CN111379270A

CN111379270A - Assembly type independent foundation and assembly method

Info

Publication number: CN111379270A
Application number: CN201811612478.4A
Authority: CN
Inventors: 尚志海; 李家富
Original assignee: Beijing Jingcheng Huayu Architecture Design And Research Institute Co ltd; MCC Capital Engineering and Research Incorporation Ltd
Current assignee: Beijing Jingcheng Huayu Architecture Design And Research Institute Co ltd; MCC Capital Engineering and Research Incorporation Ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-07-07

Abstract

The invention discloses an assembled independent foundation and an assembling method, which relate to the technical field of constructional engineering, and the assembled independent foundation comprises the following components: the upper end of the base is provided with a supporting part, a first groove is formed in the supporting part, and a first embedded part is arranged at the edge of the upper end of the supporting part; the device comprises a base, a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, wherein the first cylinder can be arranged on a supporting part of the base, a first shear key capable of being embedded into a first groove is embedded in the lower end of the first cylinder, a second embedded part is arranged at the edge of the lower end of the first cylinder, a second groove is formed in the upper end of the first cylinder, and a third embedded part is arranged at the edge of the upper end of the first cylinder; a second column body which can be arranged on the first column body, wherein a second shear resistant key which can be embedded into a second groove is embedded in the lower end of the second column body, and a fourth embedded part is arranged at the edge of the lower end of the second column body; a first steel plate and a second steel plate. This application on the basis of guaranteeing that intensity, firm degree satisfy the requirement it can assemble the independent basis that forms the just weight is heavier of taking higher cylinder.

Description

Assembly type independent foundation and assembly method

Technical Field

The invention relates to the technical field of constructional engineering, in particular to an assembled independent foundation and an assembling method.

Background

The prefabricated concrete structure is formed by assembling and connecting prefabricated components, wherein the prefabricated components are main stressed components. The prefabricated concrete structure is one of the important directions for the development of the building structure in China, is beneficial to the development of the industrialization of the building in China, improves the production efficiency, saves energy, develops green and environment-friendly buildings, and is beneficial to improving and ensuring the quality of the building engineering. Compared with a cast-in-place construction method, the assembly type structure is beneficial to green construction, because the assembly type construction can better meet the requirements of land saving, energy saving, material saving, water saving, environmental protection and the like in the green construction, the negative effects on the environment can be reduced, including noise reduction, dust raising prevention, environmental pollution reduction, clean transportation, field interference reduction, water and electricity material saving and other resources and energy sources, and the principle of sustainable development is followed.

The construction process of the cast-in-place concrete column-body independent foundation includes the steps of excavating foundation trenches on site, constructing a cushion layer, erecting a formwork, binding reinforcing steel bars and pouring concrete. The whole construction process has a plurality of defects: 1. the construction period is long, the environment is easily polluted in the construction process, and the environment is not favorable for environmental protection; 2. the foundation can be used only once, which causes resource waste; 3. the concrete quality is not easy to guarantee in the foundation field construction. Aiming at the defects of the construction, the two methods only solve the problem of prefabricating and installing certain foundations by performing layered prefabrication and assembling on site or performing overall factory prefabrication on the foundation with small volume and light weight and then transporting the foundation to the site. However, for the higher and heavier independent foundation with column, there is no assembly type solution at present, and the whole prefabrication and transportation thereof are difficult, which cannot be realized at all without large-scale hoisting equipment and transportation equipment, so that an assembly type independent foundation is needed to solve the above problems.

Disclosure of Invention

In order to overcome the above-mentioned defects in the prior art, embodiments of the present invention provide an assembled independent foundation and an assembling method, which can be assembled to form an independent foundation with a higher column and a heavier weight on the basis of ensuring the strength and the firmness satisfying the requirements.

The specific technical scheme of the embodiment of the invention is as follows:

an assembled self-contained foundation, comprising:

the upper end of the base is provided with a supporting part extending along the vertical direction, the upper end of the supporting part is provided with a first groove, a first embedded part is arranged at the edge of the upper end of the supporting part, and the first embedded part is connected with a steel bar in the supporting part;

the first column body can be arranged on the supporting part of the base, a first shear key which can be embedded into the first groove is embedded in the lower end of the first column body, a second embedded part is arranged at the edge of the lower end of the first column body and connected with the steel bars in the first column body, a second groove is formed in the upper end of the first column body, a third embedded part is arranged at the edge of the upper end of the first column body and connected with the steel bars in the first column body;

a second column body which can be arranged on the first column body, wherein a second shear resistant key which can be embedded into the second groove is embedded in the lower end of the second column body, a fourth embedded part is arranged at the edge of the lower end of the second column body, and the fourth embedded part is connected with the steel bars in the second column body;

the first steel plate is welded between the first embedded part and the second embedded part, and the second steel plate is welded between the third embedded part and the fourth embedded part.

Preferably, the edge of the upper end of the supporting part is provided with a first notch for accommodating the first embedded part, and the first embedded part is welded and connected with the longitudinal rib in the supporting part.

Preferably, the edge of the lower end of the first column body is provided with a second notch for accommodating the second embedded part, and the second embedded part is welded with the longitudinal rib in the first column body.

Preferably, the edge of the upper end of the first column body is provided with a third notch for accommodating the third embedded part, and the third embedded part is welded and connected with the longitudinal rib in the first column body.

Preferably, the edge of the lower end of the second column body is provided with a fourth notch for accommodating the fourth embedded part, and the fourth embedded part is welded with the longitudinal rib in the second column body.

Preferably, a first channel communicated with the first groove is formed in the base, and grouting materials are filled between the lower end face of the first column and the supporting portion and in the first groove.

Preferably, a second channel communicated with the second groove is formed in the first column body, and grouting materials are filled between the lower end face of the second column body and the upper end face of the first column body and in the second groove.

Preferably, the first embedded part, the second embedded part, the third embedded part, the fourth embedded part, the first steel plate and the second steel plate are made of Q345 steel.

Preferably, a first hanging ring is arranged on the side wall of the first column body, a second hanging ring is arranged on the side wall of the second column body, and a third hanging ring is arranged on the upper end face of the base.

Preferably, a fourth groove is formed in the upper end face of the second column, and the cross section of the groove is trapezoidal; or a bolt is embedded at the upper end of the second column body, the head of the bolt is positioned in the second column body, and the end part of a screw rod of the bolt is exposed out of the upper end surface of the second column body; or L-shaped reinforcing steel bars are buried at the upper end of the second column body, one bent end of each L-shaped reinforcing steel bar is located in the second column body, and the other end of each L-shaped reinforcing steel bar is exposed out of the upper end face of the second column body.

Preferably, the number of the first embedded parts is multiple, the number of the second embedded parts is multiple, the number of the first steel plates, the number of the first embedded parts and the number of the second embedded parts are distributed around the first cylinder and the supporting part, the number of the third embedded parts is multiple, the number of the fourth embedded parts is multiple, the number of the second steel plates, the number of the third embedded parts and the number of the fourth embedded parts are distributed around the first cylinder and the second cylinder, the number of the first embedded parts and the number of the second embedded parts are welded with one of the first steel plates, and the number of the third embedded parts and the number of the fourth embedded parts are welded with one of the second steel plates.

An assembling method adopting any one of the assembled independent foundations comprises the following steps:

hoisting the first column so that the first shear key is aligned with the first groove and the first embedded part is aligned with the second embedded part;

placing the first column body on a supporting part, and embedding the first shear key into the first groove;

welding the first steel plate on one side of the first embedded part and one side of the second embedded part, which are opposite to the longitudinal bars;

lifting the second cylinder so that the second shear resistant key is aligned with the second groove and the third embedded part is aligned with the fourth embedded part;

placing the second cylinder onto the first cylinder, wherein the second shear resistant key is embedded in the second groove;

and welding the second steel plate on one side of the third embedded part and one side of the fourth embedded part, which are opposite to the longitudinal bars.

Preferably, the method further comprises the steps of:

grouting materials are injected between the lower end face of the first column body and the supporting part and into the first groove through a first channel communicated with the first groove;

and grouting materials are injected between the lower end face of the second column body and the upper end face of the first column body and into the second groove through a second channel communicated with the second groove.

The technical scheme of the invention has the following remarkable beneficial effects:

to the whole cast-in-place basis of traditional independent area cylinder, no matter be cup mouth formula, anchor bolt formula or direct-burried reinforcing bar formula all need on-spot formwork, tie up the reinforcing bar, and the concrete is poured into water, needs to carry out the maintenance to the concrete, need can carry out superstructure's construction after the concrete reaches design intensity. And the independent basis aim at of assembled in this application is solved and is taken higher cylinder, the design and the construction problem of the independent basis assembled that weight is heavier, the independent basis is through global design, the foundation member is then through the segmentation design, and simultaneously, the foundation member is prefabricated at the segmentation of mill, thereby connect base and first cylinder through burying the piece underground with steel sheet welded connection at the scene, first cylinder and second cylinder, the rethread sets up first shear key between base and first cylinder, set up second shear key between first cylinder and second cylinder in order to guarantee that the shearing force along the horizontal direction that bears can effectively transmit for the base on first cylinder and the second cylinder, and then assemble and form whole independent basis. The construction method can save on-site formwork erecting, concrete pouring and maintenance time, can quickly perform subsequent construction after assembly, saves construction period, is green and environment-friendly in construction process, overcomes the defect of foundation on-site concrete pouring construction, meets the requirement of vigorously pushing the assembled building in China, and has great practical significance and engineering application value.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.

FIG. 1 is a general assembly drawing of an assembled self-contained foundation in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a first structure of a second cylinder according to an embodiment of the present disclosure;

FIG. 3 is a second structural diagram of a second post according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a third structure of the second column according to the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first column according to an embodiment of the present invention;

FIG. 6 is a front view of a base in an embodiment of the invention;

FIG. 7 is a schematic view of the joint of the steel plates in the embodiment of the present invention.

Reference numerals of the above figures:

1. a base; 11. a third hoisting ring; 12. a support portion; 13. a first groove; 14. a first channel; 15. a first embedded part; 2. a first column; 21. a first hanging ring; 22. a second embedded part; 23. a third embedded part; 24. a first shear key; 25. a second groove; 26. a second channel; 3. a second cylinder; 31. a second hoisting ring; 32. a fourth embedded part; 33. a bolt; 34. l-shaped steel bars; 35. a third groove; 36. a second shear bond; 4. a first steel plate; 5. a second steel plate; 6. longitudinal ribs; 7. and (5) cushion coating.

Detailed Description

The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to assemble and form a heavy independent foundation with a high column on the basis of ensuring that the strength and the firmness meet the requirements, an assembled independent foundation is provided in the embodiment of the application, fig. 1 is a general assembly diagram of the assembled independent foundation in the embodiment of the invention, and as shown in fig. 1, the assembled independent foundation can comprise: the steel bar embedded type steel bar support comprises a base 1, wherein a support part 12 extending in the vertical direction is arranged at the upper end of the base 1, a first groove 13 is formed in the upper end of the support part 12, a first embedded part 15 is arranged at the edge of the upper end of the support part 12, and the first embedded part 15 is connected with steel bars in the support part 12; the embedded steel bar shear connector comprises a first cylinder 2 which can be arranged on a supporting part 12 of a base 1, wherein a first shear key 24 which can be embedded into a first groove 13 is embedded in the lower end of the first cylinder 2, a second embedded part 22 is arranged at the edge of the lower end of the first cylinder 2, the second embedded part 22 is connected with steel bars in the first cylinder 2, a second groove 25 is formed in the upper end of the first cylinder 2, a third embedded part 23 is arranged at the edge of the upper end of the first cylinder 2, and the third embedded part 23 is connected with the steel bars in the first cylinder 2; the second shear key 36 capable of being embedded into the second groove 25 is embedded in the lower end of the second column body 3, a fourth embedded part 32 is arranged at the edge of the lower end of the second column body, and the fourth embedded part 32 is connected with the steel bars in the second column body 3; a first steel plate 4 welded to the first embedment 15 and the second embedment 22, and a second steel plate 5 welded to the third embedment 23 and the fourth embedment 32.

Fig. 6 is a front view of the base in the embodiment of the present invention, and as shown in fig. 6, the base 1 extends in a horizontal direction and has a certain thickness to secure strength. The base 1 is prefabricated in a factory, and the size, the thickness and the using amount of the steel bars are specifically determined after force calculation. The cross section of the base 1 may be rectangular, square, circular or other irregular shapes, etc., and is not limited in this application, and the cross section of the base 1 may be determined according to actual requirements.

As shown in fig. 6, the upper end of the base 1 has a support part 12 extending in a vertical direction, and the support part 12 of the upper part of the base 1 has a smaller cross-section than the cross-section of the lower part of the base 1. The cross section of the support portion 12 in the horizontal direction may be rectangular, square, circular, or other irregular shapes, etc. Be provided with third rings 11 on the up end at base 1's the left and right sides both ends, when base 1 was prefabricated in the mill, third rings 11 were pre-buried to be established in base 1, and it can be connected with the reinforcing bar in the base 1 to strengthen the firm intensity between third rings 11 and the base 1. The edge of the upper end of the supporting part 12 is provided with a first notch for accommodating a first embedded part 15, the edge of the upper end of the supporting part 12 is provided with the first embedded part 15, and the first embedded part 15 is welded with the longitudinal rib 6 in the supporting part 12. The depth of the first notch is determined according to the thickness of the protective layer of the steel bar. The first notch is formed because the thickness of the first embedded part 15 is usually smaller than the thickness of the steel bar protection layer on the periphery of the supporting part, the first embedded part 15 needs to be welded with the vertical steel bars on the periphery of the supporting part, the first embedded part 15 is formed and arranged on the periphery of the supporting part, and the first notch along the periphery of the top surface of the supporting part is also formed. When the cross section of the support portion 12 is rectangular, the distribution of the first notches is also rectangular. The middle part of the upper end of the support part 12 is provided with a first groove 13, and the first groove 13 is used for embedding a first shear key 24. In order to ensure the connection strength between the first embedded part 15 and the steel bars in the base 1, the first embedded part 15 is preferably made of Q345 steel.

As shown in fig. 1 and 6, a first channel 14 communicated with the first groove 13 is opened in the base 1, grouting material is filled between the lower end face of the first column 2 and the supporting portion 12 and in the first groove 13 through the first channel 14, and the grouting material is used for filling a gap between the members so as to uniformly transmit vertical load.

Fig. 5 is a schematic structural diagram of a first column in an embodiment of the present invention, and fig. 7 is a schematic structural diagram of a steel plate joint in an embodiment of the present invention, as shown in fig. 5 and 7, when assembled, the first column 2 is configured to be disposed on the supporting portion 12 of the base 1. In the embodiment, when the first column body 2 is prefabricated, a first shear key 24 capable of being embedded in the first groove 13 is embedded in the middle of the lower end of the first column body 2, and the upper end portion of the first shear key 24 is located in the first column body 2 and can be connected with the steel bars in the first column body 2. The edge of the lower end of the first column 2 has a second notch capable of accommodating the second embedded part 22, and the arrangement mode of the second notch is similar to that of the first notch, which is not described herein again. The edge of the lower end of the first column body 2 is provided with a plurality of second embedded parts 22 extending along the vertical direction, and the second embedded parts 22 are welded with the longitudinal bars 6 in the first column body 2. The second recess 25 that is used for supplying second shear resistant key 36 to imbed is seted up at the upper end middle part of first cylinder 2, and the edge of the upper end of first cylinder 2 is equipped with third built-in fitting 23, and third built-in fitting 23 extends along vertical direction, and third built-in fitting 23 can be a plurality of, and the reinforcing bar in the third built-in fitting 23 joint support portion 12, specifically speaking, the vertical muscle 6 looks welded connection in third built-in fitting 23 and the first cylinder 2. The edge of the upper end of the first column 2 has a third notch capable of accommodating the third embedded part 23, and the arrangement mode of the third notch is similar to that of the first notch, which is not described herein again. The edge of the upper end of the first column body 2 is provided with a plurality of third embedded parts 23 which extend along the vertical direction, and the third embedded parts 23 are welded with the longitudinal ribs 6 in the first column body 2.

In order to ensure the connection strength between the second embedded part 22 and the third embedded part 23 and the steel bars in the first column 2, the second embedded part 22 and the third embedded part 23 are preferably made of Q345 steel. The reinforcement and the upper end face of the first column 2 and the number of the second embedded parts 22 and the third embedded parts 23 can be calculated and determined according to the upper load.

As shown in fig. 1 and 5, a second channel 26 communicated with the second groove 25 is formed in the first cylinder 2, and grouting material is filled between the lower end face of the second cylinder 3 and the upper end face of the first cylinder 2 and in the second groove 25 through the second channel 26, and is used for filling a gap between the members so as to uniformly transfer vertical load.

Fig. 4 is a third structural diagram of the second column in the embodiment of the present invention, as shown in fig. 1, 4 and 7, when assembled, the second column 3 is used to be disposed on the first column 2. In the present embodiment, when the second column 3 is prefabricated, a plurality of fourth embedded parts 32 may be provided, the fourth embedded parts 32 are provided in the edge of the lower end of the second column 3, and the fourth embedded parts 32 are welded to the longitudinal ribs 6 in the second column 3, which extend in the vertical direction. Therefore, as shown in fig. 4, the edge of the lower end of the second column 3 has a fourth notch for accommodating the fourth embedded part 32, and during the assembling process, the fourth embedded part 32 is welded and connected with the longitudinal rib 6 in the second column 3. The forming principle and the arrangement mode of the fourth gap are the same as those of the first gap, and the description is omitted here. A second shear key 36 capable of being embedded into the second groove 25 is embedded in the middle of the lower end of the second column body 3, and the upper end part of the second shear key 36 is positioned in the second column body 3 and can be connected with the steel bars in the second column body 3.

In order to ensure the connection strength between the fourth embedded part 32 and the reinforcing steel bars in the second column 3, Q345 steel is preferably selected for the fourth embedded part 32. The reinforcement in the second column 3, the size of the upper end face and the number of the fourth embedded parts 32 can be calculated and determined according to the upper load. As shown in fig. 1 and 7, the first steel plates 4 are welded to the first embedded parts 15 and the second embedded parts 22, and are located on the sides of the first embedded parts 15 and the second embedded parts 22 facing away from the longitudinal ribs 6 to connect the first embedded parts 15 and the second embedded parts 22, on one hand, the first steel plates are used for improving the connection strength between the supporting part 12 and the first column body 2, and simultaneously, the first steel plates are used for enhancing the capability of transmitting the horizontal shear force, and on the other hand, the peripheries of the gap between the first column body 2 and the supporting part 12 can be sealed to a certain degree. When the gap between the lower end surface of the first column body 2 and the supporting part 12 is filled with grouting material through the first passage 14, the sealing function of the first steel plate 4 can prevent the grouting material from overflowing. The first steel plate 4 is preferably made of Q345 steel, so that the firmness of the welding between the first embedded part 15 and the second embedded part 22 and the capability of transmitting horizontal shear force per se can be ensured.

As shown in fig. 1 and 7, the second steel plate 5 is welded to the third embedded part 23 and the fourth embedded part 32, and is located on one side of the third embedded part 23 and the fourth embedded part 32, which faces away from the longitudinal ribs 6, so as to connect the third embedded part 23 and the fourth embedded part 32, on one hand, the second steel plate is used for improving the connection strength between the second column body 3 and the first column body 2, and simultaneously, the second steel plate is used for enhancing the capability of transferring the horizontal shear force, and on the other hand, the periphery of the gap between the first column body 2 and the second column body 3 can be sealed to a certain extent. When the gap between the lower end surface of the second column body 3 and the upper end surface of the first column body 2 is filled with grouting material through the second passage 26, the sealing effect of the second steel plate 5 can prevent the grouting material from overflowing. The second steel plate 5 is preferably made of Q345 steel, so that the firmness of the welding between the second steel plate and the third embedded part 23 and the fourth embedded part 32 and the capability of transmitting horizontal shear force per se can be ensured.

When the first embedded parts 15 are multiple, and the second embedded parts 22 are multiple, the first steel plates 4 may also be multiple, the first steel plates 4, the first embedded parts 15, and the second embedded parts 22 are distributed around the first column 2 and the support portion 12, and the multiple first embedded parts 15 and the multiple second embedded parts 22 may be welded together with one first steel plate 4. For example, when the horizontal cross-sections of the support portion 12 and the first column 2 are rectangular, the first steel plates 4 may be four, which are respectively located on one side of the rectangle, and each first steel plate 4 is welded to the first embedded part 15 and the second embedded part 22 on one side of the rectangle. Similarly, when the number of the third embedded parts 23 is multiple and the number of the fourth embedded parts 32 is multiple, the number of the second steel plates 5 may also be multiple, the second steel plates 5, the third embedded parts 23, and the fourth embedded parts 32 are distributed around the second column body 3 and the first column body 2, and the multiple third embedded parts 23 and the fourth embedded parts 32 may be welded together with one second steel plate 5.

Fig. 2 is a first structural schematic diagram of the second column according to the embodiment of the present invention, and as shown in fig. 2, a third groove 35 is formed on the upper end surface of the second column 3, and the cross section of the third groove 35 may be trapezoidal for connecting with other components prefabricated on the upper portion. In a second embodiment, fig. 3 is a second structural schematic diagram of a second column in an embodiment of the present invention, as shown in fig. 3, a vertically arranged bolt 33 may be embedded in an upper end of the second column 3, a head of the bolt 33 is located inside the second column 3, an end of a screw rod of the second bolt 33 is exposed out of an upper end surface of the second column 3, and the upper portion of the second column 3 is connected to other prefabricated components through the bolt 33. In the third embodiment, as shown in fig. 4, an L-shaped steel bar 34 is embedded in the upper end of the second column 3, one end of the L-shaped steel bar 34, which is bent, is located in the second column 3, and the other end of the L-shaped steel bar 34 is exposed out of the upper end surface of the second column 3, so that the upper cast-in-place concrete structure can be connected in a manner of reserving a dowel.

As shown in fig. 2 and 3, during the prefabrication and processing in the factory, a second hanging ring 31 may be disposed on a side wall of the second column 3, and the second hanging ring 31 may be welded to a steel bar inside the second column 3, so as to ensure the firmness of the connection between the second hanging ring 31 and the second column 3.

As shown in fig. 5, when prefabricating and processing are performed in a factory, the side wall of the first column body 2 may also be provided with a first hanging ring 21, and the first hanging ring 21 may be welded to a steel bar inside the first column body 2.

In order to prevent the exposed parts of the first embedded part 15, the second embedded part 22, the third embedded part 23, the fourth embedded part 32, the first steel plate 4, the second steel plate 5, the first hoisting ring 21, the second hoisting ring 31 and the third hoisting ring 11 from being corroded, asphalt can be coated on the exposed parts for corrosion protection.

The application also provides an assembly method adopting any one of the assembly independent bases, and the assembly method comprises the following steps:

when the embedded parts are prefabricated in a factory, the first embedded parts 15 are connected to the reinforcing steel bars on the edge of the upper end of the base 1, and the second embedded parts 22 are connected to the reinforcing steel bars on the edge of the lower end of the first column body 2. The first column 2 is hoisted such that the first shear key 24 is aligned with the first recess 13 of the foundation 1 and the first embedment 15 is aligned with the second embedment 22.

The first column 2 is lowered onto the support portion 12 of the base 1, and the first shear key 24 is embedded in the first groove 13.

And welding a first steel plate 4 on one side of the first embedded part 15 and the second embedded part 22, which faces away from the longitudinal rib 6, so that the base 1 and the first column body 2 are connected together. The number of the first steel plates 4 may be determined according to the first embedment 15, the cross section of the first cylinder 2 of the support portion 12, and the like. As far as possible, the first steel plate 4 seals the periphery of the gap between the first column 2 and the support 12 to a certain extent.

When the embedded parts are prefabricated in a factory, the third embedded parts 23 are connected to the reinforcing steel bars on the edge of the upper end of the first column body 2, and the fourth embedded parts 32 are connected to the reinforcing steel bars on the edge of the lower end of the second column body 3. The second column 3 is hoisted such that the second shear key 36 is aligned with the second groove 25 of the first column 2 and the third embedment 23 is aligned with the fourth embedment 32.

The second cylinder 3 is lowered onto the first cylinder 2 so that the second shear key 36 is embedded in the second groove 25.

And welding a second steel plate 5 on one side of the third embedded part 23 and the fourth embedded part 32, which is opposite to the longitudinal rib 6, so that the second column body 3 is connected with the first column body 2. The number of the second steel plates 5 may be determined according to the cross sections of the third embedment 23, the fourth embedment 32, the second cylinder 3 and the first cylinder 2, and so on. As much as possible, the second steel plate 5 seals the periphery of the gap between the first cylinder 2 and the second cylinder 3 to some extent.

Grouting material is injected between the lower end surface of the first column 2 and the support part 12 and into the first groove 13 through a first passage 14 communicating with the first groove 13.

Grouting material is injected between the lower end face of the second column body 3 and the upper end face of the first column body 2 and the second groove 25 through a second channel 26 communicated with the second groove 25.

The independent basis of assembled passes through segmentation design in this application, carries out the prefabrication with base 1, first cylinder 2, second cylinder 3 at the segmentation of mill to can directly assemble the assembly on bed course 7 at the job site. During assembly, only the first shear key 24 in the first cylinder 2 is required to be embedded into the first groove 13 of the base 1, the second shear key 36 in the second cylinder 3 is required to be embedded into the second groove 25 of the first cylinder 2, the first steel plate 4 is welded on one side, back to the longitudinal rib 6, of the first embedded part 15 and the second embedded part 22, and the second steel plate 5 is welded on one side, back to the longitudinal rib 6, of the third embedded part 23 and the fourth embedded part 32, so that the base 1, the first cylinder 2 and the second cylinder 3 are firmly connected, the shear force borne on the first cylinder and the second cylinder in the horizontal direction can be effectively transmitted to the base, and finally, grouting materials are filled in a gap between the adjacent upper member and the lower member, so that vertical loads of the independent foundation can be uniformly transmitted. To the whole cast-in-place basis of traditional independent area cylinder, no matter be cup mouth formula, anchor bolt formula or direct-burried reinforcing bar formula all need on-spot formwork, tie up the reinforcing bar, and the concrete is poured into water, needs to carry out the maintenance to the concrete, need can carry out superstructure's construction after the concrete reaches design intensity. And the assembled independent foundation in this application can practice thrift on-the-spot formwork, concrete placement and maintenance time, can carry out follow-up construction fast after assembling the completion, practices thrift the time limit for a project, and the work progress green. The invention overcomes the defects of foundation on-site concrete pouring construction, meets the requirement of vigorously promoting assembly type buildings in China, and has great practical significance and engineering application value.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembled self-contained foundation, comprising:

the first steel plate is welded on the first embedded part and the second embedded part, and the second steel plate is welded on the third embedded part and the fourth embedded part.

2. The fabricated independent foundation of claim 1, wherein the edge of the upper end of the supporting part is provided with a first notch for accommodating the first embedded part, the depth of the first notch is determined according to the thickness of the protective layer of the steel bar, and the first embedded part is welded with the longitudinal bar in the supporting part.

3. The fabricated independent foundation of claim 1, wherein the lower end of the first column body has a second notch at an edge thereof for receiving the second embedded part, the depth of the second notch is determined according to the thickness of the protective layer of the steel bar, and the second embedded part is welded to the longitudinal bar in the first column body.

4. The fabricated independent foundation of claim 1, wherein an edge of the upper end of the first column body is provided with a third notch for accommodating the third embedded part, the depth of the third notch is determined according to the thickness of a protective layer of a steel bar, and the third embedded part is welded with the longitudinal bar in the first column body.

5. The fabricated independent foundation of claim 1, wherein the edge of the lower end of the second column body is provided with a fourth notch for accommodating the fourth embedded part, the depth of the fourth notch is determined according to the thickness of the protective layer of the steel bar, and the fourth embedded part is welded with the longitudinal bar in the second column body.

6. The assembled independent foundation of claim 1, wherein a first channel communicated with the first groove is formed in the base, and grouting materials are filled between the lower end face of the first column and the supporting part and in the first groove.

7. The fabricated independent foundation of claim 1, wherein a second channel communicated with the second groove is formed in the first column body, and grouting materials are filled between the lower end face of the second column body and the upper end face of the first column body and in the second groove.

8. The fabricated free-standing foundation of claim 1, wherein the first embedment, the second embedment, the third embedment, the fourth embedment, the first steel plate, and the second steel plate are made of Q345 steel.

9. The assembled independent foundation of claim 1, wherein a first hanging ring is arranged on the side wall of the first column body, a second hanging ring is arranged on the side wall of the second column body, and a third hanging ring is arranged on the upper end face of the base.

10. The assembled independent foundation of claim 1, wherein a fourth groove is formed in the upper end surface of the second column, and the cross section of the groove is trapezoidal; or a bolt is embedded at the upper end of the second column body, the head of the bolt is positioned in the second column body, and the end part of a screw rod of the bolt is exposed out of the upper end surface of the second column body; or L-shaped reinforcing steel bars are buried at the upper end of the second column body, one bent end of each L-shaped reinforcing steel bar is located in the second column body, and the other end of each L-shaped reinforcing steel bar is exposed out of the upper end face of the second column body.

11. The fabricated independent foundation of claim 1, wherein the first embedded parts are a plurality of embedded parts, the second embedded parts are a plurality of embedded parts, the first steel plates are a plurality of steel plates, the first embedded parts and the second embedded parts are distributed around the first column and the supporting part, the third embedded parts are a plurality of embedded parts, the fourth embedded parts are a plurality of steel plates, the second steel plates, the third embedded parts and the fourth embedded parts are distributed around the first column and the second column, the first embedded parts and the second embedded parts are welded to the first steel plate, and the third embedded parts and the fourth embedded parts are welded to the second steel plate.

12. A method of assembling a self-contained foundation of any one of claims 1 to 11, comprising the steps of:

welding the first steel plate on one side of the first embedded part and one side of the second embedded part, which are opposite to the longitudinal ribs;

13. The method of assembling of claim 12, further comprising the steps of: