Wall and foundation connecting structure suitable for fabricated passive house and construction method

Abstract

The invention provides a wall and foundation connecting structure suitable for a fabricated passive house and a construction method, and belongs to the technical field of building construction, the wall and foundation connecting structure comprises a prefabricated foundation and a prefabricated wall body, and the prefabricated foundation is prefabricated with a mounting groove, a first connecting groove and a second connecting groove; the first connecting groove is prefabricated in the mounting groove; the second connecting groove is prefabricated in the bottom surface of the prefabricated foundation; the prefabricated wall body comprises a steel sleeve and a prefabricated wall main body; the outer side of the lower end of the steel sleeve is further provided with a self-clamping assembly which is automatically clamped into the first connecting groove. And a wall body embedded part is embedded in the prefabricated wall main body. When the prefabricated wall body is connected with the prefabricated foundation, the lower end of the wall body embedded part downwards penetrates through the prefabricated foundation along with the prefabricated wall body and is connected with the self-connecting assembly arranged in the second connecting groove. And the prefabricated wall body is clamped on the prefabricated foundation through the self-clamping assembly. The connection reliability of the wall and the foundation is improved through double connection, site construction operation is convenient, the construction period is shortened, energy waste is reduced, and the construction quality is improved.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a wall and foundation connection structure and construction method suitable for prefabricated passive houses. Background Technology

[0002] With the continuous deepening of the global low-carbon transformation and dual-carbon goals, building energy conservation has been given an important mission to support the national green development strategy. Prefabricated passive houses integrate passive ultra-low energy consumption technology with the industrialization concept of prefabricated buildings. They can significantly reduce energy consumption throughout the entire life cycle of buildings and meet the dual needs of modern buildings for high-quality living, thus becoming a key path to promote carbon emission reduction in the building sector.

[0003] In prefabricated passive houses, walls and foundations are crucial components of the building structure, and the connection structure between them is key to the widespread application of prefabricated passive houses. Currently, the connection between walls and foundations in prefabricated passive houses faces the following problems: (1) The connection between the wall and the foundation is mostly cast-in-place structure, which involves a lot of wet work on site. There are few technologies involved in the connection structure between the prefabricated wall and the foundation, making the construction operation more complicated. This results in a long on-site construction period, high labor intensity, and a large amount of energy waste. There are also problems with uncontrollable quality.

[0004] (2) The existing prefabricated wall and foundation connection structure does not have a multi-stage energy dissipation configuration and has poor seismic performance.

[0005] (3) In prefabricated passive houses, the thermal insulation performance of the walls and the thermal insulation performance at the connection between the walls and the foundation are poor.

[0006] Therefore, it is necessary to develop a wall-foundation connection structure with good seismic performance, convenient construction and operation, good thermal insulation effect, and controllable construction quality to meet the requirements of the national green development strategy. Summary of the Invention

[0007] This invention provides a wall-foundation connection structure suitable for prefabricated passive houses, aiming to solve the problems of complex construction operations and uncontrollable quality in wall-foundation connections.

[0008] Firstly, to achieve the above objectives, the technical solution adopted by the present invention is: to provide a wall-foundation connection structure suitable for prefabricated passive houses, comprising: A precast foundation, precast with an installation groove, a first connecting groove, and a second connecting groove; the first connecting groove is precast within the installation groove; the second connecting groove is precast on the bottom surface of the precast foundation; and The precast wall includes a steel sleeve and a precast wall body precast within the steel sleeve; the lower end of the steel sleeve is adapted to the mounting groove, and a self-clamping component that self-clamps into the first connecting groove is also provided on the outer side of the lower end of the steel sleeve; a wall pre-embedded part is pre-embedded in the precast wall body, and the wall pre-embedded part passes downward through the steel sleeve. When the precast wall is connected to the precast foundation, the lower end of the wall embedded part passes through the first connecting hole on the precast foundation along with the precast wall and connects with the self-connecting component built into the second connecting groove; the precast wall is snapped onto the precast foundation by the self-clamping component.

[0009] In conjunction with the first aspect, in one feasible embodiment, the self-connecting assembly includes a connecting sleeve, a first baffle, a second baffle, a cover plate, a self-locking spring, and a split slider; the connecting sleeve is inverted within the second connecting groove, the cover plate closes the lower opening of the connecting sleeve, and the top plate of the connecting sleeve is provided with a second communicating hole coaxial with the first communicating hole; a guide gap is formed between the first baffle and the second baffle, and the slider is slidably disposed within the guide gap in a horizontal direction; the self-locking spring is horizontally connected between the connecting sleeve and the slider; the first baffle and the second baffle are respectively provided with a first through hole and a second through hole coaxial with the second communicating hole; when the self-locking spring naturally extends, the slider partially extends into the through channel formed by the first through hole and the second through hole; The lower end of the wall embedded part is provided with a locking block. The locking block passes through the first connecting hole, the second connecting hole, and the first through hole and pushes the slider to compress the self-locking spring. It then passes through the two sliders and extends into the second through hole. The slider is reset and extended under the elastic force of the self-locking spring, and abuts against the upper surface of the locking block to limit its movement.

[0010] In conjunction with the first aspect, in one feasible embodiment, the self-connecting assembly further includes a sliding plate and an energy-dissipating spring, the sliding plate being located on the first baffle and slidingly engaging with the inner wall of the connecting sleeve; the energy-dissipating spring being compressed between the top plate of the connecting sleeve and the sliding plate; the sliding plate being provided with a third through hole coaxial with the second connecting hole; the lower end of the wall embedded part passing through the energy-dissipating spring and the third through hole.

[0011] In conjunction with the first aspect, in one feasible embodiment, the self-connecting assembly further includes a third baffle disposed between the first baffle and the second baffle, the third baffle having a fourth through hole coaxial with the second through hole, the fourth through hole being larger in size than the first through hole to form the guide gap; the self-locking spring is connected between the third baffle and the slider.

[0012] In conjunction with the first aspect, in one feasible embodiment, the self-clamping assembly includes a fixed base fixed to the outside of the steel sleeve, a bent plate hinged to the fixed base, and a clamping spring, the bent plate having a connecting plate and a clamping plate; the clamping spring connecting the clamping plate and the steel sleeve; the connecting plate being pressed against the steel sleeve by the spring force of the clamping spring, and the clamping plate entering the first connecting groove; The precast wall is installed downwards in the mounting groove. The snap-fit ​​plate is pressed by the anchoring part formed by the first connecting groove, compressing the snap-fit ​​spring and retracting upwards. After the snap-fit ​​plate passes the anchoring part, it enters the first connecting groove under the elastic reset action of the snap-fit ​​spring. The connecting plate abuts against the steel sleeve, realizing the automatic snap-fit ​​between the precast wall and the precast foundation.

[0013] In conjunction with the first aspect, in one feasible manner, the inner wall of the steel sleeve is provided with an anchor plate that is reinforcedly connected to the precast wall body.

[0014] In conjunction with the first aspect, in one feasible manner, the installation groove is provided with an expansion groove whose width is greater than that of the precast wall; a first steel plate energy-consuming component is symmetrically arranged in the expansion groove and on both sides of the precast wall; a second steel plate energy-consuming component is symmetrically arranged in the expansion groove and on the inner wall opposite to the precast foundation; the expansion groove is also filled with thermal insulation material.

[0015] In conjunction with the first aspect, in one feasible manner, an energy-dissipating tie rod is also provided between the precast foundation and the precast wall.

[0016] In conjunction with the first aspect, in one feasible manner, the precast wall body comprises, from the outside to the inside, a reflective layer, a waterproof layer, an outer protective layer, an airtight layer, a thermal insulation layer, a sound insulation layer, a vapor barrier layer, an inner protective layer, and a decorative layer, wherein a protective layer tie member is provided between the outer protective layer and the inner protective layer.

[0017] The wall-foundation connection structure for prefabricated passive houses provided by this invention has the following advantages compared with the prior art: the prefabricated wall is different from the conventional one. The prefabricated wall of this invention is provided with a steel sleeve at the lower end, and the main body of the prefabricated wall is prefabricated in the steel sleeve. The strength of the steel sleeve is used to integrate the layers of the main body of the prefabricated wall together, and self-clamping components and self-connecting components are prefabricated at the same time. The steel sleeve provides reliable connection support for the self-clamping components, and a first connecting groove for the self-clamping components is provided on the prefabricated foundation. The self-connecting components are built into a second connecting groove in the prefabricated foundation and connect with the wall embedded parts pre-embedded in the prefabricated wall body.

[0018] When connecting the precast wall to the precast foundation, the steel sleeve at the lower end of the precast wall is aligned with the installation groove on the precast foundation. The wall embedded part first contacts the bottom of the installation groove and passes downward through the first connecting hole. When the wall embedded part is connected to the self-connecting component built into the second connecting groove, the self-clamping component is clamped into the first connecting groove of the precast foundation, and the lower end face of the steel sleeve contacts the bottom of the installation groove, realizing the automatic connection between the precast wall and the precast foundation.

[0019] The precast wall construction and connection to the precast foundation provided by this invention eliminate the need for on-site pouring, greatly reducing on-site wet work. On-site construction is simple and convenient, reducing labor intensity, shortening the construction cycle, and reducing energy waste. Furthermore, factory prefabrication allows for effective quality control, reducing the problem of uncontrollable on-site construction quality.

[0020] The connection between the precast wall and the precast foundation provided by this invention is a dual connection through a self-clamping component and a self-connecting component, which not only makes the connection simple but also ensures a reliable connection.

[0021] Secondly, embodiments of the present invention also provide a wall-foundation connection construction method, based on the wall-foundation connection structure applicable to prefabricated passive houses, the method comprising: The factory manufactures precast foundations, steel sleeves, wall embedded parts, self-clamping components, self-connecting components, first steel plate energy-dissipating components, second steel plate energy-dissipating components, energy-dissipating tie rods, and protective layer tie rods; An airtight layer, a thermal insulation layer, a sound insulation layer, and a vapor barrier layer are arranged inside the steel sleeve. A protective layer tie piece is arranged that penetrates the airtight layer, the thermal insulation layer, the sound insulation layer, and the vapor barrier layer. A wall embedded part is arranged that passes through the steel sleeve. An outer protective layer and an inner protective layer are poured outside the airtight layer and the vapor barrier layer, and the steel sleeve is poured as a whole; a waterproof layer and a reflective layer are installed outside the outer protective layer, and a decorative layer is installed inside the inner protective layer to complete the construction of the precast wall; The first steel plate energy-consuming component is installed on the precast wall, and the self-clamping assembly is installed on the steel sleeve; The self-connecting component is built into the second connecting groove of the prefabricated foundation, and the second steel plate energy-consuming component is assembled on the prefabricated foundation. The precast wall is vertically inserted into the installation groove of the precast foundation, and connected to the precast foundation through the self-clamping component and the self-connecting component; An energy-dissipating tie rod is installed between the precast wall and the precast foundation, and thermal insulation material is filled into the pores of the mounting groove.

[0022] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the wall-foundation connection structure applicable to prefabricated passive houses provided in Embodiment 1 of the present invention; Figure 2 This is a structural schematic diagram of the prefabricated wall body provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the self-connecting component provided in Embodiment 1 of the present invention; Figure 4 This is a structural schematic diagram of the wall embedded part provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the first steel plate energy-consuming component provided in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the structure of the second steel plate energy-consuming component provided in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the structure of the prefabricated foundation provided in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the steel sleeve provided in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the self-clamping assembly provided in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the structure of the protective layer tie member provided in Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the wall and foundation connection structure for prefabricated passive houses provided in Embodiment 2 of the present invention (the self-connecting components are different from those in Embodiment 1). Figure 12 This is a schematic diagram of the wall and foundation connection structure for prefabricated passive houses provided in Embodiment 4 of the present invention (the self-connecting components are different from those in Embodiment 1).

[0025] Explanation of reference numerals in the attached figures: 1. Precast wall; 101. Reflective layer; 102. Waterproof layer; 103. Outer protective layer; 104. Airtight layer; 105. Thermal insulation layer; 106. Sound insulation layer; 107. Vapor barrier layer; 108. Inner protective layer; 109. Decorative layer; 110. Protective layer tie; 1101. Thermal insulation section; 1102. Extension section; 1103. Tie anchor block; 2. Wall embedded parts; 201. Anchor section; 202. Connection section; 203. Clip; 3. Steel sleeve; 301. Anchor plate; 302. Reinforcing rib; 303. Self-clamping assembly; 3031. Connecting plate; 3032. Hinge rod; 3033. Clamping plate; 3034. Clamping spring; 4. Precast foundation; 401. Mounting groove; 402. 403. First connecting groove; 404. Anchoring part; 405. Reserved hole; 406. First connecting hole; 407. Second connecting groove; 408. Expansion groove; 5. Self-connecting assembly; 501. Connecting sleeve; 5011. Second connecting hole; 502. Cover plate; 503. Slider; 504. Self-locking spring; 505. Second baffle; 506. Third baffle; 507. First baffle; 508. Slide plate; 509. Energy-dissipating spring; 6. First steel plate energy-dissipating component; 601. First contact plate; 602. First steel plate assembly; 603. Anchor rod; 7. Second steel plate energy-dissipating component; 701. Second contact plate; 702. Second steel plate assembly; 703. Bolt; 704. Pad; 8. Thermal insulation material; 9. Energy-dissipating tie rod. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0028] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0029] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0030] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., used in the description of the embodiments of this application should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] Please refer to the following: Figures 1 to 12 The present invention will now describe the wall-foundation connection structure applicable to prefabricated passive houses. The wall-foundation connection structure for prefabricated passive houses includes a prefabricated foundation 4 and a prefabricated wall 1. The prefabricated foundation 4 has a prefabricated installation groove 401, a first connecting groove 402, and a second connecting groove 406. The first connecting groove 402 is prefabricated within the installation groove 401; the second connecting groove 406 is prefabricated on the bottom surface of the prefabricated foundation 4. The prefabricated wall 1 includes a steel sleeve 3 and a prefabricated wall body prefabricated within the steel sleeve 3. The lower end of the steel sleeve 3 is adapted to the installation groove 401, and a self-clamping component 303, which self-clamps into the first connecting groove 402, is also provided on the outer side of the lower end of the steel sleeve 3. A wall embedded part 2 is prefabricated within the prefabricated wall body, and the wall embedded part 2 passes downward through the steel sleeve 3.

[0032] When the precast wall 1 is connected to the precast foundation 4, the lower end of the wall embedded part 2 passes through the first connecting hole 405 on the precast foundation 4 along with the precast wall 1 and is connected to the self-connecting component 5 built into the second connecting groove 406; the precast wall 1 is snapped onto the precast foundation 4 by the self-clamping component 303.

[0033] The wall-foundation connection structure for prefabricated passive houses provided by this invention has the following advantages compared with the prior art: the prefabricated wall 1 is different from the conventional one. The prefabricated wall 1 of this invention is provided with a steel sleeve 3 at the lower end, and the prefabricated wall body is prefabricated in the steel sleeve 3. The strength of the steel sleeve 3 is used to integrate the layers of the prefabricated wall body together, and the self-clamping component 303 and the self-connecting component 5 are prefabricated at the same time. The steel sleeve 3 provides reliable connection support for the self-clamping component 303. At the same time, a first connecting groove 402 for the self-clamping component 303 is provided on the prefabricated foundation 4. The self-connecting component 5 is built into the second connecting groove 406 of the prefabricated foundation 4 and connected to the wall embedded part 2 pre-embedded in the prefabricated wall 1.

[0034] When the precast wall 1 is connected to the precast foundation 4, the steel sleeve 3 at the lower end of the precast wall 1 is aligned with the mounting groove 401 on the precast foundation 4. The wall embedded part 2 first contacts the bottom of the mounting groove 401 and passes downward through the first connecting hole 405. When the wall embedded part 2 is connected to the self-connecting component 5 built into the second connecting groove 406, the self-clamping component 303 is clamped into the first connecting groove 402 of the precast foundation 4. The lower end face of the steel sleeve 3 contacts the bottom of the mounting groove 401, realizing the automatic connection between the precast wall 1 and the precast foundation 4.

[0035] The precast wall 1 and its connection with the precast foundation 4 provided by this invention do not require on-site pouring, which greatly reduces the on-site wet work process. On-site construction is simple and convenient, reducing labor intensity, shortening the construction cycle, and reducing energy waste. Furthermore, factory prefabrication allows for effective quality control, reducing the problem of uncontrollable on-site construction quality.

[0036] The connection between the precast wall 1 and the precast foundation 4 provided by the present invention is a dual connection through the self-clamping component 303 and the self-connecting component 5, which not only makes the connection simple but also ensures a reliable connection.

[0037] The self-connecting component 5 serves as the self-connection between the precast wall 1 and the precast foundation 4. Several embodiments are given below.

[0038] As an embodiment 1 of the self-connecting component 5, combined with Figure 1 and Figure 3 The self-connecting assembly 5 includes a connecting sleeve 501, a first baffle 507, a second baffle 505, a cover plate 502, a self-locking spring 504, and a split slider 503. The connecting sleeve 501 is placed upside down in the second connecting groove 406 with its opening facing downwards. The cover plate 502 closes the lower opening of the connecting sleeve 501. The top plate of the connecting sleeve 501 is provided with a second connecting hole 5011 coaxial with the first connecting hole 405. The first baffle 507, the second baffle 505, the split slider 503, and the self-locking spring 504, which are usually separate components, are all enclosed within the connecting sleeve 501 by the cover plate 502. This makes the self-connecting assembly 5 a single unit, built into the second connecting groove, eliminating the need for on-site assembly and simplifying the on-site assembly process.

[0039] A guide gap is formed between the first baffle 507 and the second baffle 505, and the slider 503 is slidably disposed within the guide gap in the horizontal direction; the self-locking spring 504 is connected in the horizontal direction between the connecting sleeve 501 and the slider 503; the guide gap formed by the first baffle 507 and the second baffle 505 facilitates the movement of the slider 503. This design makes it easy to manufacture and assemble the self-connecting component 5. During assembly, the first baffle 507 is first installed in the connecting sleeve 501; then one end of the self-locking spring 504 is connected to the inner wall of the connecting sleeve 501, and the other end is connected to the slider 503 placed on the first baffle 507; then the second baffle 505 is installed in the connecting sleeve 501; finally, the cover plate 502 is installed.

[0040] The first baffle 507 and the second baffle 505 are respectively provided with a first through hole and a second through hole coaxial with the second connecting hole 5011; when the self-locking spring 504 naturally extends, the slider 503 extends into the through channel formed by the first through hole and the second through hole; wherein, the first connecting hole 405 on the precast foundation 4, the second connecting hole 5011 on the top plate of the connecting sleeve 501, and the first through hole on the first baffle 507 and the second through hole on the second baffle 505 together form a through channel, providing structural support for the connection between the wall embedded part 2 and the precast foundation 4.

[0041] The connecting sleeve 501 provided in the above embodiment can be cylindrical or quadrangular prism, and its internal space can also be a circular hole or a rectangular hole (radial cross section, or cross section shape along the horizontal direction). When the connecting sleeve 501 has a circular hole inside, the first baffle 507 and the second baffle 505 are both circular in shape. The through hole is a circular hole or a rectangular hole that adapts to the locking block 203. A pair of sliders 503 are symmetrically arranged or four are evenly distributed around the through hole to form two pairs of sliders 503. Each pair of sliders 503 is open, and four self-locking springs 504 are correspondingly arranged to lock the locking block 203 from four directions evenly distributed around the circumference.

[0042] The lower end of the wall pre-embedded part 2 is provided with a locking block 203. The locking block 203 passes through the first connecting hole 405, the second connecting hole 5011, and the first through hole, and pushes the slider 503 to compress the self-locking spring 504. It then passes through the two sliders 503 and extends into the second through hole. The slider 503 returns to its original position under the elastic force of the self-locking spring 504 and abuts against the upper surface of the locking block 203 to limit its movement. Through the automatic connection between the wall pre-embedded part 2 and the self-connecting assembly 5, no manual operation is required throughout the process, making the connection between the precast wall 1 and the precast foundation 4 simple and convenient.

[0043] As a specific embodiment of the wall embedded part 2 of the present invention, combined with Figure 1 and Figure 4The wall embedded part 2 includes an integrally connected anchoring section 201, connecting section 202, and locking block 203. The surface of the anchoring section 201 is provided with several grooves or spiral ribs to enhance the anchoring firmness with the precast wall 1. The connecting section 202 passes through the aforementioned through channel, and its maximum radial dimension is smaller than the maximum dimension of the locking block 203. The wall embedded part 2 is made of stainless steel, and its radial cross-section can be circular or square. The locking block 203 is mushroom-shaped, with a small radial dimension at its lower end, which facilitates pressing and pushing open the slider 503. Correspondingly, the upper surface of the slider 503 is provided with a guide surface to facilitate the locking block 203 applying force to the slider 503.

[0044] Based on Example 1, combined with Figure 1 and Figure 3 The self-connecting assembly 5 also includes a sliding plate 508 and an energy-dissipating spring 509. The sliding plate 508 is located on the first baffle 507 and slides against the inner wall of the connecting sleeve 501. The energy-dissipating spring 509 is compressed between the top plate of the connecting sleeve 501 and the sliding plate 508. The sliding plate 508 is provided with a third through hole coaxial with the second connecting hole 5011. The lower end of the wall embedded part 2 passes through the energy-dissipating spring 509 and the third through hole. The energy-dissipating spring 509 provides an energy-absorbing and vibration-damping effect between the precast wall 1 and the precast foundation 4.

[0045] Both the energy-dissipating spring 509 and the self-locking spring 504 can be disc springs or ordinary compression springs.

[0046] Based on Example 1, combined with Figure 1 and Figure 3 The self-connecting assembly 5 also includes a third baffle 506 disposed between the first baffle 507 and the second baffle 505. The third baffle 506 has a fourth through hole coaxial with the second through hole 5011. The size of the fourth through hole is larger than that of the first through hole to form a guide gap. A self-locking spring 504 is connected between the third baffle 506 and the slider 503. The third baffle 506 facilitates the connection of the self-locking spring 504.

[0047] The self-connecting component 5 can also be as in embodiment 2, combined with... Figure 1 and Figure 12 The difference between Embodiment 2 and Embodiment 1 is that the first baffle 507, the second baffle 505 and the third baffle 506 are combined into one piece and named a guide block. A through channel is set in the middle of the guide block, and a guide gap is set perpendicular to the through channel. The self-locking spring 504 and the slider 503 are installed in the guide gap.

[0048] The self-connecting component 5 can also be as described in embodiment 3, which can be referred to. Figure 1The difference between Embodiment 3 and Embodiment 1 is that the first baffle 507, the second baffle 505, and the third baffle 506 are integrated into one unit and named a guide block. A through channel is provided in the middle of the guide block, and an avoidance slot is provided on the bottom surface of the guide block. The slider 503 is rotatably connected to the inner wall opposite to the avoidance slot via a shaft. The self-locking spring 504 is connected between the slider 503 and the bottom of the avoidance slot. When the locking block 203 moves downward, it pushes the slider 503 to rotate downward around the shaft and stretches the self-locking spring 504. When the locking block 203 passes the slider 503, the slider 503 is reset under the action of the self-locking spring 504 and locked on the upper surface of the locking block 203.

[0049] The self-connecting component 5 can also be the same as in embodiment 4, combined with... Figure 1 and Figure 12 In reality, the lower end of the wall embedded part 2 does not have a locking block 203, but is fastened with a nut instead, and is not self-connected.

[0050] In some embodiments, combined with Figure 1 and Figure 9 The self-clamping assembly 303 includes a fixed seat fixed to the outside of the steel sleeve 3, a bent plate hinged to the fixed seat, and a clamping spring 3034. The bent plate has a connecting plate 3031 and a clamping plate 3033. The clamping spring 3034 is connected between the clamping plate 3033 and the steel sleeve 3. The connecting plate 3031 is pressed against the steel sleeve 3 by the elastic force of the clamping spring 3034, and the clamping plate 3033 enters the first connecting groove 402. The precast wall 1 is installed downward in the mounting groove 401. The clamping plate 3033 is pressed by the anchoring part 403 formed by the first connecting groove 402, compressing the clamping spring 3034 and retracting upward. After the clamping plate 3033 passes the anchoring part 403, it enters the first connecting groove 402 under the elastic reset action of the clamping spring 3034, and the connecting plate 3031 abuts against the steel sleeve 3, realizing the automatic clamping of the precast wall 1 and the precast foundation 4. A hinge rod 3032 is provided at the junction of the connecting plate 3031 and the snap-fit ​​plate, allowing the integrally bent plate to be rotatably mounted on the hinge rod 3032. The bending angle of the bent plate is greater than 90°. The connecting plate 3031 provides support for the snap-fit ​​plate, and a snap-fit ​​spring 3034 is mounted on the upper surface of the snap-fit ​​plate. A fixing seat is welded to the steel sleeve 3, providing an installation structure for the bent plate.

[0051] The snap-fit ​​spring 3034 can be a disc spring, a tension spring, or a torsion spring.

[0052] The above embodiments mainly discuss the automatic connection between the precast wall 1 and the precast foundation 4. Among them, the self-clamping components 303 are symmetrically arranged on opposite sides of the steel sleeve 3, with multiple components evenly distributed on each side along the length direction of the precast wall 1; and multiple first connecting grooves 402 are provided on the corresponding precast foundation 4 along the length direction.

[0053] Similarly, multiple wall embedded parts 2 are pre-embedded along the length of the precast wall 1. The wall embedded parts 2 are symmetrically arranged on the inner and outer sides of the precast wall 1. Specifically, they are pre-embedded in the inner protective layer 108 and the outer protective layer 103. The inner protective layer 108 and the outer protective layer 103 are concrete layers cast in the factory, and the wall embedded parts 2 are cast in them. Correspondingly, a second connecting groove 406 is set at the bottom of the precast foundation 4, and a self-connecting component 5 is configured in each connecting groove.

[0054] The precast wall body is inserted into the steel sleeve 3, wherein the steel sleeve 3 and the precast wall body are cast together as one piece during factory prefabrication. The height of the steel sleeve 3 is lower than that of the precast wall body, generally less than 1 / 3 of the height of the precast wall body. In order to improve the firmness of the precast connection between the precast wall body and the steel sleeve 3, the following technical means are adopted in the embodiments of the present invention.

[0055] In some embodiments, see Figure 8 An anchor plate 301, which is reinforcedly connected to the precast wall body, is provided on the inner wall of the steel sleeve 3. The arrangement and structure of the anchor plate 301 can be varied. Example 1: Multiple anchor plates 301 are evenly arranged from top to bottom along the inner wall of the steel sleeve 3, extending along the length of the precast wall 1, and are staggered relative to those on the inner wall. Example 2: The anchor plate 301 is divided into multiple segments along the length of the precast wall 1, and reinforcing ribs 302 are provided on the width of both ends of the steel sleeve 3, with multiple reinforcing ribs 302 arranged along the height direction. By providing anchor plates 301 and reinforcing ribs 302 inside the steel sleeve 3, the contact area between the cast-in-place concrete and the steel sleeve 3 is increased, and the anchor plates 301 act as a restraint on the precast wall body, enhancing the firmness of the connection between the precast wall body and the steel sleeve 3.

[0056] The seismic performance of prefabricated passive houses is also one of the key factors in testing the quality of houses. In response to the second problem raised in the background technology, in order to improve the seismic performance of houses, the present invention adopts the following implementation methods.

[0057] In some embodiments, see Figure 7 An expansion groove 407 with a width greater than that of the precast wall 1 is provided in the installation groove 401; a first steel plate energy-consuming component 6 is symmetrically arranged in the expansion groove 407 and on both sides of the precast wall 1; a second steel plate energy-consuming component 7 is symmetrically arranged in the expansion groove 407 and on the opposite inner wall of the precast foundation 4; the expansion groove 407 is also filled with thermal insulation material 8.

[0058] In the above embodiment, a first steel plate energy-dissipating component 6 and a second steel plate energy-dissipating component 7 are provided between the precast foundation 4 and the precast wall 1. Both the first steel plate energy-dissipating component 6 and the second steel plate energy-dissipating component 7 can participate in the seismic energy dissipation at the connection between the precast foundation 4 and the precast wall 1. Through multiple energy dissipation mechanisms, the connection between the precast wall 1 and the precast foundation 4 is more reliable and can better resist seismic forces. Moreover, the compression and tension states of the first steel plate energy-dissipating component 6 and the second steel plate energy-dissipating component 7 can be adjusted according to actual needs, so that the connection between the precast foundation 4 and the precast wall 1 has the expected stiffness and energy dissipation capacity.

[0059] Among them, the bottom of the steel sleeve 3 is an arc-shaped curved surface, and the corresponding mounting groove 401 is an arc-shaped concave curved surface; when the mounting groove 401 is expanded, an expansion groove with a horizontal bottom surface is formed on both sides of the mounting groove 401.

[0060] See Figure 1 and Figure 5 The first steel plate energy-absorbing component 6 includes a first contact plate 601, a first steel plate group 602 (consisting of multiple first steel plates), and an anchor rod 603. One end of the anchor rod 603 is connected to the first contact plate 601, and the other end passes through the first steel plate group 602 and is connected to the precast wall 1. Anchor holes for connecting the anchor rod 603 are reserved on the steel sleeve 3 and the main body of the precast wall 1. The first steel plate group 602 is limited on the anchor rod 603 by the first contact plate 601 to prevent the first steel plate group 602 from falling off the anchor rod 603, and also to maintain a seismic energy-absorbing deformation gap between the first steel plate groups 602 and between the first steel plate group 602 and the first contact plate 601.

[0061] See Figure 1 and Figure 6 The second steel plate energy-consuming component 7 includes a second contact plate 701, a second steel plate assembly 702, a bolt 703, and a washer 704. A pre-drilled hole 404 is provided on the precast foundation 4 for the bolt 703 to pass through. One end of the bolt is connected to the second contact plate 701, and the other end passes through the second steel plate assembly 702 and the pre-drilled hole 404 on the precast foundation 4, and is fixed by a nut, thus connecting the second steel plate energy-consuming component 7 to the precast foundation 4.

[0062] By adjusting the number of steel plates in the first steel plate group 602 and the second steel plate group 702, the rigidity and energy dissipation capacity after the precast foundation 4 and the precast wall 1 are connected can be adjusted, thereby adjusting the seismic performance. The second steel plate energy dissipation component 7 is equipped with a pad 704, and the manufacturing errors of the precast foundation 4 and the precast wall 1 can be eliminated by adjusting the thickness of the pad 704.

[0063] In some embodiments, see Figure 1As shown, energy-dissipating tie rods 9 are also installed between the precast foundation 4 and the precast wall 1. The energy-dissipating tie rods 9 are symmetrically arranged on both sides of the precast wall 1, and multiple rods are evenly distributed along the length of the precast wall 1. When the precast wall 1 sways to both sides, energy can be absorbed through the stretching and shortening of the energy-dissipating tie rods 9, improving seismic performance and enhancing the reliability of the connection between the precast foundation 4 and the precast wall 1.

[0064] Among them, the energy-consuming pull bar 9 can be an elastic or flexible pull rope, cable, wire rope, etc.

[0065] In the above embodiment, an energy-dissipating disc spring, a first steel plate energy-dissipating component 6, a second steel plate energy-dissipating component 7, and an energy-dissipating tie rod 9 are provided between the precast foundation 4 and the precast wall 1. The energy-dissipating disc spring, the first steel plate energy-dissipating component 6, the second steel plate energy-dissipating component 7, and the energy-dissipating tie rod 9 can all participate in the seismic energy dissipation at the connection between the precast foundation 4 and the precast wall 1. Through multiple energy dissipation mechanisms, the connection between the precast wall 1 and the precast foundation 4 is more reliable and can better resist seismic forces. The compression and tension states of the energy-dissipating disc spring, the first steel plate energy-dissipating component 6, the second steel plate energy-dissipating component 7, and the energy-dissipating tie rod 9 can be adjusted according to actual needs, so that the connection between the precast foundation 4 and the precast wall 1 has the expected stiffness and energy dissipation capacity. A pad 704 is provided in the second energy-dissipating steel plate component. The thickness of the pad 704 can be adjusted to eliminate manufacturing errors between the precast foundation 4 and the precast wall 1.

[0066] The multi-stage energy dissipation configuration described above significantly improves the earthquake resistance of the building. This multi-stage energy dissipation configuration includes a first steel plate energy dissipation component 6, a second steel plate energy dissipation component 7, an energy dissipation spring 509, and an energy dissipation tie rod 9.

[0067] Thermal insulation performance is a perennial theme in housing construction. This invention adopts the following technical means to improve thermal insulation performance from the aspects of prefabricated wall 1 and the connection between prefabricated wall 1 and prefabricated foundation 4.

[0068] In some embodiments, see Figure 2 As shown, the precast wall body includes, from the outside to the inside, a reflective layer 101, a waterproof layer 102, an outer protective layer 103, an airtight layer 104, a thermal insulation layer 105, a sound insulation layer 106, a vapor barrier layer 107, an inner protective layer 108, and a decorative layer 109. A protective layer tie member 110 is provided between the outer protective layer 103 and the inner protective layer 108.

[0069] A reflective layer 101 is installed on the outer side of the precast wall 1. In summer, the reflective layer 101 can reflect sunlight, further reducing heat exchange between the inside and outside of the precast wall 1. In winter, the reflective layer 101 can be rolled up to enhance the wall's heat absorption capacity, thereby improving the building's thermal insulation performance. Thermal insulation material 8 is installed in the expansion groove at the junction of the precast foundation 4 and the precast wall 1, enhancing the thermal insulation capacity at the connection between the precast foundation 4 and the precast wall 1. The thermal insulation material 8 can be rock wool (slag wool), glass wool, or other materials.

[0070] See Figure 10 As shown, the protective layer tie member 110 includes an insulation section 1101, an extension section 1102, and a tie member anchor block 1103. The insulation section 1101 and the extension section 1102 are connected by threads, and the tie member anchor block 1103 is anchored at the end of the extension section 1102 in a triangular prism shape. The tie member anchor block 1103 in the protective layer tie member 110 is anchored at the end of the extension section 1102 in a triangular prism shape. This ensures reliable anchoring of the protective layer tie member 110 in the outer protective layer 103 and the inner protective layer 108 without affecting the concrete pouring level of the outer protective layer 103 and the inner protective layer 108, thereby improving the integrity of the precast wall 1.

[0071] The insulation section 1101 in the protective layer tie member 110 of this application is made of low thermal conductivity materials such as BFRP, which effectively reduces its damage to the insulation layer 105 in the precast wall 1, reduces heat transfer, and improves the thermal insulation effect of the wall.

[0072] Alternatively, the stiffening ribs in the steel sleeve 3 can also be made of low thermal conductivity materials such as BFRP, which reduces heat transfer and improves the thermal insulation effect of the precast wall 1.

[0073] The full English name of BFRP is Bamboo Fiber Reinforced Polymer; its name is also commonly referred to as bamboo fiber reinforced composite material.

[0074] The core characteristic of low thermal conductivity materials is their low thermal conductivity. They can also be fiber-reinforced polymers (FRP series, which, like BFRP, belong to composite materials, have low thermal conductivity and good structural properties): for example, GFRP (Glass Fiber Reinforced Polymer), CFRP (Carbon Fiber Reinforced Polymer), flax fiber reinforced polymers, and hemp fiber reinforced polymers, etc. These materials are lightweight and have low thermal conductivity, making them suitable as auxiliary reinforcement components in thermal insulation structures.

[0075] The wall-foundation connection structure provided in this embodiment of the invention can also be used for passive renovation of the first-floor infill walls of existing frame structures.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0077] Based on the same inventive concept, see [link to inventive concept] Figures 1 to 12 As shown in the embodiments, this application also provides a construction method for connecting a wall and a foundation. Embodiment 1: The method includes: The factory manufactures precast foundations 4, steel sleeves 3, precast wall bodies, wall embedded parts 2, self-clamping components 303, and self-connecting components 5; The main body of the precast wall is arranged inside the steel sleeve 3, and the wall embedded parts 2 are arranged through the steel sleeve 3; And the steel sleeve 3 is cast into one piece with the precast wall body to complete the production of the precast wall 1; Install the self-clamping assembly 303 onto the steel sleeve 3; The self-connecting component 5 is built into the second connection slot of the prefabricated foundation 4; The precast wall 1 is vertically inserted into the mounting groove 401 of the precast foundation 4, and connected to the precast foundation 4 through the self-clamping component 303 and the self-connecting component 5.

[0078] Example 2, see Figures 1 to 12 As shown, the construction methods include: The factory manufactures the following components: 4. Precast foundation; 3. Steel sleeve; 2. Wall embedded part; 3. Self-clamping component; 5. Self-connecting component; 6. First steel plate energy-consuming component; 7. Second steel plate energy-consuming component; 9. Energy-consuming tie rod; and 110. Protective layer tie rod. An airtight layer 104, a thermal insulation layer 105, a sound insulation layer 106, and a vapor barrier layer 107 are arranged inside the steel sleeve 3. A protective layer tie 110 is arranged that penetrates the airtight layer 104, the thermal insulation layer 105, the sound insulation layer 106, and the vapor barrier layer 107. A wall embedded part 2 is arranged that passes through the steel sleeve 3. An outer protective layer 103 and an inner protective layer 108 are poured outside the airtight layer 104 and the vapor barrier layer 107, and the steel sleeve 3 is poured as a whole; a waterproof layer 102 and a reflective layer 101 are installed outside the outer protective layer 103, and a decorative layer 109 is installed inside the inner protective layer 108, thus completing the fabrication of the precast wall 1; wherein, the wall embedded parts 2 are poured inside the outer protective layer 103 and the inner protective layer 108. Install the first steel plate energy-consuming component 6 on the precast wall 1, and install the self-clamping component 303 on the steel sleeve 3; The self-connecting component 5 is built into the second connecting groove of the prefabricated foundation 4, and the second steel plate energy-consuming component is assembled on the prefabricated foundation 4. The precast wall 1 is vertically inserted into the mounting groove 401 of the precast foundation 4, and connected to the precast foundation 4 through the self-clamping component 303 and the self-connecting component 5; An energy-dissipating tie rod 9 is installed between the precast wall 1 and the precast foundation 4, and thermal insulation material 8 is filled into the gap of the mounting groove 401.

[0079] The wall-foundation connection construction method provided in this application has the following beneficial effects: (1) In response to the problems of numerous wet operations, complex construction, long cycle, high strength, high energy consumption, and uncontrollable quality in cast-in-place connection, the construction method takes "factory prefabrication + on-site assembly" as the core to replace the traditional cast-in-place connection mode. The specific means include: First, the standardized production of all core components such as prefabricated foundation 4, steel sleeve 3, wall embedded parts 2, self-clamping components 303, and self-connecting components 5 are completed in the factory in advance; Second, the overall integrated production of prefabricated wall 1 is carried out in the factory, and the airtight layer 104, thermal insulation layer 105, sound insulation layer 106, and insulation layer 107 are completed in the factory. The arrangement of the vapor layer 107 and the protective layer tie member 110 in the steel sleeve 3, as well as the integrated casting of the outer protective layer 103, the inner protective layer 108 and the steel sleeve 3, simultaneously completes the installation of the waterproof layer 102, the reflective layer 101 and the decorative layer 109, realizing the finished product delivery of the precast wall 1; thirdly, the on-site adopts the "self-clamping + self-connection" assembly connection method, which only requires the precast wall 1 to be vertically inserted into the installation groove 401 of the precast foundation 4, and the connection is completed through the preset self-clamping component 303 and the self-connection component 5, without the need for a large amount of on-site casting work.

[0080] Factory prefabrication achieves standardization and precision in component production, avoiding the problems of high dependence on manual skills and significant impact of the construction environment on on-site casting. It ensures controllable construction quality from the source and solves the problem of uncontrollable quality in traditional on-site casting. On-site construction eliminates the need for complex wet operations, and connections are completed through assembly operations, significantly reducing on-site construction procedures, shortening the construction cycle, and reducing the labor intensity of construction workers. At the same time, centralized factory production avoids on-site material waste and energy consumption, meeting the needs of low-carbon transformation and solving the problems of high energy consumption and low efficiency in traditional on-site casting.

[0081] (2) To address the problem of existing connection structures lacking multi-stage energy dissipation configuration and having poor seismic performance, a multi-stage energy dissipation system is designed in the construction method to construct layered seismic protection. Specific measures include: first, installing a first steel plate energy dissipation component 6 on the precast wall 1 and assembling a second steel plate energy dissipation component 7 on the precast foundation 4 to form a double steel plate energy dissipation structure; second, installing energy dissipation springs 209 in the second connection groove between the precast wall and the precast foundation; and third, installing additional energy dissipation tie bars 9 after the precast wall 1 is connected to the precast foundation 4 to supplement the energy dissipation buffer. Through the combination of double steel plate energy dissipation components, energy dissipation springs 209, and energy dissipation tie bars 9, a multi-stage energy dissipation configuration is constructed to form a collaborative seismic resistance system.

[0082] When a building encounters seismic loads, the first and second steel plate energy-dissipating components 7 can preferentially absorb and dissipate seismic energy, buffering the seismic impact through their own deformation and reducing the transfer of load to the walls and foundation structure. The energy-dissipating tie rods 9 and energy-dissipating springs 209 further assist in energy dissipation, forming a multi-stage buffering and layered stress-relief seismic resistance mechanism, significantly improving the seismic performance of the connection structure. Compared with traditional connection structures without energy-dissipating configurations, this design can effectively resist seismic impacts of varying intensities, reduce the risk of building structural damage, solve the core problem of poor seismic performance in existing connection structures, and meet the seismic requirements of prefabricated buildings.

[0083] (3) To address the problem of poor thermal insulation performance of the wall and its connection, the construction method involves a full-dimensional thermal insulation design from the wall body to the connection nodes, forming a closed-loop thermal insulation system. Specific measures include: First, the precast wall body is equipped with an airtight layer 104, a vapor barrier layer 107, a thermal insulation layer 105, and a sound insulation layer 106. At the same time, a protective layer tie piece 110 is installed through these four layers to ensure that the thermal insulation layer 105 and the sound insulation layer 106 are installed firmly and their integrity is not damaged. Second, when the precast wall 1 is made, a protective layer is poured on the outside of the airtight layer 104 and the vapor barrier layer 107 to achieve the integration of the thermal insulation structure and the wall. At the same time, a waterproof layer 102 and a reflective layer 101 are installed on the outside of the outer protective layer 103 to reduce the impact of external temperature conduction and rainwater erosion on the thermal insulation effect. Third, after on-site connection, thermal insulation material is filled into the pores of the expansion groove 407 between the precast wall 1 and the precast foundation 4 to seal the gaps at the connection nodes and eliminate weak points in the thermal insulation.

[0084] The construction method provided by this invention simultaneously improves construction convenience, quality control, seismic performance, and thermal insulation effect. It effectively breaks through the technical bottleneck of connecting the walls and foundations of prefabricated passive houses, providing reliable support for the promotion and application of prefabricated passive houses, and meeting the national green development strategy and carbon emission reduction needs in the construction field.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wall-foundation connection structure suitable for prefabricated passive houses, characterized in that, include: The precast foundation (4) is precast with an installation groove (401), a first connecting groove (402), and a second connecting groove (406); The first connecting groove (402) is prefabricated within the mounting groove (401); the second connecting groove (406) is prefabricated on the bottom surface of the prefabricated foundation (4); and The precast wall (1) includes a steel sleeve (3) and a precast wall body precast within the steel sleeve (3); the lower end of the steel sleeve (3) is adapted to the mounting groove (401), and a self-clamping component (303) that self-clamps into the first connecting groove (402) is also provided on the outer side of the lower end of the steel sleeve (3); a wall pre-embedded part (2) is pre-embedded in the precast wall body, and the wall pre-embedded part (2) passes downward through the steel sleeve (3); When the precast wall (1) is connected to the precast foundation (4), the lower end of the wall embedded part (2) passes through the first connecting hole (405) on the precast foundation (4) along with the precast wall (1) and is connected to the self-connecting component (5) built into the second connecting groove (406); the precast wall (1) is snapped onto the precast foundation (4) by the self-clamping component (303).

2. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, The self-connecting assembly (5) includes a connecting sleeve (501), a first baffle (507), a second baffle (505), a cover plate (502), a self-locking spring (504), and a split slider (503); the connecting sleeve (501) is inverted in the second connecting groove (406), the cover plate (502) closes the lower opening of the connecting sleeve (501), and the top plate of the connecting sleeve (501) is provided with a second connecting hole (5011) coaxial with the first connecting hole; the first baffle (507) and the second baffle (505) are... A guide gap is formed between the slider (503) and the connecting sleeve (501). The slider (503) is slidably disposed in the guide gap in the horizontal direction. The self-locking spring (504) is connected in the horizontal direction between the connecting sleeve (501) and the slider (503). The first baffle (507) and the second baffle (505) are respectively provided with a first through hole and a second through hole coaxial with the second connecting hole (5011). When the self-locking spring (504) is naturally extended, the slider (503) partially extends into the through channel formed by the first through hole and the second through hole. The lower end of the wall embedded part (2) is provided with a locking block (203). The locking block (203) passes through the first connecting hole, the second connecting hole (5011), and the first through hole and pushes the slider (503) to compress the self-locking spring (504). It passes through the two sliders (503) and extends into the second through hole. The slider (503) is reset and extended under the elastic force of the self-locking spring (504) and abuts against the upper surface of the locking block (203) to limit the locking block (203).

3. The wall-foundation connection structure for prefabricated passive houses as described in claim 2, characterized in that, The self-connecting assembly (5) further includes a sliding plate (508) and an energy-dissipating spring (509). The sliding plate (508) is located on the first baffle (507) and slides in cooperation with the inner wall of the connecting sleeve (501). The energy-dissipating spring (509) is compressed between the top plate of the connecting sleeve (501) and the sliding plate (508). The sliding plate (508) is provided with a third through hole coaxial with the second connecting hole (5011). The lower end of the wall embedded part (2) passes through the energy-dissipating spring (509) and the third through hole.

4. The wall-foundation connection structure for prefabricated passive houses as described in claim 2, characterized in that, The self-connecting assembly (5) further includes a third baffle (506) disposed between the first baffle (507) and the second baffle (505). The third baffle (506) is provided with a fourth through hole coaxial with the second through hole (5011). The size of the fourth through hole is larger than that of the first through hole to form the guide gap. The self-locking spring (504) is connected between the third baffle (506) and the slider (503).

5. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, The self-clamping assembly (303) includes a fixed seat fixed to the outside of the steel sleeve (3), a bent plate hinged to the fixed seat, and a clamping spring (3034). The bent plate has a connecting plate (3031) and a clamping plate (3033). The clamping spring (3034) is connected between the clamping plate (3033) and the steel sleeve (3). The connecting plate (3031) is pressed against the steel sleeve (3) by the elastic force of the clamping spring (3034), and the clamping plate (3033) enters the first connecting groove (402). The precast wall (1) is installed downward in the mounting groove (401). The snap-fit ​​plate (3033) is pressed by the anchor part (403) formed by the first connecting groove (402), compressing the snap-fit ​​spring (3034) and retracting upward. After the snap-fit ​​plate (3033) passes the anchor part (403), it enters the first connecting groove (402) under the elastic reset action of the snap-fit ​​spring (3034). The connecting plate (3031) abuts against the steel sleeve (3), realizing the automatic snap-fit ​​between the precast wall (1) and the precast foundation (4).

6. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, The inner wall of the steel sleeve (3) is provided with an anchor plate (301) that is reinforced to the main body of the precast wall.

7. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, The installation groove (401) is provided with an expansion groove (407) with a width greater than that of the precast wall (1); a first steel plate energy-consuming component (6) is symmetrically arranged in the expansion groove (407) and on both sides of the precast wall (1); a second steel plate energy-consuming component (7) is symmetrically arranged in the expansion groove (407) and on the inner wall opposite to the precast foundation (4); the expansion groove (407) is also filled with thermal insulation material (8).

8. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, An energy-dissipating tie rod (9) is also provided between the precast foundation (4) and the precast wall (1).

9. The wall-foundation connection structure for prefabricated passive houses as described in claim 1, characterized in that, The precast wall body comprises, from the outside to the inside, a reflective layer (101), a waterproof layer (102), an outer protective layer (103), an airtight layer (104), a thermal insulation layer (105), a sound insulation layer (106), a vapor barrier layer (107), an inner protective layer (108), and a decorative layer (109). A protective layer tie member (110) is provided between the outer protective layer (103) and the inner protective layer (108).

10. A construction method for connecting a wall to a foundation, based on the wall-to-foundation connection structure applicable to prefabricated passive houses as described in any one of claims 1-9, characterized in that, The method includes: The factory manufactures precast foundations (4), steel sleeves (3), wall embedded parts (2), self-clamping components (303), self-connecting components (5), first steel plate energy-consuming components (6), second steel plate energy-consuming components (7), energy-consuming tie rods (9) and protective layer tie rods (110); An airtight layer (104), a thermal insulation layer (105), a sound insulation layer (106), and a vapor barrier layer (107) are arranged inside the steel sleeve (3). A protective layer tie member (110) is arranged to penetrate the airtight layer (104), the thermal insulation layer (105), the sound insulation layer (106), and the vapor barrier layer (107). A wall embedded part (2) is arranged to pass through the steel sleeve (3). An outer protective layer (103) and an inner protective layer (108) are poured outside the airtight layer (104) and the vapor barrier layer (107), and the steel sleeve (3) is poured as a whole; a waterproof layer (102) and a reflective layer (101) are installed outside the outer protective layer (103), and a decorative layer (109) is installed inside the inner protective layer (108) to complete the production of the prefabricated wall (1); The first steel plate energy-consuming component (6) is installed on the prefabricated wall (1), and the self-clamping assembly (303) is installed on the steel sleeve (3); The self-connecting component (5) is built into the second connecting groove (406) of the prefabricated foundation (4), and the second steel plate energy-consuming component is assembled on the prefabricated foundation (4); The precast wall (1) is vertically inserted into the mounting groove (401) of the precast foundation (4) and connected to the precast foundation (4) through the self-clamping component (303) and the self-connecting component (5); Energy-dissipating tie rods (9) are installed between the precast wall (1) and the precast foundation (4), and thermal insulation material (8) is filled into the pores of the mounting groove (401).

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