. A rock anchor rod 1 is inserted and fixed in each anchor hole. The top of the rock anchor rod 1 extends out of the anchor hole, so that the three rock anchor rods 1 are also inclined inward. A curing material is poured into the gap between the anchor hole and the rock anchor rod 1. The curing material can be cement mortar or fine stone concrete. After the cement mortar or fine stone concrete is cured, the rock anchor rod 1 is fixedly connected to the rock foundation.
[0031] Although the attached drawings only show one scenario where the three rock anchor rods 1 are inclined inwards, in another feasible embodiment, the three rock anchor rods 1 can also be arranged vertically, that is, the three anchor holes are vertically opened inside the rock. The vertical arrangement of the three rock anchor rods 1 and the three anchor holes can be inferred from the scenario shown in the attached drawings, without requiring any creative effort, and does not affect the installation position and installation relationship of other components, so it will not be described in detail.
[0032] After leveling the target area at the top of the rock foundation and removing incomplete gravel and soil particles, place the precast concrete components in the target area or erect a reinforced concrete foundation in the target area to form a foundation 2. Reinforcing bars need to be installed in the foundation 2. The foundation 2 covers three anchor holes, and the top elevation of the foundation 2 should be no less than 150mm above the ground.
[0033] Anchor bolt channel holes, the same number as the number of rock anchor bolts 1, are pre-drilled on the pile cap 2. The top of each rock anchor bolt 1 extends from one anchor bolt channel hole, and a thread is pre-drilled on the top of the rock anchor bolt 1. A steel pad 6 is fitted on the top surface of the pile cap 2 and the outside of the rock anchor bolt 1 to prevent the concrete foundation in the area of the anchor bolt channel hole from being crushed under pressure. The first nut 8 is tightened onto the thread of the rock anchor bolt 1 to achieve a stable connection between the rock anchor bolt 1 and the pile cap 2, making the entire pile foundation stable.
[0034] The foundation 2 can be either an integral form covering the three anchor holes or it can include three independent small foundations, each covering one anchor hole. Preferably, the foundation 2 is an integral form covering the three anchor holes. The integral foundation 2 can connect the three rock anchor rods 1 to the foundation 2 as a whole, which enhances the overall bearing capacity and stability. At the same time, the integral foundation 2 can be directly poured as a whole, thereby speeding up the construction progress.
[0035] The lattice-type composite column includes three column segments 3, a supporting steel plate 4, and a column base plate 7. The three column segments 3 are arranged in a circular array and are inclined inwards. The tops of the three column segments 3 are close together, and the supporting steel plate 4 is fixedly welded to the top of the three column segments 3. The supporting steel plate 4 is used for fixed installation with the rotation control device of the heliostat system. Bolt holes can be pre-drilled on the supporting steel plate 4 according to the requirements of the rotation control device, and the supporting steel plate 4 is fixed to the rotation control device with bolts. (See attached figure) Figure 7 .
[0036] Although the attached drawings only show one scenario where the three column segments 3 are inclined inward, in another feasible embodiment, the three column segments 3 can also be arranged vertically. The vertical arrangement of the three column segments 3 can be inferred from the scenario shown in the attached drawings and does not require any creative effort. At the same time, it does not affect the installation position and installation relationship of other components, so it will not be described in detail.
[0037] The column base plate 7 is fixedly installed at the bottom of the column branch 3. Four fixing through holes are evenly distributed on the column base plate 7. Twelve anchor bolts 5 are pre-embedded and fixed in the foundation 2. Four anchor bolts 5 form a group, and the four groups of anchor bolts 5 are arranged in a circumferential array. The top of the anchor bolt 5 extends out of the top surface of the foundation 2, and a thread is reserved on the top of the anchor bolt 5. The top of each group of anchor bolts 5 passes through the four fixing through holes of a column base plate 7, and is screwed onto the thread of the anchor bolt 5 by the second nut 9, so as to achieve a stable connection between the column branch 3 and the foundation 2.
[0038] The anchor bolt 5 in this patent is a mechanical anchor bolt. In this embodiment, an L-shaped anchor rod is used. Naturally, the anchor bolt 5 can also be an anchor bolt with an anchor plate, an underrun anchor bolt, or an expansion bolt.
[0039] Naturally, four or more anchor bolts can be selected for the column branch 3, and the number of anchor bolts 5 should be consistent with the number and position of the column branch 3.
[0040] In this patent, the columns can also be solid-web columns, including round tube columns, etc., but it is preferred to use lattice-type composite columns. Under the premise of the same material consumption, compared with solid-web steel structures, lattice-type columns have higher load-bearing capacity and stronger stability.
[0041] To ensure a direct and efficient force transmission path, a rock anchor 1 is installed at the bottom of each column segment 3, with the column segment 3 and the rock anchor 1 having the same inclination direction. A nut receiving hole 71 with a diameter larger than the outer diameter of the first nut 8 is opened in the middle of the column base plate 7. A passage hole corresponding to the position of the fixing through hole is opened on the steel pad 6. After the steel pad 6 is fitted onto the rock anchor 1, the tops of the four anchor bolts 5 pass through the four passage holes respectively, and then the first nut 8 is tightened onto the thread of the rock anchor 1. After the four fixing through holes on the column base plate 7 are respectively passed through the four anchor bolts 5, the column base plate 7 contacts the steel pad 6. At this time, the first nut 8 is in the nut receiving hole 71, and the top of the rock anchor 1 extends into the column segment 3. The second nut 9 is tightened onto the thread of the anchor bolt 5, thus fixing the column segment 3 to the bearing platform 2.
[0042] Meanwhile, depending on the load and design requirements, two or more rock anchors 1 can be installed at the bottom of each column branch 3. The two or more rock anchors 1 can be arranged in parallel or cross, and their intersection should be above the rock foundation. Multiple rock anchors 1 can also be installed at other locations in the target area on the top surface of the rock foundation, depending on the load and design requirements. The rock anchors 1 can be installed vertically or at a certain angle. In this case, anchor channel holes for the top of the rock anchors 1 to pass through should be reserved at the corresponding positions on the bearing platform 2, and the rock anchors 1 and the bearing platform 2 can be stably connected by the first nut 8 and the steel pad 6.
[0043] One method for installing the heliostat support device in this patent includes:
[0044] The first step is to use an anchor drilling rig to drill three anchor holes at a preset angle in the target area of the rock foundation where the heliostat is to be installed. Then, insert three rock anchor rods 1 into the anchor holes respectively, with the top of the rock anchor rods 1 extending out of the anchor holes. Grout (cement mortar or fine stone concrete) is then used to fill the anchor holes to fully fix the rock anchor rods 1.
[0045] The second step is to level the target area at the top of the rock foundation, remove incomplete gravel and soil particles, place the precast concrete foundation 2 on the top of the rock foundation, or formwork and pour reinforced concrete foundation 2 on the top of the rock foundation. Reserve three anchor bolt channel holes on the foundation 2, and pre-embed four anchor bolts 5 around each anchor bolt channel hole. The top of the rock anchor 1 passes through the anchor bolt channel hole.
[0046] The third step is to install a steel pad 6 on the top surface of the foundation 2 and the outside of the rock anchor 1. The top of the rock anchor 1 passes through the central hole of the steel pad 6, and the tops of the four anchor bolts 5 pass through the passage holes of the steel pad 6. They are tightened onto the threads of the rock anchor 1 by the first nut 8 to achieve a stable connection between the rock anchor 1 and the foundation 2.
[0047] The fourth step is to fit the four fixing through holes on the bottom plate 7 of each column segment 3 onto the top of the four anchor bolts 5, and then tighten the second nut 9 onto the thread of the anchor bolt 5 to fix the three column segments 3 onto the support platform 2. The top of the three column segments 3 is then welded with a support steel plate 4.
[0048] Fifth step: Securely connect and install the support steel plate 4 to the rotation control device using bolts, as shown in the attached document. Figure 7 .
[0049] It is obvious that modifications and / or additions can be made to the above-mentioned heliostat support device for rock foundations and the corresponding method without departing from the scope and field of this utility model.
[0050] It is equally clear that, although this invention has described the heliostat support device for rock foundations in detail, those skilled in the art will certainly be able to obtain many other equivalent forms of heliostat support devices and corresponding methods for rock foundations, which have the features described in the claims and are therefore within the scope of protection defined herein.
Claims
1. A heliostat support device for rock foundations, characterized in that: Includes rock anchors (1), a base (2) and a column. Multiple rock anchors (1) are used to be inserted and fixed in multiple anchor holes opened in the target area of the rock foundation. The base (2) is set in the target area at the top of the rock foundation. The top of the rock anchor (1) extends out of the anchor hole and is fixedly connected to the pier (2); the column is fixedly installed on the top surface of the pier (2).
2. The heliostat support device according to claim 1, characterized in that: The diameter of the anchor hole is larger than the outer diameter of the rock anchor rod (1). A solidifying material is injected into the gap between the anchor hole and the rock anchor rod (1) to fix the rock anchor rod (1) to the rock foundation.
3. The heliostat support device according to claim 1, characterized in that: An anchor channel holes, the same number as the number of rock anchors (1), are reserved on the bearing platform (2). The top of the rock anchor (1) extends out of the anchor channel holes. A steel pad (6) is fitted on the top surface of the bearing platform (2) and the outside of the rock anchor (1). A thread is reserved on the top of the rock anchor (1). A first nut (8) is screwed onto the thread of the rock anchor (1) to fix the rock anchor (1) to the bearing platform (2).
4. The heliostat support device according to claim 1, characterized in that: Multiple rock anchors (1) are arranged in an array, and the rock anchors (1) are set vertically or inclined relative to the axis of the bearing platform (2).
5. The heliostat support device according to claim 1, characterized in that: The rock anchor (1) is a hot-rolled ribbed steel bar or an expanded-base anchor.
6. The heliostat support device according to claim 1, characterized in that: The columns are either solid columns or lattice-type composite columns.
7. The heliostat support device according to claim 6, characterized in that: The lattice-type composite column includes column segments (3) and supporting steel plates (4). Multiple column segments (3) are arranged in a circular array, and multiple column segments (3) are set vertically or inclined relative to the axis of the support platform (2). The supporting steel plates (4) are fixedly connected to the top of multiple column segments (3) and are used to fix and install with the rotation control device of the heliostat system. The bottom end of the column segments (3) is fixedly connected to the support platform (2) through a fixed connection structure.
8. The heliostat support device according to claim 7, characterized in that: The fixed connection structure includes a column base plate (7) and anchor bolts (5). The column base plate (7) is fixedly installed at the bottom of the column segment (3). Multiple fixing through holes are evenly distributed on the column base plate (7). The anchor bolts (5) are fixed inside the foundation (2). The top of the anchor bolts (5) extends out of the top surface of the foundation (2). Threads are reserved on the top of the anchor bolts (5). After the tops of the multiple anchor bolts (5) pass through the fixing through holes, a second nut (9) is screwed onto the thread of the anchor bolt (5) to fix the column segment (3) and the foundation (2).
9. The heliostat support device according to claim 8, characterized in that: At least one rock anchor (1) is provided at the bottom end of each column branch (3). An anchor channel hole is reserved on the bearing platform (2). The top of the rock anchor (1) extends out of the anchor channel hole. A thread is reserved at the top of the rock anchor (1). A steel pad (6) is fitted on the top surface of the bearing platform (2) and the outside of the rock anchor (1). A first nut (8) is screwed onto the thread of the rock anchor (1) to fix the rock anchor (1) to the bearing platform (2). A nut receiving hole (71) with a diameter larger than the outer diameter of the first nut (8) is provided in the middle of the column base plate (7). A passage hole corresponding to the position of the fixing through hole is provided on the steel pad plate (6). After the top ends of the multiple anchor bolts (5) pass through the passage hole and the fixing through hole respectively, a second nut (9) is screwed on the thread of the anchor bolt (5) to fix the column limb (3) and the foundation (2).