Connecting structure of deformation joint between steel structure and concrete structure and construction method
By using a combination of eaves, drainage gutters, and flashing at the expansion joints between the steel and concrete structures, the problems of poor waterproofing and aesthetics were solved, achieving effective rainwater drainage and visual shielding, thus improving the building's waterproofing performance and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA CONSTR SCI & IND CORP LTD
- Filing Date
- 2025-12-04
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the sealing treatment of expansion joints between steel and concrete structures suffers from poor waterproofing and aesthetics. The galvanized steel plates are not tightly connected, which can easily lead to gaps, resulting in a harsh appearance and insufficient coordination with the building facade.
The structure adopts a combination of steel parapet wall, eaves, drainage gutter and flashing. Rainwater is guided to the drainage gutter through the eaves, and the waterproof slope layer and flashing prevent backflow. Visual obstruction is achieved through the shielding part to improve the aesthetics.
It effectively prevents water leakage at expansion joints, improves waterproofing and aesthetics, and achieves harmony between steel and concrete structures.
Smart Images
Figure CN121295832B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building construction technology, and in particular to a deformation joint connection structure and construction method between a steel structure and a concrete structure. Background Technology
[0002] In recent years, with the continuous expansion of industrial building scale, there has been an increasing number of integrated industrial plant projects, often involving adjacent steel structure and concrete plant buildings. To accommodate the differences in temperature changes, material properties, and structural deformation between steel and concrete structures, expansion joints are necessary between them. The treatment of these expansion joints is crucial for their waterproofing and aesthetics. However, current methods for sealing these expansion joints often use galvanized steel sheets, which have significant shortcomings in practical application: firstly, effective sealing between the galvanized steel sheet and the substrate of different materials is difficult to achieve, and gaps easily form under long-term deformation and vibration, resulting in poor waterproofing and leakage; secondly, the galvanized steel sheet has a rigid appearance and obvious seams, lacking overall coordination with the building facade and resulting in poor aesthetics. Therefore, existing methods for treating expansion joints between steel and concrete structures suffer from poor waterproofing and aesthetics. Summary of the Invention
[0003] This invention provides a connection structure and construction method for expansion joints between steel and concrete structures, aiming to solve the problems of poor waterproofing and poor aesthetics in the existing methods of treating expansion joints between steel and concrete structures.
[0004] In a first aspect, embodiments of the present invention provide a deformation joint connection structure between a steel structure and a concrete structure, comprising: a steel structure body, a concrete structure body, an eaves slab, a drainage gutter, and a first flashing slab; an deformation joint is formed between the steel structure body and the concrete structure body; the steel structure body is provided with a steel parapet wall, and the steel parapet wall includes a shielding portion and a non-shielding portion lower than the shielding portion; the eaves slab is a reinforced concrete slab cantilevered outward from the upper edge beam of the concrete structure body; the eaves slab is located behind the shielding portion and extends across the deformation joint to the inner side of the non-shielding portion; wherein, the top of the shielding portion is higher than the top of the eaves slab; the drainage gutter is provided on the roof of the steel structure body, and the drainage gutter is located below the side end of the eaves slab; one end of the first flashing slab is provided on the eaves slab, and the other end of the first flashing slab is provided on the upper inner side of the non-shielding portion.
[0005] Furthermore, the expansion joint connection structure between the steel structure and the concrete structure also includes a waterproof slope layer; the waterproof slope layer is laid on the upper surface of the eaves board and forms a drainage slope pointing towards the drainage gutter.
[0006] Furthermore, the waterproof slope layer is a waterproof mortar layer, and the drainage slope is not less than 5%.
[0007] Furthermore, the height difference between the top of the shield and the top of the eaves board is not less than 100mm.
[0008] Furthermore, the first flashing includes a first flat portion, a connecting portion, a second flat portion, and an inclined portion; the first flat portion is connected to the top of the second flat portion through the connecting portion, and the bottom of the second flat portion is connected to the inclined portion; the first flat portion is connected to the bottom of the eaves board, the second flat portion is connected to the upper inner side of the unshielded portion, and the inclined portion is inclined toward the drainage gutter.
[0009] Furthermore, the expansion joint connection structure between the steel structure and the concrete structure also includes a second flashing, which is disposed at the bottom of the inner wall panel of the parapet wall of the steel structure.
[0010] Furthermore, the expansion joint connection structure between the steel structure and the concrete structure also includes fasteners and sealing blocks. One end of the first flashing is connected to the eaves board through several of the fasteners, and the other end of the first flashing is connected to the upper inner side of the non-shielded part through several of the fasteners and several of the sealing blocks.
[0011] Furthermore, the bottom of the drainage gutter is provided with several drainage holes, which are connected to rainwater pipes.
[0012] Secondly, embodiments of the present invention also provide a construction method for a joint connection structure between a steel structure and a concrete structure, applied to the joint connection structure between the steel structure and the concrete structure described in the first aspect, comprising: The steel parapet wall is prefabricated in the factory according to the preset component drawing to obtain the prefabricated steel parapet wall; wherein, the steel parapet wall includes a shielding part and a non-shielding part lower than the shielding part; The steel structure body is constructed according to the preset steel structure design drawings, and the prefabricated steel structure parapet wall is installed simultaneously. The concrete structure body is constructed according to the preset concrete structure design drawings. Simultaneously, a reinforced concrete slab cantilevered outward from its upper side beam is poured to form an eaves slab. The eaves slab is located behind the shielding part and extends across the expansion joint to the inside of the non-shielding part. The top of the shielding part is higher than the top of the eaves slab. Install drainage gutters on the roof of the steel structure body, and position the drainage gutters below the side end of the eaves board; One end of the first flashing is installed on the eaves board, and the other end of the first flashing is installed on the upper inner side of the unshielded part.
[0013] Furthermore, after installing one end of the first flashing onto the eaves board and installing the other end of the first flashing onto the upper inner side of the unobstructed portion, the method further includes: A waterproof slope layer is laid on the upper surface of the eaves board, and the waterproof slope layer forms a drainage slope pointing towards the drainage gutter.
[0014] This invention provides a connection structure and construction method for expansion joints between steel and concrete structures. The structure includes a steel structure body, a concrete structure body, an eaves slab, a drainage gutter, and a first flashing. The steel structure body has a steel parapet wall, which includes a shielding portion and a non-shielded portion lower than the shielding portion. The eaves slab is a reinforced concrete slab cantilevered outward from the upper edge beam of the concrete structure body, located behind the shielding portion and extending across the expansion joint to the inner side of the non-shielded portion. The drainage gutter is located on the roof of the steel structure body, below the side end of the eaves slab. The two ends of the first flashing are respectively located at the upper inner sides of the eaves slab and the non-shielded portion. This invention allows rainwater from the expansion joint to be drained to the drainage gutter through the eaves slab, prevents rainwater backflow through the first flashing, and provides visual shielding of the eaves slab through the shielding portion of the steel parapet wall, effectively preventing leakage at the expansion joint and improving aesthetics. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A partial structural schematic diagram of a deformation joint connection structure between a steel structure and a concrete structure provided in an embodiment of the present invention; Figure 2 A partial structural schematic diagram of the expansion joint connection structure between a steel structure and a concrete structure provided in another embodiment of the present invention; Figure 3 This is a schematic flowchart illustrating a construction method for a deformation joint connection structure between a steel structure and a concrete structure, according to an embodiment of the present invention. Figure 4 This is a schematic flowchart illustrating a construction method for a deformation joint connection structure between a steel structure and a concrete structure, as provided in another embodiment of the present invention.
[0017] The following are explanations of the reference numerals in the attached figures: 1. Steel structure body; 11. Steel structure parapet wall; 111. Covering part; 112. Uncovered part; 113. Inner wall panel; 2. Concrete structure body; 3. Eaves board; 4. Drainage gutter; 41. Drainage hole; 42. Rainwater pipe; 5. First flashing; 51. First flat part; 52. Connection part; 53. Second flat part; 54. Inclined part; 6. Expansion joint; 7. Waterproof slope layer; 8. Second flashing; 9. Fasteners; 10. Sealing block. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0022] Please see Figure 1 and Figure 2 , Figure 1 A partial structural schematic diagram of a deformation joint connection structure between a steel structure and a concrete structure provided in an embodiment of the present invention; Figure 2 This is a partial structural diagram of the expansion joint connection structure between the steel structure and the concrete structure, provided as another embodiment of the present invention.
[0023] This invention provides a connection structure for an expansion joint 6 between a steel structure and a concrete structure, characterized in that it includes: a steel structure body 1, a concrete structure body 2, an eaves 3, a drainage gutter 4, and a first flashing 5; an expansion joint 6 is formed between the steel structure body 1 and the concrete structure body 2; the steel structure body 1 is provided with a steel parapet wall 11, and the steel parapet wall 11 includes a shielding portion 111 and a non-shielding portion 112 lower than the shielding portion 111; the eaves 3 is the upper edge of the concrete structure body 2. A reinforced concrete slab cantilevered outwards, the eaves slab 3 is located behind the shielding part 111 and extends across the expansion joint 6 to the inner side of the non-shielding part 112; wherein, the top of the shielding part 111 is higher than the top of the eaves slab 3; the drainage gutter 4 is provided on the roof of the steel structure body 1, and the drainage gutter 4 is located below the side end of the eaves slab 3; one end of the first flashing slab 5 is provided on the eaves slab 3, and the other end of the first flashing slab 5 is provided on the upper inner side of the non-shielding part 112.
[0024] In this embodiment, refer to Figure 1 and Figure 2The steel structure body 1 and the concrete structure body 2 are arranged alternately, forming an expansion joint 6 between them. The steel parapet wall 11 in the steel structure body 1 is constructed in a non-uniform height form, specifically including a shielding part 111 and a non-shielding part 112. The height of the non-shielding part 112 is lower than the height of the shielding part 111, and a drainage gutter 4 is provided on the roof of the steel structure body 1, located inside the steel parapet wall 11. In the concrete structure body 2, an eaves board 3 is integrally cast on the outer side of the upper edge beam near the expansion joint 6, and the eaves board 3 is located above the non-shielding part 112 of the steel parapet wall 11 in the steel structure body 1 near the expansion joint 6. The eaves board 3 extends across the expansion joint 6 to the drainage gutter 4 inside the non-shielding part 112, so that the side end of the eaves board 3 faces the drainage gutter 4 below, so that rainwater from the expansion joint 6 can be drained into the drainage gutter 4 through the eaves board 3. Meanwhile, a first flashing 5 is used to connect the eaves 3 and the unobstructed part 112 of the steel structure parapet wall 11. The first flashing 5 prevents rainwater from flowing back into the expansion joint 6 in the path of the eaves 3 to drain rainwater to the gutter, ensuring that there is no water leakage at the expansion joint 6, effectively preventing water leakage at the expansion joint 6 and improving the waterproof effect. Furthermore, a setback gap is reserved between the facade of the eaves 3 facing the observer and the facade of the concrete structure 2 facing the observer. That is, the end of the eaves 3 is not aligned with the end of the concrete structure 2. The length of the eaves 3 is less than the length of the expansion joint 6. The facade of the eaves 3 facing the observer will not be exposed to the edge of the expansion joint 6, but will be hidden inside the expansion joint 6. This makes the eaves 3 located behind the shielding part 111 of the steel parapet wall 11 on the side of the steel structure 1 closest to the expansion joint 6. The top of the shielding part 111 is higher than the top of the eaves 3. Thus, the expansion joint 6 is shielded by the shielding part 111, thereby achieving visual shielding of the eaves 3 and improving aesthetics.
[0025] The expansion joint 6 connection structure between the steel structure and the concrete structure provided in this embodiment of the invention, under the ingenious spatial relationship and synergistic effect of the eaves 3, the steel parapet wall 11, the drainage gutter 4 and the first flashing 5, can guide rainwater from the expansion joint 6 to the drainage gutter 4 through the eaves 3, prevent rainwater backflow through the first flashing 5, and achieve visual obstruction of the eaves 3 through the shielding part 111 of the steel parapet wall 11, effectively preventing water leakage from the expansion joint 6 and improving aesthetics.
[0026] In a more specific embodiment, the expansion joint 6 connection structure between the steel structure and the concrete structure provided in this embodiment of the invention further includes a waterproof slope layer 7; the waterproof slope layer 7 is laid on the upper surface of the eaves board 3 and forms a drainage slope pointing towards the drainage gutter 4.
[0027] In this embodiment, refer to Figure 1A waterproof slope layer 7 is laid on the upper surface of the eaves board 3, and the waterproof slope layer 7 forms a drainage slope pointing towards the drainage gutter 4. The waterproof slope layer 7 can play the role of waterproofing and backflow, so that rainwater can quickly flow down the slope to the drainage gutter 4, while protecting the eaves board 3 and improving the service life of the eaves board 3.
[0028] In a more specific embodiment, the waterproof slope layer 7 is a waterproof mortar layer, and the drainage slope is not less than 5%.
[0029] In this embodiment, refer to Figure 1 The waterproof slope layer 7 is a waterproof mortar layer. Waterproof mortar is applied to the surface of the eaves board 3, and the drainage slope of the waterproof mortar layer on the upper surface of the eaves board 3 is not less than 5% to facilitate rainwater to flow down the slope quickly. Preferably, the drainage slope is set to 5%.
[0030] In a more specific embodiment, the height difference between the top of the shielding part 111 and the top of the eaves board 3 is not less than 100mm.
[0031] In this embodiment, refer to Figure 2 The eaves board 3 is covered by the covering part 111. The top of the covering part 111 must be higher than the top of the eaves board 3, and the height difference between the top of the covering part 111 and the top of the eaves board 3 must be no less than 100mm. Preferably, from the perspective of economy, practicality and usability, the height difference between the top of the covering part 111 and the top of the eaves board 3 is set to 100mm.
[0032] In a more specific embodiment, the first flashing 5 includes a first flat portion 51, a connecting portion 52, a second flat portion 53, and an inclined portion 54; the first flat portion 51 is connected to the top of the second flat portion 53 through the connecting portion 52, and the bottom of the second flat portion 53 is connected to the inclined portion 54; the first flat portion 51 is connected to the bottom of the eaves 3, the second flat portion 53 is connected to the upper inner side of the unobstructed portion 112, and the inclined portion 54 is inclined toward the drainage gutter 4.
[0033] In this embodiment, refer to Figure 1The first flashing 5 is composed of a first flat portion 51, a connecting portion 52, a second flat portion 53, and an inclined portion 54 connected in sequence. The first flat portion 51 is parallel to and connected to the bottom of the eaves 3, and the second flat portion 53 is parallel to and connected to the unobstructed portion 112 of the steel parapet wall 11. The first flat portion 51 and the second flat portion 53 are connected by the connecting portion 52. The inclined portion 54 is located at the bottom of the second flat portion 53 and is inclined towards the drainage gutter 4. Thus, the first flat portion 51, the connecting portion 52, and the second flat portion 53 prevent rainwater from entering the expansion joint 6, while the inclined portion 54 guides rainwater to the drainage gutter 4. Preferably, the first flashing 5 is made of 0.8mm thick color steel plate.
[0034] In a more specific embodiment, the expansion joint 6 connection structure between the steel structure and the concrete structure provided in this embodiment of the invention further includes a second flashing 8, which is disposed at the bottom of the inner wall panel 113 of the parapet wall 11 of the steel structure.
[0035] In this embodiment, refer to Figure 1 A second flashing plate 8 is provided at the bottom of the inner wall panel 113 of the steel structure parapet wall 11. The second flashing plate 8 is located between the inner wall panel 113 of the steel structure parapet wall 11 and the drainage gutter 4 to prevent rainwater from flowing into the interior of the steel structure parapet wall 11 through the gap between the inner wall panel 113 of the steel structure parapet wall 11 and the drainage gutter 4.
[0036] In a more specific embodiment, the expansion joint 6 connection structure between the steel structure and the concrete structure provided in this embodiment of the invention further includes fasteners 9 and sealing blocks 10. One end of the first flashing 5 is connected to the eaves board 3 through a plurality of the fasteners 9, and the other end of the first flashing 5 is connected to the inner upper end of the non-shielding part 112 through a plurality of the fasteners 9 and a plurality of the sealing blocks 10.
[0037] In this embodiment, refer to Figure 1 The two ends of the first flashing 5 are connected to the inner upper end of the eaves board 3 and the unobstructed part 112 of the steel structure parapet wall 11 by several fasteners 9 respectively. A sealing block 10 is set at the fastener 9 between the first flashing 5 and the unobstructed part 112, so that the installation of the first flashing 5 can be completed quickly by several fasteners 9. At the same time, the sealing block 10 prevents water from seeping into the interior of the steel structure parapet wall 11 along the fastener 9.
[0038] In a more specific embodiment, the bottom of the drainage gutter 4 is provided with a plurality of drainage holes 41, which are connected to the rainwater pipe 42.
[0039] In this embodiment, refer to Figure 1The steel structure body 1 is equipped with a rainwater pipe 42. The drainage gutter 4 discharges the collected water into the rainwater pipe 42 through several drainage holes 41 at its bottom, and then discharges it through the rainwater pipe 42.
[0040] The expansion joint 6 connection structure between the steel structure and the concrete structure provided in this embodiment of the invention includes a steel structure body 1, a concrete structure body 2, an eaves slab 3, a drainage gutter 4, and a first flashing 5; the steel structure body 1 is provided with a steel structure parapet wall 11, which includes a shielding part 111 and a non-shielding part 112 lower than the shielding part 111; the eaves slab 3 is a reinforced concrete slab that cantilevered outward from the upper side beam of the concrete structure body 2, which is located behind the shielding part 111 and extends across the expansion joint 6 to the inner side of the non-shielding part 112; the drainage gutter 4 is provided on the roof of the steel structure body 1 and is located below the side end of the eaves slab 3; the two ends of the first flashing 5 are respectively provided on the upper inner side of the eaves slab 3 and the non-shielding part 112. The present invention can guide rainwater from the expansion joint 6 to the drainage gutter 4 through the eaves board 3, prevent rainwater backflow through the first flashing board 5, and achieve visual obstruction of the eaves board 3 through the shielding part 111 of the steel structure parapet wall 11, effectively preventing water leakage from the expansion joint 6 and improving the aesthetics.
[0041] This invention also provides a construction method for a joint connection structure between a steel structure and a concrete structure, applicable to the aforementioned joint connection structure between a steel structure and a concrete structure. (See attached document.) Figure 3 , Figure 3 This is a schematic flowchart of a construction method for a deformation joint connection structure between a steel structure and a concrete structure according to an embodiment of the present invention. The construction method includes steps S11 to S15.
[0042] S11. The steel structure parapet wall is prefabricated in the factory according to the preset component drawing to obtain the prefabricated steel structure parapet wall; wherein, the steel structure parapet wall includes a shielding part and a non-shielding part lower than the shielding part; S12. Construct the steel structure body according to the preset steel structure design drawings, and simultaneously install the prefabricated steel structure parapet wall. S13. Construct the concrete structure body according to the preset concrete structure design drawings, and simultaneously pour reinforced concrete slabs that cantilever outward from the upper side beams to form eaves slabs, and make the eaves slabs located behind the shielding part and extending across the expansion joint to the inner side of the non-shielding part; wherein, the top of the shielding part is higher than the top of the eaves slab. S14. Install drainage gutters on the roof of the steel structure body, and position the drainage gutters below the side end of the eaves board; S15. Install one end of the first flashing plate on the eaves board, and install the other end of the first flashing plate on the upper inner side of the unshielded part.
[0043] In this embodiment, firstly, during the steel structure detailing, the steel parapet wall is prefabricated in a factory according to a pre-set component drawing to obtain a prefabricated steel parapet wall. This prefabricated steel parapet wall is constructed with unequal heights, specifically including a shielding section and a non-shielding section, with the non-shielding section being lower than the shielding section. Specifically, the elevations of the shielding and non-shielding sections can be limited according to the elevation of the eaves board; the elevation of the non-shielding section is lower than the eaves board elevation, and the elevation of the shielding section is higher than the eaves board elevation. This ensures that the eaves board, formed during subsequent construction, is located above the non-shielding section, and the top of the shielding section is higher than the top of the eaves board, thus shielding the eaves board. Then, the steel structure body is constructed according to the pre-set steel structure design drawing, and the prefabricated steel parapet wall is installed simultaneously, completing the steel structure body construction. Construction of the concrete structure body is carried out according to the pre-set concrete structure design drawings, forming an expansion joint between the concrete structure body and the steel structure body. Simultaneously, a reinforced concrete slab is poured outwardly on the outer side of the upper edge beam near the expansion joint in the concrete structure body to form an eaves slab. The eaves slab is positioned behind the sheltered portion and extends across the expansion joint to the inner side of the unsheathed portion, completing the construction of the concrete structure body and the eaves slab. Next, drainage gutters are installed on the roof of the steel structure body, positioned below the side end of the eaves slab. Finally, the two ends of the first flashing are installed on the upper inner side of the unsheathed portion of the eaves slab and the steel parapet wall, respectively. The expansion joint connection structure between the steel structure and the concrete structure prepared by the construction method provided in this invention, under the ingenious spatial relationship and synergistic effect of the eaves board, the steel parapet wall, the drainage gutter and the first flashing, can guide rainwater at the expansion joint to the drainage gutter through the eaves board, prevent rainwater backflow through the first flashing, and achieve visual obstruction of the eaves board through the shielding part of the steel parapet wall, effectively preventing water leakage at the expansion joint and improving aesthetics.
[0044] In one embodiment, see Figure 4 , Figure 4 A schematic flowchart illustrating a construction method for a deformation joint connection structure between a steel structure and a concrete structure, provided in another embodiment of the present invention, further includes the following after step S15: S16. Lay a waterproof slope layer on the upper surface of the eaves board, and make the waterproof slope layer form a drainage slope pointing towards the drainage gutter.
[0045] In this embodiment, the waterproof slope layer can serve the functions of waterproofing and backflow prevention, allowing rainwater to quickly flow down the slope to the drainage ditch, while also protecting the eaves board and extending its service life.
[0046] In one embodiment, the waterproof slope layer in step S16 is a waterproof mortar layer, and the drainage slope is not less than 5%.
[0047] In one embodiment, the height difference between the top of the shield and the top of the eaves is not less than 100mm.
[0048] In one embodiment, the first flashing in step S15 includes a first flat portion, a connecting portion, a second flat portion, and an inclined portion; the first flat portion is connected to the top of the second flat portion through the connecting portion, and the bottom of the second flat portion is connected to the inclined portion; the first flat portion is connected to the bottom of the eaves board, the second flat portion is connected to the upper inner side of the unshielded portion, and the inclined portion is inclined toward the drainage gutter.
[0049] In one embodiment, during step S12, a second flashing is installed at the bottom of the inner wall panel of the steel parapet wall.
[0050] In one embodiment, when performing step S15, one end of the first flashing is connected to the eaves board by a plurality of fasteners, and the other end of the first flashing is connected to the upper inner side of the non-shielded part by a plurality of fasteners and a plurality of sealing blocks.
[0051] In one embodiment, the bottom of the drainage gutter installed in step S14 is provided with a plurality of drainage holes, which are connected to rainwater pipes.
[0052] This invention discloses a construction method for a joint connection structure between a steel structure and a concrete structure. The joint connection structure formed by this construction method can guide rainwater at the joint to the drainage ditch through the eaves board, prevent rainwater backflow through the first flashing board, and achieve visual obstruction of the eaves board through the shielding part of the steel parapet wall, effectively preventing water leakage at the joint and improving aesthetics.
[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A construction method for a joint connection structure between a steel structure and a concrete structure, applicable to joint connections between steel structures and concrete structures, characterized in that, The expansion joint connection structure between the steel structure and the concrete structure includes the steel structure body, the concrete structure body, the eaves board, the drainage gutter, the first flashing, the waterproof slope layer, the second flashing, fasteners, and the sealing block. An expansion joint is formed between the steel structure body and the concrete structure body. The steel structure body is provided with a steel parapet wall, which includes a shielding part and a non-shielding part lower than the shielding part. The eaves board is a reinforced concrete slab that cantilevered outward from the upper side beam of the concrete structure body. The eaves board is located behind the shielding part and extends across the expansion joint to the inner side of the non-shielding part. The top of the shielding part is higher than the top of the eaves board. The drainage gutter is installed on the roof of the steel structure body, and the drainage gutter is located below the side end of the eaves board; one end of the first flashing is installed on the eaves board, and the other end of the first flashing is installed on the upper inner side of the unshielded part. The waterproof slope layer is laid on the upper surface of the eaves board and forms a drainage slope pointing towards the drainage gutter; The first flashing includes a first flat portion, a connecting portion, a second flat portion, and an inclined portion; the first flat portion is connected to the top of the second flat portion through the connecting portion, and the bottom of the second flat portion is connected to the inclined portion; the first flat portion is connected to the bottom of the eaves board, the second flat portion is connected to the upper inner side of the unobstructed portion, and the inclined portion is inclined toward the drainage gutter; The second flashing is installed at the bottom of the inner wall panel of the steel structure parapet wall; One end of the first flashing is connected to the eaves board by a plurality of fasteners, and the other end of the first flashing is connected to the upper inner side of the unshielded part by a plurality of fasteners and a plurality of sealing blocks. The construction method includes: The steel parapet wall is prefabricated in the factory according to the preset component drawing to obtain the prefabricated steel parapet wall; wherein, the steel parapet wall includes a shielding part and a non-shielding part lower than the shielding part; The steel structure body is constructed according to the preset steel structure design drawings, and the prefabricated steel structure parapet wall is installed simultaneously. The concrete structure body is constructed according to the preset concrete structure design drawings. Simultaneously, a reinforced concrete slab cantilevered outward from its upper side beam is poured to form an eaves slab. The eaves slab is located behind the shielding part and extends across the expansion joint to the inside of the non-shielding part. The top of the shielding part is higher than the top of the eaves slab. Install drainage gutters on the roof of the steel structure body, and position the drainage gutters below the side end of the eaves board; One end of the first flashing is installed on the eaves board, and the other end of the first flashing is installed on the upper inner side of the unshielded part.
2. The construction method for the expansion joint connection structure between steel structure and concrete structure according to claim 1, characterized in that, The waterproof slope layer is a waterproof mortar layer, and the drainage slope is not less than 5%.
3. The construction method for the expansion joint connection structure between the steel structure and the concrete structure according to claim 1, characterized in that, The height difference between the top of the shield and the top of the eaves board shall not be less than 100mm.
4. The construction method for the expansion joint connection structure between steel structure and concrete structure according to claim 1, characterized in that, The bottom of the drainage gutter is provided with several drainage holes, which are connected to rainwater pipes.
5. The construction method for the expansion joint connection structure between steel structure and concrete structure according to claim 1, characterized in that, After installing one end of the first flashing onto the eaves board and the other end of the first flashing onto the upper inner side of the unobstructed portion, the method further includes: A waterproof slope layer is laid on the upper surface of the eaves board, and the waterproof slope layer forms a drainage slope pointing towards the drainage gutter.