Permanent-temporary overlapping conversion self-sensing structure and construction method thereof

Abstract

The invention relates to a permanent-temporary overlapping conversion self-sensing structure and a construction method thereof, belongs to the technical field of civil engineering, and solves the problems that in the prior art, in the permanent-temporary conversion process, the original structural strength is reduced and the construction period is long due to the construction mode that a prefabricated stand column is wrapped with a reinforcement cage. The device comprises a prefabricated stand column and a sleeve structure, the sleeve structure is arranged on the outer side of the prefabricated stand column in a sleeving mode, and a gap exists between an inner cavity of the sleeve structure and the prefabricated stand column; the sleeve structure comprises a first half sleeve and a second half sleeve, and the first half sleeve and the second half sleeve are connected in a mortise and tenon joint mode. The first half sleeve and the second half sleeve are arranged on the outer side of the prefabricated stand column to form the sleeve structure, the gap exists between the inner cavity of the sleeve structure and the prefabricated stand column, and grouting pouring is conducted between the sleeve structure and the prefabricated stand column, so that damage to the prefabricated stand column in reverse construction can be avoided, a large amount of concrete is prevented from being used for cast-in-place, and the construction cost is reduced. And the construction period is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and in particular to a permanent-temporary overlapping conversion self-sensing structure and a construction method thereof. Background Art

[0002] With the country's advocacy of low-carbon economy and the introduction of relevant policies, in the underground space construction projects in recent years, more and more engineering scholars have reached a consensus: in the early stage of underground construction, in order to achieve the support of underground water and soil pressure, the temporary structure is first supported and then abandoned to build the underground main structure, which not only causes a lot of economic losses, but also wastes time and energy. Therefore, after fully considering the existing technology, the underground space construction project has increasingly called for a permanent and temporary integrated support-main structure.

[0003] Considering the integration of permanent and temporary structures, the main components supporting the entire support structure, the prefabricated columns, need to be reversed at the beginning of the construction process of the underground project (after the construction of the ground-connected wall is completed). Under this condition, there are strict requirements for the size of the prefabricated columns, but the size is too small to meet the load-bearing requirements of the main structure in the later stage. Therefore, the existing project considers the method of outsourcing steel cages and pouring concrete to barely solve the above problems. However, this method still has the following shortcomings: In order to combine the composite concrete column and the prefabricated column into one, the process of outsourcing the steel cage needs to destroy the load-bearing prefabricated column, which creates a huge risk in the project and also reduces the structural strength of the original prefabricated column; Due to the uncertainty of cast-in-place structure construction, the quality of the outsourced composite column is difficult to unify, and the load-bearing process in the entire structure is also difficult to clarify; As the main load-bearing component of the entire structure, the prefabricated column needs to be solidified and cured after the superposition and outsourcing of cast-in-place concrete, and the construction of other components can only be carried out after the load-bearing requirements are met, which greatly slows down the progress of the permanent-temporary conversion process. Summary of the invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a permanent-temporary overlapping conversion self-sensing structure to solve the problem that the existing construction method of prefabricated columns wrapped with steel cages in the permanent-temporary conversion process reduces the original structural strength and prolongs the construction period.

[0005] On the one hand, the present invention provides a permanent overlapping conversion self-sensing structure, comprising a prefabricated column and a sleeve structure, wherein the sleeve structure is sleeved on the outside of the prefabricated column, and a gap is set between the inner cavity of the sleeve structure and the prefabricated column;

[0006] The sleeve structure comprises a first half sleeve and a second half sleeve, wherein the first half sleeve and the second half sleeve are connected with mortise and tenon joints;

[0007] The first half set includes a first cylinder and a plurality of first half steel frames, and the plurality of first half steel frames are arranged along the length direction of the first cylinder; the second half set includes a second cylinder and a plurality of second half steel frames, and the plurality of second half steel frames are arranged along the length direction of the second cylinder, and the second half steel frames are spliced with the first half steel frames to form a complete steel frame.

[0008] Further, a first limiting groove is provided along the length direction of the precast column, and both the first half steel frame and the second half steel frame are aligned with the first limiting groove.

[0009] Further, a first groove is provided on the first cylinder, and the first groove penetrates through both ends of the first cylinder;

[0010] Two side walls of the first groove are respectively a first side wall and a second side wall, and the first side wall and the second side wall are parallel.

[0011] Further, a second groove and a first boss are provided on the first side wall, and the first boss is located between the two second grooves;

[0012] A second boss and a third groove are provided on the second side wall, and the second boss is located between the two third grooves.

[0013] Further, a fourth groove is provided on the second cylinder, and the fourth groove penetrates through both ends of the second cylinder;

[0014] Two side walls of the fourth groove are respectively a third side wall and a fourth side wall, and the third side wall and the fourth side wall are parallel.

[0015] Further, a fifth groove and a third boss are provided on the third side wall, and the third boss is located between the two fifth grooves;

[0016] A fourth boss and a sixth groove are provided on the fourth side wall, and the fourth boss is located between the two sixth grooves.

[0017] Further, the first boss is connected to the sixth groove, the second boss is connected to the second groove, the third boss is connected to the third groove, and the fourth boss is connected to the fifth groove.

[0018] Further, a first locking assembly is further included, and the first locking assembly is used to connect the first half set and the second half set.

[0019] Furthermore, the first half steel frame includes a first C-shaped frame, a first support rod and a second C-shaped frame, one end of the first support rod is connected to the first C-shaped frame, and the other end extends into the first groove and is connected to the second C-shaped frame, and the second C-shaped frame is located in the first limiting groove.

[0020] On the other hand, the present invention provides a construction method for the above-mentioned permanent overlapping conversion self-sensing structure.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0022] (1) The present invention forms a sleeve structure by arranging a first half sleeve and a second half sleeve on the outer side of the prefabricated column. There is a gap between the inner cavity of the sleeve structure and the prefabricated column. Grouting is poured between the sleeve structure and the prefabricated column. This can avoid damage to the prefabricated column constructed in reverse, greatly reducing engineering risks, and avoid using a large amount of cast-in-place concrete, avoiding construction errors caused by factors such as construction quality, and shortening the construction period.

[0023] (2) The present invention pre-buries a first half steel frame in the first column, and pre-buries a second half steel frame in the second column. When the first half set and the second half set are spliced ​​together, the first boss is inserted into the sixth groove, the second boss is inserted into the second groove, the third boss is inserted into the third groove, and the fourth boss is inserted into the fifth groove, so that the first half set and the second half set are spliced ​​together in the form of mortise and tenon joints, and the first half steel frame and the second half steel frame are butted against the first limiting groove of the prefabricated column. After pouring concrete, the entire structure is tightly connected and combined into one, and jointly bears the load, thereby improving the structural strength.

[0024] (3) The present invention has a built-in circuit in the first column and the second column, and the locking assembly includes a locking column, an elastic sleeve and a positioning ring. The elastic sleeve is arranged on the outside of the locking column, and the positioning ring is arranged on the outside of the elastic sleeve. The built-in circuit corresponds to the locking column. When the elastic sleeve is not deformed, the wire is connected to the elastic sleeve, the circuit is not conductive, and the indicator light is not on. When the elastic sleeve is deformed, the end of the wire is connected to the locking column, the circuit is connected, and the indicator light is on. During the permanent overlapping process of the column, by using the first locking assembly, the second locking assembly and the built-in circuit, the entire permanent overlapping conversion self-sensing structure can be self-sensed during the construction and operation stages, and unpredictable risks can be warned in advance.

[0025] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference signs denote the same components.

[0027] Figure 1 Schematic diagram of a support structure containing a permanent-temporary superimposed conversion self-sensing structure for a specific embodiment;

[0028] Figure 2 Schematic diagram of the structure of the permanent-temporary superimposed conversion self-sensing structure for a specific embodiment;

[0029] Figure 3 Top view schematic diagram of the structure of the permanent-temporary superimposed conversion self-sensing structure for a specific embodiment;

[0030] Figure 4 Schematic diagram of the structure of a sleeve structure containing a locking component for a specific embodiment;

[0031] Figure 5 Schematic diagram of the structure of the first half sleeve without the first half steel frame for a specific embodiment;

[0032] Figure 6 Schematic diagram of the structure of the first half steel frame for a specific embodiment;

[0033] Figure 7 Schematic diagram of the structure of the second half sleeve without the second half steel frame for a specific embodiment;

[0034] Figure 8 Schematic diagram of the structure of the second half steel frame for a specific embodiment;

[0035] Figure 9 Schematic diagram of the structure of the first locking component for a specific embodiment;

[0036] Figure 10 Schematic diagram of the structure of the second locking component for a specific embodiment;

[0037] Figure 11 Schematic diagram of the state before the half sleeve and the locking component come into contact for a specific embodiment;

[0038] Figure 12 Schematic diagram of the state when the half sleeve and the locking component come into contact for a specific embodiment;

[0039] Figure 13 Schematic diagram of the state after the first half sleeve and the second half sleeve are spliced for a specific embodiment;

[0040] Figure 14 Schematic diagram of the mutual dislocation of the superimposed structure under the action of shear force for a specific embodiment.

[0041] Reference signs:

[0042] 1 - Prefabricated column; 11 - First limiting groove;

[0043] 2 - Sleeve structure; 21 - First half sleeve; 211 - First cylinder; 2111 - First groove; 2112 - First side wall; 2113 - Second side wall; 2114 - Second groove; 2115 - First boss; 2116 - Second boss; 2117 - Third groove; 2118 - First through hole; 2119 - Second through hole; 2120 - First limiting hole; 212 - First half steel frame; 2121 - First U-shaped frame; 2122 - First support rod; 2123 - Second U-shaped frame; 22 - Second half sleeve; 221 - Second cylinder; 2211 - Fourth groove; 2212 - Third side wall; 2213 - Fourth side wall; 2214 - Fifth groove; 2215 - Third boss; 2216 - Fourth boss; 2217 - Sixth groove; 2218 - Third through hole; 2219 - Fourth through hole; 2220 - Second limiting hole; 222 - Second half steel frame; 2221 - Third U-shaped frame; 2222 - Second support rod; 2223 - Fourth U-shaped frame;

[0044] 3 - First locking assembly; 31 - First locking column; 32 - First elastic sleeve; 33 - First positioning ring; 34 - First inclined surface; 4 - Second locking assembly; 41 - Second locking column; 42 - Second elastic sleeve; 43 - Second positioning ring; 44 - Second inclined surface;

[0045] 100 - Diaphragm wall; 200 - Longitudinal beam; 300 - Cross support; 400 - Floor slab. Specific embodiments

[0046] The following combines the accompanying drawings to specifically describe the preferred embodiments of the present invention. Among them, the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0047] Embodiment 1

[0048] A specific embodiment of the present invention, in combination with Figure 1 , Figure 2 and Figure 3 as shown, discloses a permanent-temporary composite conversion self-sensing structure, including a prefabricated column 1 and a sleeve structure 2. The sleeve structure 2 is sleeved outside the prefabricated column 1. The sleeve structure 2 includes a first half sleeve 21 and a second half sleeve 22. After the first half sleeve 21 and the second half sleeve 22 are connected by mortise and tenon joints, the prefabricated column 1 is surrounded in the middle.

[0049] In this embodiment, after the first half set 21 and the second half set 22 are spliced, a complete solid sleeve structure 2 is formed, with the precast column 1 surrounded in the middle. Compared with wrapping a steel reinforcement cage outside the precast column 1, directly using the first half set 21 and the second half set 22 can save a certain amount of time in the precast stage and shorten the construction period.

[0050] To connect with the sleeve structure 2, as Figure 2 shown, a first limiting groove 11 is provided on the outer side of the precast column 1, and the first limiting groove 11 is arranged around the outer circumference of the precast column 1. The first limiting groove 11 is uniformly arranged along the length direction of the precast column 1. The first limiting groove 11 is formed during the prefabrication process of the precast column 1 and generally is not made by post-processing to improve the operation efficiency.

[0051] Preferably, the cross-section of the precast column 1 is rectangular. It should be noted that the cross-section refers to the section formed perpendicular to the length direction of the precast column 1. Since the cross-section of the precast column 1 is rectangular, the precast column 1 has four side surfaces, and the first limiting groove 11 is formed around the four side surfaces of the precast column 1.

[0052] Combined with Figure 3 and Figure 4 shown, the first half set 21 includes a first column body 211 and a plurality of first half steel frames 212. The plurality of first half steel frames 212 are arranged along the length direction of the first column body 211, and the first half steel frames 212 correspond to the first limiting groove 11. A part of the first half steel frame 212 is arranged inside the first column body 211, and the other part is located outside the first column body 211. The part of the first half steel frame 212 located outside the first column body 211 is connected to the first limiting groove 11. When concrete is poured, the first column body 211, the first half steel frame 212 and the precast column 1 are connected as a whole, which can improve the structural strength of the components after connection compared with only being connected by concrete.

[0053] As Figure 5 shown, a first groove 2111 is provided on the first column body 211. The first groove 2111 penetrates through both ends of the first column body 211, and the first groove 2111 is located in the middle area of the side surface of the first column body 211.

[0054] As Figure 5 shown, the two side walls of the first groove 2111 are respectively a first side wall 2112 and a second side wall 2113, and the first side wall 2112 and the second side wall 2113 are parallel. A second groove 2114 and a first boss 2115 are provided on the first side wall 2112, and the first boss 2115 is located between the two second grooves 2114. A second boss 2116 and a third groove 2117 are provided on the second side wall 2113, and the second boss 2116 is located between the two third grooves 2117.

[0055] As shown in Figure 5 the figure, the second groove 2114 communicates with the first groove 2111 and the outside of the first side wall 2112, that is, the second groove 2114 penetrates through the two side surfaces in the width direction of the first side wall 2112. The width of the first boss 2115 is equal to the width of the first side wall 2112, and the two side surfaces in the width direction of the first boss 2115 are flush with the two side surfaces in the width direction of the first side wall 2112.

[0056] Similarly, as shown in Figure 5 the figure, the width of the second boss 2116 is equal to the width of the second side wall 2113, and the two side surfaces in the width direction of the second boss 2116 are flush with the two side walls in the width direction of the second side wall 2113; the third groove 2117 communicates with the first groove 2111 and the outside of the second side wall 2113, that is, the third groove 2117 penetrates through the two side surfaces in the width direction of the second side wall 2113.

[0057] Preferably, as shown in Figure 5 the figure, the first boss 2115 is opposite to the third groove 2117, and the second groove 2114 is opposite to the second boss 2116. Both the second groove 2114 and the third groove 2117 are rectangular grooves, and both the first boss 2115 and the second boss 2116 are rectangular bosses.

[0058] Furthermore, as shown in Figure 5 the figure, two second grooves 2114 and one first boss 2115 are provided along the length direction of the first side wall 2112, and the first boss 2115 is located in the middle of the two second grooves 2114. Two second bosses 2116 and one third groove 2117 are provided along the length direction of the second side wall 2113, and the third groove 2117 is located between the two second bosses 2116.

[0059] As a preferred embodiment, a plurality of second grooves 2114 and at least two first bosses 2115 are provided along the length direction of the first side wall 2112, and the number of the first bosses 2115 is one less than that of the second grooves 2114. The first bosses 2115 and the second grooves 2114 are arranged at intervals, and the first bosses 2115 are arranged at the middle positions between the two second grooves 2114. A plurality of second bosses 2116 and at least two third grooves 2117 are provided along the length direction of the second side wall 2113, and the number of the third grooves 2117 is one less than that of the second bosses 2116. The third grooves 2117 and the second bosses 2116 are arranged at intervals, and the third grooves 2117 are arranged at the middle positions between the two second bosses 2116.

[0060] As shown in Figure 6As shown in the figure, the first half steel frame 212 includes a first U-shaped frame 2121, a first support rod 2122, and a second U-shaped frame 2123. One end of the first support rod 2122 is connected to the first U-shaped frame 2121, and the other end extends into the first groove 2111 and is connected to the second U-shaped frame 2123. The second U-shaped frame 2123 is located in the first limiting groove 11. There are multiple first support rods 2122, and the multiple first support rods 2122 are arranged around the first U-shaped frame 2121.

[0061] In this embodiment, by clamping the second U-shaped frame 2123 with the first limiting groove 11, the rapid positioning of the first half set 21 and the precast column 1 can be achieved. Moreover, multiple first support rods 2122 are evenly distributed between the first U-shaped frame 2121 and the second U-shaped frame 2123, which can allow the concrete to pass through smoothly while ensuring the structural strength.

[0062] Combined with Figure 3 and Figure 4 As shown in the figure, the second half set 22 includes a second column body 221 and a second half steel frame 222. There are multiple second half steel frames 222, and the multiple second half steel frames 222 are arranged along the length direction of the second column body 221. The second half steel frames 222 correspond to the first limiting grooves 11. A part of the second half steel frame 222 is arranged inside the second column body 221, and the other part is located outside the second column body 221. The part of the second half steel frame 222 located outside the second column body 221 is connected to the first limiting groove 11. The second half steel frame 222 and the first half steel frame 212 are spliced to form a complete steel frame, which is equivalent to the second half steel frame 222 and the first half steel frame 212 clamping the precast column 1, and can improve the structural stability.

[0063] As Figure 7 shown in the figure, a fourth groove 2211 is provided on the second column body 221. The fourth groove 2211 penetrates through both ends of the second column body 221, and the fourth groove 2211 is located in the middle area of the side surface of the second column body 221.

[0064] As Figure 7 shown in the figure, the two side walls of the fourth groove 2211 are respectively a third side wall 2212 and a fourth side wall 2213, and the third side wall 2212 and the fourth side wall 2213 are parallel. A fifth groove 2214 and a third boss 2215 are provided on the third side wall 2212, and the third boss 2215 is located between the two fifth grooves 2214. A fourth boss 2216 and a sixth groove 2217 are provided on the fourth side wall 2213, and the fourth boss 2216 is located between the two sixth grooves 2217.

[0065] In this embodiment, combined with Figure 2 , Figure 4 , Figure 5 and Figure 7As shown, after the first half set 21 and the second half set 22 are spliced, the first boss 2115 is inserted into the sixth groove 2217, the second boss 2116 is inserted into the second groove 2114, the third boss 2215 is inserted into the third groove 2117, and the fourth boss 2216 is inserted into the fifth groove 2214, so that the first half set 21 and the second half set 22 are spliced together in a mortise and tenon form, and the precast column 1 is enclosed therein.

[0066] As Figure 7 shown, the fifth groove 2214 communicates with the fourth groove 2211 and the outside of the third side wall 2212, that is, the fifth groove 2214 penetrates through the two sides in the width direction of the third side wall 2212. The width of the third boss 2215 is equal to the width of the third side wall 2212, and the two sides in the width direction of the third boss 2215 are flush with the two sides in the width direction of the third side wall 2212.

[0067] Similarly, as Figure 7 shown, the width of the fourth boss 2216 is equal to the width of the fourth side wall 2213, and the two sides in the width direction of the fourth boss 2216 are flush with the two side walls in the width direction of the fourth side wall 2213; the sixth groove 2217 communicates with the fourth groove 2211 and the outside of the fourth side wall 2213, that is, the sixth groove 2217 penetrates through the two sides in the width direction of the fourth side wall 2213.

[0068] Preferably, as Figure 7 shown, the third boss 2215 is opposite to the sixth groove 2217, and the fifth groove 2214 is opposite to the fourth boss 2216. Both the fifth groove 2214 and the sixth groove 2217 are rectangular grooves, and both the third boss 2215 and the fourth boss 2216 are rectangular platforms.

[0069] Furthermore, as Figure 7 shown, two fifth grooves 2214 and one third boss 2215 are provided along the length direction of the third side wall 2212, and the third boss 2215 is located in the middle of the two fifth grooves 2214. Two fourth bosses 2216 and one sixth groove 2217 are provided along the length direction of the fourth side wall 2213, and the sixth groove 2217 is located between the two fourth bosses 2216.

[0070] As a preferred embodiment, a plurality of fifth grooves 2214 and at least two third bosses 2215 are provided along the length direction of the third side wall 2212. The number of the third bosses 2215 is one less than that of the fifth grooves 2214. The third bosses 2215 and the fifth grooves 2214 are arranged at intervals, and the third bosses 2215 are arranged at the middle positions between two fifth grooves 2214. A plurality of fourth bosses 2216 and at least two sixth grooves 2217 are provided along the length direction of the fourth side wall 2213. The number of the sixth grooves 2217 is one less than that of the fourth bosses 2216. The sixth grooves 2217 and the fourth bosses 2216 are arranged at intervals, and the sixth grooves 2217 are arranged at the middle positions between two fourth bosses 2216.

[0071] As Figure 8 shown, the second half steel frame 222 includes a third U-shaped frame 2221, a second support rod 2222 and a fourth U-shaped frame 2223. One end of the second support rod 2222 is connected to the third U-shaped frame 2221, and the other end extends into the fourth groove 2211 and is connected to the fourth U-shaped frame 2223. The fourth U-shaped frame 2223 is located in the first limiting groove 11. A plurality of second support rods 2222 are provided, and the plurality of second support rods 2222 are arranged around the second U-shaped frame 2221.

[0072] In order to stably connect the first half set 21 and the second half set 22, as Figure 4 shown, the permanent-temporary superimposed conversion self-sensing structure further includes a first locking assembly 3 and a second locking assembly 4. Before the first half set 21 and the second half set 22 are spliced, the first locking assembly 3 is connected to the first half set 21, and the second locking assembly 4 is connected to the second half set 22. After the first half set 21 and the second half set 22 are spliced, the first locking assembly 3 connects the first half set 21 and the second half set 22, and the second locking assembly 4 connects the first half set 21 and the second half set 22.

[0073] Further, in combination with Figure 5 and Figure 9 shown, the first locking assembly 3 includes a first locking column 31, a first elastic sleeve 32 and a first positioning ring 33. The first elastic sleeve 32 is sleeved on the outer side of the first locking column 31, and the first positioning ring 33 is arranged on the outer side of the first elastic sleeve 32. More specifically, the first elastic sleeve 32 is sleeved at the middle position of the first locking column 31, and the first positioning ring 33 is arranged on the outer side of the first elastic sleeve 32. A first through hole 2118 and a second through hole 2119 are respectively provided on the first boss 2115 and the second boss 2116. The first through hole 2118 penetrates along the length direction of the first boss 2115, and the second through hole 2119 penetrates along the length direction of the second boss 2116. The first locking column 31 is placed in the first through hole 2118 and the second through hole 2119, and both ends of the first locking column 31 are located outside the first through hole 2118 and outside the second through hole 2119.

[0074] In order to limit the first locking assembly 3, second limiting grooves are reserved in the middle parts of the first through hole 2118 and the second through hole 2119, and the first positioning ring 33 cooperates with the second limiting groove to realize the limitation of the first locking assembly 3.

[0075] Understandably, in combination with Figure 7 and Figure 10 As shown, the second locking assembly 4 includes a second locking column 41, a second elastic sleeve 42 and a second positioning ring 43. The second elastic sleeve 42 is sleeved outside the second locking column 41, and the second positioning ring 43 is arranged outside the second elastic sleeve 42. More specifically, the second elastic sleeve 42 is sleeved at the middle position of the second locking column 41, and the second positioning ring 43 is arranged outside the second elastic sleeve 42. A third through hole 2218 and a fourth through hole 2219 are respectively arranged on the third boss 2215 and the fourth boss 2216. The third through hole 2218 penetrates along the length direction of the third boss 2215, and the fourth through hole 2219 penetrates along the length direction of the fourth boss 2216. The second locking column 41 is placed in the third through hole 2218 and the fourth through hole 2219, and both ends of the second locking column 41 are located outside the third through hole 2218 and outside the fourth through hole 2219.

[0076] In order to limit the second locking assembly 4, third limiting grooves are reserved in the middle parts of the third through hole 2218 and the fourth through hole 2219, and the second positioning ring 43 cooperates with the third limiting groove to realize the limitation of the second locking assembly 4.

[0077] Preferably, both the first locking column 31 and the second locking column 41 are made of metal conductive materials, and the first elastic sleeve 32, the first positioning ring 33, the second elastic sleeve 42 and the second positioning ring 43 are all made of compressible elastic materials.

[0078] Considering that both ends of the first locking column 31 are connected to the second half sleeve 22 and both ends of the second locking column 41 are connected to the first half sleeve 21 during the splicing process of the first half sleeve 21 and the second half sleeve 22, for the convenience of splicing, as Figure 9 and Figure 10 shown, both ends of the first locking column 31 are first inclined surfaces 34, and both ends of the second locking column 41 are second inclined surfaces 44.

[0079] Since the two ends of the first locking column 31 extend beyond the two end surfaces of the first boss 2115 and the two end surfaces of the second boss 2116, and the two ends of the second locking column 41 extend beyond the two end surfaces of the third boss 2215 and the fourth boss 2216, as the first half sleeve 21 and the second half sleeve 22 are spliced ​​together, the first inclined surface 34 and the second inclined surface 44 gradually approach and contact each other. When the first inclined surface 34 and the second inclined surface 44 contact each other, the first half sleeve 21 and the second half sleeve 22 are spliced ​​into place. When the first half sleeve 21 and the second half sleeve 22 are further squeezed, the splicing status can be judged in combination with the brightness of the built-in circuit indicator light, which is more intuitive and efficient.

[0080] Furthermore, if Figure 5 and Figure 7 As shown, both ends of the second groove 2114 and both ends of the third groove 2117 are provided with first limiting holes 2120, and the first limiting holes 2120 cooperate with both ends of the second locking column 41. Both ends of the fifth groove 2214 and the sixth groove 2217 are provided with second limiting holes 2220, and the second limiting holes 2220 cooperate with both ends of the first locking column 31.

[0081] In this embodiment, a sleeve structure 2 is formed by arranging a first half sleeve 21 and a second half sleeve 22 on the outer side of the prefabricated column 1. There is a gap between the inner cavity of the sleeve structure 2 and the prefabricated column 1. Grouting is performed between the sleeve structure 2 and the prefabricated column 1. This can avoid damage to the prefabricated column 1 constructed in reverse, greatly reducing engineering risks, avoiding the use of a large amount of cast-in-place concrete, avoiding construction errors caused by factors such as construction quality, and shortening the construction period.

[0082] In this embodiment, a first half steel frame 212 is embedded in the first column 211, and a second half steel frame 222 is embedded in the second column 221. When the first half sleeve 21 and the second half sleeve 22 are spliced, the first boss 2115 is inserted into the sixth groove 2217, the second boss 2116 is inserted into the second groove 2114, the third boss 2215 is inserted into the third groove 2117, and the fourth boss 2216 is inserted into the fifth groove 2214, so that the first half sleeve 21 and the second half sleeve 22 are spliced ​​together in the form of mortise and tenon joints, and the first half steel frame 212 and the second half steel frame 222 are connected to the first limiting groove 11 of the prefabricated column 1. After pouring concrete, the entire structure is tightly connected and combined into one to carry the load together.

[0083] It should be noted that circuits are built into the first cylinder 211 and the second cylinder 221. The built-in circuits include indicator lights, power supplies, and wires. The indicator lights are connected to the wires, and both ends of the wires correspond to the locking posts, that is, both ends of the wires face the locking posts. When the elastic sleeve is not deformed, the wires are connected to the elastic sleeve, the circuit is not conducting, and the indicator lights are not on. When the elastic sleeve is deformed, the ends of the wires are connected to the locking posts, the circuit is connected, and the indicator lights are on. The installation and use of the first locking assembly 3 and the second locking assembly 4 are the same. The following takes the first locking assembly 3 as an example for elaboration:

[0084] Combined with Figure 11 、 Figure 12 and Figure 13 As shown, when the first locking post 31 has not yet contacted the second half sleeve 22, the compressible elastic material (i.e., the first elastic sleeve 32) wrapped around the first locking post 31 is in an uncompressed state, and the metal conductive material (i.e., the first locking post 31) is wrapped. The built-in circuit is not connected, making the indicator lights (protruding from the side walls of the first cylinder 211 and the second cylinder 221) in an unlit state; as the relative distance between the first half sleeve 21 and the second half sleeve 22 decreases, both ends of the first locking post 31 are under pressure, causing the compressible elastic material (i.e., the first elastic sleeve 32) wrapped around the first locking post 31 to be in a compressed state. The built-in circuit successfully contacts the conductive material of the first half sleeve 21, making the circuit connected, and the indicator lights light up; as the alignment splicing process is completed, the first locking post 31 reaches the position of the second limiting hole 2220, and the pressure on the compressible elastic material (i.e., the first elastic sleeve 32) is released, returning to the uncompressed state, causing the indicator lights to go out. During the permanent-temporary superposition process of the columns, by using the first locking assembly 3, the second locking assembly 4, and the built-in circuit, the entire permanent-temporary superposition conversion self-sensing structure can self-sense during the construction and operation stages and give early warnings of unpredictable risks.

[0085] Embodiment 2

[0086] Another specific embodiment of the present invention discloses a construction method for the permanent-temporary superposition conversion self-sensing structure of Embodiment 1, including the following steps:

[0087] Step 1: Preparation before the permanent-temporary superposition of the columns.

[0088] During the construction of underground projects, after completing the survey and preparation work before excavation, first construct the diaphragm wall 100 in a forward direction, and then construct the precast columns 1 in a reverse direction. After that, construct the longitudinal beams 200 and the cross braces 300. After completing the pouring of the floor slab 400, carry out the permanent-temporary superposition process of the columns.

[0089] Step 2: Installation of the first locking assembly 3 and the second locking assembly 4.

[0090] Install the first locking assembly 3 into the third through-hole 2218 and the fourth through-hole 2219, and install the second locking assembly 4 into the first through-hole 2118 and the second through-hole 2119. It should be noted that the short sides of the first locking post 31 and the second locking post 41 need to face the position of the other half sleeve when being installed. During the installation process, the first positioning ring 33 and the second positioning ring 43 will contract to facilitate the entry of the first locking assembly 3 and the second locking assembly 4 into the reserved through-hole. When reaching the specified position, the first positioning ring 33 and the second positioning ring 43 will latch onto the reserved groove in the through-hole, at which point the installation of the first locking assembly 3 and the second locking assembly 4 is completed. Further, the lighting condition of the indicator light can be observed by pressing both ends of the first locking post 31 and the second locking post 41 simultaneously to ensure the integrity of the entire built-in circuit.

[0091] Step 3: Hoisting and splicing.

[0092] Hoist the assembled first half sleeve 21 and the second half sleeve 22 near the precast column 1.

[0093] Use the support device to slightly expand the horizontal support 300 and the longitudinal beam 200 that need to be borne by the sleeve structure 2 to increase the longitudinal distance for facilitating the splicing of the sleeve structure 2.

[0094] Further, taking the one-to-one correspondence between the reserved first limit groove 11 in the precast column 1, the first half steel frame 212 embedded in the first column body 211, and the second half steel frame 222 embedded in the second column body 221 as the splicing target, first splice one half sleeve (such as the first half sleeve 21) into the specified position. Then splice the other half sleeve (such as the second half sleeve 22) in a mortise and tenon embedding manner facing each other. The splicing process is judged according to the brightness of the indicator light.

[0095] Step 4: Pouring.

[0096] Pour concrete into the pouring area between the spliced sleeve structure 2 and the precast column 1, so that the entire sleeve structure 2 and the precast column 1 are laminated into a whole, achieving the purpose of combining the two into one to jointly bear the force. Finally, remove the support device, and the construction of the permanent and temporary lamination process of the precast column 1 and the sleeve structure 2 is completed here. The construction is carried out sequentially according to the span of the support structure. When the laying and concrete pouring of the support structure of the lowest floor slab are completed, the permanent and temporary lamination construction of the upper layer is carried out.

[0097] It should be noted that as Figure 14 shown, when the underground structure is subjected to unpredictable external forces during the construction process, the sleeve laminated columns are displaced relative to each other under the shear force. At this time, both ends of the locking assembly will be subjected to the pressure from the interface, causing the compressible elastic material wrapped around the locking assembly to be in a compressed state, the built-in circuit to be reconnected, and the indicator light to light up again, giving an emergency warning for unpredictable engineering risks.

[0098] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A permanent-temporary composite conversion self-sensing structure, characterized in that It includes a precast column (1) and a sleeve structure (2). The sleeve structure (2) is sleeved outside the precast column (1), and a gap is provided between the inner cavity of the sleeve structure (2) and the precast column (1). The sleeve structure (2) includes a first half sleeve (21) and a second half sleeve (22), and the first half sleeve (21) and the second half sleeve (22) are connected by mortise and tenon joints.

2. The permanent-temporary laminated conversion self-sensing structure according to claim 1, wherein The first half sleeve (21) includes a first column body (211) and a plurality of first half steel frames (212), and the plurality of first half steel frames (212) are arranged along the length direction of the first column body (211).

3. The permanent-temporary composite conversion self-sensing structure according to claim 2, wherein The second half sleeve (22) includes a second column body (221) and a plurality of second half steel frames (222), and the plurality of second half steel frames (222) are arranged along the length direction of the second column body (221).

4. The permanent-temporary composite conversion self-sensing structure according to claim 3, wherein The second half steel frame (222) and the first half steel frame (212) are spliced to form a complete steel frame structure.

5. The permanent-temporary laminated conversion self-sensing structure according to claim 4, characterized in that, A first limiting groove (11) is provided along the length direction of the precast column (1), and both the first half steel frame (212) and the second half steel frame (222) are opposite to the first limiting groove (11).

6. The permanent-temporary laminated conversion self-sensing structure according to claim 5, wherein A first groove (2111) is provided on the first column body (211), and the first groove (2111) penetrates through both ends of the first column body (211).

7. The permanent-temporary composite conversion self-sensing structure according to claim 3, wherein A fourth groove (2211) is provided on the second column body (221), and the fourth groove (2211) penetrates through both ends of the second column body (221).

8. The permanent-temporary laminated conversion self-sensing structure according to any one of claims 1-7, characterized in that, It further includes a first locking assembly (3), and the first locking assembly (3) is used to connect the first half sleeve (21) and the second half sleeve (22).

9. The permanent-temporary laminated conversion self-sensing structure according to claim 6, wherein The first half steel frame (212) includes a first U-shaped frame (2121) and a first support rod (2122). One end of the first support rod (2122) is connected to the first U-shaped frame (2121), and the other end extends into the first groove (2111).

10. A construction method, characterized in that, For constructing the permanent-temporary superimposed conversion self-sensing structure according to any one of claims 1-9.

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