Anti-overturning spherical tank foundation

Abstract

The present application relates to a kind of anti-overturning spherical tank foundation, several pile foundations, several support foundations, several strip beam foundations, annular foundation and transition foundation.Several pile foundations are arranged in a ring, and the bottom of each pile foundation extends into rock layer.The annular foundation is laid around the top of several ring-arranged pile foundations.Several support foundations correspond to several pile foundations one by one, and several support foundations are respectively fixedly arranged in the upper part of the annular foundation.The transition foundation is fixedly arranged at the center of the annular foundation.Several strip beam foundations are fixedly connected between the transition foundation and the support foundation.The present application simplifies subsequent spherical tank assembly welding installation process, saves the process and measures of center column installation, saves construction cost.When hoisting spherical shell plate, no cable wind rope measures are needed, has strong anti-overturning ability, saves a lot of measure cost, and shortens construction period.

Description

Technical Field

[0001] This invention relates to the field of spherical storage tank installation technology, and in particular to an anti-tipping spherical storage tank foundation. Background Technology

[0002] Spherical storage tanks are widely used in chemical, petroleum, fertilizer, pharmaceutical, and gas production plants. These tanks are installed on foundations. Traditional spherical tank foundations only consider the overall stress on the tank. For example, in independent foundations or pileless foundations, the central column installation method is required. This method necessitates the pre-fabrication of the central column, which is costly. The piece-by-piece welding method, for single-piece installations, has poor anti-overturning performance and requires a large number of wire ropes, manual hoists, and anchor points, resulting in a complex process, low efficiency, and high risk. Summary of the Invention

[0003] In view of the technical problems mentioned in the background art, the present invention provides an anti-overturning spherical storage tank foundation that can improve the efficiency of the hoisting process of spherical storage tanks and has strong anti-overturning performance.

[0004] To achieve the above objectives, the present invention provides an anti-tipping spherical storage tank foundation, comprising:

[0005] Several pile foundations, several column foundations, several strip beam foundations, ring foundations, and transition foundations;

[0006] The pile foundations are arranged in a ring, and the bottom of each pile foundation extends into the rock strata.

[0007] The annular foundation is laid around the top of the plurality of annularly arranged pile foundations;

[0008] The plurality of column foundations correspond one-to-one with the plurality of pile foundations, and the plurality of column foundations are respectively fixedly installed on the upper part of the ring foundation.

[0009] The transition foundation is fixedly installed at the center of the annular foundation;

[0010] The several strip beam foundations are fixedly connected between the transition foundation and the support foundation.

[0011] Furthermore, the pile foundation includes several first main reinforcement bars, and concrete is poured between the several first main reinforcement bars to form a column; several first stirrups and stiffening hoops are tied to the outer surface of the several first main reinforcement bars; and an enlarged head is provided at the bottom of the column.

[0012] Furthermore, the annular foundation includes a first concrete pad layer disposed at the top of the column, on which a reinforcing bar is installed; several second main bars and waist bars are provided around the perimeter of the reinforcing bar; and two rows of hook bars are provided in the middle part of the reinforcing bar.

[0013] Furthermore, the foundation of the several support columns includes upper and lower anchor plates; several third main reinforcement bars are spaced apart along the edges between the upper and lower anchor plates; the third main reinforcement bars are located within the annular foundation and are welded to the second main reinforcement bars and stirrup bars of the annular foundation; the several third main reinforcement bars are tied together by the second stirrup bars of the annular foundation; several second stirrup bars are intersecting on the outer side of the third main reinforcement bars; several anchor bar holes are correspondingly opened on the upper and lower anchor plates for through-hole plug welding of anchor bars; several anchor bolt holes are symmetrically opened on the center line of the upper and lower anchor plates for installing anchor bolts; grouting holes are opened at the center of the upper and lower anchor plates for secondary grouting of the anchor plates; a column base plate is installed on the upper anchor plate by anchor bolts for welding to the column legs of the spherical storage tank; a pressure plate is installed on the column base plate by anchor bolts.

[0014] Furthermore, the transition foundation includes a second concrete pad at the bottom; the second concrete pad is circular; a plurality of third main reinforcement bars are distributed in a circular pattern on the second concrete pad; and a plurality of stirrups are arranged around the plurality of third main reinforcement bars.

[0015] Furthermore, the beam foundation includes a third concrete pad; a plurality of fourth main reinforcement bars are provided on the third concrete pad; the two ends of the plurality of fourth main reinforcement bars are bent, and the bent ends are inserted into the reinforcement cage of the annular foundation and the transition foundation; a plurality of stirrups are distributed intersectingly around the plurality of fourth main reinforcement bars; a plurality of web reinforcement bars are provided between the plurality of fourth main reinforcement bars; the two ends of the plurality of web reinforcement bars are bent, and the bent ends are respectively inserted into the reinforcement cage of the annular foundation and the transition foundation; a plurality of hook hoops are provided between the plurality of fourth main reinforcement bars.

[0016] Compared with existing technologies, the advantages of this invention are as follows: The anti-overturning spherical tank foundation designed in this invention simplifies the subsequent welding and installation process of the spherical tank, eliminates the need for the installation of the central column, and saves construction costs. Using the spherical tank foundation of this invention, no guy ropes are required when hoisting the spherical shell plate, providing strong anti-overturning capability, saving significant costs and shortening the construction period. This invention eliminates the need for cumbersome preparations required by traditional installation methods; it only requires step-by-step hoisting and assembly, resulting in higher efficiency. Attached Figure Description

[0017] Figure 1 This is a plan view of an embodiment of the anti-tipping spherical storage tank foundation of the present invention.

[0018] Figure 2 This is a longitudinal sectional view of an embodiment of the anti-tipping spherical storage tank foundation of the present invention.

[0019] Figure 3 This is a cross-sectional view of the annular foundation DD surface of the present invention.

[0020] Figure 4 This is a cross-sectional view of the EE plane of the beam foundation of the present invention.

[0021] Figure 5 This is a cross-sectional view of the support foundation of the present invention along plane AA.

[0022] Figure 6 This is a cross-sectional view of the pile foundation BB section of the present invention.

[0023] Figure 7 This is a cross-sectional view of the transitional basis of the present invention.

[0024] Figure 8 This is a top view of the support base of the present invention.

[0025] Among them, 1-pile foundation, 2-column foundation, 3-beam foundation, 4-ring foundation, 5-transition foundation,

[0026] 101-First stirrup, 102-First main reinforcement, 103-Stretching stirrup, 104-Enlarged head,

[0027] 201-Anchor plate, 202-Anchor bolt, 203-Pressure plate, 204-Column base plate, 205-Anchor bar, 206-Third main reinforcement, 207-Second stirrup,

[0028] 301 - Fourth main reinforcement bar, 302 - Fourth stirrup, 303 - Second hook stirrup, 304 - Second web reinforcement bar, 305 - Third concrete cushion layer.

[0029] 401 - Second main reinforcement bar, 402 - Stirrup bar, 403 - First web reinforcement bar, 404 - Second stirrup bar, 405 - First concrete cushion layer, 406 - First hook reinforcement bar

[0030] 501 - Third main reinforcement bar, 502 - Third stirrup bar. Detailed Implementation

[0031] The following description, with reference to the accompanying drawings, is provided to facilitate understanding of the technical solutions of the present invention by those skilled in the art. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention.

[0032] In the following detailed description, numerous specific details are set forth for ease of explanation to provide a full understanding of embodiments of the invention. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the invention.

[0033] like Figure 1-2 As shown in the figure, the anti-overturning spherical storage tank foundation shown in this embodiment includes several pile foundations 1, several column foundations 2, several strip beam foundations 3, ring foundations 4, and transition foundations 5;

[0034] The pile foundations 1 are arranged in a ring, and the bottom of each pile foundation 1 extends into the rock stratum;

[0035] The annular foundation 4 is laid around the top of the plurality of annularly arranged pile foundations 1;

[0036] The plurality of column foundations 2 correspond one-to-one with the plurality of pile foundations 1, and the plurality of column foundations 2 are respectively fixedly installed on the upper part of the ring foundation 4.

[0037] The transition base 5 is fixedly installed at the center of the annular base 4;

[0038] The plurality of strip beam foundations 3 are fixedly connected between the transition foundation 5 and the support foundation 2.

[0039] like Figure 6 The figure shown is a sectional view of the pile foundation BB section of the present invention. The construction process of the pile foundation 1 is as follows:

[0040] (1) The bottom of the pile foundation 1 is 800mm into the rock. Eight rotary drilling holes with a diameter of 800mm are used. The bottom is enlarged to form an enlarged head 104 to increase its pull-out resistance and increase the bearing area. On the same foundation, the bearing layer increases the bearing capacity.

[0041] (2) The first main bar 102 and the stiffening hoop 103 in the steel cage are made of threaded steel bars with a diameter of 16mm and a spacing of 150mm and 200mm respectively. The stiffening hoop 103 is a ring located inside the main bar 102. The first hoop 101 is made of round steel bars with a diameter of 8mm and a spacing of 250mm. It is wrapped around the outside of the first main bar 102 and then tied firmly with tie wire.

[0042] (3) Place the tied steel cage into the rotary-dug pile hole and pour it with C30 concrete.

[0043] (4) Seven days after pouring, the pile head is broken, and the main reinforcement bar that is broken off from the top is inserted into the ring foundation 4 by 600mm and welded to the second main reinforcement bar 401 of the ring foundation 4.

[0044] like Figure 3 As shown, the construction process of the ring foundation 4 is as follows:

[0045] (1) A cushion layer is laid around the 8 pile foundations 1. The cushion layer is made of C15 concrete and has a thickness of 50mm to form a circular cushion layer.

[0046] (2) Install the reinforcing bars 402 on the foundation. The reinforcing bars 402 are made of threaded steel bars with a diameter of 20mm and a spacing of 150mm.

[0047] (3) The second main reinforcement 402 is made of threaded steel bar with a diameter of 20mm and a spacing of 150mm. The first web reinforcement 403 is made of threaded steel bar with a diameter of 16mm and a spacing of 200mm. The second main reinforcement 401 and the first web reinforcement 403 are tied around the support reinforcement 402 with tie wire.

[0048] (4) The first hook bar 406 is made of round steel bar with a diameter of 10mm and a spacing of 150mm. It is installed in two rows in the middle of the support bar 402.

[0049] (5) The second stirrup 404 is made of round steel bar with a diameter of 8mm, which serves to fix the lower part of the third main reinforcement 206 of the support foundation 2.

[0050] like Figure 5 , 8 As shown, the construction process of pillar foundation 2 is as follows:

[0051] (1) Anchor plate 201 is divided into upper and lower parts, with 16 anchor bar 205 holes evenly opened, with a hole diameter of 18mm, for through-hole plug welding of anchor bars 205. Four anchor bolt 202 holes with a hole diameter of 32mm are symmetrically opened on the center line for installing anchor bolts 202. A hole with a diameter of 60mm is opened in the middle for secondary grouting of anchor plate 201.

[0052] (2) Four anchor bolts 202 are installed on each support foundation 2, and the anchor bolts 202 pass through the upper and lower anchor plates 201.

[0053] (3) The anchor bar 205 is made of threaded steel bar with a diameter of 16mm. 16 bars are arranged on each support foundation 2, and they pass through the upper and lower anchor plates 201 and are perforated and plugged.

[0054] (4) The third main reinforcement 206 is made of threaded steel bar with a diameter of 20mm and a spacing of 150mm. It is installed in the ring foundation 4 on the pile foundation 1 and welded to the second main reinforcement 401 and the support reinforcement 402 of the ring foundation 4.

[0055] (5) The second stirrup 207 is made of round steel bar with a diameter of 10mm and a spacing of 150mm. It is installed crosswise on the outside of the third main bar 206 and tied with tie wire.

[0056] (6) The column base plate 204 is made of a 50-mm thick steel plate, with four anchor bolt 202 holes drilled on it. The column base plate 204 is installed on top of the upper anchor plate 201 and is used for welding with the column leg of the spherical storage tank.

[0057] (7) The pressure plate 203 is made of a 20-mm thick steel plate, with an anchor bolt 202 drilled in the middle. It passes through the upper part of the anchor bolt, is placed on top of the column base plate 204, and is tightened with double nuts of the anchor bolt 202.

[0058] As Figure 7 shown, the construction process of the transition foundation 5 is as follows:

[0059] (1) Lay the cushion layer of the transition foundation 5 in the middle of the annular foundation 4. The cushion layer is made of C15 concrete with a laying thickness of 50 mm, and this cushion layer is circular.

[0060] (2) The third main reinforcement bars 501 are made of deformed bars with a diameter of 16 mm and a spacing of 150 mm. The third stirrups 502 are made of round bars with a diameter of 8 mm and a spacing of 250 mm. The third main reinforcement bars 501 are circularly distributed on the cushion layer, and then the second stirrups 502 are arranged around the main reinforcement bars 501, and the two are tied with binding wire.

[0061] As Figure 4 shown, the construction process of the strip beam foundation 3 is as follows:

[0062] (1) Lay the cushion layer from the transition foundation 5 towards the 8 pile foundation bases 1. The cushion layer is made of C15 concrete with a laying thickness of 50 mm, forming an equilateral "cross" shape.

[0063] (2) The fourth main reinforcement bars 301 are made of deformed bars with a diameter of 20 mm and a spacing of 150 mm. The two ends are bent, and the hooks are respectively inserted into the steel reinforcement cages of the annular foundation 4 and the transition foundation 5.

[0064] (3) The second waist reinforcement bars 304 are made of deformed bars with a diameter of 16 mm and a spacing of 150 mm. They are distributed between the fourth main reinforcement bars 301. The two ends are bent, and the hooks are respectively inserted into the steel reinforcement cages of the annular foundation 4 and the transition foundation 5.

[0065] (4) The second hooked stirrups 303 are made of round bars with a diameter of 8 mm and a spacing of 500 mm. The two ends are provided with hooks and are respectively arranged in the middle of the steel reinforcement cage.

[0066] (5) The fourth stirrups 302 are made of round bars with a diameter of 8 mm and a spacing of 150 mm. They are cross-distributed outside the fourth main reinforcement bars 301 and are tied with binding wire.

[0067] As shown above, the overall structural foundation of this embodiment is built, and then the templates are installed according to the external structure of the column foundation 2, strip beam foundation 3, ring foundation 4, and transition foundation 5 for concrete pouring.

[0068] After the formwork is installed, concrete is poured using C30 concrete. After the concrete is poured, it is covered with a film to prevent the moisture inside the concrete from evaporating too quickly, and then it is watered regularly for curing.

[0069] Once the concrete strength reaches 75%, the spherical shell plate of the spherical storage tank can be installed. First, install the spherical shell plate with the support legs, hoist the spherical shell plate with the support legs onto the column base plate 204 on the column foundation 2, and then weld the column legs to the column base plate.

[0070] The second spherical shell plate with column legs is hoisted sequentially until the eighth spherical shell plate with column legs is hoisted. During the hoisting process, the tie rod between the first and second spherical shell plates with column legs is installed, and the tie rod between the second and second spherical shell plates with column legs is installed sequentially until the tie rod between the seventh and eighth spherical shell plates with column legs is installed.

[0071] Then, the spherical shell plate without columns between the two spherical shell plates with column legs is hoisted and assembled. Finally, the lower pole plate, upper pole plate, lower cover plate, and upper cover plate are hoisted and assembled. During the above hoisting and assembly process, there is no need to install a central column, guy ropes, or other measures. The spherical tank foundation of the present invention can meet the anti-overturning capability.

[0072] In summary, the anti-overturning spherical tank foundation designed in this invention simplifies the subsequent welding and installation process of the spherical tank, eliminates the need for the installation of the central column, and saves construction costs. Using the spherical tank foundation of this invention, no guy ropes are required when hoisting the spherical shell plate, providing strong anti-overturning capability, saving significant costs, and shortening the construction period.

[0073] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A tilt-resistant spherical storage tank foundation, characterized in that, include: Several pile foundations (1), several column foundations (2), several strip beam foundations (3), ring foundations (4), and transition foundations (5); The pile foundations (1) are arranged in a ring, and the bottom of each pile foundation (1) extends into the rock stratum; The ring foundation (4) is laid around the top of the pile foundations (1) arranged in a ring; The plurality of column foundations (2) correspond one-to-one with the plurality of pile foundations (1), and the plurality of column foundations (2) are respectively fixedly installed on the upper part of the ring foundation (4); The transition base (5) is fixedly installed at the center of the annular base (4); The plurality of strip beam foundations (3) are fixedly connected between the transition foundation (5) and the column foundation (2); The pile foundation (1) includes several first main reinforcement bars (102), and concrete is poured between the several first main reinforcement bars (102) to form a column; several first stirrups (101) and stiffening stirrups (103) are tied to the outer surface of the several first main reinforcement bars (102); the bottom of the column is provided with an enlarged head (104). The annular foundation (4) includes a first concrete pad (405) set at the top of the column, on which a reinforcing bar (402) is installed; several second main bars (401) and first waist bars (403) are provided around the reinforcing bar (402); and two rows of first hook bars (406) are provided in the middle part of the reinforcing bar (402). The plurality of support foundations (2) include upper and lower anchor plates (201); a plurality of third main reinforcement bars (206) are arranged at intervals along the edges between the upper and lower anchor plates (201); the third main reinforcement bars (206) are located inside the annular foundation (4) and are welded to the second main reinforcement bars (401) and the stirrup bars (402) of the annular foundation (4); the plurality of third main reinforcement bars (206) are tied together by the second stirrup bars (404) of the annular foundation (4); a plurality of second stirrup bars (207) are arranged crosswise on the outside of the third main reinforcement bars (206); the upper and lower anchor plates (201) Several anchor bar (205) holes are opened on the upper part for through-hole plug welding of anchor bars (205); several anchor bolt (202) holes are symmetrically opened on the center line of the upper and lower anchor plates (201) for installing anchor bolts (202); grouting holes are opened in the center of the upper and lower anchor plates (201) for secondary grouting of anchor plates (201); a column base plate (204) is installed on the upper anchor plate (201) by anchor bolts (202) for welding with the column leg of the spherical storage tank; a pressure plate (203) is installed on the column base plate (204) by anchor bolts (202).

2. The anti-overturning spherical storage tank foundation according to claim 1, characterized in that, The transition foundation (5) includes a second concrete pad at the bottom; the second concrete pad is circular; a number of third main reinforcement bars (501) are distributed in a circular pattern on the second concrete pad; a number of third stirrups (502) are arranged around the number of third main reinforcement bars (501).

3. The anti-overturning spherical storage tank foundation according to claim 2, characterized in that, The beam foundation (3) includes a third concrete cushion layer (305); the third concrete cushion layer (305) is provided with a plurality of fourth main reinforcement bars (301); the plurality of fourth main reinforcement bars (301) are bent at both ends, and the bent ends are inserted into the reinforcement cage of the annular foundation (4) and the transition foundation (5); a plurality of fourth stirrups (302) are distributed crisscrossingly around the plurality of fourth main reinforcement bars (301); a plurality of second waist reinforcement bars (304) are provided between the plurality of fourth main reinforcement bars (301); the plurality of second waist reinforcement bars (304) are bent at both ends, and the bent ends are respectively inserted into the reinforcement cage of the annular foundation (4) and the transition foundation (5); a plurality of second hook hoops (303) are provided between the plurality of fourth main reinforcement bars (301).

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