CN114622592B - Power grid civil engineering modular foundation and construction method - Google Patents

Abstract

The invention discloses a power grid civil engineering modular foundation and a construction method, wherein the power grid civil engineering modular foundation comprises a prefabricated bottom plate, a prefabricated top plate and a plurality of prefabricated side plates, the prefabricated side plates are arranged above the prefabricated bottom plate and are connected end to end, the prefabricated top plate is arranged above the prefabricated side plates, the adjacent prefabricated side plates are fixed through bolts, vertical sealing grooves are formed in the joints of the adjacent prefabricated side plates, lower sealing grooves are formed in the joints of the prefabricated bottom plate and the prefabricated side plates and are communicated with the vertical sealing grooves, sealing fillers are arranged in the vertical sealing grooves, and sealing fillers are arranged in the lower sealing grooves. The invention provides a civil construction modular foundation of a power grid and a construction method, and has the advantages of short construction period, convenience in installation, high structural strength and the like.

Description

Power grid civil engineering modular foundation and construction method

Technical Field

The invention relates to the technical field of power equipment construction, in particular to a power grid civil engineering modular foundation and a construction method.

Background

Along with the continuous development of economy in China, the electricity required by social economy is larger and larger, so that related distribution network engineering and business expansion engineering matched with the electricity are also more and more, and the higher and higher requirements, the high-standard construction period, the construction safety, the construction process, the civilized construction and the like are followed. Civil engineering in distribution network engineering and business expansion engineering mostly adopts traditional civil engineering mode, has shortcomings such as low efficiency, large occupied area, long construction period, and is difficult to satisfy the power grid development and construction requirements and the user power consumption requirements at the present stage. The application people vigorously promote the distribution network construction and optimize the operator environment, and creatively uses a civil engineering modular construction mode, so that the method is a brand-new civil engineering facility construction mode, has the outstanding advantages of high construction speed, high construction efficiency, standard construction process and the like, and is a good method for solving the civil engineering construction difficulty in distribution network engineering and business expansion engineering.

Chinese patent application publication No. CN108343082A, published as 2018, 27.02, 2018, entitled "foundation construction method for high voltage tower", discloses a foundation construction method for high voltage tower, relating to the field of foundation construction for transmission line tower, wherein the foundation of high voltage tower adopts a rectangular iron tower foundation, the foundation adopts a foundation bolt foundation, and the main steps of excavation of foundation pit include: dividing the rectangular foundation into pits, wherein the positions of four foundation pits are determined by dividing the pits; digging out a sample hole according to the excavation size of the foundation pit; after the sample hole is dug, the size of the complex quantity is matched with the design requirement, and then the sample hole is dug continuously; controlling the size of the pit wall in the excavation process of the foundation pit, and ensuring the pit wall to be vertical; building a chassis; building upright columns on the chassis; aligning the rectangular foundation anchor bolts; checking the size of each part; self-compacting concrete is adopted in the concrete pouring process. The foundation construction method adopts the self-compacting concrete, can balance the mutual relation among all characteristics of the self-compacting concrete, improve the compactness, effectively prevent cracks from generating, improve the structural durability and avoid the damage to the soil quality caused by repeated construction. However, the construction method still adopts on-site pouring, and the problems still exist.

Disclosure of Invention

In order to overcome the defects of low efficiency, large occupied area, long construction period and the like of the civil construction of the power grid foundation in the prior art, the invention provides the modular foundation for the civil construction of the power grid, which has the advantages of short construction period, convenience in installation, high structural strength and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a power grid civil engineering modularization basis, includes prefabricated bottom plate, prefabricated roof and the prefabricated curb plate of a plurality of, the prefabricated curb plate setting is in prefabricated bottom plate top, and the prefabricated curb plate end to end of a plurality of, the prefabricated roof setting is in prefabricated curb plate top, adjacent prefabricated curb plate passes through the bolt fastening, the seam crossing of adjacent prefabricated curb plate is equipped with perpendicular seal groove, the seam crossing of prefabricated bottom plate and prefabricated curb plate is equipped with down the seal groove, lower seal groove and perpendicular seal groove intercommunication are equipped with sealing filler in the perpendicular seal groove, be equipped with sealing filler in the lower seal groove.

Among the above-mentioned technical scheme, the sealing filler can be waterproof sealed glue, also can be the mortar that has waterproof effect after solidifying, and prefabricated bottom plate, prefabricated roof and the inside all pre-buried reinforcing bar of prefabricated curb plate, and all pre-buried the steel sheet that supplies the bolt fastening on the three, pass through the bolt fastening each other. The sealing filler can enter the lower sealing groove through the vertical sealing groove, so that the vertical sealing groove and the lower sealing groove are filled with the sealing filler. The technical scheme has the advantages that: (1) The foundation component member is light in weight, high in strength and enough in rigidity, and meets the requirements of transportation and construction. (2) The traditional wet construction of a civil construction site is abandoned, and after the site pouring and building are changed into factory standardization, the construction period is shortened by quickly assembling according to the standard process on site. The construction site is purified, and dust, noise, sewage pollution and water resource consumption in the construction period are reduced. (3) The processing is convenient, the installation workload and the installation error are reduced, the appearance of the component is strived to be simple, and the construction measure is simple. (4) The cable can meet the requirements of safety, stability and bearing, and the normal use requirements of various devices and cables. (4) The lower sealing groove and the vertical sealing groove can ensure the sealing property of each prefabricated plate after being spliced.

Preferably, the prefabricated side plates are of a convex structure, the joints of the adjacent prefabricated side plates are in a Z shape, and the vertical sealing grooves are arranged in the middle of the Z-shaped joints. The structure can make two adjacent prefabricated curb plates fix a position each other, guarantees the accuracy of mounted position, and the seam of "Z" font can increase sealed effect, avoids the seepage.

Preferably, the prefabricated bottom plate is provided with a positioning groove, and the lower end of the prefabricated side plate is matched with the positioning groove and is arranged in the positioning groove. The locating slot can be used for locating the prefabricated side plate.

Preferably, the lower end surface of each prefabricated side plate is V-shaped, the surface of each prefabricated bottom plate, which is in contact with the corresponding prefabricated side plate, is V-shaped, the lower end surface of each prefabricated side plate is tightly attached to the corresponding prefabricated bottom plate, and the lower sealing groove in the same prefabricated side plate is V-shaped. The surface of the prefabricated bottom plate, which is in contact with the prefabricated side plate, is in a V shape, so that the prefabricated side plate can be positioned during installation, the position of the prefabricated side plate is more accurate, the subsequent fixation is facilitated, and gaps can be reduced. Meanwhile, the lower sealing groove is V-shaped, so that the sealing filler poured into the vertical sealing groove can flow into the lower sealing groove to fill the lower sealing groove, and the filling effect is better.

Preferably, an exhaust port is arranged at the middle corner of the V-shaped lower sealing groove. The exhaust port is arranged at the highest position of the inflection point. The exhaust port can exhaust, and the filling effect of the sealing filler is improved.

Preferably, the lower end face of each prefabricated side plate is in an inverted V shape, the surface of each prefabricated bottom plate, which is in contact with the corresponding prefabricated side plate, is in an inverted V shape, the lower end face of each prefabricated side plate is tightly attached to the corresponding prefabricated bottom plate, the lower sealing groove in the same prefabricated side plate is in an inverted V shape, and an exhaust port is formed in the middle turning point of the inverted V-shaped lower sealing groove.

The surface of the prefabricated bottom plate, which is in contact with the prefabricated side plate, is inverted V-shaped, so that the prefabricated side plate can be positioned during installation, the position of the prefabricated side plate is more accurate, the prefabricated side plate is convenient to fix at the back, and gaps can be reduced. Simultaneously, lower seal groove is "V" font down, can make the sealing filler of pouring into in the vertical seal groove fill with down the seal groove from lower supreme, makes the gas in the whole lower seal groove get rid of completely through the gas vent, guarantees down that the seal groove is all full of by sealing filler, guarantees to fill the effect.

Preferably, the exhaust port is disposed at the highest position at the inflection point. The lower sealing groove is fully filled with the sealing filler, and when the exhaust port is filled with the sealing filler towards the outer cap, the lower sealing groove is fully filled with the sealing filler.

Preferably, a sealing plug is arranged on the exhaust port. When the air vent is filled with the sealing filler towards the outer cap, the lower sealing groove is completely filled with the sealing filler, and the air vent is plugged by the sealing plug.

A construction method of a power grid civil engineering modular foundation adopts the power grid civil engineering modular foundation, and comprises the following steps:

a. prefabrication in a factory: prefabricating the prefabricated bottom plate, the prefabricated top plate and the prefabricated side plates in a factory;

b. excavating a foundation pit: excavating the foundation pit according to the actual required size, and tamping and leveling the bottom of the foundation pit;

c. and (3) module installation: hoisting the prefabricated bottom plate into the foundation pit, hoisting the prefabricated side plates onto the prefabricated bottom plate after the prefabricated bottom plate is adjusted, fixing the adjacent prefabricated side plates through bolts, and fixing the prefabricated bottom plate and the prefabricated side plates through bolts;

d. grouting and sealing: filling sealing filler into the vertical sealing groove, filling the vertical sealing groove and the lower sealing groove with the sealing filler, and then backfilling the periphery of the prefabricated side plate;

e. top plate installation: and hoisting the prefabricated top plate to the prefabricated side plate and fixing.

In the technical scheme, the specific flow of factory prefabrication is as follows: 1. and cleaning the mold. And (3) shoveling the inside and the outside of the mould, wiping off residual dust and the like by using gauze, keeping the mould clean, and uniformly brushing a thin layer of demolding agent on the inner wall and the bottom surface of the mould. 2. And binding and placing a reinforcement cage. Finishing binding operation in a special reinforcement cage binding area according to the specification and the model required by the drawing; and placing the bound reinforcement cage in a cleaned mould. 3. And (6) pouring concrete. When the prefabricated part is poured, the concrete test block under the same condition is adopted for standard maintenance, and whether the detected concrete meets the requirement of a drawing design label or not is detected. And after the monitoring is qualified, the concrete flows into the mold from the feed opening, the vibration equipment is started, the layered vibration is dense, each layer vibrates until no bubble appears, and the surface is screeded after the last layer vibrates. 4. And (6) demolding. The cured prefabricated member can be demoulded and then lifted to a designated area. 5. And (5) maintaining. In order to ensure the sufficient strength of the prefabricated member during transportation and on-site construction, the prefabricated member needs to be maintained for a sufficient time. 6. And (6) inspecting and warehousing. Before warehousing, at least the following inspection is carried out on the product: whether size, colour, surface smoothness, edges and corners are lost or not, etc., and the stacking place is tidy, thereby avoiding pollution. 7. And (5) leaving the factory. Before each prefabricated part leaves the factory, a concrete resiliometer is adopted to carry out strength detection, and the prefabricated part can leave the factory after being qualified. In the technical scheme, before the prefabricated bottom plate is placed, a layer of fine sand is paved at the bottom of the foundation pit to serve as a cushion layer. Before the prefabricated bottom plate is hoisted, the flatness of the bottom plate foundation is required to be checked to meet the design standard. And the installation positioning line is marked on the installation position of the prefabricated bottom plate, so that the accuracy of the installation position is ensured. After the bottom plate is installed, the bottom plate needs to be installed smoothly, and subsequent prefabricated side wall installation can be carried out. The technical scheme has the advantages that: (1) The foundation component member is light in weight, high in strength and enough in rigidity, and meets the requirements of transportation and construction. (2) The traditional wet construction of civil construction site is abandoned, and after the site pouring and building are changed into factory standard production, the construction period is shortened by quickly assembling the components according to the standard process on site. The construction site is purified, and the dust, noise, sewage pollution and water resource consumption in the construction period are reduced. (3) The processing is convenient, the installation workload and the installation error are reduced, the appearance of the component is strived to be simple, and the construction measure is simple. (4) Can meet the requirements of safety, stability and bearing, and meet the requirements of normal use of various devices and cables. (4) The lower sealing groove and the vertical sealing groove can ensure the sealing property of each prefabricated plate after being spliced.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a top view of a prefabricated side panel;

FIG. 3 is a schematic view of the structure of embodiment 3.

In the figure: the prefabricated bottom plate comprises a prefabricated bottom plate 1, a prefabricated top plate 2, a prefabricated side plate 3, a vertical sealing groove 4, a lower sealing groove 5, an exhaust port 6 and sealing filler 8.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in figures 1 and 2, a power grid civil engineering modularization foundation, including prefabricated bottom plate 1, prefabricated roof 2 and a plurality of prefabricated curb plate 3, prefabricated curb plate 3 sets up in prefabricated bottom plate 1 top, and 3 end to end of a plurality of prefabricated curb plate, prefabricated roof 2 sets up in prefabricated curb plate 3 top, adjacent prefabricated curb plate 3 passes through the bolt fastening, the seam crossing of adjacent prefabricated curb plate 3 is equipped with perpendicular seal groove 4, the seam crossing of prefabricated bottom plate 1 and prefabricated curb plate 3 is equipped with down seal groove 5, down seal groove 5 and perpendicular seal groove 4 intercommunication, be equipped with sealing filler 8 in the perpendicular seal groove 4, be equipped with sealing filler 8 in the down seal groove 5. Prefabricated curb plate 3 is "protruding" font structure, and the seam of adjacent prefabricated curb plate 3 is "Z" font, and vertical seal groove 4 sets up the intermediate position at "Z" font seam. Be equipped with the constant head tank on the prefabricated bottom plate 1, the lower extreme and the constant head tank adaptation of prefabricated curb plate 3 just set up in the constant head tank.

Among the above-mentioned technical scheme, sealing filler 8 can be waterproof sealed glue, also can be the mortar that has waterproof effect after solidifying, and prefabricated bottom plate 1, prefabricated roof 2 and 3 inside all pre-buried reinforcing bars that have of prefabricated curb plate, and all pre-buried the steel sheet that supplies the bolt fastening on the three, and the three is fixed through the bolt fastening each other. The sealing filler 8 can enter the lower sealing groove 5 through the vertical sealing groove 4, so that the vertical sealing groove 4 and the lower sealing groove 5 are filled with the sealing filler 8. The technical scheme has the advantages that: (1) The foundation component member is light in weight, high in strength and enough in rigidity, and meets the requirements of transportation and construction. (2) The traditional wet construction of civil construction site is abandoned, and after the site pouring and building are changed into factory standard production, the construction period is shortened by quickly assembling the components according to the standard process on site. The construction site is purified, and the dust, noise, sewage pollution and water resource consumption in the construction period are reduced. (3) The processing is convenient, the installation workload and the installation error are reduced, the appearance of the component is strived to be simple, and the construction measure is simple. (4) Can meet the requirements of safety, stability and bearing, and meet the requirements of normal use of various devices and cables. (4) The lower sealing groove 5 and the vertical sealing groove 4 can ensure the sealing performance of the prefabricated plates after being spliced.

Example 2:

as shown in fig. 1, on the basis of embodiment 1, the lower end surface of the prefabricated side plate 3 is in a V shape, the surface of the prefabricated bottom plate 1 contacting with the prefabricated side plate 3 is in a V shape, the lower end surface of the prefabricated side plate 3 is tightly attached to the prefabricated bottom plate 1, and the lower sealing groove 5 on the same prefabricated side plate 3 is in a V shape. The surface of prefabricated bottom plate 1 and prefabricated curb plate 3 contact is "V" font, can play the positioning action to 3 installations at prefabricated curb plate, makes 3 positions at prefabricated curb plate more accurate, the fixed of the back of being convenient for, also can reduce the gap. Meanwhile, the lower sealing groove 5 is V-shaped, so that the sealing filler 8 poured into the vertical sealing groove 4 can flow into the lower sealing groove 5, and the lower sealing groove 5 is filled, so that the filling effect is better. An air outlet 6 is arranged at the middle inflection point of the V-shaped lower sealing groove 5. The exhaust port 6 is provided at the highest position of the inflection point. And a rubber sealing plug is arranged on the exhaust port 6.

Example 3:

as shown in fig. 3, on the basis of embodiment 1, the lower end surface of the prefabricated side plate 3 is in an inverted "V" shape, the surface of the prefabricated bottom plate 1 contacting the prefabricated side plate 3 is in an inverted "V" shape, the lower end surface of the prefabricated side plate 3 is tightly attached to the prefabricated bottom plate 1, the lower sealing groove 5 on the same prefabricated side plate 3 is in an inverted "V" shape, and an exhaust port 6 is arranged at the middle inflection point of the lower sealing groove 5 in the inverted "V" shape. The exhaust port 6 is provided at the highest position of the inflection point. And a rubber sealing plug is arranged on the exhaust port 6.

The surface of prefabricated bottom plate 1 and prefabricated curb plate 3 contact is "V" font, can play the positioning action to 3 installations at prefabricated curb plate, makes 3 positions at prefabricated curb plate more accurate, the fixed of the back of being convenient for, also can reduce the gap. Meanwhile, the lower sealing groove 5 is inverted V-shaped, so that the sealing filler 8 filled into the vertical sealing groove 4 is filled into the lower sealing groove 5 from bottom to top, gas in the whole lower sealing groove 5 is completely discharged through the gas outlet 6, the lower sealing groove 5 is guaranteed to be filled with the sealing filler 8, and the filling effect is guaranteed.

Example 4:

a construction method of a power grid civil engineering modular foundation adopts the power grid civil engineering modular foundation, and comprises the following steps:

a. prefabrication in a factory: prefabricating the prefabricated bottom plate 1, the prefabricated top plate 2 and the prefabricated side plate 3 in a factory;

b. excavating a foundation pit: excavating the foundation pit according to the actual required size, and tamping and leveling the bottom of the foundation pit;

c. and (3) module installation: hoisting the prefabricated bottom plate 1 into a foundation pit, hoisting the prefabricated side plates 3 onto the prefabricated bottom plate 1 after the adjustment is finished, fixing the adjacent prefabricated side plates 3 through bolts, and fixing the prefabricated bottom plate 1 and the prefabricated side plates 3 through bolts;

d. grouting and sealing: filling the sealing filler 8 into the vertical sealing groove 4 to ensure that the vertical sealing groove 4 and the lower sealing groove 5 are filled with the sealing filler 8, and then backfilling the periphery of the prefabricated side plate 3;

e. top plate installation: and hoisting the prefabricated top plate 2 to the prefabricated side plate 3 and fixing.

In the technical scheme, the specific flow of factory prefabrication is as follows: 1. and cleaning the mold. The inside and outside of the mould are shoveled, the residual dust and the like are wiped off by gauze, the mould is kept clean, and the inner wall and the bottom surface of the mould are uniformly brushed with a thin layer of demoulding agent. 2. And binding and placing a reinforcement cage. Finishing binding operation in a special reinforcement cage binding area according to the specification and the model required by the drawing; and placing the bound reinforcement cage in a cleaned mould. 3. And (6) pouring concrete. When the prefabricated part is poured, the concrete test block under the same condition is adopted for standard maintenance, and whether the detected concrete meets the requirement of a drawing design label or not is detected. And after the monitoring is qualified, the concrete flows into the mold from the feed opening, the vibration equipment is started, the layered vibration is dense, each layer vibrates until no bubble appears, and the surface is screeded after the last layer vibrates. 4. And (6) demolding. The cured prefabricated member can be demoulded and then lifted to a designated area. 5. And (5) maintaining. In order to ensure the sufficient strength of the prefabricated member during transportation and site construction, the prefabricated member needs to be maintained for a sufficient time. 6. And (6) inspecting and warehousing. Before warehousing, at least the following tests are carried out: whether size, colour, surface smoothness, edges and corners are lost or not, etc., and the stacking place is tidy, thereby avoiding pollution. 7. And (5) leaving the factory. Before each prefabricated part leaves the factory, a concrete resiliometer is adopted for strength detection, and the prefabricated part can leave the factory after being qualified. In the above technical scheme, before the prefabricated bottom plate 1 is placed, a layer of fine sand should be laid at the bottom of the foundation pit as a cushion layer. Before the prefabricated base plate 1 is hoisted, the flatness of the base plate foundation is checked to meet the design standard. And marking installation positioning lines at the installation positions of the prefabricated bottom plate 1 to ensure the accuracy of the installation positions. After the bottom plate is installed, the bottom plate needs to be installed smoothly, and subsequent prefabricated side wall installation can be carried out. The technical scheme has the advantages that: (1) The foundation component member has light weight, high strength and enough rigidity, and meets the requirements of transportation and construction. (2) The traditional wet construction of a civil construction site is abandoned, and after the site pouring and building are changed into factory standardization, the construction period is shortened by quickly assembling according to the standard process on site. The construction site is purified, and the dust, noise, sewage pollution and water resource consumption in the construction period are reduced. (3) The processing is convenient, the installation workload and the installation error are reduced, the appearance of the component is strived to be simple, and the construction measure is simple. (4) Can meet the requirements of safety, stability and bearing, and meet the requirements of normal use of various devices and cables. (4) The lower sealing groove 5 and the vertical sealing groove 4 can ensure the sealing performance of the prefabricated plates after being spliced.

Claims (4)

1. A civil construction modular foundation for a power grid is characterized by comprising a prefabricated bottom plate, a prefabricated top plate and a plurality of prefabricated side plates, wherein the prefabricated side plates are arranged above the prefabricated bottom plate and are connected end to end; the prefabricated side plates are of a convex structure, the joints of the adjacent prefabricated side plates are Z-shaped, and the vertical sealing grooves are arranged in the middle of the Z-shaped joints; the lower end surface of the prefabricated side plate is in an inverted V shape, the surface of the prefabricated bottom plate, which is in contact with the prefabricated side plate, is in an inverted V shape, the lower end surface of the prefabricated side plate is tightly attached to the prefabricated bottom plate, a lower sealing groove on the same prefabricated side plate is in an inverted V shape, and an exhaust port is formed in the middle turning point of the inverted V-shaped lower sealing groove; the exhaust port is arranged at the highest position of the inflection point.

2. A power grid civil engineering modular foundation as claimed in claim 1 wherein the prefabricated base plate is provided with locating slots and the lower ends of the prefabricated side plates are adapted to and located within the locating slots.

3. A power grid civil construction modular foundation as claimed in claim 1 wherein the air outlet is provided with a sealing plug.

4. A construction method of a power grid civil engineering modular foundation, which adopts the power grid civil engineering modular foundation as claimed in any one of claims 1 to 3, and is characterized by comprising the following steps:

the method comprises the following steps:

a. prefabrication in a factory: prefabricating the prefabricated bottom plate, the prefabricated top plate and the prefabricated side plates in a factory;

b. excavating a foundation pit: excavating the foundation pit according to the actual required size, and tamping and leveling the bottom of the foundation pit;

c. and (3) module installation: hoisting the prefabricated bottom plate into the foundation pit, hoisting the prefabricated side plates onto the prefabricated bottom plate after the prefabricated bottom plate is adjusted, fixing the adjacent prefabricated side plates through bolts, and fixing the prefabricated bottom plate and the prefabricated side plates through bolts;

d. grouting and sealing: filling sealing filler into the vertical sealing groove, filling the vertical sealing groove and the lower sealing groove with the sealing filler, and then backfilling the periphery of the prefabricated side plate;

e. and (3) installing a top plate: and hoisting the prefabricated top plate to the prefabricated side plate and fixing.

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