CN114622589A

CN114622589A - Building structure construction method using high-ductility concrete belt to replace settlement post-cast belt

Info

Publication number: CN114622589A
Application number: CN202111573658.8A
Authority: CN
Inventors: 祝文畏; 杨学林; 叶甲淳; 何炬钢; 沈米钢
Original assignee: Zhejiang Province Institute of Architectural Design and Research
Current assignee: Zhejiang Province Institute of Architectural Design and Research
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-06-14
Anticipated expiration: 2041-12-21
Also published as: CN114622589B

Abstract

The invention discloses a building structure construction method using a high-ductility concrete zone to replace a post-settlement casting zone, and aims to provide a method capable of effectively solving the problem of structural cracking caused by settlement difference between a main building and a surrounding ground reservoir structure; and the construction method of the building structure can effectively solve the problem of potential water seepage hazards of the basement possibly existing in the later stage of the building and the problem of influencing the development of the subsequent processes of the basement in the high-rise building adopting the post-cast strip in the prior art. It includes: pouring a raft plate, wherein the raft plate comprises a main building raft plate and a ground depot raft plate distributed around the main building raft plate; pouring construction of a basement floor, wherein the basement floor comprises a main building underground floor positioned above the main building raft and a basement floor positioned above the basement raft; and (4) pouring construction of a top plate of the basement, wherein the top plate of the basement comprises a main floor bottom plate positioned above the main floor underground floor slab and a basement top plate positioned above the basement floor slab.

Description

Building structure construction method using high-ductility concrete belt to replace settlement post-cast belt

Technical Field

The invention relates to the field of building structure construction, in particular to a building structure construction method for replacing a post-cast strip with a high-ductility concrete strip.

Background

In recent years, with the rapid development of urban economy in China, various high-rise buildings have been pulled out. The underground of a high-rise building is generally provided with a ground reservoir, and the problem of settlement difference exists between a main building of the high-rise building and the ground reservoir around the main building. In order to solve the problem, an annular post-cast strip is generally arranged around a main building of the existing high-rise building and is used for solving the problem of structural cracking caused by the settlement difference between the main building and the peripheral ground reservoir structure; similarly, a circle of top plate annular isolation belt is also required to be arranged around the bottom plate of the first floor of the main building to isolate the bottom plate of the first floor of the main building from the top plate of the ground warehouse; for a multi-layer basement, a circle of floor slab annular isolation belt is also required to be arranged around a main building basement floor slab in the basement to isolate the main building basement floor slab from a basement floor slab; the construction of the main structure of the main building of the building structure is completed by the annular isolation belts, and after a set time (generally 1-2 years) is passed so that the main structure of the main building is settled stably, ordinary concrete can be cast in the annular isolation belts to form annular post-cast belts, so as to connect the main building and the ground warehouse structure around the main building.

At present, the annular post-cast strip is widely applied because the problem of settlement difference between a main building of a high-rise building and a ground reservoir around the main building can be solved; however, the annular post-cast strip needs to be constructed on the main structure of the main building of the building structure, and the construction can be carried out after the main structure of the main building is settled stably for a set time (the time is generally 1 to 2 years), so that the basement structure has the problem of water inflow (rainwater leaks into the basement through the annular isolation strips) in the construction process of the main structure of the main building and within 1 to 2 years later, which causes inconvenience in basement operation and influences the development of subsequent procedures of the basement; on the other hand, the annular post-cast strip is not poured for a long time, and various construction wastes are fully accumulated, so that the annular isolation strip needs to be cleaned in advance before the annular post-cast strip is poured, the operation is inconvenient, and once the annular isolation strip is not cleaned completely, the annular post-cast strip formed by pouring is not compact, and the water seepage hidden danger exists in the later stage of the building.

Disclosure of Invention

The invention aims to provide a construction method of a building structure by using a high-ductility concrete belt to replace a post-cast strip, which can effectively solve the problem of structural cracking caused by the difference of settlement between a main building and a peripheral ground reservoir structure; the problem that the basement water seepage hidden danger possibly exists in the later stage of the building due to the fact that the high-rise building adopts the post-cast strip in the prior art and the problem that the subsequent processes of the basement are affected due to the fact that the basement enters water in the construction process of the high-rise building are solved.

The technical scheme of the invention is as follows:

a method for constructing a building structure by using a high-ductility concrete zone to replace a settlement post-cast strip is characterized in that the building structure comprises a main building and a ground reservoir, the method for constructing the building structure by using the high-ductility concrete zone to replace the settlement post-cast strip comprises the following steps,

the raft pouring construction comprises the following steps,

a1, arranging a circle of annular isolation strips around the main building raft, wherein the main building raft is positioned in the annular isolation strips;

a2, pouring common concrete to form a main building raft;

pouring common concrete into the ground depot rafts between the main building raft and the raft annular isolation belt, and pouring common concrete into the ground depot rafts outside the raft annular isolation belt;

before the common concrete of the raft of the ground depot is hardened, high-ductility concrete is poured in the annular isolation belt of the raft to form an annular high-ductility concrete raft strip, and the raft of the ground depot on two sides of the annular isolation belt of the raft are connected into a whole through the annular high-ductility concrete raft strip;

the basement floor slab pouring construction comprises a main building underground floor slab positioned above a main building raft slab and a basement floor slab positioned above a basement raft slab, and comprises the following steps,

b1, arranging a ring of floor slab annular isolation belt around the underground floor slab of the main floor, wherein the underground floor slab of the main floor is positioned in the floor slab annular isolation belt;

b2, forming the main building underground floor slab by pouring common concrete;

common concrete is poured into the ground warehouse floor between the underground floor of the main building and the annular isolation belt of the floor, and the common concrete is poured into the ground warehouse floor outside the annular isolation belt of the floor;

before common concrete of the ground depot floor slab is hardened, high-ductility concrete is poured in the annular isolation belt of the floor slab to form an annular high-ductility concrete floor slab belt, and the ground depot floor slabs on two sides of the annular isolation belt of the floor slab are connected into a whole through the annular high-ductility concrete floor slab belt;

the pouring construction of the top plate of the basement comprises a main floor plate positioned above an underground floor slab of a main floor and a basement top plate positioned above the basement floor slab, and comprises the following steps,

c1, arranging a ring of top plate annular isolation belt around the bottom plate of the main floor;

c2, pouring common concrete to form a main floor;

pouring common concrete on a top plate of a ground reservoir between a bottom plate of a main building and the annular isolation belt of the top plate, and pouring common concrete on a top plate of the ground reservoir outside the annular isolation belt of the top plate;

before the common concrete of the top plate of the ground warehouse is hardened, high-ductility concrete is poured in the annular isolation belt of the top plate to form an annular high-ductility concrete top plate belt, and the top plates of the ground warehouse at two sides of the annular isolation belt of the top plate are connected into a whole through the annular high-ductility concrete top plate belt.

The scheme is a building structure construction method by replacing a settlement post-pouring belt with a high-ductility concrete belt, and aims at a building construction method of a multi-layer basement structure. According to the scheme, the high-ductility concrete has the advantages that compared with common concrete, the high-ductility concrete has high strength, high toughness, high crack resistance, high damage resistance and the like, particularly the tensile property of the high-ductility concrete can reach 50-200 times of that of the common concrete, and the high-ductility concrete raft strip, the annular high-ductility concrete floor strip and the annular high-ductility concrete top plate strip which are formed by the high-ductility concrete are adopted to replace a post-cast strip in the prior art, so that in the raft pouring construction, the construction interval time between the main building raft, the basement raft and the high-ductility concrete raft strip is short, and after the main building raft and the basement raft are hardened, the basement rafts at two sides of the annular isolation strip can be connected into a whole through the high-ductility concrete raft strip, so that the main building raft, the basement raft and the high-ductility concrete raft are connected into a whole; similarly, after the basement floor slab is hardened on the underground floor slab of the main building and the basement floor slab, the underground floor slab of the main building, the basement floor slab and the annular high-ductility concrete floor slab are connected into a whole; after the basement top plate is hardened on the basement top plate and the main floor bottom plate, the basement top plate, the main floor bottom plate and the annular high-ductility concrete top plate are connected into a whole; thereby effectively solve the high-rise building among the prior art and adopt post-cast strip construction, the basement that exists among the high-rise building construction process of existence intakes, and influence the problem of developing of basement subsequent handling to and need clear up and do not pour for a long time because of annular post-cast strip, and pile up various building rubbish, and in case annular median clearance unclean probably leads to pouring the annular post-cast strip that forms not closely, and lead to the building later stage to have the problem of infiltration hidden danger. Meanwhile, the settlement difference deformation possibly generated by the main building and the peripheral basement structure occurs at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band), so that the problem of structural cracking caused by the settlement difference between the main building and the peripheral basement structure is effectively solved, and the cracking and the damage of the basement structure caused by the settlement difference are avoided.

Preferably, a plurality of floor beams for supporting the floor slab of the warehouse are arranged below the floor slab of the warehouse, wherein part of the floor beams are intersected with the annular high-ductility concrete floor slab band, the part of the floor beams intersected with the annular high-ductility concrete floor slab band comprises an inner floor beam section positioned on the inner side of the annular high-ductility concrete floor slab band, a main floor beam section positioned on the outer side of the annular high-ductility concrete floor slab band and a floor connecting beam for connecting the inner floor beam section and the main floor beam section, the inner floor beam section and the main floor beam section are formed by pouring common concrete, and the floor connecting beam is formed by pouring high-ductility concrete;

the underground garage roof is provided with a plurality of roof beams for supporting the underground garage roof, wherein part of the roof beams are intersected with the annular high-ductility concrete roof belt, the part of the roof beams intersected with the annular high-ductility concrete roof belt comprise inner roof beam sections positioned on the inner side of the annular high-ductility concrete roof belt, main roof beam sections positioned on the outer side of the annular high-ductility concrete roof belt and roof connecting beams for connecting the inner roof beam sections and the main roof beam sections, the inner roof beam sections and the main roof beam sections are formed by common concrete pouring, and the roof connecting beams are formed by high-ductility concrete pouring. Therefore, the settlement difference deformation possibly generated by the main floor and the peripheral warehouse structure can be further ensured to appear at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete slab band and the annular high-ductility concrete roof slab band), the settlement difference deformation possibly generated by the main floor and the peripheral warehouse structure is prevented from being transmitted to the warehouse floor slab outside the annular high-ductility concrete slab band through the floor beam intersected with the annular high-ductility concrete slab band, and transmitted to the warehouse floor slab outside the annular high-ductility concrete slab band through the roof beam intersected with the annular high-ductility concrete roof slab band, and the problem of structural cracking caused by the settlement difference between the main floor and the peripheral warehouse structure is effectively solved.

Preferably, the inner floor beam section and the main floor beam section are synchronously cast in the process of casting the ground depot floor slab in the step B2;

in the step B2, when the annular high-ductility concrete floor slab band is poured, a floor slab preformed hole is preset at the annular high-ductility concrete floor slab band crossed with the floor slab beam and penetrates through the upper surface and the lower surface of the annular high-ductility concrete floor slab band;

and after the main structure of the main building of the building structure is constructed and constructed, setting time again so that the main structure of the main building is settled stably, arranging a template below the annular high-ductility concrete floor slab band and forming a floor slab connecting beam casting cavity in the template, and then casting high-ductility concrete into the floor slab connecting beam casting cavity through the floor slab preformed hole to form a floor slab connecting beam for connecting the inner floor slab beam section and the main floor slab beam section.

In the scheme, the inner floor beam section and the main floor beam section are formed in the process of pouring the ground warehouse floor in the step B2, the construction of the floor connecting beam on the main structure of the main building of the building structure is completed, and after the main structure of the main building is settled and stabilized for a set time, the construction is carried out by adopting high-ductility concrete casting; therefore, in the process of main structure construction of the main building, the structural bearing capacity of the ground warehouse floor is ensured through the inner floor beam section and the main floor beam section, the condition that the settlement difference deformation possibly generated by the main building and the peripheral ground warehouse structure is transmitted to the ground warehouse floor except the annular high-ductility concrete floor strip through the floor beam intersected with the annular high-ductility concrete floor strip can be avoided, and the settlement difference deformation possibly generated by the main building and the peripheral ground warehouse structure is further ensured to be generated at the annular high-ductility concrete floor strip.

Preferably, the inner roof beam section and the main roof beam section are synchronously cast in the process of casting the top plate of the basement in the step C2;

in the step C2, when the annular high-ductility concrete roof slab band is poured, a roof slab preformed hole is preset at the annular high-ductility concrete roof slab band which is intersected with the roof beam, and the roof slab preformed hole penetrates through the upper surface and the lower surface of the annular high-ductility concrete roof slab band;

the main structure construction of the main building of the building structure is completed, and the construction is performed within a set time so that after the main structure of the main building is settled stably, the template is arranged below the annular high-ductility concrete roof strip, the roof connecting beam casting cavity is formed in the template, and then the high-ductility concrete is cast in the roof connecting beam casting cavity through the roof preformed hole to form a roof connecting beam section for connecting the inner roof beam section and the main roof beam section.

In the scheme, the inner top plate beam section and the main top plate beam section are formed in the process of pouring the floor slab of the basement in the step C2, the construction of the top plate connecting beam section on the main structure of the main building of the building structure is completed, and after the main structure of the main building is settled and stabilized through set time, the main structure is formed through high-ductility concrete casting construction; therefore, the structural bearing capacity of the top plate of the basement can be guaranteed through the inner top plate beam section and the main top plate beam section in the main structure construction process of the main building, the settlement difference deformation possibly generated between the main building and the peripheral basement structure can be prevented from being transmitted to the top plate of the basement except the annular high-ductility concrete floor plate strip through the top plate beam intersected with the annular high-ductility concrete floor plate strip, and the settlement difference deformation possibly generated between the main building and the peripheral basement structure can be further guaranteed to be generated at the annular high-ductility concrete roof strip.

Preferably, the annular isolation belt of the top plate is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh; the floor slab annular isolation belt is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh; the top plate annular isolation belt is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh. In this way, before the annular high-ductility concrete raft belt is formed by casting high-ductility concrete in the raft annular isolation belt, the annular high-ductility concrete raft belt can be directly cast without disassembling the raft annular isolation belt (the annular steel wire mesh can be directly embedded in the high-ductility concrete); similarly, before the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band are formed by adopting high-ductility concrete pouring, the annular isolation band of the floor slab and the annular isolation band of the fixed plate do not need to be disassembled, and the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band can be directly poured.

Preferably, the thickness of the annular high-ductility concrete raft strip is smaller than that of the basement raft plate, the difference between the thickness of the annular high-ductility concrete raft strip and that of the basement raft plate is 10-30 cm, the thickness of the annular high-ductility concrete floor strip is smaller than that of the basement floor plate, and the thickness of the annular high-ductility concrete roof strip is smaller than that of the basement roof plate.

A method for constructing a building structure by replacing a settlement post-cast strip with a high-ductility concrete strip comprises the following steps,

the raft pouring construction comprises the following steps,

a1, arranging a circle of raft annular isolation belt around a main building raft, wherein the main building raft is positioned in the raft annular isolation belt;

a2, pouring common concrete to form a main building raft;

before the common concrete of the raft of the reservoir is hardened, casting high-ductility concrete in the annular isolation belt of the raft to form an annular high-ductility concrete raft strip, and connecting the raft of the reservoir at two sides of the annular isolation belt of the raft into a whole through the annular high-ductility concrete raft strip;

the pouring construction of the basement top plate comprises a main floor plate positioned above a main building raft plate and a basement top plate positioned above the basement raft plate, and comprises the following steps,

c2, pouring common concrete to form a main floor;

common concrete is adopted to pour the top plate of the basement between the bottom plate of the main building and the annular isolation belt of the top plate, and the top plate of the basement outside the annular isolation belt of the top plate is poured by the common concrete;

The construction method of the building structure using the high-ductility concrete belt to replace the post-cast settlement belt aims at the construction method of the building with only one basement structure. According to the scheme, the high-ductility concrete has the advantages that compared with common concrete, the high-ductility concrete has high strength, high toughness, high crack resistance, high damage resistance and the like, particularly the tensile property of the high-ductility concrete can reach 50-200 times of that of the common concrete, and the high-ductility concrete raft strip, the annular high-ductility concrete floor strip and the annular high-ductility concrete top plate strip which are formed by the high-ductility concrete are adopted to replace a post-cast strip in the prior art, so that in the raft pouring construction, the construction interval time between the main building raft, the basement raft and the high-ductility concrete raft strip is short, and after the main building raft and the basement raft are hardened, the basement rafts at two sides of the annular isolation strip can be connected into a whole through the high-ductility concrete raft strip, so that the main building raft, the basement raft and the high-ductility concrete raft are connected into a whole; similarly, after the basement top plate is hardened, the basement top plate, the main floor bottom plate and the annular high-ductility concrete top plate are connected into a whole; thereby effectively solve the high-rise building among the prior art and adopt post-cast strip construction, the basement that exists among the high-rise building construction process of existence intakes, and influence the problem of developing of basement subsequent handling to and need clear up and do not pour for a long time because of annular post-cast strip, and pile up various building rubbish, and in case annular median clearance unclean probably leads to pouring the annular post-cast strip that forms not closely, and lead to the building later stage to have the problem of infiltration hidden danger. Meanwhile, the settlement difference deformation possibly generated by the main building and the peripheral basement structure occurs at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band), so that the problem of structural cracking caused by the settlement difference between the main building and the peripheral basement structure is effectively solved, and the cracking and the damage of the basement structure caused by the settlement difference are avoided.

Preferably, a plurality of roof beams for supporting the top plate of the ground reservoir are arranged below the top plate of the ground reservoir, wherein part of the roof beams are intersected with the annular high-ductility concrete top plate band, the part of the roof beams intersected with the annular high-ductility concrete top plate band comprise inner roof beam sections positioned on the inner side of the annular high-ductility concrete top plate band, main roof beam sections positioned on the outer side of the annular high-ductility concrete top plate band and roof connecting beams for connecting the inner roof beam sections and the main roof beam sections, the inner roof beam sections and the main roof beam sections are formed by pouring common concrete, and the roof connecting beams are formed by pouring high-ductility concrete.

in the step C2, when the annular high-ductility concrete roof strip is poured, a roof preformed hole is preset at the annular high-ductility concrete roof strip which is intersected with the roof beam, and the roof preformed hole penetrates through the upper surface and the lower surface of the annular high-ductility concrete roof strip;

Preferably, in the step a1, an inner ring steel wire mesh and an outer ring steel wire mesh are arranged between the main building raft and the basement raft, so that the raft annular isolation belt is formed between the inner ring steel wire mesh and the outer ring steel wire mesh in the step a 1;

in the step C1, an inner ring steel wire mesh and an outer ring steel wire mesh are arranged between the annular top plate and the main top plate, so that the top plate annular isolation belt is formed between the inner ring steel wire mesh and the outer ring steel wire mesh in the step C1.

The invention has the beneficial effects that: the problem of structural cracking caused by the settlement difference between the main building and the surrounding ground reservoir structure can be effectively solved; the problem that the basement water seepage hidden danger possibly exists in the later stage of the building due to the fact that the high-rise building adopts the post-cast strip in the prior art and the problem that the subsequent processes of the basement are affected due to the fact that the basement enters water in the construction process of the high-rise building are solved.

Drawings

Fig. 1 is a schematic view of a structure of a building in which a high-ductility concrete strip is used instead of a settled post-cast strip according to a first embodiment of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a partial sectional view of a building structure using a high ductility concrete strip instead of a settled post-cast strip according to a first embodiment of the present invention.

In the figure:

a main building 1;

a ground reservoir 2;

a main building raft 3.1, a ground depot raft 3.2 and an annular high-ductility concrete raft belt 3.3;

4.1 of an underground floor slab of a main building, 4.2 of a ground depot floor slab, 4.3 of an annular high-ductility concrete floor slab band, 4.4 of a floor slab beam, 4.41 of an inner floor slab beam section, 4.42 of a main floor slab beam section and 4.43 of a floor slab connecting beam;

the high-ductility concrete roof structure comprises a main floor bottom plate 5.1, a ground warehouse roof plate 5.2, an annular high-ductility concrete roof plate strip 5.3, a roof beam 5.4, an inner roof beam section 5.41, a main roof beam section 5.42 and a roof connecting beam 5.43.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.

These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows: as shown in fig. 1, 2 and 3, a method for constructing a building structure using a high-ductility concrete strip instead of a post-cast strip includes a main building 1 and a basement 2. Herein, the floor of the main floor means the floor of the first floor of the main floor.

The construction method of the building structure using the high-ductility concrete strip instead of the post-cast strip comprises the following steps,

the raft pouring construction comprises a main building raft 3.1 and ground depot rafts 3.2 distributed around the main building raft, the raft pouring construction comprises the following steps,

a2, pouring common concrete to form a main building raft 3.1; pouring common concrete into the ground depot rafts 3.2 between the main building raft and the raft annular isolation belt, and pouring common concrete into the ground depot rafts 3.2 outside the raft annular isolation belt;

before the common concrete of the raft of the ground depot is hardened, high-ductility concrete is poured in the annular isolation belt of the raft to form an annular high-ductility concrete raft belt 3.3, and the raft of the ground depot on two sides of the annular isolation belt of the raft is connected into a whole through the annular high-ductility concrete raft belt.

The pouring construction of the basement floor comprises a main building underground floor 4.1 positioned above the main building raft and a basement floor 4.2 positioned above the basement raft, the pouring construction of the basement floor comprises the following steps,

b2, forming a main building underground floor slab 4.1 by pouring common concrete; common concrete is poured into a ground depot floor slab 4.2 between the underground floor slab of the main building and the annular isolation belt of the floor slab, and the common concrete is poured into a ground depot floor slab 4.2 outside the annular isolation belt of the floor slab;

before the common concrete of the ground depot floor slab is hardened, high-ductility concrete is poured in the annular isolation zone of the floor slab to form an annular high-ductility concrete floor slab band 4.3, and the ground depot floor slabs on two sides of the annular isolation zone of the floor slab are connected into a whole through the annular high-ductility concrete floor slab band.

The pouring construction of the top plate of the basement comprises a main floor bottom plate 5.1 positioned above the underground floor of the main building and a basement top plate 5.2 positioned above the basement floor, and comprises the following steps,

c2, pouring common concrete to form a main floor bottom plate 5.1; pouring common concrete into a top plate 5.2 of the ground warehouse between the bottom plate of the main building and the annular isolation belt of the top plate, and pouring common concrete into a top plate 5.2 of the ground warehouse outside the annular isolation belt of the top plate;

before the common concrete of the top plate of the ground warehouse is hardened, high-ductility concrete is poured in the annular isolation belt of the top plate to form an annular high-ductility concrete top plate belt 5.3, and the top plates of the ground warehouse at two sides of the annular isolation belt of the top plate are connected into a whole through the annular high-ductility concrete top plate belt.

The building structure construction method of the embodiment, which replaces the post-cast strip with the high-ductility concrete strip, is directed to a building construction method of a multi-layer basement structure. According to the scheme, the high-ductility concrete has the characteristics of high strength, high toughness, high crack resistance, high damage resistance and the like compared with common concrete, particularly the tensile property of the high-ductility concrete can reach 50-200 times of that of the common concrete, and the high-ductility concrete raft strip, the annular high-ductility concrete floor strip and the annular high-ductility concrete roof strip which are formed by the high-ductility concrete are adopted to replace a post-cast strip in the prior art, so that in raft pouring construction, the construction interval time of the main building raft, the basement raft and the high-ductility concrete raft strip is short, and after the main building raft and the basement raft are hardened, the basement rafts on two sides of the annular isolation strip of the raft can be connected into a whole through the high-ductility concrete strip, so that the main building raft, the basement raft and the high-ductility concrete raft are connected into a whole; similarly, after the basement floor slab is hardened on the underground floor slab of the main floor and the basement floor slab, the underground floor slab of the main floor, the basement floor slab and the annular high-ductility concrete floor slab are connected into a whole; after the basement top plate is hardened on the basement top plate and the main floor bottom plate, the basement top plate, the main floor bottom plate and the annular high-ductility concrete top plate are connected into a whole; therefore, the problem that the subsequent processes of the basement are affected due to the fact that the basement enters water in the high-rise building construction process in the prior art due to the fact that the high-rise building adopts post-cast strip construction is effectively solved, the problem that various building wastes are fully accumulated due to the fact that the annular post-cast strip is not poured for a long time and once the annular isolation strip is not completely cleaned, the annular post-cast strip formed by pouring is not compact and water seepage hidden dangers exist in the later stage of the building are caused to be solved. Meanwhile, the settlement difference deformation possibly generated by the main building and the peripheral basement structure occurs at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band), so that the problem of structural cracking caused by the settlement difference between the main building and the peripheral basement structure is effectively solved, and the cracking and the damage of the basement structure caused by the settlement difference are avoided.

In this embodiment, a steel bar net is embedded in the raft of the ground reservoir, and the steel bar net penetrates through the annular isolation belt of the raft. A reinforcing mesh is also embedded in the floor slab of the ground reservoir, and the reinforcing mesh penetrates through the annular isolation belt of the floor slab. And a steel bar mesh is also embedded in the top plate of the ground reservoir and penetrates through the annular isolation belt of the top plate.

Further, as shown in fig. 3, a plurality of floor beams 4.4 for supporting the floor of the basement are arranged below the floor of the basement, wherein a part of the floor beams intersects with the annular high-ductility concrete floor strip, and the part of the floor beams intersecting with the annular high-ductility concrete floor strip comprises an inner floor beam section 4.41 positioned on the inner side of the annular high-ductility concrete floor strip, a main floor beam section 4.42 positioned on the outer side of the annular high-ductility concrete floor strip, and a floor connecting beam 4.43 connecting the inner floor beam section and the main floor beam section. The inner floor beam section and the main floor beam section are both formed by pouring common concrete, and the floor connecting beam is formed by pouring high-ductility concrete.

The lower side of the top plate of the ground warehouse is provided with a plurality of top plate beams 5.4 used for supporting the top plate of the ground warehouse, wherein part of the top plate beams are intersected with the annular high-ductility concrete top plate band, and the part of the top plate beams intersected with the annular high-ductility concrete top plate band comprise inner top plate beam sections 5.41 positioned on the inner side of the annular high-ductility concrete top plate band, main top plate beam sections 5.42 positioned on the outer side of the annular high-ductility concrete top plate band and top plate connecting beams 5.43 connecting the inner top plate beam sections and the main top plate beam sections. The inner roof beam section and the main roof beam section are formed by pouring common concrete, and the roof connecting beam is formed by pouring high-ductility concrete. Therefore, the settlement difference deformation possibly generated by the main floor and the peripheral warehouse structure can be further ensured to appear at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete slab band and the annular high-ductility concrete roof slab band), the settlement difference deformation possibly generated by the main floor and the peripheral warehouse structure is prevented from being transmitted to the warehouse floor slab outside the annular high-ductility concrete slab band through the floor beam intersected with the annular high-ductility concrete slab band, and transmitted to the warehouse floor slab outside the annular high-ductility concrete slab band through the roof beam intersected with the annular high-ductility concrete roof slab band, and the problem of structural cracking caused by the settlement difference between the main floor and the peripheral warehouse structure is effectively solved.

Further, the inner floor beam section and the main floor beam section are synchronously cast in the process of casting the ground storehouse floor slab in the step B2. And B2, when the annular high-ductility concrete floor slab band is poured, presetting floor slab preformed holes at the annular high-ductility concrete floor slab band crossed with the floor slab beam, wherein the floor slab preformed holes penetrate through the upper surface and the lower surface of the annular high-ductility concrete floor slab band. The construction of the main structure of the main building of the building structure is completed, and the construction is performed for a set time so that after the main structure of the main building is settled stably, the template is arranged below the annular high-ductility concrete floor slab band, the floor slab connecting beam casting cavity is formed in the template, and then the high-ductility concrete is cast into the floor slab connecting beam casting cavity through the floor slab preformed hole so as to form the floor slab connecting beam for connecting the inner floor slab beam section and the main floor slab beam section. In the process of pouring the floor slab of the warehouse in the step B2, the inner floor slab beam section and the main floor slab beam section in the embodiment are formed by adopting high-ductility concrete casting construction after the main structure of the main building of the building structure is settled stably for a set time; therefore, in the process of main structure construction of the main building, the structural bearing capacity of the ground warehouse floor is ensured through the inner floor beam section and the main floor beam section, the condition that the settlement difference deformation possibly generated by the main building and the peripheral ground warehouse structure is transmitted to the ground warehouse floor except the annular high-ductility concrete floor strip through the floor beam intersected with the annular high-ductility concrete floor strip can be avoided, and the settlement difference deformation possibly generated by the main building and the peripheral ground warehouse structure is further ensured to be generated at the annular high-ductility concrete floor strip.

And synchronously pouring the inner roof girder section and the main roof girder section in the process of pouring the top plate of the basement in the step C2. And C2, when the annular high-ductility concrete roof slab band is poured, presetting roof slab preformed holes at the annular high-ductility concrete roof slab band crossed with the roof beam, wherein the roof slab preformed holes penetrate through the upper surface and the lower surface of the annular high-ductility concrete roof slab band. The main structure construction of the main building of the building structure is completed, and the construction is performed within a set time so that after the main structure of the main building is settled stably, the template is arranged below the annular high-ductility concrete roof strip, the roof connecting beam casting cavity is formed in the template, and then the high-ductility concrete is cast in the roof connecting beam casting cavity through the roof preformed hole to form a roof connecting beam section for connecting the inner roof beam section and the main roof beam section. In the process of pouring the floor slab of the basement in the step C2, the roof connecting beam sections are constructed on the main structure of the main building of the building structure, and after the main structure of the main building is settled and stabilized for a set time, the inner roof beam sections and the main roof beam sections are formed by high-ductility concrete casting construction; therefore, the structural bearing capacity of the top plate of the basement can be guaranteed through the inner top plate beam section and the main top plate beam section in the main structure construction process of the main building, the settlement difference deformation possibly generated between the main building and the peripheral basement structure can be prevented from being transmitted to the top plate of the basement except the annular high-ductility concrete floor plate strip through the top plate beam intersected with the annular high-ductility concrete floor plate strip, and the settlement difference deformation possibly generated between the main building and the peripheral basement structure can be further guaranteed to be generated at the annular high-ductility concrete roof strip.

Further, the top plate annular isolation belt is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh; the floor slab annular isolation belt is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh; the top plate annular isolation belt is composed of an inner ring of annular steel wire mesh and an outer ring of annular steel wire mesh. In this way, before the annular high-ductility concrete raft belt is formed by casting high-ductility concrete in the raft annular isolation belt, the annular high-ductility concrete raft belt can be directly cast without disassembling the raft annular isolation belt (the annular steel wire mesh can be directly embedded in the high-ductility concrete); in a similar way, before the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof plate band are formed by adopting high-ductility concrete pouring, the annular isolation band of the floor slab and the annular isolation band of the fixed plate do not need to be disassembled, and the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof plate band can be directly poured. In this embodiment, the annular steel wire mesh is a dense mesh steel wire mesh.

Furthermore, the thickness of the annular high-ductility concrete raft plate is smaller than that of the basement raft plate, and the difference between the thickness of the annular high-ductility concrete raft plate and that of the basement raft plate is 10 cm or 20 cm or 30 cm. The width of the annular high-ductility concrete raft plate strip is 50-150 cm. The thickness of the annular high-ductility concrete floor slab band is smaller than that of the basement floor slab, and the width of the annular high-ductility concrete floor slab band is 50-150 cm. The thickness of the annular high-ductility concrete top plate strip is smaller than that of the basement top plate, and the width of the annular high-ductility concrete top plate strip is 50-150 cm.

The second embodiment is as follows: a method for constructing building structure by using high-ductility concrete belt instead of post-cast strip includes such steps as building and basement.

The construction method of the building structure using the high-ductility concrete strip instead of the settled post-cast strip comprises the following steps,

the raft pouring construction comprises the following steps,

a2, pouring common concrete to form a main building raft; pouring common concrete into the ground depot rafts between the main building raft and the raft annular isolation belt, and pouring common concrete into the ground depot rafts outside the raft annular isolation belt;

before the common concrete of the raft of the reservoir is hardened, high-ductility concrete is poured in the annular isolation belt of the raft to form an annular high-ductility concrete raft belt, and the raft of the reservoir on two sides of the annular isolation belt of the raft is connected into a whole through the annular high-ductility concrete raft belt.

The pouring construction of the basement top plate comprises a main building bottom plate positioned above the main building raft plate and a basement top plate positioned above the basement raft plate, and comprises the following steps,

c2, pouring common concrete to form a main floor; pouring common concrete on a top plate of a ground reservoir between a bottom plate of a main building and the annular isolation belt of the top plate, and pouring common concrete on a top plate of the ground reservoir outside the annular isolation belt of the top plate;

The scheme is a building structure construction method by replacing a settlement post-pouring belt with a high-ductility concrete belt, and aims at a building construction method with only one layer of basement structure.

According to the scheme, the high-ductility concrete has the advantages that compared with common concrete, the high-ductility concrete has high strength, high toughness, high crack resistance, high damage resistance and the like, particularly the tensile property of the high-ductility concrete can reach 50-200 times of that of the common concrete, and the high-ductility concrete raft strip, the annular high-ductility concrete floor strip and the annular high-ductility concrete top plate strip which are formed by the high-ductility concrete are adopted to replace a post-cast strip in the prior art, so that in the raft pouring construction, the construction interval time between the main building raft, the basement raft and the high-ductility concrete raft strip is short, and after the main building raft and the basement raft are hardened, the basement rafts at two sides of the annular isolation strip can be connected into a whole through the high-ductility concrete raft strip, so that the main building raft, the basement raft and the high-ductility concrete raft are connected into a whole; similarly, after the basement top plate is hardened, the basement top plate, the main floor bottom plate and the annular high-ductility concrete top plate are connected into a whole; therefore, the problem that the subsequent processes of the basement are affected due to the fact that the basement enters water in the high-rise building construction process in the prior art due to the fact that the high-rise building adopts post-cast strip construction is effectively solved, the problem that various building wastes are fully accumulated due to the fact that the annular post-cast strip is not poured for a long time and once the annular isolation strip is not completely cleaned, the annular post-cast strip formed by pouring is not compact and water seepage hidden dangers exist in the later stage of the building are caused to be solved. Meanwhile, the settlement difference deformation possibly generated by the main building and the peripheral basement structure occurs at the annular high-ductility concrete slab band (namely, the high-ductility concrete raft slab band, the annular high-ductility concrete floor slab band and the annular high-ductility concrete roof slab band), so that the problem of structural cracking caused by the settlement difference between the main building and the peripheral basement structure is effectively solved, and the cracking and the damage of the basement structure caused by the settlement difference are avoided.

Furthermore, a plurality of roof beams used for supporting the top plate of the ground warehouse are arranged below the top plate of the ground warehouse, wherein part of the roof beams are intersected with the annular high-ductility concrete top plate belt, the part of the roof beams intersected with the annular high-ductility concrete top plate belt comprise inner roof beam sections positioned on the inner side of the annular high-ductility concrete top plate belt, main roof beam sections positioned on the outer side of the annular high-ductility concrete top plate belt and roof connecting beams for connecting the inner roof beam sections and the main roof beam sections, the inner roof beam sections and the main roof beam sections are formed by pouring common concrete, and the roof connecting beams are formed by pouring high-ductility concrete.

And synchronously pouring the inner roof girder section and the main roof girder section in the process of pouring the top plate of the basement in the step C2. And C2, when the annular high-ductility concrete roof slab band is poured, presetting roof slab preformed holes at the annular high-ductility concrete roof slab band crossed with the roof beam, wherein the roof slab preformed holes penetrate through the upper surface and the lower surface of the annular high-ductility concrete roof slab band. The major structure construction of the main building of building structure is accomplished, again through the settlement time to make the major structure of main building subside stably the back, set up the template and form the roof tie-beam casting chamber in the template in the below of annular high-ductility concrete roof strip, then through the roof preformed hole toward the interior high-ductility concrete of roof tie-beam casting chamber casting, in order to form the roof tie-beam section of connecting interior roof beam section and main roof beam section.

In the step A1, an inner ring steel wire mesh and an outer ring steel wire mesh are arranged between the main building raft and the ground depot raft, so that the raft annular isolation belt is formed between the inner ring steel wire mesh and the outer ring steel wire mesh in the step A1. And in the step C1, an inner ring steel wire mesh and an outer ring steel wire mesh are arranged between the annular top plate and the main top plate, so that the top plate annular isolation belt is formed between the inner ring steel wire mesh and the outer ring steel wire mesh in the step C1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A method for constructing a building structure by using a high-ductility concrete zone to replace a settlement post-cast strip is characterized in that the building structure comprises a main building and a ground reservoir, the method for constructing the building structure by using the high-ductility concrete zone to replace the settlement post-cast strip comprises the following steps,

the raft pouring construction comprises the following steps,

a2, pouring common concrete to form a main building raft;

c2, pouring common concrete to form a main floor;

2. The method of constructing a building structure according to claim 1, wherein a plurality of floor beams for supporting the floor of the basement are provided under the floor of the basement, wherein some of the floor beams intersect the annular high-ductility concrete floor strip, and the part of the floor beams intersecting the annular high-ductility concrete floor strip includes an inner floor beam section located inside the annular high-ductility concrete floor strip, a main floor beam section located outside the annular high-ductility concrete floor strip, and a floor connecting beam connecting the inner floor beam section and the main floor beam section, wherein the inner floor beam section and the main floor beam section are formed by casting of common concrete, and the floor connecting beam is formed by casting of high-ductility concrete;

the underground garage roof is provided with a plurality of roof beams for supporting the underground garage roof, wherein part of the roof beams are intersected with the annular high-ductility concrete roof belt, the part of the roof beams intersected with the annular high-ductility concrete roof belt comprise inner roof beam sections positioned on the inner side of the annular high-ductility concrete roof belt, main roof beam sections positioned on the outer side of the annular high-ductility concrete roof belt and roof connecting beams for connecting the inner roof beam sections and the main roof beam sections, the inner roof beam sections and the main roof beam sections are formed by common concrete pouring, and the roof connecting beams are formed by high-ductility concrete pouring.

3. The method of constructing a building structure according to claim 2, wherein the inner floor beam section and the main floor beam section are cast simultaneously during the process of casting the basement floor in step B2;

the construction of the main structure of the main building of the building structure is completed, and the construction is performed for a set time so that after the main structure of the main building is settled stably, the template is arranged below the annular high-ductility concrete floor slab band, the floor slab connecting beam casting cavity is formed in the template, and then the high-ductility concrete is cast into the floor slab connecting beam casting cavity through the floor slab preformed hole so as to form the floor slab connecting beam for connecting the inner floor slab beam section and the main floor slab beam section.

4. The method of constructing a building structure according to claim 2, wherein the inner roof girder section and the main roof girder section are simultaneously cast during the process of casting the ceiling of the basement in the step C2;

5. The method of constructing a building structure using a high ductility concrete strip instead of a post-cast strip as claimed in claim 1, wherein the top plate endless partitioning strip is formed of inner and outer rings of endless steel wire mesh.

6. The method of constructing a building structure using a high ductility concrete strip instead of a post-cast strip as claimed in claim 1, wherein the floor slab annular isolation strip is formed of inner and outer rings of steel wire mesh.

7. The method of constructing a building structure using a high ductility concrete strip instead of a post-cast strip as claimed in claim 1, wherein the top plate endless partitioning strip is formed of inner and outer rings of endless steel wire mesh.

8. A method for constructing a building structure by using a high-ductility concrete zone to replace a settlement post-cast strip is characterized in that the building structure comprises a main building and a ground reservoir, the method for constructing the building structure by using the high-ductility concrete zone to replace the settlement post-cast strip comprises the following steps,

the raft pouring construction comprises the following steps,

a2, pouring common concrete to form a main building raft;

c2, pouring common concrete to form a main floor;

9. The method as claimed in claim 8, wherein a plurality of roof beams for supporting the ceiling of the basement are provided under the ceiling of the basement, wherein a portion of the roof beams intersects the annular high-ductility concrete ceiling strip, the portion of the roof beams intersecting the annular high-ductility concrete ceiling strip includes inner roof beam sections located inside the annular high-ductility concrete ceiling strip, main roof beam sections located outside the annular high-ductility concrete ceiling strip, and roof connecting beams connecting the inner roof beam sections and the main roof beam sections, the inner roof beam sections and the main roof beam sections are formed by casting of common concrete, and the roof connecting beams are formed by casting of high-ductility concrete.

10. The method of constructing a building structure according to claim 9, wherein the inner roof girder section and the main roof girder section are simultaneously cast during the process of casting the ceiling of the basement in the step C2;