Disclosure of Invention
The invention aims to provide a ring beam structure, which can realize quick splicing and effectively shorten the construction period while ensuring the integrity and stability through reasonable structural design.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to one aspect of the invention, the invention provides a ring beam structure for supporting a cryogenic storage tank, the ring beam structure comprising a plurality of prefabricated ring beam sections spliced end to end in sequence; a projection part is convexly arranged on one splicing end face of the prefabricated ring beam section, and a groove part matched with the projection part is concavely arranged on the other splicing end face of the prefabricated ring beam section; and the adjacent two prefabricated ring beam sections are in alignment clamping connection with the groove parts through the protruding parts so that the prefabricated ring beam sections are spliced to form an annular structure.
In some embodiments of the present application, the precast ring beam segment has an inner side and an outer side; inner side surfaces of the prefabricated ring beam sections are spliced into an inner peripheral surface of the annular structure; the outer side surfaces of the prefabricated ring beam sections are spliced to form the outer peripheral surface of the annular structure; the length of the inner side surface is smaller than that of the outer side surface in the circumferential direction of the annular structure.
In some embodiments of the present application, the inner side and the outer side of the precast ring beam segment are both planar.
In some embodiments of the present application, a plurality of the precast ring beam segments are identical in structure and size.
According to some embodiments of the present application, a steel reinforcement framework is disposed in the prefabricated ring beam section; the prefabricated ring beam section is made of the steel reinforcement framework poured concrete.
In some embodiments of the present application, the raised portion and the recessed portion each extend from a bottom surface to a top surface of the precast annular beam segment.
In some embodiments of the present application, the protrusion portion and the groove portion have a rectangular or trapezoidal transverse cross section.
According to some embodiments of the present application, a buffer layer is disposed between two adjacent prefabricated ring beam segments.
According to some embodiments of the application, a first splicing groove is further concavely arranged on one splicing end face of the prefabricated ring beam section, and a second splicing groove which is distributed in a contraposition mode with the first splicing groove is further concavely arranged on the other splicing end face of the prefabricated ring beam section; and the first splicing groove of the prefabricated ring beam section and the second splicing groove of the other adjacent prefabricated ring beam section are spliced and encircled to form a through hole, and the through hole is used for an anchor belt of the low-temperature storage tank to pass through.
In some embodiments of the present application, the first splicing groove and the second splicing groove are located on a first ring, the protrusion portion and the groove portion are located on a second ring, and the first ring is located outside the second ring.
According to the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the ring beam structure of the embodiment of the invention, the ring beam structure of the storage tank is divided into a plurality of prefabricated ring beam sections, and the prefabricated ring beam sections can be prefabricated in a factory according to the size of the storage tank and transported to the site for installation. During installation, the protruding portions of the prefabricated ring beam sections and the groove portions of the adjacent prefabricated ring beam sections are in alignment clamping connection, and therefore the end-to-end splicing is achieved. The integrity and the stability of the ring beam structure can be kept by utilizing the alignment splicing matching of the convex part and the groove part; meanwhile, the ring beam structure can be quickly assembled, so that the construction period is shortened conveniently, and the site construction time is saved.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, a conventional ring beam structure for supporting a cryogenic storage tank is an integrated ring structure. The integrated annular structure is comprehensively analyzed, calculated and determined according to various factors such as the size of the tank wall of the low-temperature storage tank, the stress condition of the tank wall and the like; and then manufacturing a corresponding pouring mold according to the size of the ring beam. The pouring mould is formed by integrally casting reinforced concrete in situ, and the pouring mould is dismantled after pouring, forming and curing. The ring beam structure manufactured by the method has the advantages of various field processes, large field area requirement, long construction period, low efficiency and poor crack resistance. In addition, in the construction process, the thermal insulation material under the ring beam and the related channel at the bottom of the ring beam are easily damaged, and the adverse effect is large.
Referring to fig. 2 and fig. 4, a ring beam structure 10 provided by an embodiment of the present invention includes a plurality of prefabricated ring beam segments 1, and the plurality of prefabricated ring beam segments 1 are sequentially spliced end to form a ring structure. According to the size of the tank wall 21 of the main container of the low-temperature storage tank, the stress condition of the ring beam structure 10 and other factors, the size of the ring beam structure 10 is calculated and determined in advance, then the ring beam of the ring structure is divided into a plurality of prefabricated ring beam sections 1 according to the size of the ring beam structure 10, and the prefabricated ring beam sections 1 can be manufactured in a factory according to the size of the prefabricated ring beam sections 1. And (3) transporting each prefabricated ring beam section 1 to a construction site, and performing on-site assembly to save on-site construction time and shorten the construction period.
Referring to fig. 3, the bottom surface of the prefabricated ring beam section 1 is supported on the insulation material 30, and the top surface of the prefabricated ring beam section 1 can be used for supporting the tank wall 21 of the cryogenic tank.
In some embodiments, the top surface of the prefabricated ring beam segment 1 is not in direct contact with the bottom of the tank wall 21, a leveling layer 20 is provided between the top surface of the prefabricated ring beam segment 1 and the bottom of the tank wall 21, and the leveling layer 20 may be a concrete structure. The use of the levelling layer 20 facilitates the levelling and mounting of the tank walls 21 and provides a flat and solid worktop for the base of the main tank container. The load transmitted from the main tank is effectively transmitted to the reinforced concrete bearing platform 40 through the heat insulation material 30.
It should be noted that the heat insulating material 30 has a complex multi-layer structure, and the heat insulating material 30 having the multi-layer structure is sequentially laid on the reinforced concrete platform 40. Wherein some of the insulation material layers are laid before the ring beam structure 10 is installed; some layers of insulation may be applied after the ring beam structure 10 is installed, such as layers of insulation on both the inside and outside of the ring beam structure 10. The multi-layer structure of the thermal insulation material 30 has sufficient supporting strength and flatness to evenly transmit the load of the main tank to the reinforced concrete bearing platform 40.
In some embodiments, the gap between the inner peripheral wall surface of the ring beam structure 10 and the thermal insulation material 30 inside the ring beam structure 10 and the gap between the outer peripheral wall surface of the ring beam structure 10 and the thermal insulation material 30 outside the ring beam structure 10 may be filled with a glass fiber cotton material. The glass fiber cotton material has a large number of tiny air gaps, and can play roles in heat preservation and insulation, sound absorption and noise reduction, safety protection and the like.
Referring to fig. 5, each prefabricated ring beam section 1 has two opposite splicing end faces on the peripheral side. One of the splicing end faces is convexly provided with a protruding part 11, and the other splicing end face is concavely provided with a groove part 12 matched with the protruding part 11.
In the ring structure that the concatenation formed, the bellying 11 of each prefabricated ring beam section 1 all aligns the joint rather than the concave part 12 of an adjacent prefabricated ring beam section 1, and then makes a plurality of prefabricated ring beam sections 1 splice end to end in proper order and form confined ring structure, utilizes the group of bellying 11 and concave part 12 to cooperate, can guarantee ring beam structure 10's wholeness and steadiness, can realize assembling fast on-the-spot simultaneously, be convenient for reduce the time limit for a project, save on-the-spot engineering time.
Referring to fig. 5, in some embodiments, both the raised portion 11 and the recessed portion 12 of the precast ring beam segment 1 extend from the bottom surface of the precast ring beam segment 1 to the top surface of the precast ring beam segment 1. Therefore, the prefabricated ring beam sections 1 are spliced with each other. In the process of assembling the ring-shaped structure, the last prefabricated ring beam section 1 can be conveniently assembled and inserted from top to bottom without considering the residual gap formed by splicing and whether enough splicing space is reserved.
Referring to fig. 6 to 8, the cross-sectional shapes and sizes of the protruding portions 11 and the groove portions 12 of the prefabricated ring beam segments 1 are in one-to-one correspondence. Each of the projecting portion 11 and the recessed portion 12 has the same lateral sectional shape, which may be rectangular or trapezoidal or triangular or semicircular, or the like. The cross-sectional shape and the structural cooperation of the protruding portion 11 and the groove portion 12 can increase the splicing area of two adjacent prefabricated ring beam sections 1, effectively improve the integrity of the ring beam structure 10, and ensure the stability of the ring beam structure 10.
Still referring to fig. 5, in some embodiments, a first splicing groove 13 is further recessed in one splicing end surface of the prefabricated ring beam segment 1, and a second splicing groove 14 is further recessed in the other splicing end surface of the prefabricated ring beam segment 1 and is aligned with the first splicing groove 13. The first splicing groove 13 and the second splicing groove 14 can both extend from the bottom surface of the prefabricated ring beam section 1 to the top surface of the prefabricated ring beam section 1 to form a through structure.
In the ring-shaped structure formed by splicing, a first splicing groove 13 of one prefabricated ring beam section 1 and a second splicing groove 14 of another adjacent prefabricated ring beam section 1 are spliced and surrounded to form a through hole, and the through hole can be penetrated by an anchor belt on the low-temperature storage tank. The upper end of the anchor belt is fixed on the low-temperature storage tank, and the lower end of the anchor belt can be fixed on the reinforced concrete bearing platform 40 after passing through the through hole. The plurality of anchor belts are uniformly distributed in the circumferential direction and have the fixing function, so that the low-temperature storage tank can be firmly erected on the basis of the ring beam, and accidents such as overturning, sliding and the like are avoided when lateral loads are applied.
Referring to fig. 4, in some embodiments, the first splicing groove 13 and the second splicing groove 14 may have a semicircular or semi-elliptical structure, so that the first splicing groove 13 and the second splicing groove 14 form a circular or elliptical structure through the formed through hole. When the anchor belt is penetrated, the clearance between the anchor belt and the through hole can be filled by adopting a glass fiber cotton material so as to improve the stability of the anchor belt.
Still referring to fig. 4, in some embodiments, the through hole formed by splicing the first splicing groove 13 and the second splicing groove 14 is located on a first ring 101 of the annular structure, the structure in which the protruding portion 11 and the groove portion 12 are aligned and clamped is located on a second ring 102 of the annular structure, and the first ring 101 is located on the outer periphery side of the second ring 102. When the tank is placed on the ring beam structure 10, the tank wall 21 of the main tank is arranged in the middle of the ring beam structure 10 between the first ring 101 and the second ring 102, so that the load of the ring beam structure 10 can be kept balanced inside and outside. Meanwhile, the anchor belt on the outer side of the tank wall 21 can conveniently penetrate through the through hole in the first ring 101, so that the overall structural layout is more reasonable.
Referring to fig. 5, and in conjunction with fig. 2 and 4, each prefabricated ring beam segment 1 has an inner side and an outer side on the circumferential side. The inner side surface is near the center of the formed ring structure. The outer side is further from the center of the formed ring structure than the inner side. In the circumferential direction of the annular structure, the length of the inner side surface is smaller than that of the outer side surface, so that when the splicing end surfaces of the prefabricated ring beam sections 1 are spliced with each other, the prefabricated ring beam sections can be gradually spliced to form a closed annular structure. And in the formed annular structure, the inner side surfaces of the prefabricated annular beam sections 1 are spliced into the inner peripheral surface of the annular structure, and the outer side surfaces of the prefabricated annular beam sections 1 are spliced into the outer peripheral surface of the annular structure.
Referring to fig. 5, in some embodiments, the inner and outer sides of the prefabricated ring beam section 1 are both planar. Therefore, when the corresponding prefabricated mould is manufactured, the prefabricated mould can be provided with a flat inner side wall surface, the manufacturing difficulty and the manufacturing cost of the prefabricated mould can be effectively reduced, and the manufacturing cost of the prefabricated ring beam section 1 is further reduced.
In some embodiments, the inner side and the outer side of the precast ring beam segment 1 may also be in a cambered surface structure. The cambered surface structure can form an annular structure which can have a complete and smooth inner circumferential surface and an outer circumferential surface.
Referring to fig. 2 and 4, in some embodiments, the prefabricated ring beam sections 1 have the same structure and size, so that the prefabricated ring beam sections 1 are arranged at equal angles along the circumference of the ring structure, the ring structure formed by the prefabricated ring beam sections 1 is a circular structure, and the correspondingly supported main container of the cryogenic storage tank is a vertical cryogenic storage tank with a circular tank wall 21.
The prefabricated ring beam sections 1 are of the same size and structure, so that the prefabricated ring beam sections 1 can be manufactured in a factory by adopting a uniform die. The size of the ring beam structure 10 can be pre-calculated and determined according to various factors such as the size of the tank wall 21 and the stress condition of the ring beam structure 10, and then the inner diameter size and the outer diameter size of the ring beam structure are pre-calculated according to the size of the ring beam structure 10. The ring structure is divided into a plurality of arc segments according to equal angles or equal arcs, and each arc segment corresponds to the size of one prefabricated ring beam segment 1. According to the size of the arc-shaped section, a corresponding pouring mold can be manufactured.
In some embodiments, during casting, a steel reinforcement framework corresponding to the size of the prefabricated ring beam segment 1 may be placed in the casting mold, and then concrete is cast, so that the prefabricated ring beam segment 1 has higher mechanical strength. Meanwhile, the steel reinforcement framework can adopt the same size structure to perform batch prefabrication.
The mould can be used for uniformly and massively pouring and manufacturing each prefabricated ring beam section 1, so that the manufacturing efficiency of the prefabricated ring beam sections 1 is effectively improved, and the manufacturing cost and the mould cost of the prefabricated ring beam sections 1 are further reduced.
When the prefabricated ring beam sections are assembled on site, because the size and the structure of each prefabricated ring beam section 1 are the same, any prefabricated ring beam section 1 can be selected for assembly without considering the assembly sequence, so that the assembly efficiency on site can be further improved, the site construction time can be further saved, and the construction period can be conveniently shortened.
Referring to fig. 4, when the splicing end faces of two adjacent prefabricated ring beam sections 1 are spliced, a certain splicing gap 103 is generated. In some embodiments, a buffer layer may be disposed in the splicing gap 103, and the buffer layer may have certain elasticity, so that the ring structure formed by splicing has certain micro-deformability, and thus, the generation of cracks on the ring beam may be effectively reduced.
In some embodiments, the buffer layer may be made of glass fiber cotton material, and is filled in the splicing gap 103 of the splicing end faces of the two prefabricated ring beam segments 1 to form the buffer layer. The glass fiber cotton material can make the buffer layer have certain elasticity, and simultaneously, the buffer layer can play the roles of heat preservation and insulation, sound absorption and noise reduction, safety protection and the like.
Based on the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the ring beam structure 10 of the low-temperature storage tank of the embodiment of the invention, the ring beam structure 10 of the storage tank is divided into a plurality of prefabricated ring beam sections 1 in advance, and the prefabricated ring beam sections 1 can be prefabricated according to the size of the storage tank in a factory and transported to the site for installation. During installation, the protruding portions 11 of the prefabricated ring beam sections 1 and the groove portions 12 of the adjacent prefabricated ring beam sections 1 are in aligned clamping connection, and therefore the end-to-end splicing is achieved. The integrity and the stability of the ring beam structure 10 can be kept by the alignment splicing matching of the convex parts 11 and the groove parts 12; meanwhile, the ring beam structure 10 can be quickly assembled, so that the construction period is shortened conveniently, and the field construction time is saved. In addition, be equipped with the buffer layer between the prefabricated ring beam section 1 that the concatenation formed, can make ring beam structure 10 have little deformability, can improve ring beam structure 10's shock resistance, effectively prevent the production of crackle.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.