A basement advanced water-stopping structure and construction method thereof

Abstract

The present application relates to the technical field of post-cast joint construction of basement buildings, and in particular discloses an advanced water-stop structure for a basement and a construction method thereof, wherein the water-stop structure comprises a water-stop foundation, a water-stop body and a concrete foundation; the water-stop body comprises a horizontal water-stop, which is embedded in the water-stop foundation and provided with a vertical water-stop, the vertical water-stop comprising a foamed concrete layer and a rubber water-stop layer located outside the foamed concrete layer; a rubber water-stop rod is passed through the foamed concrete layer; the steel bars of the concrete layer extend to the horizontal water-stop and are inserted into the rubber water-stop layer, and the steel bars of the concrete layer inserted into the rubber water-stop layer extend into the foamed concrete layer; seepage water can penetrate into the horizontal water-stop along the gaps at the direction of the steel bars of the concrete foundation, and the horizontal water-stop can directly prevent the seepage water. At the same time, the seepage water penetrates into the foamed concrete layer, and the water-stop properties of the foamed concrete layer can further effectively prevent the spread of the seepage water.

Description

Technical Field

[0001] The present application relates to the technical field of post-cast strip construction in basement buildings, and in particular to a basement advance water-stopping structure and a construction method thereof. Background Art

[0002] Post-cast strips are concrete strips placed in appropriate locations on foundation slabs, walls, and beams during construction to prevent harmful cracks caused by uneven shrinkage or settlement of cast-in-place reinforced concrete structures. These strips are designed to prevent harmful cracks that can occur after the main concrete is poured. To reduce the additional stress caused by concrete shrinkage, post-cast strips are often required in basement construction to address the problem of harmful cracks that can occur after the main concrete is poured.

[0003] In the traditional method of setting up post-cast joints, the post-cast joint concrete needs to be poured after the main structure of the basement is completed. Before the post-cast joints are closed, debris will inevitably fall into them, making them difficult to clean. At the same time, rainwater and construction water can easily enter the basement and foundation post-cast joints before the post-cast joints are closed, causing serious rusting of the steel bars in the post-cast joints, creating quality hazards, increasing construction difficulty, affecting the normal construction progress, and increasing the overall construction time.

[0004] In order to shorten the overall construction time, a waterstop body consisting of a horizontal waterstop and a vertical waterstop is constructed on the foundation waterproof cushion layer, and then a concrete foundation is poured on the waterstop body to obtain an advanced waterstop structure of the basement post-cast joint with a waterproof structure. There is no need to wait for the completion of the construction of the basement main structure, which solves the problem that rainwater, construction water and debris can easily enter the basement and foundation post-cast joint, affecting the normal construction progress and increasing the overall construction time.

[0005] However, the current advanced water-stop structure still has the problem of water seepage gaps in the concrete water-stop body due to concrete pouring not meeting quality requirements. The water seepage gaps appear inside and on the surface of the concrete water-stop body, but because the water seepage gaps are very small, they are difficult to detect with the naked eye or with the help of conventional detection equipment, resulting in sporadic water seepage points in the advanced water-stop structure, partial structure, or even overall structure water-stop failure in the later stages of construction. Summary of the Invention

[0006] In order to improve the water-stopping reliability of the advance water-stopping structure of the post-cast zone of the basement, the present application provides a basement advance water-stopping structure and a construction method thereof.

[0007] In the first aspect, the present application provides a basement advance water-stopping structure, which adopts the following technical solutions:

[0008] A basement advance water-stop structure, including a basement advance water-stop structure, characterized in that: it includes a water-stop foundation, a water-stop body and a concrete foundation; the water-stop foundation includes a foundation waterproof cushion layer; the water-stop body includes a horizontal water-stop strip laid on the foundation waterproof cushion layer, and the horizontal water-stop strip is embedded in the water-stop foundation, a vertical water-stop strip is arranged on the horizontal water-stop strip, and the vertical water-stop strip includes a foamed concrete layer and a rubber water-stop layer located outside the foamed concrete layer; the concrete foundation includes a concrete layer cast on the water-stop foundation, and the vertical water-stop strip separates the concrete layer into two parts on the left and right; the rubber water-stop layer is laid on the left and right sides of the foamed concrete layer; the foamed concrete A rubber water stop rod is passed through the concrete layer, and the rubber water stop rod is passed through the end face of the foamed concrete layer and exposed to the outside; the concrete layer is set as a steel-concrete structure, the steel bars of the concrete layer extend to the horizontal water stop, and the steel bars of the concrete layer are bent and pressed down to abut against the horizontal water stop, the steel bars of the concrete layer that form abutment with the horizontal water stop are inserted into the rubber water stop layer, and the steel bars of the concrete layer inserted into the rubber water stop layer extend into the foamed concrete layer; the foundation waterproof cushion layer is covered with a concrete covering layer set as a steel-concrete structure, connection holes are formed on the concrete covering layer, and the steel bars of the concrete layer are welded and fixed to the steel bars in the concrete covering layer through the connection holes.

[0009] By adopting the above technical solution, the characteristic of the rubber water-stop rod itself that it swells and stops water when it comes into contact with water is utilized. When water seepage occurs and the seeping water penetrates into the interior of the foamed concrete layer through the surface cracks of the foamed concrete layer, the large number of closed pores of the foamed concrete layer itself can first play a certain role in preventing water seepage. On this basis, if a small amount of seepage water continues to penetrate into the interior of the foamed concrete layer and contacts the rubber water-stop rod, the rubber water-stop rod swells when it comes into contact with water and quickly blocks the seepage pores inside the foamed concrete, playing a secondary seepage-stopping role. When water seepage occurs and the seepage water penetrates into the interior of the foamed concrete layer through the end gaps of the foamed concrete layer, the rubber water-stop rod swells when it comes into contact with water and blocks the gaps at the end of the foamed concrete layer. At this time, the closed pores of the foamed concrete layer play an auxiliary seepage-stopping role.

[0010] Improve the installation stability of the horizontal waterstop and the waterstop foundation below, and at the same time improve the structural integrity of the poured concrete foundation and the waterstop body. The improvement of structural integrity helps to reduce the occurrence of more water seepage gaps in the future. On the other hand, if water seepage occurs in the concrete foundation and the water seeps into the concrete foundation, the water can penetrate into the horizontal waterstop along the gaps at the direction of the steel bars of the concrete foundation. The horizontal waterstop can directly prevent the water seepage from spreading to other areas. At the same time, the water seeps into the foamed concrete layer, and the water-stopping properties of the foamed concrete layer can further effectively prevent the spread of water seepage.

[0011] By welding the steel bars in the concrete cover layer to fix the steel bars of the upper concrete layer, it is convenient for construction workers to construct the concrete layer. At the same time, the structural integrity and stability of the concrete layer and the concrete cover layer are improved. The improvement of the structural integrity helps to reduce the occurrence of more water seepage gaps in the future. On the other hand, if the concrete layer seeps due to special circumstances, the seepage of the concrete layer can be guided through the connecting holes and the steel bar gaps and finally slowly penetrate into the water stop body, avoiding structural damage to the expansion joint main structure due to water seepage.

[0012] Preferably, the rubber waterstop rods include horizontal waterstop rods and vertical waterstop rods, and the horizontal waterstop rods and vertical waterstop rods are staggered; and rubber waterstop particles are evenly distributed in the foamed concrete layer.

[0013] By adopting the above technical solution, the staggered arrangement of horizontal waterstop rods and vertical waterstop rods is beneficial to improving the overall structural stability of the foamed concrete. More importantly, it is beneficial to prevent water seepage and isolate the water seepage in a certain area; and spreading rubber waterstop particles in the foamed concrete layer is beneficial to further improve the waterstop effect.

[0014] Preferably, depressions are formed on the left and right side surfaces of the foamed concrete layer, and the rubber water-stop layer is in contact with the side surfaces of the foamed concrete layer and partially elastically embedded in the depressions.

[0015] By adopting the above technical solution, the bonding strength between the foamed concrete layer and the rubber water-stop layer is higher and the structural stability during the pouring process is better; if the rubber water-stop layer is damaged due to special circumstances, the concave-convex matching structure formed by the rubber water-stop layer and the foamed concrete layer can play a certain role in diverting water seepage and stopping water infiltration.

[0016] Preferably, a mounting groove is formed on the horizontal waterstop, and the steel bars of the concrete layer are bent to fit in the mounting groove of the horizontal waterstop.

[0017] By adopting the above technical solution and utilizing an embedded matching structure, the stability of the bending steel bars of the concrete layer and the matching with the installation groove of the horizontal waterstop is improved, and the structural integrity and stability of the concrete foundation and the waterstop body are further improved.

[0018] Preferably, a positioning groove is formed on the horizontal waterstop, and the bottom end of the vertical waterstop is inserted into the positioning groove; the steel bars of the concrete layer that are embedded in the installation groove of the horizontal waterstop are inserted into the rubber waterstop layer.

[0019] By adopting the above technical solution, one is conducive to improving the overall structural stability of the water-stop body, and the other is conducive to improving the structural integrity of the water-stop body and the concrete foundation. More importantly, the seepage water can directly penetrate toward the rubber water-stop layer along the gaps in the direction of the steel bars of the concrete foundation, and the rubber water-stop layer of the horizontal water-stop strip can better prevent the spread of water seepage.

[0020] Preferably, the water-stop foundation further includes a waterproof foundation covering the foundation waterproof cushion layer, and the waterproof foundation is covered with a waterproof membrane layer, and the concrete covering layer is covered on the waterproof membrane layer.

[0021] By adopting the above technical solution, the multi-layer waterproof structure composed of the foundation waterproof cushion layer, waterproof foundation, waterproof membrane layer and concrete covering layer can effectively improve the waterproof effect of the water-stop foundation, while improving the structural strength of the water-stop foundation, facilitating the construction of the concrete foundation above, and providing certain support for the concrete foundation.

[0022] Preferably, a waterstop steel plate is vertically buried in the foamed concrete layer, and the waterstop steel plate divides the foamed concrete layer and the rubber waterstop rod in the foamed concrete layer into two symmetrical left and right parts, and rubber waterstop plates are provided on both left and right sides of the waterstop steel plate.

[0023] By adopting the above technical solution, the waterstop steel plate and the rubber waterstop plate form an integrated structure and play a role in preventing the spread of water seepage. The rubber waterstop plate can further seal the water seepage gaps near the waterstop steel plate after swelling when exposed to water, and cooperate with the rubber waterstop rod in the foamed concrete layer to achieve a secondary water-stopping effect. At the same time, it solves the problem of water seepage that penetrates through the water seepage gaps where the steel bars are located to the waterstop steel plate and continues to accumulate at a certain position.

[0024] Preferably, the steel bars of the concrete layer extending to the foamed concrete layer are inserted into the rubber waterstop plate and abut against the waterstop steel plate, and the left and right side surfaces of the waterstop steel plate are set as non-smooth surfaces.

[0025] By adopting the above technical solution, the water that penetrates into the waterstop steel plate through the seepage gaps where the steel bars are located can spread to the surrounding areas along the left and right sides of the waterstop steel plate, further solving the problem of continuous accumulation of seepage water at a certain position; at the same time, the rubber waterstop plate is in direct contact with the non-smooth surface of the waterstop steel plate, which can form a certain small gap. After the seepage water diffuses in the small gap, the contact area between the rubber waterstop plate and the seepage water becomes larger, which is conducive to the rapid expansion of the rubber waterstop plate, and in turn blocks the local area where the seepage occurs.

[0026] Preferably, the left and right side surfaces of the waterstop steel plate are both set as inclined slopes, the vertical cross-section of the waterstop steel plate in the width direction is trapezoidal, and the upper top surface area of ​​the waterstop steel plate is smaller than the lower bottom surface area.

[0027] By adopting the above technical solution, the structure of the waterstop steel plate is relatively stable during arrangement. More importantly, the water seepage at the upper position can spread downward along the inclined surface of the waterstop steel plate. One purpose is to avoid the accumulation of water seepage at a local position, and the other is to guide the water seepage at the upper position where water seepage is prone to occur downward to make full use of the rubber waterstop plate at the lower position.

[0028] In a second aspect, the present application provides a method for constructing a basement advance water-stop structure, which adopts the following technical solution:

[0029] A method for constructing a basement advance water-stop structure comprises the following steps: S1. water-stop foundation construction, laying a foundation waterproof cushion layer in a foundation pit; S2. water-stop main body construction, first laying a horizontal waterstop on the water-stop foundation, and then laying a vertical waterstop on the horizontal waterstop; when constructing the vertical waterstop, first pouring a foamed concrete layer, and then bonding and fixing a rubber waterstop layer on the outside of the foamed concrete layer; S3. concrete foundation construction, pouring a concrete layer on the water-stop foundation, and the concrete layer is divided into left and right parts by the water-stop main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a basement advance water-stop structure after removing the concrete foundation in an embodiment of the present application;

[0031] Figure 2 This is a cross-sectional schematic diagram of a basement advance water-stopping structure according to an embodiment of the present application;

[0032] Figure 3 yes Figure 2 A magnified schematic diagram of part A in the middle;

[0033] Figure 4 It is a schematic diagram used to show the structure of vertical waterstop;

[0034] Figure 5 It is a cross-sectional diagram mainly used to show the direction of steel bars;

[0035] Figure 6 It is a cross-sectional schematic diagram used to show the waterstop steel plate and rubber waterstop plate;

[0036] Figure 7 It is a cross-sectional schematic diagram used to illustrate the hydrophobic wrapped tube.

[0037] Explanation of the accompanying drawings: 1. Waterstop foundation; 11. Foundation waterproof cushion layer; 12. Waterproof foundation; 13. Waterproof membrane layer; 14. Concrete covering layer; 141. Connection hole; 142. Embedded groove; 2. Waterstop body; 21. Horizontal waterstop; 211. Positioning groove; 212. Installation groove; 22. Vertical waterstop; 221. Foamed concrete layer; 222. Rubber waterstop layer; 223. Waterstop steel plate; 224. Rubber waterstop plate; 3. Concrete foundation; 31. Concrete layer; 4. Rubber waterstop rod; 41. Horizontal waterstop rod; 42. Vertical waterstop rod; 5. Depression; 6. Hydrophobic wrapped pipe. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] The embodiment of the present application discloses a basement advance water-stopping structure.

[0040] Reference Figure 1 and Figure 2 As shown, a pre-cast waterstop structure for a basement is constructed. First, a waterstop foundation 1 is constructed at the post-cast zone after basement excavation. Then, a waterstop body 2 is constructed on top of the waterstop foundation 1. Finally, a concrete foundation 3 is constructed on top of the waterstop foundation 1 and the waterstop body 2. By constructing the pre-cast waterstop structure at the post-cast zone, the problem of rainwater, construction water, and other debris intruding into the post-cast zone can be effectively solved, improving the quality of post-cast zone construction and shortening the overall construction time.

[0041] Reference Figure 1 and Figure 2 As shown, the waterstop foundation 1 includes a foundation waterproof cushion layer 11. In the embodiment of the present application, the foundation waterproof cushion layer 11 is a concrete cushion layer poured in the excavated foundation pit. A waterproof foundation 12 is then laid on the concrete cushion layer, and a waterproof membrane layer 13 is further covered on the waterproof foundation 12. Finally, a concrete cover layer 14 is poured on the waterproof membrane layer 13. In the embodiment of the present application, a waterproof rubber belt is used as the waterproof foundation 12, and a composite polyester cloth is used as the waterproof membrane layer 13. Of course, other suitable composite waterproof membranes can also be selected to replace the composite polyester cloth.

[0042] Reference Figure 1 and Figure 2 As shown, the concrete covering layer 14 is completed by a steel-concrete pouring construction method, and when pouring the concrete covering layer 14, hole positions can be reserved according to the design, that is, connecting holes 141 are formed on the concrete covering layer 14, so that the steel bars in the concrete covering layer 14 can be welded and fixed to the steel bars of the concrete foundation 3 cast later on the water-stop foundation 1 and the water-stop body 2 through the connecting holes 141.

[0043] Reference Figure 1 and Figure 2 As shown, a multi-layer waterproof foundation 12 structure is formed by a foundation waterproof cushion layer 11, a waterproof foundation 12, a waterproof membrane layer 13 and a concrete covering layer 14 to improve the overall waterproof performance of the water-stop foundation 1, while at the same time improving its own structural strength and the structural integrity with the upper concrete foundation 3 to a certain extent.

[0044] Reference Figure 1 and Figure 2 As shown, the waterstop body 2 includes a horizontal waterstop 21 and a vertical waterstop 22. The horizontal waterstop 21 is laid horizontally on the concrete cover 14, and the vertical waterstop 22 is laid vertically on the horizontal waterstop 21, thereby forming the main structure.

[0045] Reference Figure 1 and Figure 2 As shown, in the embodiment of the present application, a waterproof rubber belt can be used as the horizontal waterstop 21. A horizontal, long strip embedding groove 142 is formed on the concrete covering layer 14 at the middle position in the width direction, and the horizontal waterstop 21 can be embedded in the embedding groove 142 as a whole and form an elastic embedding fit. Of course, a composite structure waterstop composed of a waterproof steel plate and a waterproof rubber belt can also be used as the horizontal waterstop 21. In this case, the waterproof steel plate is located on the bottom and side surfaces of the waterproof rubber belt and is in direct contact with the concrete covering layer 14. At the same time, the waterproof steel plate can be used as a forming mold for the embedding groove 142, that is, when the concrete covering layer 14 is poured, the waterproof steel plate is arranged to facilitate the construction of the embedding groove 142. After the concrete covering layer 14 is formed, the waterproof rubber belt is elastically embedded in the embedding groove 142.

[0046] It should be noted that the outer surface of the waterproof rubber belt embedded in the groove 142 is kept coplanar with the outer surface of the foundation waterproof cushion layer 11 , which is beneficial for the subsequent pouring of the concrete foundation 3 .

[0047] Reference Figure 2 and Figure 4 As shown, in the embodiment of the present application, the vertical waterstop 22 includes a foamed concrete layer 221 and rubber waterstop layers 222 located on the left and right sides of the foamed concrete layer 221, and the rubber waterstop layers 222 can be fixed to the side surfaces of the corresponding foamed concrete layer 221 by external bonding. A horizontal, elongated positioning groove 211 is pre-formed in the middle position along the width direction of the horizontal waterstop 21, and the bottom end of the vertical waterstop 22 composed of the foamed concrete layer 221 and the rubber waterstop layer 222 is vertically inserted into the positioning groove 211.

[0048] Reference Figure 2 and Figure 4As shown, a rubber water stop rod 4 is passed through the foamed concrete layer 221, and the rubber water stop rod 4 includes a horizontal water stop rod 41 and a vertical water stop rod 42. The horizontal water stop rod 41 and the vertical water stop rod 42 are arranged alternately in the foamed concrete layer 221, and the horizontal water stop rod 41 is passed through the end face of the foamed concrete layer 221 and exposed to the outside, while the vertical water stop rod 42 is passed through the bottom face of the foamed concrete layer 221 and exposed to the outside. If water seepage occurs and the water penetrates into the foamed concrete layer 221 through the gaps, the large number of closed pores in the foamed concrete layer 221 itself can first play a certain role in preventing water seepage. On this basis, if a small amount of water continues to penetrate into the interior of the foamed concrete layer 221 and contacts the rubber water-stop rod 4, the rubber water-stop rod 4 swells when it encounters water and quickly blocks the water-seepage pores inside the foamed concrete, playing a secondary anti-seepage role; and when water seepage occurs and the water penetrates into the interior of the foamed concrete layer 221 through the end gaps of the foamed concrete layer 221, the rubber water-stop rod 4 swells when it encounters water and blocks the gaps at the end of the foamed concrete layer 221. At this time, the closed pores in the foamed concrete layer 221 play an auxiliary anti-seepage role.

[0049] On this basis, rubber water-stop particles are evenly distributed inside the foamed concrete layer 221 to improve the water-stopping effect of the foamed concrete layer 221. The rubber water-stop particles can be pre-mixed into the concrete casting material and stirred evenly to improve the uniformity of the distribution of the rubber water-stop particles in the foamed concrete layer 221.

[0050] Reference Figure 2 and Figure 4 As shown, scattered depressions 5 are formed on both left and right side surfaces of the foamed concrete layer 221, and the side surfaces of the rubber water-stop layer 222 are fitted with the corresponding side surfaces of the foamed concrete layer 221. Moreover, after the rubber water-stop layer 222 is bonded and fixed to the side surfaces of the foamed concrete layer 221, it is partially elastically embedded in the depressions 5, which improves the structural strength and stability of the vertical water-stop strip 22 to a certain extent.

[0051] Reference Figure 2 and Figure 3 As shown, the concrete foundation 3 includes a cast concrete layer 31, which is a steel-concrete structure. The concrete layer 31 is formed on the water-stop foundation 1 and the horizontal waterstop 21 and is divided into two parts by the vertical waterstop 22. Figure 5As shown, a mounting groove 212 is also formed on the horizontal waterstop 21. The horizontal steel bars near the bottom position in the concrete layer 31 are bent and extended to the horizontal waterstop 21 and pressed down into the mounting groove 212 of the horizontal waterstop 21. At the same time, the horizontal steel bars in the concrete layer 31 are embedded with the corresponding mounting groove 212 after bending. On this basis, the horizontal steel bars in the concrete layer 31 continue to extend in the horizontal direction until they are inserted into the rubber waterstop layer 222, and continue to extend into the foamed concrete layer 221; and the horizontal steel bars near the upper position or the middle position in the concrete layer 31 are directly bent and extended to the rubber waterstop layer 222, and continue to extend into the foamed concrete layer 221.

[0052] Reference Figure 2 and Figure 3 As shown, in addition, from the above content about the water-stop foundation 1, it can be seen that the vertical steel bars in the concrete layer 31 can be bent and extended and then welded and fixed to the steel bars in the concrete cover layer 14 through the connecting holes 141, thereby improving the overall structural strength of the advanced water-stop structure.

[0053] Combine Figure 5 and Figure 6 As shown, in order to further improve the water-stopping effect, a water-stopping steel plate 223 can be buried inside the foamed concrete layer 221 during pouring. The water-stopping steel plate 223 is located in the middle position of the width direction of the foamed concrete layer 221, and the foamed concrete layer 221 and the rubber water-stopping rod 4 in the foamed concrete layer 221 are divided into two parts, left and right, and the left and right parts are symmetrically arranged, that is, the distribution position of the rubber water-stopping rod 4 in the left and right parts is the same.

[0054] Combine Figure 5 and Figure 6 As shown, the left and right sides of the waterstop steel plate 223 are both fitted with rubber waterstop plates 224. In the embodiment of the present application, the horizontal steel bars extending to the concrete layer 31 in the foamed concrete layer 221 need to be inserted into the rubber waterstop plate 224 and abut against the corresponding side of the waterstop steel plate 223. The waterstop steel plate and the rubber waterstop plate then form an integrated structure and play a role in preventing the spread of water seepage. The rubber waterstop plate can further seal the water seepage gap near the waterstop steel plate after swelling when exposed to water, and cooperate with the rubber waterstop rod in the foamed concrete layer to achieve a secondary water-stopping effect. At the same time, it solves the problem of water seepage that penetrates through the water seepage gap where the steel bars are located and continues to accumulate at a certain position at the waterstop steel plate.

[0055] In addition, it should be noted that the Figure 2 、 4 5 shows a water-stop structure without the water-stop steel plate 223 and the rubber water-stop plate 224. Figure 6 What is shown is a water-stop structure in which a water-stop steel plate 223 and a rubber water-stop plate 224 are arranged.

[0056] In the embodiment of the present application, the left and right side surfaces of the waterstop steel plate 223 are non-smooth surfaces. Irregular patterns may be engraved on the side surfaces of the waterstop steel plate 223, or irregular patterns may be polished on the side surfaces of the waterstop steel plate 223 to further diffuse the seepage water. After the seepage water diffuses, the contact area between the rubber waterstop plate 224 and the seepage water expands, and the rubber waterstop plate 224 can quickly expand to seal the seepage gaps, which in turn improves the effect of water seepage sealing.

[0057] Reference Figure 6 As shown, in the embodiment of the present application, the vertical cross-section of the waterstop steel plate 223 in the width direction is an isosceles trapezoid. The left and right side surfaces of the waterstop steel plate 223 are both inclined, and the upper top surface area of ​​the waterstop steel plate 223 is smaller than the lower bottom surface area. This structure is used as the waterstop steel plate 223 to improve the stability of the waterstop steel plate 223 during construction and to guide water seepage from the upper portion, where water seepage is likely to occur, downward, thereby fully utilizing the rubber waterstop plate at the lower portion.

[0058] Reference Figure 7 As shown, on the basis of the above technical solution, a hydrophobic wrapping tube 6 for wrapping the inserted end of the steel bar can also be arranged in the foamed concrete layer 221. The hydrophobic wrapping tube 6 is a polyvinyl chloride plastic tube mixed with hydrophobic silica to enhance its strength, toughness and hydrophobicity, and the hydrophobic wrapping tube 6 is a hollow pipe structure. A plurality of through holes are evenly opened on the surface of the pipe structure to form a plurality of through holes (the through holes are not shown in the figure). The through holes connect the hollow cavity of the pipe structure with the gap in the foamed concrete layer 221. The seepage water that penetrates into the foamed concrete layer 221 along the steel bar can quickly diffuse to the surrounding side through the hydrophobic wrapping tube 6, and contact with the rubber water-stopping particles through the gap in the foamed concrete layer 221, thereby achieving the purpose of rapid diffusion first and then rapid water stopping.

[0059] Reference Figure 7 As shown, the above-mentioned hydrophobic wrapping tubes 6 are arranged on both sides of the waterstop steel plate 223. The hydrophobic wrapping tubes 6 are evenly spaced along the height direction of the foamed concrete layer 221, and the hydrophobic wrapping tubes 6 are horizontally buried in the foamed concrete layer 221 and abut against the rubber waterstop plate 224 on the side of the waterstop steel plate 223.

[0060] In order to further improve the hydrophobic effect of the hydrophobic wrapping tube 6, the depth of the through hole should be shallow, and the through hole of the hydrophobic wrapping tube 6 can be filled with foamed concrete, especially the through hole facing the upper side of the hydrophobic wrapping tube 6 after being buried in the foamed concrete layer 221, so as to utilize the hydrophobic properties of the pores of the foamed concrete to improve the overall hydrophobic effect of the hydrophobic wrapping tube 6.

[0061] The embodiment of the present application also discloses a construction method of a basement advance water-stopping structure.

[0062] A construction method for a basement advance water-stopping structure comprises the following steps:

[0063] S1. Construction of waterstop foundation 1;

[0064] S1.1 Pour a concrete cushion layer in the foundation pit to obtain a foundation waterproof cushion layer 11;

[0065] S1.2 Lay a layer of waterproof rubber tape on the base waterproof cushion layer 11 as the waterproof foundation 12;

[0066] S1.3 Lay a layer of composite polyester cloth or other suitable composite waterproof membrane on the waterproof base 12 as the waterproof membrane layer 13;

[0067] S1.4 A steel reinforcement structure is laid on the waterproof membrane layer 13 and poured to form a concrete cover layer 14. Prefabricated embedding grooves 142 and connection holes 141 are formed in the concrete cover layer 14. Both the embedding grooves 142 and the connection holes 141 are formed by pouring concrete using a forming mold. The forming mold can be placed in the concrete or removed. The steel reinforcement in the concrete cover layer 14 is exposed through the connection holes 141.

[0068] S2. Construction of waterstop body 2;

[0069] S2.1 A waterproof rubber strip serving as a horizontal waterstop 21 is elastically embedded in the embedding groove 142 of the concrete cover layer 14. A positioning groove 211 is prefabricated on the horizontal waterstop 21.

[0070] S2.2 A foamed concrete layer 221 is cast in the positioning groove 211 of the horizontal waterstop 21. The integral structure composed of the waterstop steel plate 223 and the rubber waterstop plate 224 can be placed in the middle position of the casting in advance, while the foamed concrete layer 221 is cast and the horizontal waterstop rods 41 and the vertical waterstop rods 42 are fed into it, and the horizontal waterstop rods 41 and the vertical waterstop rods 42 are arranged alternately in the foamed concrete layer 221, and the vertical waterstop rods 42 are vertically in contact with the horizontal waterstop 21, and at the same time, the rubber waterstop rods 4 on both sides of the waterstop steel plate 223 are symmetrically distributed; in addition, the foamed concrete layer needs to be trimmed after casting. 221, so that the horizontal water stop rod 41 and the vertical water stop rod 42 are exposed at the end surface; if it is necessary to arrange the hydrophobic wrapped tube 6 in the foamed concrete layer 221, it is necessary to bury the hydrophobic wrapped tube 6 therein while pouring the foamed concrete layer 221, and make the hydrophobic wrapped tube 6 abut against the rubber water stop plates 224 on both sides of the water stop steel plate 223. It should be noted that when pouring the foamed concrete layer 221, the hydrophobic wrapped tube 224 should not be blocked by the foamed concrete. The open end of the hydrophobic wrapped tube 224 can be sealed in advance by a plug or the like, and the plug or other sealing device can be removed after the foamed concrete layer 221 is cast and formed;

[0071] S2.3 Adhere and fix the rubber water-stop layer 222 on the outer side of the foamed concrete layer 221, and vertically embed the rubber water-stop layer 222 in the positioning groove 211;

[0072] S3.Concrete foundation 3 construction,

[0073] S3.1 A steel structure is laid on the concrete cover 14 of the waterstop foundation 1, and the vertical steel bars in the steel structure are bent and extended and then welded to the steel bars of the concrete cover 14 through the connecting holes 141. At the same time, the horizontal steel bars in the steel structure abut against the horizontal waterstop 21 after being bent and extended, and partially extend into the rubber waterstop layer 222 of the vertical waterstop 22, and are inserted into the rubber waterstop plate 224 until they abut against the waterstop steel plate 223. It should be noted that the insertion position needs to be determined according to the pre-designed design to avoid affecting the structural characteristics of the rubber waterstop layer 222.

[0074] S3.2 Concrete is poured on the concrete cover layer 14 of the water-stop foundation 1 to obtain a concrete layer 31 , and the concrete layer 31 is divided into two left and right parts by the water-stop body 2 .

[0075] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A basement advanced water-stopping structure, characterized by: It includes a water-stop foundation (1), a water-stop body (2) and a concrete foundation (3); A water-stop foundation (1), comprising a foundation waterproof cushion layer (11); The waterstop body (2) includes a horizontal waterstop (21) laid on the base waterproof cushion layer (11), and the horizontal waterstop (21) is embedded in the waterstop foundation (1), and a vertical waterstop (22) is provided on the horizontal waterstop (21), and the vertical waterstop (22) includes a foamed concrete layer (221) and a rubber waterstop layer (222) located outside the foamed concrete layer (221); A concrete foundation (3) comprising a concrete layer (31) cast and formed on the waterstop foundation (1), wherein the vertical waterstop (22) separates the concrete layer (31) into two left and right parts; The rubber water-stop layer (222) is laid on the left and right sides of the foamed concrete layer (221); a rubber water-stop rod (4) is inserted into the foamed concrete layer (221), and the rubber water-stop rod (4) is inserted to the end surface of the foamed concrete layer (221) and exposed to the outside; The concrete layer (31) is configured as a steel-concrete structure, the steel bars of the concrete layer (31) extend to the horizontal waterstop (21), and the steel bars of the concrete layer (31) are bent and pressed downward to abut against the horizontal waterstop (21), the steel bars of the concrete layer (31) forming an abutting fit with the horizontal waterstop (21) are inserted into the rubber waterstop layer (222), and the steel bars of the concrete layer (31) inserted into the rubber waterstop layer (222) extend into the foamed concrete layer (221); The foundation waterproof cushion layer (11) is covered with a concrete covering layer (14) configured as a steel-concrete structure, a connection hole (141) is formed on the concrete covering layer (14), and the steel bars of the concrete layer (31) are welded and fixed to the steel bars in the concrete covering layer (14) via the connection hole (141); The rubber water-stop rod (4) includes a horizontal water-stop rod (41) and a vertical water-stop rod (42), and the horizontal water-stop rod (41) and the vertical water-stop rod (42) are arranged alternately; rubber water-stop particles are evenly distributed in the foamed concrete layer (221); depressions (5) are formed on the left and right sides of the foamed concrete layer (221), and the rubber water-stop layer (222) is in contact with the side surface of the foamed concrete layer (221) and partially elastically embedded in the depression (5); A mounting groove (212) is formed on the horizontal water stop (21), and the steel bars of the concrete layer (31) are bent to form an embedded fit with the mounting groove (212) of the horizontal water stop (21).

2. The basement advanced water-stopping structure according to claim 1, characterized in that: A positioning groove (211) is also formed on the horizontal waterstop (21), and the bottom end of the vertical waterstop (22) is inserted into the positioning groove (211).

3. The basement advanced water-stopping structure according to claim 1, characterized in that: The water-stop foundation (1) further comprises a waterproof foundation (12) covering the foundation waterproof cushion layer (11), and the waterproof foundation (12) is covered with a waterproof roll material layer (13), and the concrete covering layer (14) covers the waterproof roll material layer (13).

4. The basement advanced water-stopping structure according to claim 1, characterized in that: A waterstop steel plate (223) is vertically embedded in the foamed concrete layer (221), and the waterstop steel plate (223) divides the foamed concrete layer (221) and the rubber waterstop rod (4) in the foamed concrete layer (221) into two symmetrical left and right parts, and rubber waterstop plates (224) are provided on both left and right sides of the waterstop steel plate (223).

5. The basement advanced water-stopping structure according to claim 4, characterized in that: The steel bars of the concrete layer (31) extending to the foamed concrete layer (221) are inserted into the rubber waterstop plate (224) and abut against the waterstop steel plate (223), and the left and right side surfaces of the waterstop steel plate (223) are set as non-smooth surfaces.

6. The basement advanced water-stopping structure according to claim 5, characterized in that: The left and right side surfaces of the waterstop steel plate (223) are both arranged as inclined slopes, the vertical cross-section of the waterstop steel plate (223) in the width direction is trapezoidal, and the upper top surface area of ​​the waterstop steel plate (223) is smaller than the lower bottom surface area.

7. A construction method, characterized in that: The method for constructing the basement advance water-stopping structure as described in any one of claims 1 to 6 includes the following steps: S1. Construction of water-stop foundation (1): laying foundation waterproof cushion layer (11) in the foundation pit; S2. Construction of the waterstop body (2): first, laying a horizontal waterstop (21) on the waterstop foundation (1), and then laying a vertical waterstop (22) on the horizontal waterstop (21); when constructing the vertical waterstop (22), first, pouring a foamed concrete layer (221), and then bonding and fixing a rubber waterstop layer (222) on the outer side of the foamed concrete layer (221); S3. Concrete foundation (3) is constructed, and a concrete layer (31) is poured on the water-stop foundation (1). The concrete layer (31) is divided into two parts, left and right, by the water-stop body (2).

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