A modular assembled concrete trough foundation for GIS equipment and its installation method

Abstract

The present invention discloses a modular assembled concrete trough foundation for GIS equipment and an installation method thereof, which is characterized by comprising concrete trough prefabricated parts, concrete prefabricated cover plates and connecting bolts, wherein the concrete trough prefabricated parts include concrete corner square trough prefabricated parts and concrete straight U-shaped trough prefabricated parts; the concrete prefabricated cover plates include four types: straight cover plates, cross cover plates, T-shaped cover plates and L-shaped cover plates, the square trough prefabricated parts are used for the connection center position at each corner of the foundation, and the trough foundation is obtained by combining several modular prefabricated parts in different ways according to the requirements of different GIS equipment for the foundation. The foundation of the present invention has the advantages of high standardization, on-site dry operation, simple installation, material saving, short construction period and good comprehensive benefits, and has a good prospect for promotion and application.

Description

Technical Field

[0001] The present invention belongs to the field of GIS equipment foundation, and specifically relates to a modular assembled concrete trough foundation for GIS equipment and its installation method. Background Technology

[0002] GIS equipment has extremely stringent requirements on the settlement value and settlement difference of the foundation, so its equipment foundation is often designed as a raft foundation cast on site. Although this foundation can meet the process requirements required for the normal operation of power equipment, it has the disadvantages of large amount of concrete, long construction period, complex construction process, difficult to ensure the quality of the foundation and high cost. In order to overcome the above shortcomings, the present invention intends to design a modular assembled concrete trough foundation for GIS equipment, which is formed by bolting modular square trough prefabricated parts, U-shaped trough prefabricated parts and cover plates on site. It has the advantages of high degree of standardization, on-site dry operation, simple installation, material saving, short construction period and good comprehensive benefits. It complies with relevant national industrial policies and has good promotion and application prospects. SUMMARY OF THE INVENTION

[0003] Aiming at the problems existing in the prior art, the technical solutions adopted by the present invention to solve the problems existing in the prior art are as follows:

[0004] A modular assembled concrete trough foundation for GIS equipment, characterized in that it includes concrete trough prefabricated parts, concrete prefabricated cover plates and connecting bolts, wherein the concrete trough prefabricated parts include concrete corner square trough prefabricated parts and concrete straight U-shaped trough prefabricated parts; the concrete prefabricated cover plates include four types: straight cover plates, cross cover plates, T-shaped cover plates and L-shaped cover plates. The square trough prefabricated parts are used for the connection center position at each corner of the foundation. The square trough prefabricated parts are pre-embedded with inner tapping sleeves along the edges and top of the square trough walls on all sides, and the tops of the two side walls of the U-shaped trough prefabricated parts are pre-embedded with inner tapping sleeves. The U-shaped trough prefabricated parts are pre-embedded with inner tapping sleeves. Bolt holes are reserved on both longitudinal end faces. Several rectangular holes flush with the center lines of the bolt holes reserved on both longitudinal end faces are opened on the three side walls of the U-shaped groove prefabricated part. The rectangular holes penetrate the plate thickness as the U-shaped groove prefabricated part connection grooves, reserving operating space for subsequent bolt connection. Several embedded bolt holes are opened on the concrete prefabricated cover plate. The inner tapping sleeves on the top of the square groove prefabricated part and the U-shaped groove prefabricated part are connected to the reserved bolt holes on the concrete prefabricated cover plate by bolts. The groove foundation can meet the design of most projects by combining several modular prefabricated parts in different ways according to the foundation requirements of different GIS equipment.

[0005] The straight cover plate is mainly used for the straight section of the trough foundation, and the other three types of cover plates are arranged at the corner joints of the foundation, that is, installed at the intersection of the square trough precast and the U-shaped trough precast; among them, the L-shaped cover plate is used for the position where two U-shaped trough precasts are connected to the adjacent sides of the square trough precast; the T-shaped cover plate and the cross-shaped cover plate are used in the middle of the foundation. The T-shaped cover plate is used for the case where three U-shaped trough precasts are connected to the side of the square trough precast, and the cross-shaped cover plate is used for the case where four U-shaped trough precasts are connected to the four sides of the square trough precast.

[0006] When the precast concrete cover plate is arranged above the trough precast, the joints of the cover plates are staggered from the joints between the trough precasts.

[0007] Steel plates are embedded under all the reserved bolt holes to prevent local crushing of the concrete components.

[0008] The installation method of a modular assembled concrete trough foundation for a GIS device includes the following steps:

[0009] Step 1: After the foundation is excavated and processed, first pour a concrete cushion.

[0010] Step 2: Place four height-adjustable pads at the bottom of the precast position.

[0011] Step 3: Lift and place the precast on the pads.

[0012] Step 4: Connect the square trough precast and the U-shaped trough precast: Place the bolts in the connection grooves of the U-shaped trough precast in advance. After positioning, leveling and centering the square trough precast and the U-shaped trough precast, screw the bolts into the internal thread sleeves of the square trough from the connection grooves to complete the installation.

[0013] Step 5: Connect the U-shaped trough precast and the U-shaped trough precast: First place the required screw rods in one side of the U-shaped trough precast. After positioning, leveling and centering the two U-shaped trough precasts, use the connection bolts for installation.

[0014] Step 6: Connect the trough precast and the cover plate: Although there are four types of cover plates, their connection methods are the same, that is, use bolts to pass through the bolt holes on the cover plate and directly tighten them with the internal thread sleeves at the top of the trough precast to complete the connection.

[0015] Step 7: Fill the voids formed by the bottom pads with concrete.

[0016] Step 8: Backfill the soil and tamp it.

[0017] The present invention has the following advantages:

[0018] A modular prefabricated concrete trough foundation for GIS equipment provided by the present invention is formed by bolt - connecting modular concrete corner square trough prefabricated parts, straight U - shaped trough prefabricated parts and prefabricated covers on - site. The connection between the cover plate and the trough - shaped prefabricated part in the trough foundation is designed as a staggered - joint connection, that is, the joints of the prefabricated cover plates are all located in the middle of the U - shaped trough prefabricated parts, effectively increasing the overall stiffness of the foundation, making the integrity of the trough foundation stronger, and the stress distribution of the whole foundation more uniform, which is very beneficial to GIS equipment with strict requirements for foundation settlement.

[0019] At the same time, this prefabricated foundation has the advantages of high standardization, dry operation on - site, simple installation, material saving, short construction period and good comprehensive benefits, conforms to relevant national industrial policies, and has good popularization and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the modular prefabricated concrete trough foundation for GIS equipment;

[0021] Figure 2 Concrete square trough prefabricated part;

[0022] Figure 3 Concrete U - shaped trough prefabricated part;

[0023] Figure 4 Concrete T - shaped cover plate;

[0024] Figure 5 Concrete L - shaped cover plate;

[0025] Figure 6 Concrete cross - shaped cover plate;

[0026] Figure 7 Concrete straight - line cover plate;

[0027] Figure 8 Schematic diagram of the connection between the square trough prefabricated part and the U - shaped trough prefabricated part;

[0028] Figure 9 Schematic diagram of the connection between the U - shaped trough prefabricated part and the U - shaped trough prefabricated part;

[0029] Figure 10 Schematic diagram of the connection between the prefabricated part and the prefabricated cover plate;

[0030] Wherein: 1 - internal thread tapping sleeve, 2 - connection groove, 3 - reserved bolt hole. DETAILED DESCRIPTION OF THE INVENTION

[0031] The following is a further specific description of the technical solution of the present invention through embodiments and in combination with the drawings, as Figure 1-10As shown in the figure, a modular prefabricated concrete trough foundation for GIS equipment includes concrete trough-shaped prefabricated parts, concrete prefabricated covers, and connecting bolts. The concrete trough-shaped prefabricated parts include concrete corner square trough prefabricated parts and concrete straight U-shaped trough prefabricated parts. The concrete prefabricated covers include four types: straight covers, cross-shaped covers, T-shaped covers, and L-shaped covers. The square trough prefabricated parts are used at the connection center positions at the corners of the foundation. Inner tapped sleeves 1 are embedded along the edges and the top of the square trough wall around the square trough prefabricated parts. Inner tapped sleeves are embedded at the top of both side walls of the U-shaped trough prefabricated parts. Reserved bolt holes 3 are provided on the longitudinal end faces of the U-shaped trough prefabricated parts. A number of rectangular holes flush with the midline of the reserved bolt holes on the longitudinal end faces are provided on the three side walls inside the U-shaped trough prefabricated parts. The rectangular holes penetrate the plate thickness to serve as the connection trough 2 of the U-shaped trough prefabricated parts, reserving operation space for subsequent bolt connection. A number of embedded bolt holes 3 are provided on the concrete prefabricated covers. The inner tapped sleeves 1 on the top of the square trough prefabricated parts and the U-shaped trough prefabricated parts are bolted to the reserved bolt holes 3 on the concrete prefabricated covers. According to the requirements of different GIS equipment for the foundation, by making different combinations of a number of modular prefabricated parts, the design requirements of most projects can be met.

[0032] The straight cover is mainly used for the straight section of the trough foundation, and the other three types of covers are all arranged at the corner joints of the foundation, that is, installed at the intersection of the square trough prefabricated parts and the U-shaped trough prefabricated parts. Among them, the L-shaped cover is used at the position where two U-shaped trough prefabricated parts are connected to the adjacent sides of the square trough prefabricated parts. The T-shaped cover and the cross-shaped cover are used in the middle of the foundation. The T-shaped cover is used in the case where three U-shaped trough prefabricated parts are connected to the side of the square trough prefabricated part, and the cross-shaped cover is used in the case where four U-shaped trough prefabricated parts are connected to the four sides of the square trough prefabricated part.

[0033] When the concrete prefabricated cover is arranged above the trough-shaped prefabricated part, the joint seams of the covers are staggered from the joint seams between the trough-shaped prefabricated parts.

[0034] Steel plates are embedded under all the reserved bolt holes to prevent local crushing of the concrete components.

[0035] An installation method for a modular prefabricated concrete trough foundation for GIS equipment includes the following steps:

[0036] Step 1: After the foundation is excavated and processed, first pour a concrete cushion.

[0037] Step 2: Place four height-adjustable pads at the bottom of the prefabricated part position.

[0038] Step 3: Hoist and place the prefabricated part onto the pads.

[0039] Step 4. Connect the square groove precast with the U-shaped groove precast: Place the bolts in the connection grooves of the U-shaped groove precast in advance. After positioning, leveling, and centering the square groove precast and the U-shaped groove precast, screw the bolts into the internal tapping sleeves in the square groove from the connection grooves to complete the installation.

[0040] Step 5. Connect the U-shaped groove precast with the U-shaped groove precast: First, place the required screw rods for connection in one of the U-shaped groove precasts. After positioning, leveling, and centering the two U-shaped groove precasts, use connection bolts for installation.

[0041] Step 6. Connect the grooved precast with the cover plate: Although there are four types of cover plates, their connection methods are the same, that is, use bolts to pass through the bolt holes on the cover plate and directly tighten them with the internal tapping sleeves at the top of the grooved precast to complete the connection.

[0042] Step 7. Fill the voids formed by the bottom pads with concrete.

[0043] Step 8. For convenient concrete pouring, holes can be opened at appropriate positions at the bottom of the precast.

[0044] Step 9. Backfill the soil and tamp it.

[0045] The protection scope of the present invention is not limited to the above embodiments. Obviously, those skilled in the art can make various changes and deformations to the present invention without departing from the scope and spirit of the present invention. If these changes and deformations fall within the scope of the claims of the present invention and their equivalent technologies, the intention of the present invention also includes these changes and deformations.

Claims

1. A modular assembled concrete trough foundation for GIS equipment, characterized by: It includes concrete trough-shaped prefabricated parts, concrete prefabricated cover plates and connecting bolts, wherein the concrete trough-shaped prefabricated parts include concrete corner square trough prefabricated parts and concrete straight U-shaped trough prefabricated parts; the concrete prefabricated cover plates include four types: straight cover plates, cross cover plates, T-shaped cover plates and L-shaped cover plates. The square trough prefabricated parts are used for the connection center position at each corner of the foundation. The square trough prefabricated parts are pre-embedded with internal tapping sleeves along the edges and tops of the square trough walls. The tops of the two side walls of the U-shaped trough prefabricated parts are pre-embedded with internal tapping sleeves. The longitudinal end surfaces of the U-shaped trough prefabricated parts are provided with reserved Bolt holes: A plurality of rectangular holes flush with the center lines of the bolt holes reserved on the longitudinal end faces are provided on the three side walls of the U-shaped groove prefabricated part. The rectangular holes penetrate the plate thickness as the U-shaped groove prefabricated part connection grooves, and reserve operation space for subsequent bolt connection. A plurality of embedded bolt holes are provided on the concrete prefabricated cover plate. The inner tapping sleeves on the tops of the square groove prefabricated part and the U-shaped groove prefabricated part are connected to the reserved bolt holes on the concrete prefabricated cover plate by bolts. The groove foundation is obtained by combining a plurality of modular prefabricated parts in different ways according to the requirements of different GIS equipment for the foundation. The straight cover plate is mainly used for the straight section of the trough foundation, and the other three types of cover plates are arranged at the corner connection of the foundation, that is, installed at the intersection of the square trough prefabricated parts and the U-shaped trough prefabricated parts; When the concrete precast cover plate is arranged above the groove-shaped precast parts, the intersection joints of the cover plate are staggered with the intersection joints between the groove-shaped precast parts; Steel plates are embedded under the reserved bolt holes.

2. A modular assembled concrete trough foundation for GIS equipment as claimed in claim 1, characterized in that: The L-shaped cover plate is used for connecting the adjacent sides of the square groove prefabricated member to the position of two U-shaped groove prefabricated members.

3. A modular assembled concrete trough foundation for GIS equipment as claimed in claim 1, characterized in that: The T-shaped cover plate and the cross-shaped cover plate are used in the middle part of the foundation. The T-shaped cover plate is used when three U-shaped groove prefabricated parts are connected to the side of the square groove prefabricated part, and the cross-shaped cover plate is used when all four sides of the square groove prefabricated part are connected to U-shaped groove prefabricated parts.

4. The method for installing a modular assembled concrete trough foundation for GIS equipment according to claim 1, characterized in that: The steps include: Step 1: After the foundation is excavated and treated, concrete cushion is first laid; Step 2: Place four height-adjustable pads at the bottom of the prefabricated part. Step 3: hoist the prefabricated parts onto the pads; Step 4, connect the square groove prefabricated part with the U-shaped groove prefabricated part: place the bolt in the connection groove of the U-shaped groove prefabricated part in advance, and then position, level and center the square groove prefabricated part and the U-shaped groove prefabricated part, and then screw the bolt from the connection groove into the inner tapping sleeve of the square groove to complete the connection; Step 5, connect the U-shaped groove prefabricated parts with the U-shaped groove prefabricated parts: first place the screws required for connection in the U-shaped groove prefabricated parts on one side, then position, level and center the two U-shaped groove prefabricated parts, and then install them using connecting bolts; Step 6, connection between the slot-shaped prefabricated part and the cover plate: Although there are four types of cover plates, their connection methods are the same, that is, bolts are passed through the bolt holes on the cover plate and directly tightened with the internal tapping sleeve on the top of the slot-shaped prefabricated part to complete the connection; Step 7: Fill the space formed by the bottom pad with concrete; Step 8: Backfill the soil and compact it.

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