Recyclable assembly type prefabricated reinforced concrete double-cage construction elevator foundation

Abstract

The utility model discloses a turnover assembly type prefabricated reinforced concrete double-cage construction elevator foundation, which relates to the technical field of building construction, and particularly structurally comprises a plurality of concrete prefabricated blocks which are mutually spliced to form an elevator foundation; the hanging rings are arranged on the concrete precast block at intervals; the multiple anti-collision protection frames are arranged on the periphery of the concrete precast block; and the multiple connecting assemblies are arranged between any two adjacent concrete precast blocks at intervals. The utility model solves the technical problem that the waste of the foundation of the existing construction elevator is easy to cause resource waste.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a turnover assembled prefabricated reinforced concrete double-cage construction elevator foundation. Background Art

[0002] The existing double-cage construction elevator foundation size is mostly 4.6m*3.8m*0.3m, and the concrete consumption is about 5.3m2. After the main building is constructed, the upper construction elevator related mechanical facilities will be dismantled and transported, and the foundation of the construction elevator will often be abandoned on site. The abandoned foundation often requires manpower to break, and after the demolition is completed, it will be discarded as construction waste or recycled. According to statistics, global cement production accounts for 3.8% of the world's total carbon emissions, and the reuse of cement products is a more effective way to reduce emissions. Utility Model Content

[0003] The utility model aims to provide a revolving assembled prefabricated reinforced concrete double-cage construction elevator foundation, which solves the technical problem in the prior art that the construction elevator foundation is easily abandoned and causes waste of resources.

[0004] The present application embodiment discloses a revolving assembled prefabricated reinforced concrete double-cage construction elevator foundation, comprising:

[0005] A plurality of prefabricated concrete blocks, wherein the prefabricated concrete blocks are spliced ​​together to form an elevator foundation;

[0006] A plurality of lifting rings are arranged at intervals on the prefabricated concrete blocks;

[0007] A plurality of anti-collision guard frames are arranged around the prefabricated concrete blocks;

[0008] A plurality of connection components are arranged at intervals between any two adjacent prefabricated concrete blocks.

[0009] The present application adopts multiple prefabricated concrete blocks for assembly, which is convenient for subsequent lifting and replacement, thereby saving energy.

[0010] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0011] Furthermore, four lifting rings are installed at intervals on each of the precast concrete blocks. The beneficial effect of this step is that the precast concrete blocks can be lifted easily through the lifting rings.

[0012] Furthermore, the prefabricated concrete block comprises:

[0013] A first prefabricated block, wherein the first prefabricated block is one piece, and first tongue and groove are arranged on all four sides of the first prefabricated block;

[0014] A second prefabricated block, wherein the second prefabricated block is two pieces, and the second prefabricated blocks are respectively arranged on both sides of the first prefabricated block, and a second tongue and groove are arranged on one side of the second prefabricated block facing the first prefabricated block and on two sides adjacent thereto;

[0015] The third prefabricated block, there are four third prefabricated blocks, and the third prefabricated blocks are respectively located on the upper and lower sides of the first prefabricated block in groups of two, and the third prefabricated block is provided with a third tongue and groove on one side facing the first prefabricated block and the second prefabricated block. The beneficial effect of adopting this step is that the stability of the connection is ensured by the mutual cooperation of multiple prefabricated blocks and the tongue and groove.

[0016] Furthermore, the width of the first tongue and groove, the second tongue and groove, and the third tongue and groove are 200 mm and 145 mm respectively.

[0017] Furthermore, a 5 mm thick steel lining is provided inside the first tongue and groove, the second tongue and groove, and the third tongue and groove. The beneficial effect of this step is that the stability of the tongue and groove connection and the flatness of the contact surface can be ensured by the steel lining.

[0018] Furthermore, the connection component comprises:

[0019] A bolt sleeve, embedded in the prefabricated concrete block;

[0020] The connecting bolt is arranged in the bolt sleeve, and the diameter of the connecting bolt is 35 mm. The beneficial effect of adopting this step is that the connecting bolt can ensure the stability of the connection.

[0021] Furthermore, the precast concrete block is made of a HRB400 steel mesh layer with a diameter of 14 mm and C35 concrete. The beneficial effect of adopting this step is to ensure the overall strength of the precast concrete block through the corresponding structure.

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] The utility model provides a plurality of prefabricated concrete blocks, which are assembled and fixed with subsequent connecting bolts to form a splicing, and finally form an elevator foundation; after the assembly is completed, the blocks are disassembled and hoisted, thereby saving materials and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a structural schematic diagram of a revolving assembled prefabricated reinforced concrete double-cage construction elevator foundation according to a specific embodiment of the utility model;

[0026] Figure 2 for Figure 1 A front view of the first prefabricated block;

[0027] Figure 3 for Figure 2 EE section view of the first prefabricated block;

[0028] Figure 4 for Figure 2 FF section view of the first prefabricated block;

[0029] Figure 5 for Figure 1 The main view of the second prefabricated block;

[0030] Figure 6 for Figure 5 A cross-sectional view of the second prefabricated block in the middle;

[0031] Figure 7 for Figure 5 A cross-sectional view of the second prefabricated block in the middle;

[0032] Figure 8 for Figure 1 The main view of the third prefabricated block;

[0033] Fig. 9 for Figure 8 A sectional view of the third prefabricated block in the direction II;

[0034] Fig.10 for Figure 1 A schematic diagram of the overlap of the second prefabricated block and the third prefabricated block;

[0035] 1- Prefabricated concrete block; 2- Lifting ring; 3- Anti-collision guard frame; 4- Connection assembly;

[0036] 101-first prefabricated block; 102-first tongue and groove; 103-second prefabricated block; 104-second tongue and groove; 105-third prefabricated block; 106-third tongue and groove; 107-steel lining plate;

[0037] 401-bolt sleeve; 402-connecting bolt. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0039] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] Example:

[0043] like Figure 1-9 As shown, the present application discloses a rotatable assembled prefabricated reinforced concrete double-cage construction elevator foundation, which can meet the strength requirements of bending resistance, shear resistance, punching resistance, etc., and can also be rotatably used.

[0044] The specific structure of this application includes:

[0045] A plurality of prefabricated concrete blocks 1, wherein the prefabricated concrete blocks 1 are spliced ​​together to form an elevator foundation;

[0046] A plurality of lifting rings 2 are arranged at intervals on the prefabricated concrete block 1, and the lifting rings 2 are used to facilitate lifting, splicing and turnover;

[0047] A plurality of anti-collision guard frames 3 are arranged around the precast concrete block 1, so that the precast concrete block 1 can be protected from being damaged by collision, that is, the anti-collision guard frames 3 are used for protection;

[0048] A plurality of connection components 4 are arranged at intervals between any two adjacent precast concrete blocks 1. The connection components 4 can be used to fix the precast concrete blocks 1, that is, to stably assemble them after assembly.

[0049] In order to ensure stability during subsequent lifting, four lifting rings 2 are installed at intervals on each of the prefabricated concrete blocks 1 .

[0050] In order to achieve assembly, Figure 2-10 As shown, while ensuring the stability after assembly, the prefabricated concrete block 1 includes:

[0051] A first prefabricated block 101, wherein the first prefabricated block 101 is one piece, and first tongues and grooves 102 are arranged around the first prefabricated block 101;

[0052] The second prefabricated block 103 includes two second prefabricated blocks 103, and the second prefabricated blocks 103 are respectively arranged on both sides of the first prefabricated block 101, and the second prefabricated block 103 is provided with a second tongue and groove 104 on one side facing the first prefabricated block 101 and on both sides adjacent thereto;

[0053] The third prefabricated block 105 includes four third prefabricated blocks 105 , and the third prefabricated blocks 105 are arranged in groups of two on the upper and lower sides of the first prefabricated block 101 , respectively. A third tongue and groove 106 is provided on one side of the third prefabricated block 105 facing the first prefabricated block 101 and the second prefabricated block 103 .

[0054] For further explanation of the above precast concrete blocks 1, the precast concrete blocks 1 in the present application are specifically divided into three types, wherein the middle one is a first precast block 101, a second precast block 103 is arranged on the left and right sides respectively, and two third precast blocks 105 are arranged on the upper and lower sides respectively, and each precast block is spliced ​​by tongue and groove, and then connected by a connecting component 4 to ensure stability after splicing.

[0055] In order to ensure the stability of the splicing, the present application designs the specific dimensions of the tongue and groove, wherein the width of the first tongue and groove 102, the second tongue and groove 104 and the third tongue and groove 106 are 200 mm and 145 mm respectively.

[0056] In order to further enhance the stability of the connection between the tongues and grooves, a 5 mm thick steel lining plate 107 is provided inside the first tongue and groove 102, the second tongue and groove 104 and the third tongue and groove 106. This, combined with the subsequent connection components, can ensure the stability of the connection.

[0057] Specifically, the connection component 4 includes:

[0058] The bolt sleeve 401 is embedded in the prefabricated concrete block 1;

[0059] The connecting bolt 402 is disposed in the bolt sleeve 401 , and the diameter of the connecting bolt 402 is 35 mm. After splicing, the connection and fixation are performed by the connecting bolt 402 .

[0060] The prefabricated concrete block 1 is made of a HRB400 steel mesh layer with a diameter of 14 mm and C35 concrete.

[0061] The structure of this application is further described as follows:

[0062] Among them, the longitudinal reinforcement of the HRB400 steel mesh layer is double-layered, and the longitudinal reinforcement is located on the outer skin of the foundation. The transverse reinforcement is double-layered, and the transverse reinforcement is located on the inner skin of the foundation. A plum blossom-shaped hook arrangement is set between the two layers of steel mesh, and the entire structural plate is cast with C35 concrete.

[0063] The lifting ring is made of plain round steel bars into a horse-stool-shaped steel bar, the top of the lifting ring is flush with the top surface of the road slab, and a hole is left at the lifting ring to facilitate the lifting of the hook.

[0064] The following is a further description of the preparation method of this application:

[0065] 1) Installation of anti-collision guard frame: a. Make blanking mold according to the size of the drawing and carry out batch blanking; b. Weld and assemble the upper frame and lower frame in batches respectively. To reduce the deformation of the upper and lower frames, the upper and lower frames are respectively provided with auxiliary fixing rods in the horizontal direction by using steel bars; c. Finally, assemble the upper frame and the lower frame to form an integral frame. To reduce the deformation of the frame, steel bars are used to set auxiliary fixing rods in the vertical direction; d. Process the angle steel anchor steel bars and weld the anchor steel bars on the angle steel;

[0066] 2) Installation of steel lining at pre-buried tongue and groove: Position and install the steel lining for pre-buried connection, and fix the anchor end of the lining and the upper steel bar by electric welding;

[0067] 3) Installation of steel bar binding: a. Cut steel bars according to the size on the drawing; b. Lift the prefabricated foundation steel bar frame to the flat and smooth concrete cushion layer planned in advance as the production site, and lay a film for easy lifting; c. The order of steel bar binding and installation from bottom to top is: bottom longitudinal bars, bottom transverse bars, upper transverse bars, upper longitudinal bars; d. Position and install the pre-made lifting rings according to the positions on the drawings, and the top of the lifting rings should be flush with the top surface of the slab; e. Position and install 4 M22 base bolts according to the positions on the drawings in advance to facilitate the later connection of the guide frame.

[0068] 4) Reserved bolt holes: After the reinforcement binding is installed, install the lifting ring, locate and install the lifting ring according to the drawing, and fix it by spot welding; make the reserved hole wooden mold according to the reserved bolt size, with the top and bottom connected, and at the same time, reserve a concave hole for the bolt head position at the bottom of the plate for the lower tongue and groove bolt hole to ensure that it is flush with the bottom of the plate after the bolt is installed.

[0069] 5) Reserved holes for lifting rings: The reserved hole wooden formwork is inserted into the lifting ring, the top of the wooden formwork is flush with the top of the slab, and is firmly fixed to the surrounding steel bars;

[0070] 6) Formwork support: After the reinforcement is tied, the side formwork is supported along the angle steel frame of the foundation plate and reinforced firmly;

[0071] 7) Concrete pouring: After all the previous procedures have been completed and accepted, pour the concrete after watering it and compact it with a vibrating rod. In particular, a flat vibrator should be used to vibrate the surface. After completion, the surface should be polished and anti-slip marks should be pressed out;

[0072] 8) Installation and connection of prefabricated foundation slabs. After the prefabricated foundation slabs are poured and reach 100% strength, they are hoisted and transported to the required location. After being hoisted in place, they are connected. The first concrete prefabricated slab and the second concrete prefabricated slab are close to each other, and then the third concrete prefabricated slab is assembled. They are assembled by tongue and groove fitting, and then connected and fixed by connecting bolts.

[0073] Verify the corresponding values

[0074] Safety factor is 2.0, cage deadweight (including drive system): 2000×2=4000kg; cage rated load: 2000×2=4000kg

[0075] Weight of base guardrail: 1300kg;

[0076] Guide rail frame weight: l45×93+160×80+180×80=40685kg;

[0077] The weight of accessories such as power cables, cable guides, fasteners, etc. is about 10% of the weight of the guide rail rack, which is 4068.5kg; the weight of non-standard wall racks is about 137×42=5754kg;

[0078] Counterweight: 0kg (none); therefore: P = (4000 + 4000 + 1300 + 40685 + 4068.5 + 5754) × 0.02 = 1371.07 kN

[0079] Conclusion: The concrete foundation can be set according to the minimum load of 1372kN to meet the requirements for the use of construction hoists.

[0080] The foundation bottom load is

[0081] 78.5+0.3*25=86kPa

[0082] Before installing the foundation slab, a shallow flat plate test is conducted on the foundation to test whether the characteristic value of the foundation bearing capacity can meet the design requirements (86kPa). If the strength cannot meet the requirements, the foundation must be treated. The foundation flatness is (height difference / foundation width <1 / 1000)

[0083] Calculate the shear force V at the tongues =PA=78.5*(0.7*2.3)=126.4KN

[0084] Shear bearing capacity of concrete at the tongue and groove

[0085] V=0.7β hs f t .b w .h0=0.7*1*1.57N / mm 2 *2150mm*115mm=271.7KN

[0086] V>V s , the shear strength meets the requirements.

[0087] Bending calculation

[0088] M=126.4kN*0.35m=44.24kN.m

[0089]

[0090] A s =44.24*10 6 / 0.9*360*115=1187.3mm 2

[0091] The bottom of C and D plates are equipped with a two-way HRB400 with a diameter of 12mm@200mm. The top of C and D plates are equipped with a two-way HRB400 with a diameter of 12mm@200mm.

[0092] To be conservative about the strength of the tongue and groove, the plates A, B and C, D are considered to be rigidly connected, and the rigid bending moment calculation of the bottom of the tongue and groove of A and B is required:

[0093] M=0.5*b 2* l*P=0.5*0.9 2 *1.3*78.5

[0094] The tongue and groove of plate B is subjected to a bending moment of 41.4 kN.m.

[0095] A 5mm thick Q235 steel plate is set at the tongue and groove, and its bending strength is calculated.

[0096] (1300*5-32*4*5)=A c =5860mm 2

[0097] 0.9f y *h0A C =0.9*235*120*5860=148.73kN.m>41.4kN.m

[0098] Safety.

[0099] Similarly, by verifying the rigid connection bending moment calculation between A and B, the bending resistance requirements can also be met.

[0100] In the present application, panel A refers to the first prefabricated panel, panel B refers to the second prefabricated panel, and panel C or D refers to the third prefabricated block.

[0101] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A revolving assembled prefabricated reinforced concrete double cage elevator foundation, characterized in that: include: A plurality of prefabricated concrete blocks, wherein the prefabricated concrete blocks are spliced ​​together to form an elevator foundation; A plurality of lifting rings are arranged at intervals on the prefabricated concrete blocks; A plurality of anti-collision guard frames are arranged around the prefabricated concrete blocks; A plurality of connection components are arranged at intervals between any two adjacent prefabricated concrete blocks.

2. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 1 is characterized in that: Four lifting rings are installed at intervals on each of the prefabricated concrete blocks.

3. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 1 is characterized in that: The prefabricated concrete block comprises: A first prefabricated block, wherein the first prefabricated block is one piece, and first tongue and groove are arranged on all four sides of the first prefabricated block; A second prefabricated block, wherein the second prefabricated blocks are two and are respectively arranged on both sides of the first prefabricated block, and a second tongue and groove are arranged on one side of the second prefabricated block facing the first prefabricated block and on two sides adjacent thereto; The third prefabricated block includes four third prefabricated blocks, and the third prefabricated blocks are arranged in groups of two on the upper and lower sides of the first prefabricated block, respectively; and a third tongue and groove is arranged on one side of the third prefabricated block facing the first prefabricated block and the second prefabricated block.

4. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 3 is characterized in that: The first tongue and groove, the second tongue and groove and the third tongue and groove have a width of 200 mm and a height of 145 mm.

5. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 4 is characterized in that: The first tongue, the second tongue and the third tongue are all provided with 5 mm thick steel lining plates inside.

6. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 1 is characterized in that: The connection component comprises: A bolt sleeve, embedded in the prefabricated concrete block; A connecting bolt is arranged in the bolt sleeve, and the diameter of the connecting bolt is 35 mm.

7. The revolving assembled prefabricated reinforced concrete double-cage elevator foundation according to claim 1 is characterized in that: The prefabricated concrete block is made of a HRB400 steel mesh layer with a diameter of 14 mm and C35 concrete.

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