Platform structure suitable for mechanical cold source equipment

Abstract

A cast-in-place cross beam is of a reinforced concrete structure, a cast-in-place pile is arranged on the lower portion of the cast-in-place cross beam, and a steel hoop is arranged on a pile body to fix a trash holding net. Working platforms are arranged at the two ends of the cast-in-place beam respectively, the installation requirement of the trash holding net collecting and releasing equipment is met, the working platforms are of reinforced concrete cantilever slab structures, and bracket supports are arranged on the lower portions of cantilever slabs. The two trash holding nets are arranged in the gap between the working platforms and the bridge deck slab, and the trash holding nets can be rapidly folded and unfolded through the folding and unfolding devices on the two working platforms. The bridge deck is arranged between the cast-in-place cross beams, the lower portion of the bridge deck is supported by adopting a prestressed concrete hollow prestressed simply-supported plate structure, a passage platform supporting column adopts a spherical tensile support, the design requirement that the bridge deck bears buoyancy under the working condition of the designed reference flood level can be met, a driving channel is formed, and cable grooves are formed in the two sides of the upper portion of the bridge deck. Retracting and releasing equipment is arranged on the upper portions of the retaining walls to assist in retracting and releasing of the trash holding net.

Description

TECHNICAL FIELD

[0001] The utility model relates to civil engineering, building field, especially in nuclear power plant cold source engineering has mechanized structure of taking out and putting in the trash screen function. BACKGROUND

[0002] In the current production and life, need to design a kind of can satisfy the structure of cold source mechanized taking out and putting in trash screen function, promote trash screen work efficiency, ensure the safe and stable operation of nuclear power unit.

[0003] The current trash screen generally adopts the type of conventional "one word type" high-pile pier + underwater anchor block + trash screen, which is mature in technology and widely used. The trash screen is arranged at the diameter of high-pile pier, and is fixed on the pier pile foundation on both sides,

[0004] The upper part is connected with the upper anchor ring of the pier through the main cable, and the lower part is connected with the underwater anchor block through the bottom anchor chain, forming a closed plane and realizing the trash screen function.

[0005] The above device still has some problems when in use. The trash screen is a fixed structure, and the part above the water surface of the trash is generally cleaned manually by water ship, and the underwater part needs to be operated underwater by divers, so the work efficiency is low. When marine organisms break out in a large scale in a short time, the marine organisms cannot be cleaned in time and effectively, so that the marine organisms enter the open channel and block the water intake, causing the nuclear power plant unit to be shut down, which has a significant impact on the safe and stable operation of the nuclear power plant. Therefore, the trash screen needs to have the function of mechanical taking out and putting in, so as to realize rapid taking out and putting in, without the need for diving operation, provide work efficiency, and ensure the safe operation of the nuclear power unit. UTILITY MODEL CONTENTS

[0006] According to the above technical problems, the utility model provides a platform structure suitable for mechanical cold source equipment, which is characterized by being composed of cast-in-place beams, platform structures, bridge deck structures and support structures. The cast-in-place beams are installed with platform structures on both sides, the cast-in-place beams are installed with bridge deck structures inside the middle, the cast-in-place beams are installed with support structures below, the bridge deck structure is composed of prestressed simply supported plates, bridge deck plates, passing platform supports, cable grooves A, cable grooves B, retaining walls A and retaining walls B, the cast-in-place beams are installed with a plurality of passing platform supports above the middle, the passing platform supports are installed with bridge deck plates above, the bridge deck plates are installed with cable grooves A above, the cable grooves A are installed with retaining walls A outside, the bridge deck plates are installed with cable grooves B above the other side, and the cable grooves B are installed with retaining walls B outside.

[0007] The platform structure is composed of working platforms A, working platforms B and corbel supports. The cast-in-place beams are installed with working platforms A at one end, the cast-in-place beams are installed with working platforms B at the other end, a plurality of corbel supports are poured below the working platforms A and the working platforms B, and the other end of the corbel supports is poured on the cast-in-place beams.

[0008] The supporting structure consists of filling columns, steel clamps, and supports. Steel clamps are installed on the outer side of the filling column. Several supports are installed on the top of the filling column, and cast-in-place beams are supported on the top of the supports. Several filling columns are installed below the cast-in-place beams.

[0009] The beneficial effects of this utility model are:

[0010] This utility model relates to a platform structure for mechanized cold source equipment. The cast-in-place crossbeam is a reinforced concrete structure. To meet the requirements for the deployment and retrieval of the debris-blocking net, the width of the crossbeam is the same as the diameter of the foundation piles. Cast-in-place piles are installed at the bottom of the crossbeam, driven into the bearing layer, and steel clamps are installed on the piles to secure the debris-blocking net. To meet the installation requirements of the debris-blocking net deployment and retrieval equipment, working platforms are installed at both ends of the cast-in-place crossbeam. The working platforms are reinforced concrete cantilever slab structures, with reinforced concrete brackets at the bottom of the cantilever slabs to enhance the overall performance of the platforms. The working platforms and the cast-in-place crossbeam form an "I" shape, which meets the requirements for the mechanized deployment and retrieval of the debris-blocking net. The combination of cantilever slabs and brackets in the working platforms saves concrete usage, reduces the load on the superstructure, and enhances practicality. Compared with traditional cast-in-place foundation structures, this access platform increases the span, reduces the number of piles, improves the integrity and efficiency of the debris-blocking net, and reduces project investment. Two debris-blocking nets are installed in the gaps between the two working platforms and the bridge deck. These nets can be quickly deployed and retracted using equipment on the two working platforms. The bridge deck is installed between the cast-in-place crossbeams, and is supported by a prestressed concrete hollow prestressed simply supported slab structure, forming a driving passage.

[0011] Cable troughs are installed on both sides of the upper section, with retaining walls mounted on the outer sides of the cable troughs. A retrieval and deployment device is installed on top of the retaining walls to assist in the retrieval and deployment of the trash net. The support columns connecting the cast-in-place beams and the prestressed simply supported slabs utilize spherical tensile bearings, taking into account the buoyancy force on the bridge deck under the design reference flood level and the wave buoyancy force on the bridge deck under the maximum typhoon wave condition, thus improving the design requirements for structural safety under extreme conditions. This device enables mechanized retrieval and deployment of the trash net, achieving rapid retrieval and deployment, allowing for timely cleaning of the trash net without the need for diving operations, improving work efficiency, and ensuring the safe operation of the nuclear power unit. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the overall structure of the platform structure applicable to mechanized cold source equipment of this utility model;

[0013] Figure 2 is a partial structural schematic diagram of the platform structure applicable to mechanized cold source equipment of this utility model;

[0014] Figure 3 is a partial structural schematic diagram of the platform structure applicable to mechanized cold source equipment of this utility model;

[0015] As shown in the figure: 1. Cast-in-place beam, 2. Working platform A, 3. Working platform B, 4. Bracket support, 5. Filling column, 6. Steel hoop, 7. Support, 8. Prestressed simply supported plate, 9. Bridge deck slab, 10. Passage platform support column, 11. Cable trough A, 12. Cable trough B, 13. Retaining wall A, 14. Retaining wall B. DETAILED DESCRIPTION

[0016] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0018] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. Example 1

[0020] As shown in Figure 1, several passing platform pillars 10 are installed above the middle of the cast-in-place cross beam 1, the bridge deck 9 is installed above the passing platform pillars 10, the cable trough A11 is installed on the bridge deck 9, the retaining wall A13 is installed outside the cable trough A11, the cable trough B12 is installed on the other side of the bridge deck 9, the retaining wall B14 is installed outside the cable trough B12, the working platform A2 is installed at one end of the cast-in-place cross beam 1, the working platform B3 is installed at the other end of the cast-in-place cross beam 1, several corbel supports 4 are poured below the working platform A2 and the working platform B3, the corbel supports 4 are poured on the cast-in-place cross beam 1, the steel hoop 6 is arranged outside the column body of the pouring column 5, several supports 7 are installed above the pouring column 5, the cast-in-place cross beam 1 is supported above the supports 7, and several pouring columns 5 are arranged below the cast-in-place cross beam 1. Embodiment 2

[0021] In use of the utility model, the cast-in-place cross beam 1 is a cast-in-place reinforced concrete structure, the width of the cross beam is the same as the diameter of the foundation pile to meet the requirement of the trash screen retraction and extension. The pouring column 5 is arranged at the lower part of the cross beam, the pile foundation is punched into the bearing layer, and the steel hoop 6 is arranged on the column body to fix the trash screen. To meet the installation requirement of the trash screen retraction and extension equipment, the working platform A2 is arranged at one end of the cast-in-place platform, the working platform B3 is arranged at the other end of the cast-in-place platform, the cast-in-place platform A and the cast-in-place platform B are the reinforced concrete cantilever plate structures, the corbel supports 4 made of reinforced concrete are arranged at the lower part of the cantilever plate to enhance the overall performance of the platform. Two trash screens are arranged in the gap between the working platform A2 and the working platform B3 and the bridge deck 9, and the trash screens can be quickly retracted and extended through the retraction and extension equipment on the working platform A2 and the working platform B3. The bridge deck 9 is arranged between the cast-in-place cross beams, the prestressed concrete hollow prestressed simple support plate 8 structure is adopted below the bridge deck 9 to form a driving passage, the cable trough A11 is arranged on one side of the upper part of the bridge deck 9, the cable trough B12 is arranged on the other side of the upper part of the bridge deck 9, the retaining wall A13 and the retaining wall B14 are arranged outside the cable trough A11 and the cable trough B12, the retraction and extension equipment is arranged on the upper part of the retaining wall A13 and the retaining wall B14 to assist the trash screen retraction and extension. The passing platform pillars 10 connected between the cast-in-place cross beam 1 and the prestressed simple support plate 8 adopt the spherical tensile support to meet the design requirement of the bridge deck under the design standard flood level working condition. Embodiment 3

[0022] The bottom elevation of the water intake open channel is -7.0 m, the high water level of a once-in-a-century flood is 2.98 m, the low water level of a once-in-a-century flood is -0.82 m, and the water level of the design reference flood is 6.97 m. A platform structure is arranged in the middle of the open channel, a cast-in-place cross beam 1 has a span of 16 m, the upper structure adopts prestressed concrete hollow simply-supported slabs, the lower structure adopts pile-integrated piers, the prestressed hollow slabs are arranged on the upper part of the cast-in-place cross beam 1 to form a passing platform, the platform has a width of 7.5 m (1.45 (cable groove A11) + 4.6 (bridge deck slab 9) + 1.45 (cable groove B12)), the top elevation of the platform axis is 7.0 m, and the one-way transverse slope is 2%. The upper part of the outer side retaining wall A13 of the cable groove A11 and the outer side retaining wall B14 of the cable groove B12 are provided with auxiliary devices for assisting the retraction and release of the trash screen, the cast-in-place cross beam 1 is provided with wing plate structures at both ends to widen the passing platform and form a working platform A2 and a working platform B3, the top elevation of the operation platform is 6.75 m, the width is 7.66 m, and the upper part is provided with retraction and release equipment. A space with a width of 2.0 m is formed between the working platform and the bridge deck to facilitate the arrangement of the trash screen. The foundation piles of the cast-in-place cross beam 1 adopt Φ1.8 m cast-in-place piles 5, and the pile shafts are provided with steel hoops 6 for fixing the trash screen. The trash screen forms a closed structure through the upper equipment of the working platform, the auxiliary equipment on the upper part of the cable groove retaining wall, the steel hoops 6 of the pile shafts 5, and underwater anchor beams, and the mechanical retraction and release of the trash screen is realized through the upper equipment. Through local overall wave model test verification, under the design reference flood level and the maximum typhoon wave working condition, the vertical maximum wave floatation force of the platform is 1480 kN, so the bridge support 7 adopts a spherical tensile support. The vertical bearing capacity of a single support 7 is 1500 kN, the tensile force of the support 7 is 400 kN, there are 14 supports 7 per span, and the structural design requirements can be met.

[0023] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The various components mentioned in the utility model are common technologies in the prior art, which should be understood by those skilled in the art. The utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. Platform structure suitable for mechanized cold source equipment, characterized in that Cast-in-situ crossbeam, platform structure, bridge deck structure, support structure, the cast-in-situ crossbeam both sides install platform structure, the cast-in-situ crossbeam middle inside install bridge deck structure, the cast-in-situ crossbeam below install support structure.

2. The platform structure for mechanical refrigeration plant as claimed in claim 1, wherein The bridge deck structure is composed of prestressed simply supported plate, bridge deck plate, passing platform support, cable trough A, cable trough B, retaining wall A and retaining wall B, a plurality of passing platform supports are installed above the middle part of the cast-in-situ crossbeam, the bridge deck plate is installed above the passing platform supports, the cable trough A is installed above the bridge deck plate, the retaining wall A is installed outside the cable trough A, the cable trough B is installed above the other side of the bridge deck plate, and the retaining wall B is installed outside the cable trough B.

3. The platform structure for mechanical refrigeration plant as claimed in claim 1, wherein The platform structure is composed of working platform A, working platform B and corbel bracket, the working platform A is installed at one end of the cast-in-situ crossbeam, the working platform B is installed at the other end of the cast-in-situ crossbeam, a plurality of corbel brackets are poured below the working platform A and the working platform B, and the other end of the corbel bracket is poured on the cast-in-situ crossbeam.

4. The platform structure for mechanical refrigeration plant as claimed in claim 1, wherein The support structure is composed of filling column, steel hoop and support, the steel hoop is arranged outside the column body of the filling column, a plurality of supports are installed above the filling column, the cast-in-situ crossbeam is supported above the supports, and a plurality of filling columns are arranged below the cast-in-situ crossbeam.

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