CN111456249A

CN111456249A - Detachable assembly type composite building

Info

Publication number: CN111456249A
Application number: CN202010331926.4A
Authority: CN
Inventors: 王卫永
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-07-28

Abstract

The invention provides a detachable assembled composite building. The house is assembled by adopting a foundation, a beam column supporting frame, a wall body, a floor slab and a roof truss in a modularized combination manner. The foundation is spliced by adopting prefabricated foundation standard modules. The prefabricated foundation standard module divides the foundation into a plurality of compartments which are connected one by one. The compartment is integrally a rectangular frame with four base beams. And the compartments are connected and fixed through opposite-pulling prestressed steel pipes. Connecting pieces are embedded in the four corners of the compartment on the upper surface of the foundation. The roof truss is arranged on the top of the beam column supporting frame. The house is formed by directly assembling the lower foundation and the upper roof truss in a factory on site, and the floor slab, the wall body and the beam column are connected into a whole, so that the floor slab is prevented from moving laterally when the structure is stressed, the integral stress performance and safety of the house are improved, the assembling speed is high, and the environment comfort level is better.

Description

Detachable assembly type composite building

Technical Field

The invention relates to the field of buildings, in particular to a combined house.

Background

Most rural residences are formed by casting solid bricks and concrete in situ, which wastes labor, time and environment, generates more waste materials, has high construction cost and poor living environment, and most of the building floors are directly placed on the beam by prefabricated plates without reliable connection, so that the overall stress performance of the structure is poor, and the like. Therefore, there is a need to develop an integrally fabricated building.

Disclosure of Invention

The invention aims to provide a detachable and assembled composite building to solve the problems in the prior art.

The technical scheme adopted for achieving the aim of the invention is that the detachable assembly type composite building comprises a prefabricated wall standard module, a prefabricated floor standard module and a beam column supporting framework.

The prefabricated wall body standard module comprises a prefabricated outer wall standard module and a prefabricated inner wall standard module. The prefabricated interior wall standard module divides the interior of the building into a plurality of rooms.

The prefabricated outer wall standard module comprises a steel support frame, a concrete coating layer and a sealing plate. The steel support frame is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. And the upper surface, the lower surface, the first end surface and the second end surface of the steel support frame are provided with a plurality of through holes. And the steel support frame is welded with a threaded sleeve used for being jointed with the beam-column support frame at the position of the through hole. The threaded sleeve is located in the semi-enclosed space S. The steel supporting frame is embedded between the steel bar net piece and the sealing plate. And the contact parts of the closing plate and the steel support frame are connected by self-tapping screws. And the concrete coating layer wraps the wall surface on one side of the steel support frame. And a gap is formed between the closing plate and the concrete coating layer. And the gap is filled with heat insulation materials.

The prefabricated interior wall standard module comprises a steel support frame embedded between two sealing plates. The steel support frame is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. And the upper surface, the lower surface, the first end surface and the second end surface of the steel support frame are provided with a plurality of through holes for being connected with the precast floor slab standard module and the beam column support frame. And the contact parts of the closing plate and the steel support frame are connected by self-tapping screws. And the semi-enclosed space S is filled with heat insulation materials.

The beam-column supporting frame comprises a vertically arranged steel column and a steel beam vertically connected with the steel column. And the prefabricated external wall standard module and the prefabricated floor slab standard module are arranged in the erected beam column supporting frame. And the prefabricated floor slab standard modules are combined into a foundation slab, a floor slab or a roof slab of a house. The prefabricated interior wall standard modules are arranged on the prefabricated floor slab standard modules. And the prefabricated external wall standard module is connected with the steel column or the steel beam by adopting a bolt. And the prefabricated inner wall standard module is connected with the prefabricated floor slab standard module, the steel column or the steel beam by bolts.

The invention also discloses a detachable assembly type composite building which comprises the prefabricated wall standard module, the prefabricated floor standard module and the beam column supporting frame.

The prefabricated outer wall standard module comprises a steel support frame, a concrete coating layer and a sealing plate. The steel support frame is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. And the upper surface, the lower surface, the first end surface and the second end surface of the steel supporting frame are provided with a plurality of through holes for being connected with a foundation, a steel column or a steel beam. The steel supporting frame is embedded between the steel bar net piece and the sealing plate. And the contact parts of the closing plate and the steel support frame are connected by self-tapping screws. A plurality of operation holes are formed in the plate surface of the sealing plate. And the concrete coating layer wraps the wall surface on one side of the steel support frame. And a gap is formed between the closing plate and the concrete coating layer. And the gap is filled with heat insulation materials.

The beam-column supporting frame comprises a vertically arranged steel column and a steel beam vertically connected with the steel column. The bottom of the steel column is connected with a prefabricated foundation.

And the prefabricated outer wall standard module is installed in the erected beam column supporting frame. And the prefabricated external wall standard module is connected with the steel column or the steel beam by adopting a bolt. The precast floor slab standard modules are erected on the upper flange of the steel beam. And the prefabricated floor slab standard modules are combined into a foundation slab, a floor slab or a roof slab of a house. And threaded sleeves are distributed on the upper surfaces of the prefabricated foundation and the prefabricated floor slab. The prefabricated interior wall standard modules are arranged on the prefabricated floor slab standard modules. And the prefabricated inner wall standard module is connected with the prefabricated floor slab standard module, the steel column or the steel beam by bolts.

Further, the sealing plate is a decorative plate.

Further, the whole precast floor slab standard module is a reinforced concrete slab. And the joint part of the four corners of the standard module of the precast floor slab and the column is provided with an accommodating notch. And a plurality of through holes are formed in the upper flange of the steel beam along the length direction. And the plate end of the prefabricated floor slab standard module is erected on the upper flange of the steel beam. And threaded sleeves are pre-embedded in the positions, corresponding to the flange through holes in the steel beams, of the prefabricated floor standard modules. And a screw of the fixing bolt penetrates through the steel beam upper flange through hole and then is screwed into the threaded sleeve, and the prefabricated floor slab standard module is fixedly connected to the upper flange of the steel beam.

Further, a steel mesh is arranged in the concrete coating layer.

Further, the prefabricated roof truss standard module is further included. The prefabricated roof truss standard module is arranged at the top of the beam-column supporting frame. And adjacent prefabricated roof truss standard modules are jointed through bolts to jointly form the roof truss.

Furthermore, the steel support frames of the prefabricated outer wall standard module and the prefabricated inner wall standard module are all rectangular support frames surrounded by channel steel.

The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I, a transverse channel steel II, a vertical channel steel I and a vertical channel steel II. And a plurality of through holes are formed in the web plate surfaces of the transverse channel steel I, the transverse channel steel II, the vertical channel steel I and the vertical channel steel II. And threaded sleeves are welded at the positions of the web plate through holes of the transverse channel steel I, the transverse channel steel II, the vertical channel steel I and the vertical channel steel II. The end parts of the transverse channel steel I, the transverse channel steel II, the vertical channel steel I and the vertical channel steel II are provided with grooves. The notches of the transverse channel steel I and the transverse channel steel II are opposite. The notches of the vertical channel steel I and the vertical channel steel II are opposite. The upper surface of horizontal channel-section steel I and the top parallel and level of vertical channel-section steel I and vertical channel-section steel II, the lower surface of horizontal channel-section steel II and the bottom parallel and level of vertical channel-section steel I and vertical channel-section steel II. And a plurality of wall vertical rods are arranged in the semi-enclosed space S. The wall vertical rod is a cold-formed thin-wall C-shaped steel vertical rod. The wall body vertical rod comprises a web plate and a flange. At the opening of the wall vertical rod, the flange is bent to extend out of the inner curled edge. And the transverse channel steel I and the transverse channel steel II are respectively covered at the top and the bottom of the wall body vertical rod. The upper end of the vertical rod of the wall body extends into the opening groove of the transverse channel steel I. And the lower end of the vertical rod of the wall body extends into the opening groove of the transverse channel steel II. The wall vertical rod is fixedly connected with the joint of the transverse channel steel I and the transverse channel steel II through self-tapping screws.

The steel beam is an I-shaped steel beam. And the prefabricated external wall standard module is connected with the flange of the steel beam. And the bolt penetrates through the upper flange of the I-shaped steel beam and the transverse channel steel II and then is screwed into the corresponding threaded sleeve above the web plate of the transverse channel steel II. And the bolt penetrates through the lower flange of the I-shaped steel beam and the transverse channel steel I and then is screwed into the corresponding threaded sleeve below the web plate of the transverse channel steel I.

The steel column is an I-shaped steel column. And the prefabricated outer wall standard module is connected with the flange of the steel column. And the bolt penetrates through the flange of the I-shaped steel column and the web of the vertical channel steel I or the vertical channel steel II and then is screwed into the corresponding threaded sleeve.

Furthermore, the steel support frame is a rectangular support frame surrounded by channel steel. The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I, a transverse channel steel II, a vertical channel steel I and a vertical channel steel II. The notches of the transverse channel steel I and the transverse channel steel II are opposite. The notches of the vertical channel steel I and the vertical channel steel II are opposite. The upper surface of horizontal channel-section steel I and the top parallel and level of vertical channel-section steel I and vertical channel-section steel II, the lower surface of horizontal channel-section steel II and the bottom parallel and level of vertical channel-section steel I and vertical channel-section steel II. And a plurality of through holes are formed in the web plate surfaces of the transverse channel steel I, the transverse channel steel II, the vertical channel steel I and the vertical channel steel II.

And a plurality of wall vertical rods are arranged in the semi-enclosed space S. The wall vertical rod is a cold-formed thin-wall C-shaped steel vertical rod. The wall body vertical rod comprises a web plate and a flange. At the opening of the wall vertical rod, the flange is bent to extend out of the inner curled edge. And the transverse channel steel I and the transverse channel steel II are respectively covered at the top and the bottom of the wall body vertical rod. The upper end of the vertical rod of the wall body extends into the opening groove of the transverse channel steel I. And the lower end of the vertical rod of the wall body extends into the opening groove of the transverse channel steel II. The wall vertical rod is fixedly connected with the joint of the transverse channel steel I and the transverse channel steel II through self-tapping screws.

The steel column is an I-shaped steel column. And the prefabricated external wall standard module is connected with the web plate of the steel column through a T-shaped connecting piece. The T-shaped connecting piece comprises a connecting plate and a connecting plate which are perpendicular to each other. And the connecting plate is vertically welded with the web plate of the steel column. The joint plate is connected with the vertical channel steel I or the vertical channel steel II. The surface of the joint plate is provided with through holes. And an internal thread sleeve is welded at the position corresponding to the through hole on the plate surface of one side of the joint plate, which deviates from the vertical channel steel I or the vertical channel steel II. And the bolt passes through a through hole on the web plate of the vertical channel steel I or the vertical channel steel II and then is screwed into the threaded sleeve of the T-shaped connecting piece.

The steel beam is a box-shaped steel beam. And a through hole is formed in the joint position of the box-type steel beam and the prefabricated external wall standard module. And a threaded sleeve is welded in the through hole in the inner cavity of the box-type steel beam in advance. And the bolt passes through a through hole on the web plate of the transverse channel steel I or the transverse channel steel II and then is screwed into the threaded sleeve.

Further, the foundation is combined by adopting different prefabricated foundation standard modules.

The prefabricated foundation standard module comprises a square-back module, a groove-shaped module and an L-shaped module, wherein the square-back module is provided with four foundation beams, the four foundation beams are combined into a rectangular frame structure, the groove-shaped module is provided with three foundation beams, the three foundation beams are combined into a U-shaped structure, the L-shaped module is provided with two foundation beams, the two foundation beams are mutually vertically combined into a L-shaped structure, the prefabricated foundation standard module divides a foundation into rectangular compartments which are connected one by one, and each compartment is fixedly connected through a counter-pulling prestressed steel pipe.

The connecting pieces are embedded in the four corners of the compartment on the upper surface of the foundation beam, threaded sleeves are embedded in the four sides of the compartment on the upper surface of the foundation beam, each connecting piece comprises a screw and a panel, a plurality of screws are welded on the panel surface on one side of each panel, a plurality of L-shaped reinforcing steel bars are welded on the panel surface on the other side of each panel, the panels and L-shaped reinforcing steel bars are embedded in the foundation beam, and the screws extend out of the upper surface of the foundation beam.

The steel column is connected with the foundation through a connecting piece. And the bolt penetrates through a threaded hole in the web plate of the transverse channel steel II and then is screwed into the threaded sleeve of the foundation beam.

Furthermore, an opening is formed in a transverse channel steel II of the prefabricated external wall standard module.

The technical effects of the invention are undoubted:

A. and in a building site, installing the unitized prefabricated wall standard modules in the erected beam column supporting frame. The site construction operation can be reduced, and the construction period is shortened;

B. the roof truss is processed in a factory from the lower foundation to the upper part and is directly assembled on site, and the floor slab, the wall body and the beam column are connected into a whole, so that the floor slab is prevented from moving laterally when the structure is stressed;

C. the whole stress performance and the safety of the house are improved, the assembling speed is high, and the environment comfort level is excellent.

Drawings

FIG. 1 is a schematic structural view of a modular block for prefabricated exterior walls in example 1;

FIG. 2 is a sectional view of a standard module of a prefabricated exterior wall in example 1;

FIG. 3 is a schematic view showing the construction of a modular prefabricated interior wall according to example 1;

FIG. 4 is a sectional view of a modular prefabricated interior wall module according to example 1;

fig. 5 is a schematic structural view of a prefabricated interior wall standard module sealing plate in example 1;

FIG. 6 is a schematic structural view of a steel support frame;

FIG. 7 is a schematic view of the connection between the prefabricated external wall standard module and the beam in embodiment 1;

FIG. 8 is a schematic view showing the connection between the prefabricated external wall standard module and the column in embodiment 1;

FIG. 9 is a schematic view showing the connection between the prefabricated interior wall standard module and the floor slab in example 1;

FIG. 10 is a schematic view of the composite construction structure of example 2;

FIG. 11 is a schematic view of a frame structure in example 2;

FIG. 12 is a schematic structural view of a modular block for prefabricated exterior walls according to embodiment 2;

FIG. 13 is a sectional view showing the construction of a modular block for exterior wall fabrication according to embodiment 2;

FIG. 14 is a schematic structural view of a prefabricated exterior wall standard module sealing plate in example 2;

FIG. 15 is a schematic view showing the connection between the prefabricated external wall standard module and the column in embodiment 2;

FIG. 16 is a schematic of a basic structure;

FIG. 17 is a schematic view of a basic connector configuration;

FIG. 18 is a schematic view of a composite construction according to example 8;

FIG. 19 is a schematic view of a first roof truss structure;

FIG. 20 is a view showing a first roof truss connection;

FIG. 21 is a view showing the connection between the sloping beams and purlins;

FIG. 22 is a view of the connection between the roof truss stringer and the steel columns;

FIG. 23 is a schematic view of a second roof truss structure;

fig. 24 is a schematic view of a third roof truss structure.

In the figure: the prefabricated steel structure comprises a prefabricated foundation standard module 1, a foundation beam 101, a stiffened plate 102, a counter-pulling prestressed steel pipe 104, a connecting piece 105, a prefabricated wall standard module 2, a steel supporting frame 201, a transverse channel steel I2011, a transverse channel steel II 2012, an opening 20121, a vertical channel steel I2013, a vertical channel steel II 2014, a concrete cladding layer 202, a steel bar mesh 203, a sealing plate 204, an operation hole 2041, a wall vertical rod 205, a connecting piece 207, a connecting plate 2071, a joint plate 2072, a prefabricated floor slab standard module 3, a prefabricated roof truss standard module 4, a roof ridge member 401, a roof truss oblique beam 402, purlins 403, a cover plate 404, a roof truss oblique beam extension rod 405, a steel column 5 and a steel beam 6.

Detailed Description

The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.

Example 1:

the embodiment discloses a demountable assembly formula composite building, including prefabricated wall body standard module 2, prefabricated floor slab standard module 3, prefabricated roof truss standard module 4 and beam column braced frame.

The prefabricated wall body standard module 2 comprises a prefabricated outer wall standard module and a prefabricated inner wall standard module. The prefabricated interior wall standard module divides the interior of a building into a plurality of rooms.

Referring to fig. 1 and 2, the prefabricated exterior wall standard module includes a steel support frame 201, a concrete cladding layer 202, and a closing plate 204. The closing plate 204 is a decorative plate. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar.

Referring to fig. 6, in this embodiment, a rectangular supporting frame is surrounded by a steel channel in the steel supporting frame 201 of the prefabricated external wall standard module. The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I2011, a transverse channel steel II 2012, a vertical channel steel I2013 and a vertical channel steel II 2014. The end parts of the transverse channel steel I2011, the transverse channel steel II 2012, the vertical channel steel I2013 and the vertical channel steel II 2014 are provided with grooves. The transverse channel I2011 is opposite to the notch of the transverse channel II 2012. The notch of the vertical channel steel I2013 is opposite to that of the vertical channel steel II 2014. The upper surface of horizontal channel-section steel I2011 and the top parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014, the lower surface of horizontal channel-section steel II 2012 and the bottom parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014. All be provided with a plurality of through-holes on the web face of horizontal channel-section steel I2011, II 2012 of horizontal channel-section steel, vertical channel-section steel I2013 and II 2014 of vertical channel-section steel. The welding of horizontal channel-section steel I2011, horizontal channel-section steel II 2012, vertical channel-section steel I2013 and vertical channel-section steel II 2014 have the screw sleeve in web through-hole position department. And wall vertical rods 205 are distributed in the semi-enclosed space S. The wall body vertical rod 205 is a cold-formed thin-walled C-shaped steel vertical rod. The wall vertical post 205 includes a web and a flange. At the opening of the wall vertical rod 205, the flange is bent to extend out of the inner curled edge. The transverse channel steel I2011 and the transverse channel steel II 2012 are respectively covered at the top and the bottom of the wall vertical rod 205. The upper end of the wall vertical rod 205 extends into the opening groove of the transverse channel steel I2011. The lower end of the wall vertical rod 205 extends into the opening groove of the transverse channel II 2012. The wall body vertical rod 205 is fixedly connected with the joint of the transverse channel steel I2011 and the transverse channel steel II 2012 through self-tapping screws. The steel support frame 201 is embedded between the steel mesh 203 and the closing plate 204. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. The concrete coating layer 202 coats one side wall surface of the steel support frame 201. There is a gap between the cover plate 204 and the concrete cladding 202. And the gap is filled with heat insulation materials. A mesh of steel reinforcement 203 is also disposed in the concrete cladding 202.

Referring to fig. 3, the prefabricated interior wall modular block includes a steel support frame 201 embedded between two closure plates 204. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar.

In this embodiment, the steel support frame 201 of the interior wall standard module is a rectangular support frame surrounded by channel steel. The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I2011, a transverse channel steel II 2012, a vertical channel steel I2013 and a vertical channel steel II 2014. The end parts of the transverse channel steel I2011, the transverse channel steel II 2012, the vertical channel steel I2013 and the vertical channel steel II 2014 are provided with grooves. The transverse channel I2011 is opposite to the notch of the transverse channel II 2012. The notch of the vertical channel steel I2013 is opposite to that of the vertical channel steel II 2014. The upper surface of horizontal channel-section steel I2011 and the top parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014, the lower surface of horizontal channel-section steel II 2012 and the bottom parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014. All be provided with a plurality of through-holes on the web face of horizontal channel-section steel I2011, II 2012 of horizontal channel-section steel, vertical channel-section steel I2013 and II 2014 of vertical channel-section steel. Referring to fig. 4, the transverse channel steel I2011, the vertical channel steel I2013 and the vertical channel steel II 2014 are welded with threaded sleeves at positions of web plate through holes. A plurality of operation holes 2041 are formed in the bottom of the plate surface of the closing plate 204. And wall vertical rods 205 are distributed in the semi-enclosed space S. The wall body vertical rod 205 is a cold-formed thin-walled C-shaped steel vertical rod. The wall vertical post 205 includes a web and a flange. At the opening of the wall vertical rod 205, the flange is bent to extend out of the inner curled edge. The transverse channel steel I2011 and the transverse channel steel II 2012 are respectively covered at the top and the bottom of the wall vertical rod 205. The upper end of the wall vertical rod 205 extends into the opening groove of the transverse channel steel I2011. The lower end of the wall vertical rod 205 extends into the opening groove of the transverse channel II 2012. The wall body vertical rod 205 is fixedly connected with the joint of the transverse channel steel I2011 and the transverse channel steel II 2012 through self-tapping screws. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. And the semi-enclosed space S is filled with heat insulation materials.

The beam-column support frame comprises a vertically arranged steel column 5 and a steel beam 6 vertically connected with the steel column 5. And the prefabricated external wall standard module and the prefabricated floor slab standard module 3 are arranged in the erected beam column supporting frame. And the prefabricated floor slab standard modules 3 are combined into a foundation slab, a floor slab or a roof slab of a house. The prefabricated interior wall standard modules are arranged on the prefabricated floor slab standard modules 3. The prefabricated external wall standard module is connected with a steel column 5 or a steel beam 6 by bolts. The prefabricated interior wall standard modules are connected with the prefabricated floor slab standard modules 3, the steel columns 5 or the steel beams 6 through bolts.

The whole precast floor slab standard module 3 is a reinforced concrete slab. And the joint part of the four corners of the prefabricated floor standard module 3 and the column is provided with an accommodating notch. And the plate end of the precast floor slab standard module 3 is erected on the upper flange of the steel beam 6. Threaded sleeves are pre-embedded in positions, corresponding to flange through holes in the steel beams 6, on the precast floor slab standard modules 3. And a threaded sleeve is also pre-embedded in the position, corresponding to the through hole II 2012 of the transverse channel steel of the standard module of the prefabricated inner wall, of the standard module 3 of the prefabricated floor slab.

Referring to fig. 7, the steel beam 6 is an i-beam. And a plurality of through holes are formed in the flange of the steel beam 6 along the length direction. The prefabricated external wall standard module is connected with the flange of the steel beam 6. And the bolts penetrate through the upper flanges of the I-shaped steel beams and the transverse channel steel II 2012 and then are screwed into corresponding threaded sleeves above the web plate of the transverse channel steel II 2012. The bolt passes through the lower flange of the I-shaped steel beam and the transverse channel steel I2011 and then is screwed into the corresponding threaded sleeve below the web plate of the transverse channel steel I2011.

Referring to fig. 8, the steel column 5 is an i-shaped steel column. And the prefabricated outer wall standard module is connected with the flange of the steel column 5. And the bolt penetrates through the flange of the I-shaped steel column and the web of the vertical channel steel I2013 or the vertical channel steel II 2014 and then is screwed into the corresponding threaded sleeve.

Referring to fig. 9, the screw of the fixing bolt passes through the through hole of the upper flange of the steel beam 6 and then is screwed into the corresponding threaded sleeve of the standard module 3 of the precast floor, and the standard module 3 of the precast floor is fixedly connected to the upper flange of the steel beam 6. The prefabricated interior wall standard module is provided with fixing bolts through the operation holes 2041 at the bottom of the closing plate 204. And the screw of the bolt is screwed into the corresponding threaded sleeve of the prefabricated floor standard module 3 from the lower end of the wall body.

The prefabricated roof truss standard module 4 is arranged at the top of the beam-column supporting frame. And adjacent prefabricated roof truss standard modules 4 are jointed through bolts to form the roof truss together.

Example 2:

referring to fig. 10 and 11, the present embodiment discloses a detachable composite building, which is assembled by combining and modularizing a beam-column supporting frame, a prefabricated foundation standard module 1, a prefabricated wall standard module 2, a prefabricated floor standard module 3, and a prefabricated roof truss standard module 4. And the prefabricated foundation standard module 1, the prefabricated wall standard module 2, the prefabricated floor slab standard module 3 and the prefabricated roof truss standard module 4 are directly assembled on site after finishing decoration in a factory.

Referring to fig. 12, 13 and 14, the prefabricated exterior wall standard module includes a steel support frame 201, a concrete cladding 202 and a closing plate 204. The closing plate 204 is a decorative plate. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar.

In this embodiment, the steel support frame 201 of the prefabricated external wall standard module is a rectangular support frame surrounded by channel steel. The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I2011, a transverse channel steel II 2012, a vertical channel steel I2013 and a vertical channel steel II 2014. The end parts of the transverse channel steel I2011, the transverse channel steel II 2012, the vertical channel steel I2013 and the vertical channel steel II 2014 are provided with grooves. The transverse channel I2011 is opposite to the notch of the transverse channel II 2012. The notch of the vertical channel steel I2013 is opposite to that of the vertical channel steel II 2014. The upper surface of horizontal channel-section steel I2011 and the top parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014, the lower surface of horizontal channel-section steel II 2012 and the bottom parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014. All be provided with a plurality of through-holes on the web face of horizontal channel-section steel I2011, II 2012 of horizontal channel-section steel, vertical channel-section steel I2013 and II 2014 of vertical channel-section steel. And wall vertical rods 205 are distributed in the semi-enclosed space S. The wall body vertical rod 205 is a cold-formed thin-walled C-shaped steel vertical rod. The wall vertical post 205 includes a web and a flange. At the opening of the wall vertical rod 205, the flange is bent to extend out of the inner curled edge. The transverse channel steel I2011 and the transverse channel steel II 2012 are respectively covered at the top and the bottom of the wall vertical rod 205. The upper end of the wall vertical rod 205 extends into the opening groove of the transverse channel steel I2011. The lower end of the wall vertical rod 205 extends into the opening groove of the transverse channel II 2012. The wall body vertical rod 205 is fixedly connected with the joint of the transverse channel steel I2011 and the transverse channel steel II 2012 through self-tapping screws. The steel support frame 201 is embedded between the steel mesh 203 and the closing plate 204. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. The concrete coating layer 202 coats one side wall surface of the steel support frame 201. There is a gap between the cover plate 204 and the concrete cladding 202. And the gap is filled with heat insulation materials. A mesh of steel reinforcement 203 is also disposed in the concrete cladding 202.

The concrete cladding layer 202 of the prefabricated external wall standard module faces the outdoor side, and the closing plate 204 faces the indoor side. And an opening is formed in the indoor side of the transverse channel steel II 2012 of the prefabricated outer wall standard module. The opening can be embedded with the corner of the adjacent prefabricated floor slab. The bolt passes through a threaded hole in a web plate of the transverse channel II 2012 and then is screwed into a threaded sleeve of the foundation beam 101.

The prefabricated interior wall modules include a steel support frame 201 that is embedded between two closure plates 204. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar.

In this embodiment, the steel support frame 201 of the interior wall standard module is a rectangular support frame surrounded by channel steel. The channel has a web and a channel flange. The channel steel comprises a transverse channel steel I2011, a transverse channel steel II 2012, a vertical channel steel I2013 and a vertical channel steel II 2014. The end parts of the transverse channel steel I2011, the transverse channel steel II 2012, the vertical channel steel I2013 and the vertical channel steel II 2014 are provided with grooves. The transverse channel I2011 is opposite to the notch of the transverse channel II 2012. The notch of the vertical channel steel I2013 is opposite to that of the vertical channel steel II 2014. The upper surface of horizontal channel-section steel I2011 and the top parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014, the lower surface of horizontal channel-section steel II 2012 and the bottom parallel and level of vertical channel-section steel I2013 and vertical channel-section steel II 2014. All be provided with a plurality of through-holes on the web face of horizontal channel-section steel I2011, II 2012 of horizontal channel-section steel, vertical channel-section steel I2013 and II 2014 of vertical channel-section steel. The plate surface of the closing plate 204 is provided with a plurality of operation holes 2041. And wall vertical rods 205 are distributed in the semi-enclosed space S. The wall body vertical rod 205 is a cold-formed thin-walled C-shaped steel vertical rod. The wall vertical post 205 includes a web and a flange. At the opening of the wall vertical rod 205, the flange is bent to extend out of the inner curled edge. The transverse channel steel I2011 and the transverse channel steel II 2012 are respectively covered at the top and the bottom of the wall vertical rod 205. The upper end of the wall vertical rod 205 extends into the opening groove of the transverse channel steel I2011. The lower end of the wall vertical rod 205 extends into the opening groove of the transverse channel II 2012. The wall body vertical rod 205 is fixedly connected with the joint of the transverse channel steel I2011 and the transverse channel steel II 2012 through self-tapping screws. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. And the semi-enclosed space S is filled with heat insulation materials.

Referring to fig. 16, the foundation is combined by different prefabricated foundation standard modules 1, the prefabricated foundation standard modules 1 comprise a square-back module, a groove-shaped module and L-shaped modules, the square-back module is provided with four foundation beams 101, the four foundation beams 101 are combined into a rectangular frame structure, the groove-shaped module is provided with three foundation beams 101, the three foundation beams 101 are combined into a U-shaped structure, the L-shaped module is provided with two foundation beams 101, the two foundation beams 101 are vertically combined into a L-shaped structure, the prefabricated foundation standard modules 1 divide the foundation into rectangular compartments which are connected one by one, and the compartments are connected and fixed through counter-pulling prestressed steel pipes 104.

The upper surface of the foundation beam 101 is embedded with connecting pieces 105 at four corners of the compartment, and the upper surface of the foundation beam 101 is embedded with threaded sleeves at four sides of the compartment, referring to fig. 17, the connecting pieces 105 comprise threaded rods and face plates, a plurality of threaded rods are welded on one side of the face plate, a plurality of L-shaped reinforcing steel bars are welded on the other side of the face plate, the face plate and the L-shaped reinforcing steel bars are embedded in the foundation beam 101, and the threaded rods extend out of the upper surface of the foundation beam 101.

The beam-column support frame comprises a vertically arranged steel column 5 and a steel beam 6 vertically connected with the steel column 5. The steel columns 5 are joined to the foundation by means of connectors 105. The precast floor slab is erected on the upper flange of the steel beam 6. Threaded sleeves are distributed on the upper surfaces of the prefabricated foundation and the prefabricated floor slab.

The steel beam 6 is a box-shaped steel beam. And through holes are formed in the joint positions of the box-shaped steel beams and the prefabricated wall standard modules 2. And a threaded sleeve is welded in the through hole in the inner cavity of the box-type steel beam in advance. The bolt passes through a through hole in the web plate of the transverse channel steel I2011 or the transverse channel steel II 2012 and then is screwed into the threaded sleeve.

Referring to fig. 15, the steel column 5 is an i-shaped steel column. The prefabricated wall standard module 2 is jointed with the web plate of the steel column 5 through a T-shaped connecting piece 207. The T-shaped connector 207 includes a connection plate 2071 and a connection plate 2072 perpendicular to each other. The connecting plate 2071 is vertically welded with the web plate of the steel column 5. The joint plate 2072 is in contact with the vertical channel I2013 or the vertical channel II 2014. The joint plate 2072 has through holes on its surface. And a threaded sleeve is welded at the position corresponding to the through hole on the plate surface of one side of the joint plate 2072, which is far away from the vertical channel steel I2013 or the vertical channel steel II 2014. And the bolt passes through a through hole on the web plate of the vertical channel steel I2013 or the vertical channel steel II 2014 and then is screwed into the threaded sleeve of the T-shaped connecting piece 207.

Example 3:

the embodiment discloses a demountable assembly formula composite construction, including prefabricated wall body standard module 2, prefabricated floor slab standard module 3 and beam column braced frame.

The prefabricated wall body standard module 2 comprises a prefabricated outer wall standard module and a prefabricated inner wall standard module. The prefabricated interior wall standard module divides the interior of the building into a plurality of rooms.

The prefabricated external wall standard module comprises a steel support frame 201, a concrete coating layer 202 and a closing plate 204. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. The upper surface, the lower surface, the first end surface and the second end surface of the steel support frame 201 are provided with a plurality of through holes. The steel support frame 201 is welded with a threaded sleeve for engaging with the beam-column support frame at the through hole position. The threaded sleeve is located in the semi-enclosed space S. The steel support frame 201 is embedded between the steel mesh 203 and the closing plate 204. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. The concrete coating layer 202 coats one side wall surface of the steel support frame 201. There is a gap between the cover plate 204 and the concrete cladding 202. And the gap is filled with heat insulation materials.

The prefabricated interior wall modules include a steel support frame 201 that is embedded between two closure plates 204. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. The upper surface, the lower surface, the first end surface and the second end surface of the steel support frame 201 are provided with a plurality of through holes used for being connected with the precast floor slab standard modules 3 and the beam column support frame. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. And the semi-enclosed space S is filled with heat insulation materials.

Example 4:

The prefabricated external wall standard module comprises a steel support frame 201, a concrete coating layer 202 and a closing plate 204. The steel support frame 201 is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface. And a semi-enclosed space S is enclosed by the closed section bar. The upper surface, the lower surface, the first end surface and the second end surface of the steel support frame 201 are provided with a plurality of through holes used for being connected with a foundation 1, a steel column 5 or a steel beam 6. The steel support frame 201 is embedded between the steel mesh 203 and the closing plate 204. The contact portions of the closing plate 204 and the steel support frame 201 are connected by self-tapping screws. The plate surface of the closing plate 204 is provided with a plurality of operation holes 2041. The concrete coating layer 202 coats one side wall surface of the steel support frame 201. There is a gap between the cover plate 204 and the concrete cladding 202. And the gap is filled with heat insulation materials.

The beam-column support frame comprises a vertically arranged steel column 5 and a steel beam 6 vertically connected with the steel column 5. The bottom of the steel column 5 is connected with a prefabricated foundation.

And the prefabricated outer wall standard module is installed in the erected beam column supporting frame. The prefabricated external wall standard module is connected with a steel column 5 or a steel beam 6 by bolts. The precast floor slab standard modules 3 are erected on the upper flange of the steel beam 6. And the prefabricated floor slab standard modules 3 are combined into a foundation slab, a floor slab or a roof slab of a house. And threaded sleeves are distributed on the upper surfaces of the prefabricated foundation and the prefabricated floor slab. The prefabricated interior wall standard modules are arranged on the prefabricated floor slab standard modules 3. The prefabricated interior wall standard modules are connected with the prefabricated floor slab standard modules 3, the steel columns 5 or the steel beams 6 through bolts.

Example 5:

the main structure of this embodiment is the same as that of

embodiment

3 or 4, wherein the sealing plate 204 is a decorative plate. The decorative board is an OSB board or a gypsum board.

Example 6:

the main structure of this embodiment is the same as that of

embodiment

3 or 4, wherein the prefabricated floor standard module 3 is integrally a reinforced concrete slab. And the joint part of the four corners of the prefabricated floor standard module 3 and the column is provided with an accommodating notch. And a plurality of through holes are formed in the upper flange of the steel beam 6 along the length direction. And the plate end of the precast floor slab standard module 3 is erected on the upper flange of the steel beam 6. Threaded sleeves are pre-embedded in positions, corresponding to flange through holes in the steel beams 6, on the precast floor slab standard modules 3. And a screw of the fixing bolt penetrates through the through hole of the upper flange of the steel beam 6 and then is screwed into the threaded sleeve, and the prefabricated floor standard module 3 is fixedly connected to the upper flange of the steel beam 6.

Example 7:

the main structure of this embodiment is the same as that of

embodiment

3 or 4, wherein a steel mesh 203 is further disposed in the concrete coating 202.

Example 8:

referring to fig. 18, the present embodiment discloses a detachable composite building with a plane projection of L shape, which comprises a main building body and an auxiliary building body, wherein the beam column supporting frame, the prefabricated foundation standard module 1, the prefabricated wall standard module 2, the prefabricated floor standard module 3 and the prefabricated roof truss standard module 4 are adopted to perform modular combination assembly.

The prefabricated roof truss standard module 4 is arranged at the top of the beam-column supporting frame. The prefabricated roof truss standard module 4 comprises a first prefabricated roof truss standard module, a second prefabricated roof truss standard module and a third prefabricated roof truss standard module. And a second prefabricated roof truss standard module and a third prefabricated roof truss standard module are adopted at the joint position of the main building body and the auxiliary building body.

See fig. 19, 20, 21 and 22. The first prefabricated roof truss standard module comprises a ridge member 401, two first roof trusses and a roof panel. The two first roof racks are distributed on two sides of the ridge member 401 in an inverted V shape. The first roof truss includes two roof truss stringers 402 and a plurality of purlins 403 disposed between the two roof truss stringers 402. The purlins 403 are arranged at the upper flanges of the roof truss stringers 402. One end of the first roof frame is fixedly connected with the top of the steel column 5, and the other end of the first roof frame is fixedly connected with the ridge member 401. One end of the roof truss oblique beam 402 is fixedly connected with the top of the steel column 5, and the other end of the roof truss oblique beam is fixedly connected with the ridge member 401. The roof panels are arranged on purlins 403.

The second prefabricated roof truss standard module comprises a ridge member 401, a first roof truss, a second roof truss and a roof panel. The first roof truss and the second roof truss are respectively arranged on both sides of the ridge member 401. The second roof truss comprises two roof truss sloping beams 402, purlins 403 and roof truss sloping beam extension rods 405. The extension rod 405 of the roof truss sloping beam is arranged at the tail end of one roof truss sloping beam 402. The purlins 403 are arranged between two roof truss stringers 402 and between the roof truss stringers 402 and the roof truss stringer extension rods 405. One end of the first roof frame is fixedly connected with the top of the steel column 5, and the other end of the first roof frame is fixedly connected with the ridge member 401. One end of the second roof frame is fixedly connected with the top of the steel column 5, and the other end of the second roof frame is fixedly connected with the ridge member 401. The roof panels are arranged on purlins 403.

The third prefabricated roof truss standard module comprises a ridge member 401, a first roof truss, a third roof truss and a roof panel. The first roof truss and the third roof truss are respectively arranged on both sides of the ridge member 401. The third roof truss includes two roof truss stringers 402 and purlins 403. The tail ends of the two roof truss inclined beams 402 are provided with roof truss inclined beam extension rods 405. The tail ends of the two roof truss stringer extension rods 405 are joined. The roof truss sloping beam extension rod 405 and the roof truss sloping beam 402 enclose an M-shaped structure. The purlins 403 are arranged in an M-shaped configuration. One end of the first roof frame is fixedly connected with the top of the steel column 5, and the other end of the first roof frame is fixedly connected with the ridge member 401. One end of the third roof frame is fixedly connected with the top of the steel column 5, and the other end of the third roof frame is fixedly connected with the ridge member 401. The roof panels are arranged on purlins 403.

And adjacent prefabricated roof truss standard modules 4 are jointed through bolts to form the roof truss together.

Claims

1. The utility model provides a can dismantle assembled composite construction which characterized in that: the prefabricated wall comprises a prefabricated wall standard module (2), a prefabricated floor standard module (3) and a beam column supporting frame;

the prefabricated wall body standard module (2) comprises a prefabricated outer wall standard module and a prefabricated inner wall standard module; the prefabricated interior wall standard module divides the interior of the building into a plurality of rooms;

the prefabricated external wall standard module comprises the steel supporting frame (201), a concrete coating layer (202) and a sealing plate (204); the steel support frame (201) is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface; the closed section bars enclose a semi-enclosed space S; the upper surface, the lower surface, the first end surface and the second end surface of the steel supporting frame (201) are provided with a plurality of through holes; the steel support frame (201) is welded with a threaded sleeve used for being jointed with the beam-column support frame at the position of the through hole; the threaded sleeve is positioned in the semi-enclosed space S; the steel supporting frame (201) is embedded between the steel mesh (203) and the closing plate (204). The contact part of the closing plate (204) and the steel support frame (201) is connected by self-tapping screws; the concrete coating layer (202) coats one side wall surface of the steel support frame (201); a gap is formed between the closing plate (204) and the concrete coating layer (202); the gap is filled with heat insulation materials;

the prefabricated interior wall standard module comprises a steel support frame (201) embedded between two close plates (204); the steel support frame (201) is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface; the closed section bars enclose a semi-enclosed space S; the upper surface, the lower surface, the first end surface and the second end surface of the steel support frame (201) are respectively provided with a plurality of through holes for being connected with the precast floor slab standard module (3) and the beam column support frame; the contact part of the closing plate (204) and the steel support frame (201) is connected by self-tapping screws; the semi-enclosed space S is filled with heat insulation materials;

the beam-column supporting frame comprises a steel column (5) which is vertically arranged and a steel beam (6) which is vertically connected with the steel column (5); the prefabricated external wall standard module and the prefabricated floor slab standard module (3) are arranged in the erected beam column supporting frame; the prefabricated floor slab standard modules (3) are combined into a foundation slab, a floor slab or a roof slab of a house; the prefabricated interior wall standard module is arranged on the prefabricated floor slab standard module (3); the prefabricated external wall standard module is connected with a steel column (5) or a steel beam (6) by bolts; the prefabricated interior wall standard module is connected with the prefabricated floor slab standard module (3), the steel column (5) or the steel beam (6) through bolts.

2. The utility model provides a can dismantle assembled composite construction which characterized in that: the prefabricated wall comprises a prefabricated wall standard module (2), a prefabricated floor standard module (3) and a beam column supporting frame;

the prefabricated external wall standard module comprises a steel support frame (201), a concrete coating layer (202) and a sealing plate (204); the steel support frame (201) is a four-sided closed profile having an upper surface, a lower surface, a first end surface and a second end surface; the closed section bars enclose a semi-enclosed space S; the upper surface, the lower surface, the first end surface and the second end surface of the steel supporting frame (201) are respectively provided with a plurality of through holes for being connected with a foundation (1), a steel column (5) or a steel beam (6); the steel supporting frame (201) is embedded between the steel mesh (203) and the closing plate (204); the contact part of the closing plate (204) and the steel support frame (201) is connected by self-tapping screws; the plate surface of the sealing plate (204) is provided with a plurality of operation holes (2041); the concrete coating layer (202) coats one side wall surface of the steel support frame (201); a gap is formed between the closing plate (204) and the concrete coating layer (202); the gap is filled with heat insulation materials;

the beam-column supporting frame comprises a steel column (5) which is vertically arranged and a steel beam (6) which is vertically connected with the steel column (5); the bottom of the steel column (5) is connected with a prefabricated foundation;

the prefabricated external wall standard module is installed in the erected beam column supporting frame; the prefabricated external wall standard module is connected with a steel column (5) or a steel beam (6) by bolts; the prefabricated floor slab standard modules (3) are erected on the upper flange of the steel beam (6); the prefabricated floor slab standard modules (3) are combined into a foundation slab, a floor slab or a roof slab of a house; the upper surfaces of the prefabricated foundation and the prefabricated floor slab are provided with threaded sleeves; the prefabricated interior wall standard module is arranged on the prefabricated floor slab standard module (3); the prefabricated interior wall standard module is connected with the prefabricated floor slab standard module (3), the steel column (5) or the steel beam (6) through bolts.

3. A demountable composite building according to claim 1 or 2, wherein: the closing plate (204) is a decorative plate.

4. A demountable composite building according to claim 1 or 2, wherein: the whole prefabricated floor slab standard module (3) is a reinforced concrete slab; the joint parts of the four corners of the precast floor slab standard modules (3) and the columns are provided with accommodating gaps; the upper flange of the steel beam (6) is provided with a plurality of through holes along the length direction; the slab end of the precast floor slab standard module (3) is erected on the upper flange of the steel beam (6); threaded sleeves are pre-embedded in the positions, corresponding to the flange through holes in the steel beams (6), of the prefabricated floor slab standard modules (3); and a screw of the fixing bolt penetrates through the through hole of the upper flange of the steel beam (6) and then is screwed into the threaded sleeve, and the prefabricated floor slab standard module (3) is fixedly connected to the upper flange of the steel beam (6).

5. A demountable composite building according to claim 1 or 4, wherein: and a steel bar mesh (203) is also arranged in the concrete coating layer (202).

6. A demountable composite building according to claim 1 or 2, wherein: the prefabricated roof truss structure also comprises a prefabricated roof truss standard module (4); the prefabricated roof truss standard module (4) is arranged at the top of the beam-column supporting frame; the adjacent prefabricated roof truss standard modules (4) are connected through bolts to form the roof truss together.

7. A demountable composite building according to claim 1, wherein: the steel support frames (201) of the prefabricated outer wall standard module and the prefabricated inner wall standard module are rectangular support frames surrounded by channel steel;

the channel steel is provided with a web plate and a channel steel flange; the channel steel comprises a transverse channel steel I (2011), a transverse channel steel II (2012), a vertical channel steel I (2013) and a vertical channel steel II (2014); the web plate surfaces of the transverse channel steel I (2011), the transverse channel steel II (2012), the vertical channel steel I (2013) and the vertical channel steel II (2014) are all provided with a plurality of through holes; the transverse channel steel I (2011), the transverse channel steel II (2012), the vertical channel steel I (2013) and the vertical channel steel II (2014) are welded with threaded sleeves at positions of web plate through holes; grooves are formed in the end portions of the transverse channel steel I (2011), the transverse channel steel II (2012), the vertical channel steel I (2013) and the vertical channel steel II (2014); the notches of the transverse channel steel I (2011) and the transverse channel steel II (2012) are opposite; the notches of the vertical channel steel I (2013) and the vertical channel steel II (2014) are opposite; the upper surface of the transverse channel steel I (2011) is flush with the tops of the vertical channel steel I (2013) and the vertical channel steel II (2014), and the lower surface of the transverse channel steel II (2012) is flush with the bottoms of the vertical channel steel I (2013) and the vertical channel steel II (2014); a plurality of wall vertical rods (205) are arranged in the semi-enclosed space S; the wall vertical rod (205) is a cold-formed thin-wall C-shaped steel vertical rod; the wall vertical rod (205) comprises a web and a flange; at the opening of the wall vertical rod (205), the flange is bent to extend out of an inner turned edge; the transverse channel steel I (2011) and the transverse channel steel II (2012) are respectively covered at the top and the bottom of the wall vertical rod (205); the upper end of the wall vertical rod (205) extends into an opening groove of the transverse channel steel I (2011); the lower end of the wall vertical rod (205) extends into an open slot of the transverse channel steel II (2012); the joint of the wall vertical rod (205) and the transverse channel I (2011) and the joint of the transverse channel II (2012) are fixedly connected through self-tapping screws;

the steel beam (6) is an I-shaped steel beam; the prefabricated external wall standard module is connected with a flange of the steel beam (6); the bolts penetrate through the upper flanges of the I-shaped steel beams and the transverse channel steel II (2012) and then are screwed into corresponding threaded sleeves above the web plates of the transverse channel steel II (2012); the bolt penetrates through a lower flange of the I-shaped steel beam and the transverse channel steel I (2011) and then is screwed into a corresponding threaded sleeve below a web plate of the transverse channel steel I (2011);

the steel column (5) is an I-shaped steel column; the prefabricated outer wall standard module is connected with the flange of the steel column (5); and the bolts penetrate through flanges of the I-shaped steel columns and webs of the vertical channel steel I (2013) or the vertical channel steel II (2014) and then are screwed into the corresponding threaded sleeves.

8. A demountable composite building according to claim 2, wherein: the steel supporting frame (201) is a rectangular supporting frame surrounded by channel steel; the channel steel is provided with a web plate and a channel steel flange; the channel steel comprises a transverse channel steel I (2011), a transverse channel steel II (2012), a vertical channel steel I (2013) and a vertical channel steel II (2014); the notches of the transverse channel steel I (2011) and the transverse channel steel II (2012) are opposite; the notches of the vertical channel steel I (2013) and the vertical channel steel II (2014) are opposite; the upper surface of the transverse channel steel I (2011) is flush with the tops of the vertical channel steel I (2013) and the vertical channel steel II (2014), and the lower surface of the transverse channel steel II (2012) is flush with the bottoms of the vertical channel steel I (2013) and the vertical channel steel II (2014); the web plate surfaces of the transverse channel steel I (2011), the transverse channel steel II (2012), the vertical channel steel I (2013) and the vertical channel steel II (2014) are all provided with a plurality of through holes;

a plurality of wall vertical rods (205) are arranged in the semi-enclosed space S; the wall vertical rod (205) is a cold-formed thin-wall C-shaped steel vertical rod; the wall vertical rod (205) comprises a web and a flange; at the opening of the wall vertical rod (205), the flange is bent to extend out of an inner turned edge; the transverse channel steel I (2011) and the transverse channel steel II (2012) are respectively covered at the top and the bottom of the wall vertical rod (205); the upper end of the wall vertical rod (205) extends into an opening groove of the transverse channel steel I (2011); the lower end of the wall vertical rod (205) extends into an open slot of the transverse channel steel II (2012); the joint of the wall vertical rod (205) and the transverse channel I (2011) and the joint of the transverse channel II (2012) are fixedly connected through self-tapping screws;

the steel column (5) is an I-shaped steel column; the prefabricated outer wall standard module is connected with a web plate of the steel column (5) through a T-shaped connecting piece (207); the T-shaped connecting piece (207) comprises a connecting plate (2071) and a connecting plate (2072) which are perpendicular to each other; the connecting plate (2071) is vertically welded with a web plate of the steel column (5); the joint plate (2072) is connected with the vertical channel steel I (2013) or the vertical channel steel II (2014); through holes are distributed on the surface of the joint plate (2072); an internal thread sleeve is welded at the position, corresponding to the through hole, of the plate surface of one side, away from the vertical channel steel I (2013) or the vertical channel steel II (2014), of the joint plate (2072); the bolt penetrates through a through hole in a web plate of the vertical channel steel I (2013) or the vertical channel steel II (2014) and then is screwed into a threaded sleeve of the T-shaped connecting piece (207);

the steel beam (6) is a box-shaped steel beam; a through hole is formed in the plate surface at the joint position of the box-type steel beam and the prefabricated outer wall standard module; a threaded sleeve is welded in the through hole in the inner cavity of the box-type steel beam in advance; and the bolt passes through a through hole on the web plate of the transverse channel steel I (2011) or the transverse channel steel II (2012) and then is screwed into the threaded sleeve.

9. A demountable composite building according to claim 8, wherein: the foundation is combined by adopting different prefabricated foundation standard modules (1);

the prefabricated foundation standard module (1) comprises a square-shaped module, a groove-shaped module and an L-shaped module, wherein the square-shaped module is provided with four foundation beams (101), the four foundation beams (101) are combined into a rectangular frame structure, the groove-shaped module is provided with three foundation beams (101), the three foundation beams (101) are combined into a U-shaped structure, the L-shaped module is provided with two foundation beams (101), the two foundation beams (101) are vertically combined into a L-shaped structure, the prefabricated foundation standard module (1) divides a foundation into rectangular compartments which are connected one by one, and the compartments are connected and fixed through counter-pulling prestressed steel pipes (104);

connecting pieces (105) are embedded in the four corners of the compartment on the upper surface of the foundation beam (101), threaded sleeves are embedded in the four sides of the compartment on the upper surface of the foundation beam (101), each connecting piece (105) comprises a screw and a panel, a plurality of screws are welded on the panel surface on one side of the panel, a plurality of L-shaped reinforcing steel bars are welded on the panel surface on the other side of the panel, the panel and the L-shaped reinforcing steel bars are embedded in the foundation beam (101), and the screws extend out of the upper surface of the foundation beam (101);

the steel column (5) is connected with a foundation through a connecting piece (105); and the bolt passes through a threaded hole in a web plate of the transverse channel steel II (2012) and then is screwed into a threaded sleeve of the foundation beam (101).

10. A demountable composite building according to claim 8, wherein: and an opening (20121) is formed in the transverse channel steel II (2012) of the prefabricated outer wall standard module.