CN216999830U - Integrated cabinet steel structure modular foundation - Google Patents

Abstract

The utility model discloses an integrated cabinet steel structure modular foundation, which comprises: the I-steel structure comprises a plurality of detachably connected I-steel main bodies, wherein a first step structure is arranged on one side end face of each I-steel main body, and a second step structure is arranged on the other side end face of each I-steel main body; the first step structures are distributed below the end face of one side of the I-shaped steel main body, and the second step structures are distributed above the end face of the other side of the I-shaped steel main body; the height of the first step structure is equal to that of the second step structure, and the height of the first step structure is half of that of the I-shaped steel main body. Compared with the prior art, the construction efficiency of the cabinet foundation can be improved and economic benefits are brought by the steel structure modularized foundation, and the cabinet foundation is convenient to use and is generally applicable.

Description

Integrated cabinet steel structure modular foundation

Technical Field

The utility model relates to the technical field of mobile communication, in particular to an integrated cabinet steel structure modular foundation.

Background

At present, the integrated cabinet is in a 5G base station rapid construction period, the use amount of the integrated cabinet is huge, and the conventional construction mode of the cabinet foundation is a cast-in-place reinforced concrete foundation and a steel structure foundation.

The cast-in-place foundation of the reinforced concrete needs to convey materials such as water, cement, reinforcing steel bars, sand, a template and the like to a site, then processes such as manual batching, concrete stirring, reinforcing steel bar binding, formwork erecting, pouring and the like are carried out, the maintenance period of the cast-in-place concrete foundation is generally 28 days, the formwork is removed after the maintenance period is finished, the construction period is long, and the processes are complex.

The common steel structure foundation usually adopts two modes of on-site welding or in-plant welding, and the section steel is integrally welded into a foundation, so that the manufacturing is not standard, the construction quality can not be ensured, the rust-proof treatment is not in place, and the durability of the foundation is influenced. The cabinet quantity is different be not convenient for assemble, from safe angle consideration, antidumping and antidetonation also can not reach the requirement, and is not standard module, and is comparatively difficult when iron tower system material purchase.

SUMMERY OF THE UTILITY MODEL

The utility model provides an integrated cabinet steel structure modular foundation, which aims to solve the problem that the existing cabinet foundation cannot be generally applied due to the defects of complex construction process, long construction period, high construction cost, material waste and the like.

The utility model provides an integrated cabinet steel structure modular foundation which comprises a plurality of detachably connected I-steel main bodies, wherein a first step structure is arranged on one side end face of each I-steel main body, and a second step structure is arranged on the other side end face of each I-steel main body; the first step structures are distributed below the end face of one side of the I-shaped steel main body, and the second step structures are distributed above the end face of the other side of the I-shaped steel main body; the height of the first step structure is equal to that of the second step structure, and the height of the first step structure is half of that of the I-shaped steel main body. In the utility model, the width of the I-shaped steel main body is 200 mm.

Further, in one implementation manner, the first step structure comprises a first connecting plate fixedly connected to the middle of the end face of the i-steel main body, the plate surface of the first connecting plate is perpendicular to the end face of the i-steel main body, and the side edge of the first connecting plate is perpendicular to the web plate of the i-steel main body; the length and the width of the first connecting plate are equal and are the width of the I-shaped steel main body. According to the utility model, the I-steel main bodies can be randomly lapped in the forward direction and the vertical direction through the first connecting plate with the length and the width being the width of the I-steel main body, so that the lapping diversity of the I-steel main bodies is improved, and the supporting requirements on different cabinets are met. Specifically, the length and the width of the first connecting plate are both 200 mm.

Further, in one implementation manner, a second connecting plate and a third connecting plate are vertically fixed to the side edge of the first connecting plate, and are used for forming a plane parallel to the end face of the i-steel main body;

the second connecting plate is used for fixedly connecting the first connecting plate, the left side of the web plate of the I-shaped steel main body and the top surface of the I-shaped steel main body; the third connecting plate is used for fixing the first connecting plate, the right side of the web plate of the I-shaped steel main body and the top surface of the I-shaped steel main body. In the utility model, the second connecting plate and the third connecting plate are used for enhancing the stability of the first connecting plate.

Further, in an implementation manner, the second step structure includes a fourth connecting plate fixedly connected to the middle of the side surface of the i-steel main body, a plate surface of the fourth connecting plate is perpendicular to the end surface of the i-steel main body, and a side edge of the fourth connecting plate is perpendicular to the web plate of the i-steel main body; the length and the width of the fourth connecting plate are equal and are the width of the I-shaped steel main body. Similarly, according to the utility model, the fourth connecting plate with the length and the width equal to the width of the I-shaped steel main body enables the I-shaped steel main body to be lapped randomly in the forward direction and the vertical direction, so that the lapping diversity of the I-shaped steel main body is improved, and the supporting requirements on different cabinets are met. Specifically, the length and the width of the fourth connecting plate are both 200 mm.

Further, in one implementation manner, a fifth connecting plate and a sixth connecting plate are vertically fixed to the side edge of the fourth connecting plate, and are used for forming a plane parallel to the end face of the i-steel main body;

the fifth connecting plate is used for fixedly connecting the fourth connecting plate, the left side of the web plate of the I-shaped steel main body and the bottom surface of the I-shaped steel main body; the sixth connecting plate is used for fixing the fourth connecting plate, the right side of the web plate of the I-shaped steel main body and the bottom surface of the I-shaped steel main body. In the utility model, the fifth connecting plate and the sixth connecting plate are used for enhancing the stability of the fourth connecting plate.

Further, in one implementation mode, a plurality of bolt holes which are uniformly distributed are formed in the first connecting plate, the fourth connecting plate and flanges at two side ends of the I-shaped steel main body, and the diameter of each bolt hole is the same.

Further, in one implementation manner, the number of the first connecting plate, the number of the fourth connecting plate and the number of the bolt holes on the flanges at the two side ends of the i-steel main body are all 4; each bolt hole is arranged symmetrically. According to the utility model, through the symmetrically arranged bolt holes, the I-shaped steel main body can be lapped in both the forward direction and the vertical direction, and the detachable installation is realized.

Further, in an implementation manner, at least one square through hole is formed in a web plate of the i-steel main body and used for being connected with a grounding flat iron and a cable of the ground cabinet.

Further, in an implementation manner, each modular foundation at least comprises 4 detachably connected I-steel main bodies, and the modular foundation is at least provided with 4 square through holes. According to the utility model, after the modular foundation is lapped, the four holes on the four sides are used for cables such as communication wires and power lines to enter and exit the cabinet from any direction, and can also be used for a water outlet, so that accumulated water in the foundation is prevented from corroding foundation members. Specifically, the size of the square through hole may be set to 100mm × 100 mm.

Further, in an implementation mode, an anti-skidding device is arranged between the integrated cabinet steel structure modular foundation and the ground, and the anti-skidding device comprises a rubber pad. In the utility model, the anti-skid device is used for enhancing the friction force between the foundation and the ground and enhancing the anti-skid performance of the modularized foundation on the ground.

In the prior art, the construction process of the cabinet foundation is complex, the construction period is long, the manufacturing cost is high, the materials are wasted, the environment is not protected, the requirement of construction and development is not met, and the cabinet is difficult to be generally applied. And adopt aforementioned integration rack steel construction modularization basis, including a plurality of I-steel main parts of dismantling the connection, every I-steel main part side end face is equipped with first stair structure, and another side end face is equipped with second stair structure, has reached the effect that the concatenation constitutes the rack basis. Compared with the prior art, the integrated cabinet steel structure modular foundation provided by the utility model has the advantages that the installation period is short, the construction efficiency of the cabinet foundation is improved, in addition, the modular foundation has no maintenance period, can be repeatedly utilized, can bring economic benefits while protecting the environment, and is convenient to generally apply.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective structure diagram of an integrated cabinet steel structure modular foundation provided in part by an embodiment of the present application;

fig. 2 is a schematic front view structure diagram of an integrated cabinet steel structure modular foundation provided in part by the embodiments of the present application;

fig. 3 is a left side view structural schematic diagram of an integrated cabinet steel structural modular foundation provided in part by the embodiments of the present application;

fig. 4 is a structural schematic diagram of a right side view of an integrated cabinet steel structural modular foundation provided in the embodiment of the present application;

fig. 5 is a schematic top-view structural diagram of an integrated cabinet steel-structure modular foundation provided in part by an embodiment of the present application;

fig. 6 is a schematic bottom structure view of an integrated cabinet steel structure modular foundation provided in the embodiment of the present application;

fig. 7a is a schematic top view of a first assembly form of an integrated cabinet steel structure modular foundation provided in part by an embodiment of the present application;

fig. 7b is a perspective structural schematic view of a first assembly form of an integrated cabinet steel structural modular foundation provided in part by the embodiment of the present application;

fig. 7c is a schematic perspective structure diagram of a first assembly form of an integrated cabinet steel structure modular foundation provided in part by the embodiment of the present application;

fig. 8a is a schematic top view of a second assembly form of an integrated cabinet steel structure modular foundation provided in part by the embodiments of the present application;

fig. 8b is a schematic perspective structure diagram of a second assembly form of an integrated cabinet steel structure modular foundation provided in part by the embodiment of the present application.

Wherein: 10-an I-steel body, 101-a first step structure, 1011-a first connecting plate, 10111-bolt holes, 1012-a second connecting plate, 1013-a third connecting plate, 102-a second step structure, 1021-a fourth connecting plate, 1022-a fifth connecting plate, 1023-a sixth connecting plate, and 103-a square through hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

In the prior art, on the one hand, the disadvantages of the reinforced concrete cast-in-place foundation include: (1) the maintenance period is generally 28 days, the construction period is long, the working procedures are complex, the materials are difficult to carry, and the requirement of quickly building a station is not met; (2) when the base station is moved, the cast-in-place foundation can not be reused, so that material waste and economic loss are caused, and the construction requirement of green environmental protection is not met; (3) manual batching and stirring can not meet design requirements, basic design strength and the like are affected, and quality cannot be guaranteed; (4) affecting the efficiency of building stations and the delivery timeliness. Affecting customer perception. On the other hand, the general steel structure foundation has disadvantages including: (1) the manufacturing is not standard, and the construction quality cannot be guaranteed; (2) on-site welding, the rust prevention measures are not treated in place, the durability of basic use is influenced, and certain safety risk exists; (3) the equipment cabinets are not convenient to assemble when the number of the equipment cabinets is different, and the anti-overturning and anti-seismic requirements of the equipment cabinets are not met from the perspective of specification; (4) the system is not a standard module, and has higher difficulty in purchasing, expanding and transforming materials of the iron tower system.

To the basis among the prior art, the technical problem that this application needs to solve includes: (1) basic module size: the basic size needs to match with the size of the cabinet, and the installation requirement when the cabinet is continuously increased or reduced is met. (2) Basic module shape: the basic module can overlap joint and assembly in any direction, the shape is regular, the production and processing are convenient, the batch production can be realized, and the basic module is required to be single and is convenient to purchase and install. (3) The basic module is connected: the design of tie point should removable demountable, does not influence the installation reinforcement of rack to guarantee basic installation stability, wholeness, reliability. (4) The cabinet and the foundation are subjected to seismic reinforcement: the cabinet and the foundation are fixed by bolts through bolt holes at four corners of the cabinet, the bolts are uniformly provided by a cabinet manufacturer, and the requirement of seismic reinforcement is met. (5) Landing the floor: when reforming transform station newly-increased rack, a foundation module of newly-increased rack one side need be demolishd to original basis, makes the rack basis can the cisoid continuous connection, when requiring to demolish original foundation module, does not influence the normal use of original rack to guarantee the easy dismounting on basis, maneuverability is strong. (6) In the research process, manufacturers are required to cooperate with production trial installation to ensure the landing effectiveness of the product, and in the product research and development process, each scheme in the middle needs the cooperation production and installation of the manufacturers due to dozens of optimization and improvement, so that research and development capital, production cost and coordination of the manufacturers are all problems to be solved.

The embodiment of the application discloses integration rack steel construction modularization basis is applied to the installation of integration rack in the communication base station construction and fixes, and the rack mounting height is raised to aim at, and protection rack and equipment do not receive ponding to soak, prevent effects such as rack corrosion damage. The foundation can be used on floors and ground, and has strong applicability.

Referring to fig. 1 to 6, the integrated cabinet steel structure modular foundation provided by this embodiment includes a plurality of i-steel main bodies 10 detachably connected, a first step structure 101 is disposed on an end surface of one side of each i-steel main body 10, and a second step structure 102 is disposed on an end surface of the other side; the first step structures 101 are distributed below the end face of one side of the i-steel main body 10, and the second step structures 102 are distributed above the end face of the other side of the i-steel main body 10; the first step structure 101 and the second step structure 102 have the same height, and are both half of the height of the i-steel main body 10.

Specifically, in this embodiment, the i-steel main body 10 is made of No. 20 i-steel, and the main reason is that the flange width of the No. 20 i-steel is designed to be 200mm, which is just matched with the size of the cabinet, the two ends of the i-steel are designed to be step-shaped, and the bolt connecting plates are designed to be used as connecting members for overlapping the base members, and the design of the overlapping nodes skillfully utilizes the height and width of the i-steel to be matched with the size of the cabinet, so as to meet the requirement that the cabinet and the foundation can be continuously extended and increased at the same time.

In the integrated cabinet steel structure modular foundation described in this embodiment, the first step structure 101 includes a first connection plate 1011 fixedly connected to the middle of the end face of the i-steel main body 10, a plate surface of the first connection plate 1011 is perpendicular to the end face of the i-steel main body 10, and a side edge of the first connection plate 1011 is perpendicular to a web of the i-steel main body 10; the first connecting plate 1011 has the same length and width, and is the width of the i-steel body 10. In this embodiment, be the first connecting plate of I-steel main part width through the length and width for the I-steel main part can be in cisoid and the arbitrary overlap joint of vertical direction, has promoted the lapped variety of I-steel main part, satisfies the support requirement to different cabinets. Specifically, the length and the width of the first connecting plate are both 200 mm.

In the integrated cabinet steel structure modular foundation of the embodiment, a second connecting plate 1012 and a third connecting plate 1013 are vertically fixed to the side edge of the first connecting plate 1011, and are used for forming a plane parallel to the end face of the i-steel main body 10;

the second connecting plate 1012 is used for fixedly connecting the first connecting plate 1011, the left side of the web of the i-steel main body 10 and the top surface of the i-steel main body 10; the third connecting plate 1013 is used to fix the first connecting plate 1011, the right side of the web of the i-steel main body 10 and the top surface of the i-steel main body 10. In the present invention, the second connecting plate 1012 and the third connecting plate 1013 reinforce the stability of the first connecting plate 1011.

In the integrated cabinet steel structure modular foundation of this embodiment, the second step structure 102 includes a fourth connecting plate 1021 fixedly connected to the middle of the side surface of the i-steel main body 10, a plate surface of the fourth connecting plate 1021 is perpendicular to an end surface of the i-steel main body 10, and a side edge of the fourth connecting plate 1021 is perpendicular to a web of the i-steel main body 10; the length and the width of the fourth connecting plate 1021 are equal, and are the width of the i-steel body 10. Similarly, in the utility model, the fourth connecting plate 1021 with the length and the width equal to the width of the I-steel main body enables the I-steel main body 10 to be overlapped randomly in the forward direction and the vertical direction, so that the overlapping diversity of the I-steel main body 10 is improved, and the supporting requirements on different cabinets are met. Specifically, the length and the width of the fourth connecting plate are both 200 mm.

In the integrated cabinet steel structure modular foundation of this embodiment, a fifth connecting plate 1022 and a sixth connecting plate 1023 are vertically fixed to a side edge of the fourth connecting plate 1021, so as to form a plane parallel to an end surface of the i-steel main body 10;

the fifth connecting plate 1022 is used for fixedly connecting the fourth connecting plate 1021, the left side of the web of the i-steel main body 10 and the bottom surface of the i-steel main body 10; the sixth connecting plate 1023 is used to fix the fourth connecting plate 1021, the right side of the web of the i-steel main body 10 and the bottom of the i-steel main body 10. In the present invention, the fifth connecting plate 1022 and the sixth connecting plate 1023 are used to reinforce the stability of the fourth connecting plate 1021.

In the integrated cabinet steel structure modular foundation described in this embodiment, a plurality of bolt holes 10111 are uniformly distributed on the flanges of the first connecting plate 1011 and the fourth connecting plate 1021 and the end portions of the two sides of the i-steel main body 10, and the diameters of the bolt holes 10111 are the same.

In the integrated cabinet steel structure modular foundation of this embodiment, the number of the first connecting plate 1011, the number of the fourth connecting plate 1021 and the number of the bolt holes 10111 on the flanges at the two side ends of the i-steel main body 10 are all 4; each of the bolt holes 10111 is symmetrically arranged. In the utility model, the I-shaped steel main body 10 can be lapped in both the forward direction and the vertical direction through the symmetrically arranged bolt holes 10111, so that the detachable installation is realized.

In the integrated cabinet steel structure modular foundation described in this embodiment, the web of the i-steel main body 10 is provided with at least one square through hole 103 for connecting to the ground flat iron and the cable of the ground cabinet.

In the integrated cabinet steel structure modular foundation described in this embodiment, each modular foundation at least includes 4 i-steel main bodies 10 detachably connected, and the modular foundation at least is provided with 4 square through holes 103. According to the utility model, after the modular foundation is lapped, the four holes on the four edges are used for cables such as communication lines, power lines and the like to enter and exit the cabinet from any direction, and can also be used for a water outlet, so that accumulated water in the foundation is prevented from corroding foundation members. Specifically, the size of the square through hole 103 may be set to 100mm × 100 mm.

In the integrated cabinet steel structure modular foundation, an anti-skid device is arranged between the integrated cabinet steel structure modular foundation and the ground, and the anti-skid device comprises a rubber pad. In the utility model, the anti-skid device is used for enhancing the friction force between the foundation and the ground and enhancing the anti-skid performance of the modularized foundation on the ground.

Through integration rack steel construction modularization basis of this embodiment, I-steel main part 10 adopts 20 # I-steel as basic component main material, specifically, can be at I-steel main part both ends reverse processing become the step form, this embodiment first stair structure and second stair structure, every stair structure adopts-8 mm 200mm steel sheet and I-steel web vertical welding, designs 4 diameter 13.5 mm's bolt hole on the steel sheet, as basic module lap joint's connecting plate, this embodiment first connecting plate and fourth connecting plate. 4 bolt holes (the aperture is determined according to the size of the reinforcing bolt at the bottom of the cabinet, and the bolt is provided by a cabinet manufacturer) are designed on the flange of the end part of the I-steel main body and serve as mounting holes of the anti-seismic reinforcing bolt of the cabinet. The modular foundation provided by the embodiment can be used for installing an integrated cabinet with roof and ground length and width of 900mm, and matched basic sizes can be selected for cabinets with other sizes according to a method of scaling in equal proportion.

Referring to fig. 7a to 8b, the modular foundation provided by the utility model is formed by splicing i-steel main bodies into two splicing forms of a square or a rectangle, in this embodiment, two anti-overturning design modes of autonomous anti-overturning and anchoring reinforcement are adopted, and when the anchoring anti-overturning design is adopted, 4M 12 expansion bolts (one at each corner) are adopted to connect the foundation and a concrete ground (floor slab) in a reinforcing manner. When the autonomous anti-overturning design is adopted, according to the research of specifications and related documents, the height-width ratio and the basic characteristics of the cabinet are considered, the anti-overturning coefficient is 1.5, the anti-sliding coefficient is 1.3, and the dead weight of the equipment cabinet equipment and the steel structure foundation is mainly used as an anti-overturning means.

Based on the foregoing integrated cabinet steel structure modular foundation, the present embodiment further provides the following analysis in six aspects for the modular foundation, so as to reasoning and demonstrate the beneficial effects brought by the present invention:

(1) rollover resistance checking calculation

According to the relevant data collection of the common cabinet type, the currently common integrated cabinet is an EF cabinet, this calculation is performed by taking an F cabinet as an example, the height H of the vertical surface of the cabinet is 2.2m (including a base), the width W is 0.9m, the weight S1 of each cabinet and equipment is 350kg, the height H of the foundation is 0.2m, the weight of each foundation module is about S2 kg to 35kg, the mass S3 of the foundation filling material is 240kg, the length L1 is 1.1m, and the basic wind pressure is 0.35kN/m 2.

According to the formula G L/Mk is more than or equal to 1.5

In the formula:

g is a cabinet and a basic dead weight standard value (kN), and a load component coefficient is considered to be 1.0;

l is the distance (m) from the center of gravity of the cabinet and the foundation to the overturning edge;

mk is a bending moment representative value (kN · m) transmitted to the bottom surface of the prefabricated foundation by wind load or earthquake load, and a basic combination of load effects under a bearing capacity limit state with a load component coefficient of 1.0 is taken.

Wind pressure standard value Wk is beta z mu s mu zWo

＝1.0327×1.3×1.52×0.35

＝0.7142kN/m2

Anti-overturning moment G.L ═ (S1+ S3+ 4. S2). times.1.0X 10/1000X L1/2

＝7.3KN×0.55m

＝4.015kN.m

Overturning moment Mk ═ Wk · (H + H) · (W · (H + H) × 2/3 × 1.0

＝0.7142×2.4×0.9×1.6×1.0

＝2.468kN.m

According to the formula, the method comprises the following steps: g is more than or equal to 1.5

Namely 4.015/2.468 is equal to 1.627 which is equal to or more than 1.5, and the overturn-resisting requirement is met.

(2) Checking calculation of anti-slip stability

The basic anti-slip stability should meet the following requirements:

Gkμ/Ph≥1.3

in the formula:

gk-the dead weight standard (kN) for the foundation and its superstructure;

mu-coefficient of friction between the base bottom surface and the foundation, which is determined according to field test or is analyzed by experience;

ph-wind load or earthquake load is transmitted to the horizontal force representative value (kN) of the bottom surface of the foundation, and the basic combination of load effects under the load bearing capacity limit state with the load component coefficient of 1.0 is taken.

Wind pressure standard value Wk ═ beta z mu s mu zWo

＝1.0327×1.3×1.52×0.35

＝0.7142kN/m2

Gk＝(S1+S3+4·S2)×1.0×10/1000

＝7.3kN

Mu is 0.3, and the anti-slip coefficient is taken according to the friction coefficient of the rubber pad and the concrete.

Ph＝Wk*(H+h)·W

＝0.7142×2.4×0.9

＝1.543

According to the formula: gk mu/Ph is more than or equal to 1.3

To obtain: 7.3 multiplied by 0.3/1.543-1.419 ≥ 1.3 satisfies the anti-sliding design requirement

(3) Seismic strengthening design

When the basic module is designed, 4 corresponding bolt holes are designed on the flange of the end part of the I-shaped steel according to the bolt hole position interval and the model of the bottom of the cabinet, the cabinet and the I-shaped steel foundation are connected by 4 bolts (provided by a cabinet manufacturer, and the strength and the specification of the bolts are based on the design specification of the manufacturer), the cabinet and the foundation are ensured to be effectively connected and fixed, and the requirement of earthquake proofing is met. The cabinet foundation and the ground are provided with 6 mm-thick rubber pads, the rubber pads are fully paved and 50mm wider than the foundation, the friction force between the cabinet foundation and the ground is enhanced, and the foundation is prevented from sliding.

(4) Basic module processing production

The steel structure modularization basis is in production and processing process, and is higher to material unloading precision requirement, for reaching anticipated effect after guaranteeing the basis installation, requires that the overlap joint face laminating degree is good, and the module overlap joint does not have the dislocation. The base module should meet product standardization requirements. The following specifications should be met during the production of the basic module:

(4.1) uniformly producing and processing the basic modules in a standardized way by professional manufacturers, wherein the manufacturing process of the steel structure meets the relevant standard requirements;

(4.2) before the basic module is produced, lofting according to the size of a construction drawing, and finding key nodes and cautions in the production process by knowing the drawing requirements;

(4.3) when the base structure material is cut and blanked, the lapping height of two ends of the base is ensured to be 100mm, the lapping length is 200mm, the precision is required to be within 0.5 mm, and the phenomena of size dislocation, unevenness and the like when the base and the cabinet are installed are avoided;

(4.4) in order to ensure the close fitting of the lap joint between the module foundations, welding on the lap joint surface is not required when the foundation components are welded, the welding line is positioned on one side of the back surface of the lap joint surface, double-sided welding is adopted for the connecting plate and the I-shaped steel web plate, single-sided welding is adopted for the connecting welding line of the stiffening plate, the I-shaped steel flange and the connecting plate, the welding line is uniform and continuous, spot welding is not required, the welding quality is in accordance with the specification requirement, and the height of the welding line is not less than 6 mm;

(4.5) positioning and drilling holes of bolt holes strictly according to the size of a design drawing;

(4.6) after the component is processed, the component is tried by a manufacturer in a processing plant, products meeting requirements can be used in actual engineering, and basic modules which do not meet the requirements or are deformed cannot be used;

(4.7) all steel structural components are subjected to hot galvanizing or rust-proof treatment;

(4.8) the unused bolt holes at the bottom of the foundation are plugged and filled by adopting an antirust material, so that the phenomenon that long-term water accumulation and corrosion affect secondary utilization is prevented.

(5) Analysis of economic benefit of product

(5.1) construction period analysis

The utility model is a modular foundation, production and processing are finished by manufacturers, in the process of base station construction, the time of field processing and traditional reinforced concrete foundation maintenance is saved, the construction maintenance time can be saved by 8 days, the purpose of rapid installation and rapid delivery is achieved, the progress target of operators is met, and the construction requirement of current 5G rapid station construction is met. The project period target analysis table is as follows:

the statistics of the table shows that the construction period of the modularized steel structure foundation can be greatly shortened, the station building efficiency and the delivery timeliness rate are improved, and the method is one of effective means for current base station construction.

(5.2) analysis of investment benefit

In the construction of the integrated cabinet, the integrated cabinet can be roughly divided into four types of floor newly-built cabinets, ground newly-built cabinets, new station relocation and expansion according to the construction scene. The difference lies in that the foundation cushion layer is not required to be designed on the floor cabinet foundation, and the foundation cushion layer is required to be designed on the ground cabinet foundation. Meanwhile, when the base station is moved, the traditional foundation cannot be moved and used, the original foundation can only be used as a waste, certain material waste is caused, and the steel structure modular foundation can be recycled, so that the four latitude indexes are respectively analyzed when investment indexes are analyzed.

(5.2.1) newly-built cabinet of roofing

Number of cabinets (one)	1	2	3	4
					Concrete foundation (Yuan)	700	1330	1960	2590
Steel structure modularization baseFoundation (Yuan)	1200	1800	2400	3000
					Decrease ratio of	-71.43％	-35.34％	-22.45％	-15.83％

(5.2.2) newly-built cabinet on ground

Number of cabinets (one)	1	2	3	4
					Concrete foundation (Yuan)	1204	2212	3220	4228
Steel structure modular foundation (Yuan)	1200	1800	2400	3000
					Reduction ratio	0.33％	18.63％	25.47％	29.04％

(5.2.3) moving newly-built cabinet

Number of cabinets (one)	1	2	3	4
					Concrete foundation (Yuan)	1204	2212	3220	4228
Steel structure modular foundation (Yuan)	0	0	0	0
					Reduction ratio	100.00％	100.00％	100.00％	100.00％

(5.2.4) transforming and expanding newly-added cabinet

Number of cabinets (one)	1	2	3	4
					Concrete foundation (Yuan)	1204	2212	3220	4228
Steel structure modular foundation (Yuan)	600	1200	1800	2400
					Reduction ratio	50.17％	45.75％	44.10％	43.24％

Analyzing investment benefits according to the four dimensions:

(5.2.1.1) the investment of the modular foundation in the new roof station is higher than that of the traditional modular foundation, but the investment difference is gradually reduced along with the increase of the number of cabinets, but the modular foundation can be used for secondary use when the base station is moved, the new site infrastructure cost is saved, and the modular foundation can be used for many times by one-time investment. With this evaluation, the modular steel structure foundation is still more economically applicable than the traditional concrete foundation.

(5.2.2.1) when the ground is newly built, the cost of the modular foundation is lower than that of the traditional concrete foundation, and the investment difference is larger along with the increase of the number of the cabinets, so that the cost saving advantage is more obvious.

(5.2.3.1) when the base station is moved, because the foundation of the original station address can not be reused, the new foundation is needed to be built at the new station address, the original material is abandoned, the new material is needed to be purchased again at the new station address, the great investment and the resource waste are caused, when the steel structure modularization foundation is used, the foundation of the original station address can be disassembled and repeatedly used together with the cabinet, the original material is not wasted, the new foundation is not needed, the environment is protected, the economy, the effect of dual saving is achieved, and the economic benefit is very obvious.

(5.2.4.1) when the cabinet is newly added in the transformation and expansion process, only two newly-added basic modules are needed for each newly-added cabinet, and the traditional cast-in-place foundation of reinforced concrete needs an independent cast-in-place cabinet foundation, and the construction period is longer, and compared with the modular foundation, the advantages of saving and cost are obvious.

From the estimated investment cost analysis of the 4 construction types, the investment of the steel structure modular foundation of the new roof construction station is higher than that of the traditional concrete foundation mode, in other construction scenes, the investment of the modular steel structure foundation is lower than that of the traditional cast-in-place concrete foundation, and the cost benefit advantage is obvious. And when a plurality of cabinets are installed and newly-added cabinets are reconstructed and expanded, only 2 module foundations need to be newly added when one cabinet is added, and the manufacturing cost is far lower than that of the newly-added cast-in-place concrete foundation. The construction advantages of other aspects of the steel structure modular foundation are considered, the modular foundation meets the construction requirements of the 5G base station at the present stage, and the trend of industry development is met.

(5.3) Green environmental analysis

The steel structure modularization foundation is a novel foundation which can be disassembled and assembled and can be repeatedly used, and the analysis and the explanation can be carried out from two aspects of resource saving and environmental pollution in the green environmental protection property.

(5.3.1) according to the analysis of basic design drawing and basic installation mode, except that need purchase 4 basic modules when newly-building first rack, only need purchase 2 basic modules to increase 1 rack in the future can (contain and transform the dilatation and increase the rack newly, the prerequisite is that original site rack basis also adopts this design basic type), the basic module purchase quantity relation can refer to the following table in the system:

in the aspect of material utilization, the basic scheme is a skillful design idea, so that materials are saved, material waste is avoided, and the design idea of energy conservation and environmental protection is met.

(5.3.2) the utility model belongs to a modularized product foundation, is produced by a manufacturer in a unified way, does not need to be processed on site by constructors, does not cause resource waste and site environment pollution, can be repeatedly used for many times, avoids the condition that the original site foundation cannot be used up and abandoned, saves the construction cost, does not cause material abandonment, is a novel foundation with green, environmental protection and economic use, accords with the design concept of saving and green environmental protection advocated by the state, and has great popularization value and applicability.

(6) Achievement promotion extension

The utility model takes the common EF cabinet with the outer diameter, the length and the width of 900mm multiplied by 900mm as the design size, and also relates to different manufacturers and models of cabinets with different sizes in the practical engineering construction application. When the cabinet foundations with other sizes are designed, the size and the connection node method of the innovative design can be used as reference, and the cabinet foundations with other models can be subjected to equal-proportion size lofting design without complex changes. Such as: when the CD cabinet with the size of 850mm multiplied by 850mm is used, the length size of the basic module is 1050mm when the basic module is designed, other node designs can be universal, normal installation and use of the CD cabinet can be met, and the CD cabinet is very simple and easy to change.

In conclusion, the modular steel structure foundation provided by the utility model is strong in flexibility and good in extensibility, can be used for various rectangular or square cabinet foundations, and is a modular foundation which is novel in design, rapid to install and low in construction cost. Can be popularized and applied in the whole province and even the whole country according to the construction conditions and requirements of each region.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. The integrated cabinet steel structure modular foundation is characterized by comprising a plurality of detachably connected I-steel main bodies (10), wherein a first step structure (101) is arranged on one side end face of each I-steel main body (10), and a second step structure (102) is arranged on the other side end face of each I-steel main body; the first step structures (101) are distributed below the end face of one side of the I-shaped steel main body (10), and the second step structures (102) are distributed above the end face of the other side of the I-shaped steel main body (10); the first step structure (101) and the second step structure (102) are equal in height and are half of the height of the I-shaped steel main body (10).

2. The integrated cabinet steel structure modular foundation according to claim 1, wherein the first step structure (101) comprises a first connecting plate (1011) fixedly connected to the middle of the end face of the i-steel main body (10), the plate surface of the first connecting plate (1011) is perpendicular to the end face of the i-steel main body (10), and the side edge of the first connecting plate (1011) is perpendicular to the web of the i-steel main body (10); the length and the width of the first connecting plate (1011) are equal and are the width of the I-shaped steel main body (10).

3. The integrated cabinet steel structure modular foundation of claim 2, wherein a second connecting plate (1012) and a third connecting plate (1013) are vertically fixed on the side of the first connecting plate (1011) for forming a plane parallel to the end face of the I-steel main body (10);

the second connecting plate (1012) is used for fixedly connecting the first connecting plate (1011), the left side of the web plate of the I-shaped steel main body (10) and the top surface of the I-shaped steel main body (10); the third connecting plate (1013) is used for fixing the first connecting plate (1011), the right side of the web plate of the I-shaped steel main body (10) and the top surface of the I-shaped steel main body (10).

4. The integrated cabinet steel structure modular foundation of claim 3, wherein the second step structure (102) comprises a fourth connecting plate (1021) fixedly connected to the middle of the side surface of the I-shaped steel main body (10), the plate surface of the fourth connecting plate (1021) is perpendicular to the end surface of the I-shaped steel main body (10), and the side edge of the fourth connecting plate (1021) is perpendicular to the web of the I-shaped steel main body (10); the length and the width of the fourth connecting plate (1021) are equal and are the width of the I-shaped steel main body (10).

5. The integrated cabinet steel structure modular foundation of claim 4, wherein a fifth connecting plate (1022) and a sixth connecting plate (1023) are vertically fixed on the side of the fourth connecting plate (1021) for forming a plane parallel to the end face of the I-steel main body (10);

the fifth connecting plate (1022) is used for fixedly connecting the fourth connecting plate (1021), the left side of the web plate of the I-shaped steel main body (10) and the bottom surface of the I-shaped steel main body (10); the sixth connecting plate (1023) is used for fixing the fourth connecting plate (1021), the right side of the web plate of the I-shaped steel main body (10) and the bottom surface of the I-shaped steel main body (10).

6. The integrated cabinet steel structure modular foundation of claim 5, wherein the first connecting plate (1011) and the fourth connecting plate (1021) and flanges at two side ends of the I-steel main body (10) are provided with a plurality of bolt holes (10111) which are uniformly distributed, and the diameters of the bolt holes (10111) are the same.

7. The integrated cabinet steel structure modular foundation according to claim 6, wherein the number of the first connecting plate (1011), the fourth connecting plate (1021) and the bolt holes (10111) on flanges at two side ends of the I-shaped steel body (10) is 4; each of the bolt holes (10111) is symmetrically arranged.

8. The integrated cabinet steel structure modular foundation of claim 1, wherein the web of the I-steel body (10) is provided with at least one square through hole (103) for connecting to a grounding flat iron and a cable of a ground cabinet.

9. The integrated cabinet steel structure modular foundation of claim 8, wherein each modular foundation comprises at least 4 detachably connected I-steel main bodies (10), and the modular foundation is provided with at least 4 square through holes (103).

10. The integrated cabinet steel structure modular foundation of claim 1, wherein an anti-slip device is disposed between the integrated cabinet steel structure modular foundation and the ground, and the anti-slip device comprises a rubber pad.

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