CN104060714B - A kind of construction method of jointless architecture interlayer combined wall - Google Patents

Abstract

The invention provides a construction method of a seamless building sandwich composite wall, the steps are as follows: ①Concrete outer wall is manufactured on the factory production line, a thermal insulation layer is compounded on the outer wall, and non-metallic connecting rods are used to penetrate the thermal insulation Two layers of composite wall are formed; ②A formwork frame is set on the outer periphery of the insulation layer to form an inner wall cavity, and concrete is poured into the inner wall cavity to form an inner wall. After the inner wall is maintained, the formwork frame is removed to form a three-layer composite wall. Wall; ③ Place the ladder-shaped ends of the two three-layer composite walls correspondingly, set the formwork on the outside of the inner wall, and the formwork is fastened to the inner wall through connectors to form a wall joint cavity. Two pieces of three-layer After the composite wall is placed correspondingly, gaps are formed, and the joint cavities and gaps of the wall are poured with concrete, and a seamless building sandwich composite wall is formed after curing. The invention completes the compounding of the outer wall body and the insulation layer on the factory production line, and completes the pouring of the inner wall body on the construction site, so as to solve the deficiencies of the prior art.

Description

A construction method of a seamless building sandwich composite wall

technical field

The invention relates to a building wall, and relates to a construction method for a seamless building sandwich composite wall.

Background technique

At present, the sandwich composite building wall includes three layers, an outer wall, an insulation layer and an inner wall. The construction method is as follows: prefabricate the concrete outer wall, leave through holes during prefabrication, and pre-embed casings to install wall-through screw rods. The outer wall can act as an outer formwork during construction. During construction, scaffolding is set on the outside of the wall, and a support formwork is set on the inside of the wall. Screws are used to pass through the casing and formwork, and tightening is used on both sides of the wall. Firmware is tight. Install the prepared insulation layer on the inner side of the prefabricated outer wall, and then pour concrete on the inner side of the insulation layer to form an inner wall after curing. After curing, remove the formwork and the wall-through screw to form a sandwich composite wall. The disadvantages of this construction are: It is necessary to fill all the through holes left on the outer wall and the insulation layer. Since there are many through holes on the wall, it takes more man-hours to complete the hole filling, and it needs to be waterproofed. At the same time, it takes more time to fill the holes. High technology and sense of responsibility often cause water to enter the wall due to improper handling. This is also one of the reasons for water seepage in the interior walls of many building walls. This kind of wall is extremely difficult to repair, especially in winter. When it is damaged, cracks and other phenomena are prone to appear, and in severe cases, the surface of the outer wall will fall off. The thermal insulation effect of the insulation layer is greatly reduced; there are many materials for setting up scaffolding, the operation of disassembling and assembling scaffolding is complicated, and the risk factor of working at heights outside the wall is high. At the same time, due to the poor structure of the connecting parts, cracks are prone to appear on the surface of the outer wall, and in severe cases, the outer wall skin will fall off.

This construction method in the prior art also has the disadvantage that the gap between the two walls is difficult to deal with, so that the thermal insulation performance and strength of the wall are reduced.

Contents of the invention

The purpose of the present invention is to provide a construction method for a seamless building sandwich composite wall, which completes the compounding of the outer wall and the insulation layer on the factory production line, and completes the pouring of the inner wall at the construction site to solve the current problem. There are technical deficiencies.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a construction method of a seamless building sandwich composite wall, the steps are as follows:

①Concrete exterior walls are made on the factory production line, and the insulation layer is compounded on the exterior walls. Several non-metal connecting rods are taken to penetrate the insulation layer, so that the first anchor on the connection rods is placed in the exterior wall, and the connection rods The annular baffle on the top is located at the outer edge of the right end of the insulation layer, the annular sealing platform on the connecting rod is located in the insulation layer, close to the left end of the insulation layer, and the second anchor on the connecting rod is located outside the right end of the insulation layer. After the outer wall, a two-layer composite wall is formed;

② Set a formwork frame on the outer periphery of the insulation layer to form an inner wall cavity. The length of the formwork frame is shorter than the length of the insulation layer. Concrete is poured in the inner wall cavity to form an inner wall, and the inner wire is pre-embedded when pouring concrete The length of the inner wall is shorter than the length of the insulation layer, so that the outer surface of one end of the inner wall and the outer surface of one end of the insulation layer are in a ladder shape, and at least one connecting rod is provided at the part of the insulation layer longer than the inner wall to maintain the inner wall Remove the formwork frame after the wall to form a three-layer composite wall with a ladder-like end;

③Place the ladder-shaped ends of the two three-layer composite walls correspondingly, set the formwork on the outside of the inner wall, fasten the formwork to the inner wall through the connector, and fix one end of the connecting rod to the outside of the formwork with a steel rope or a rod. The joints of the wall are connected to form a wall joint cavity. Two three-layer composite walls are placed correspondingly to form a gap. The wall joint cavity and gap are poured with concrete. After maintenance, the formwork, connectors and fixing parts are removed to form a jointless Construction sandwich composite wall.

Ring-shaped teeth are arranged in the middle of the connecting rod described in step ①, and the ring-shaped teeth are located in the insulation layer. The angle α between the surface of the annular tooth and the center line of the connecting rod is an acute angle, the diameter of the right end of the annular tooth is the maximum diameter, and the diameter of the left end of the annular tooth is smaller than the diameter of the right end. The longitudinal cross-sectional shapes of the first anchoring body and the second anchoring body on the connecting rod in step ① are both triangular. The shape of the first anchoring body and the second anchoring body provided on the connecting rod described in step ① is flat, and the cross-sectional area of the outer end is larger than the cross-sectional area of the inner end. The outer end of the second anchor provided on the connecting rod described in step ① is provided with a second rectangular connecting bolt. The thickness of the outer wall in the building sandwich composite wall obtained in step ④ is smaller than the thickness of the inner wall. In step ①, a small ring-shaped tooth is arranged at the joint between the first anchor body on the connecting rod and the ring-shaped sealing platform, and the angle α between the surface of the small ring _- shaped tooth and the center line of the connecting rod is an acute angle. The diameter at the right end is the maximum diameter, and the diameter at the left end of the small annular tooth is smaller than the diameter at the right end. The shape of the annular baffle on the connecting rod in step ① is circular or polygonal. There are several connecting rods described in step ①, and the distance between every two connecting rods is 300-600 mm.

The construction method of the jointless building sandwich composite wall provided by the present invention can make the walls produced on the factory production line seamless during construction, so that the butt walls have the function of integral walls, and the walls The insulation performance and strength of the wall are no different from that of the whole wall. The construction method of the present invention solves the shortcomings of the construction method of the sandwich composite wall in the prior art at the same time, and does not need to install scaffolding outside the outer wall during construction, thereby saving materials, reducing labor intensity, and improving construction safety at the same time , so that the construction and efficiency of the wall are greatly improved. The advantages of the present invention are also reflected in that no wall-through bolts are needed during construction, and after the construction is completed, the sandwich composite wall is an integral wall without holes and secondary repairs, so that the sandwich composite wall has a good thermal insulation effect and the wall does not exist Cracks and water seepage, the surface of the outer wall will never fall off, and the wall construction efficiency is high.

Description of drawings

Accompanying drawing 1 is the body of wall and the cross-sectional structure schematic diagram before pouring the body of wall after the exterior wall body and insulation layer are composited in the construction method of the present invention; Accompanying drawing 2 is the cross-sectional structure schematic diagram of the three-layer composite wall body after pouring; Accompanying drawing 3 is The structural representation of two three-layer composite walls after the ladder ends are placed correspondingly and the formwork and connectors are fixed; Accompanying drawing 4 is a structural representation of one of the connecting rods 6; Accompanying drawing 5 is a right view structural representation of the accompanying drawing 4; Accompanying drawing 6 is a schematic structural view of connecting rod 6 part 2; Accompanying drawing 7 is a right view structural view of accompanying drawing 6; Accompanying drawing 8 is a schematic structural view of enlarged part I in accompanying drawing 4; Accompanying drawing 9 is a schematic view of part II in accompanying drawing 4 Enlarged schematic diagram of the structure; accompanying drawing 10 is a schematic diagram of a cross-sectional structure of a seamless building sandwich composite wall completed by the construction method of the present invention.

detailed description

A construction method of a seamless building sandwich composite wall according to the present invention, the steps are as follows:

① Manufacture the concrete outer wall 1 on the factory production line, compound the thermal insulation layer 2 on the outer wall 1, take several non-metallic connecting rods 6 to penetrate the thermal insulating layer 2, and place the first anchor 12 on the connecting rod 6 into the In the outer wall body 1, the annular baffle plate 9 on the connecting rod 6 is located at the outer edge of the right end of the insulation layer 2, and the annular sealing platform 11 on the connecting rod 6 is located in the insulation layer 2, close to the left end of the insulation layer 2, and connected The second anchor 13 on the rod 6 is located outside the right end of the insulation layer 2, and after the external wall 1 is maintained, a two-layer composite wall is formed;

2. Formwork frame 26 is set on the periphery of insulation layer 2 to form inner wall body cavity 27, the length of formwork frame 26 is shorter than the length of insulation layer 2, pouring concrete in inner wall body cavity 27 forms inner wall body 3, in When pouring concrete, the inner wire sleeve 21 is pre-embedded, the length of the inner wall body 3 is shorter than the length of the insulation layer 2, so that the outer surface of one end of the inner wall body 3 and the outer surface of one end of the insulation layer 2 are in a ladder shape, and the insulation layer 2 is longer than the inner surface. At least one connecting rod 6 is provided at the wall 3, and the formwork frame 26 is removed after the maintenance of the inner wall 3 to form a three-layer composite wall with a ladder shape at one end;

③ Place the ladder-shaped ends of the two three-layer composite walls correspondingly, set the formwork 5 on the outside of the inner wall 3, the formwork 5 is fastened to the inner wall through the connector, and connect one end of the connecting rod 6 with a steel rope 7 or a rod body. Connect with the fixing parts on the outside of the formwork 5 to form a wall joint cavity 4, place two three-layer composite walls correspondingly to form a gap 19, pour concrete into the wall joint cavity 4 and the gap 19, remove the formwork 5, Connecting parts and fixing parts form a seamless building sandwich composite wall. Before pouring concrete, the end of the gap 19 at the outer wall is closed with a non-metallic pad 20 to improve its thermal insulation effect.

The main material of the non-metallic connecting rod used in the construction method of the present invention is a mixture of glass fiber and resin, the mass ratio of glass fiber to resin is 1:0.8-1.5, there can be several combinations within this range, for example: glass Fiber: Resin = 1:0.8, 1:0.9, 1:1, 1:1.1, 1:1.19, 1:1.2, 1:1.28, 1:1.3, 1:1.4 or 1:1.5 etc. The preferred mass ratio is that the mass ratio of glass fiber to resin is 1:1.2. The first anchor 12 on the connecting rod can be deformed with the thermal expansion and contraction of the outer wall, so as not to destroy the structural states of the concrete formed in the outer wall, so that the outer wall is not easy to crack, and the outer wall The outer surface of the wall does not fall off. In the construction method of the present invention, the connecting rod 6 is the connector of the sandwich composite wall, and at the same time, it is also the connector with the formwork in the construction method, and the first anchor 12 on the connecting rod 6 is also a support for the outer wall. The shape sealing platform 11 seals the hole that the connecting rod 6 penetrates the left end of the insulation layer 2 and produces an excellent effect on improving the thermal insulation performance of the sandwich composite wall. While the ring-shaped baffle 9 is positioned, it is convenient for better connection with the inner wall. The preferred shape of the ring-shaped baffle 9 on the connecting rod 6 is circular or polygonal. The steel rope 7 can also be replaced by a fastening rod, and the steel rope 7 is connected with the connecting rod and the formwork respectively to prevent mold expansion during pouring and to fix the formwork. In order to prevent the connecting rod from shifting in the insulation layer, and further ensure the quality of the sandwich composite wall, ring-shaped teeth 10 are arranged in the middle of the connecting rod 6 so that the positions of the connecting rods in the composite wall do not shift. , the ring-shaped tooth 10 is located in the insulation layer 2, the ring-shaped tooth 10 increases the connection strength with the insulation layer, and a further preferred solution is that the angle α between the surface of the ring-shaped tooth 10 and the centerline of the connecting rod 6 is an acute angle, The diameter of the right end of the annular tooth 10 is the maximum diameter, and the diameter of the left end of the annular tooth 10 is smaller than the diameter of the right end. It is used to ensure that the tension generated by pouring concrete during construction does not cause the connecting rod 6 to displace, so that the structures of the components on the connecting rod 6 are firm.

In the construction method of the present invention, the longitudinal cross-sectional shapes of the first anchoring body 12 and the second anchoring body 13 on the connecting rod 6 in the connecting rod step ① are both triangular. The triangular cross-sectional shape makes the supporting force of the first anchor 12 uniform, and further ensures that the outer wall does not generate cracks. When the shapes of the first anchoring body 12 and the second anchoring body 13 are set as flat, and the cross-sectional area of the outer end is larger than the cross-sectional area of the inner end, it is easy to manufacture and reduce the production cost under the condition that the supporting function is basically satisfied. It is convenient for the second anchoring body 13 to be connected with the template through the connecting rod. The outer end referred to here refers to the direction of the two outer edges of the wall body. There are two preferred schemes for connecting the connecting rod 6 to the formwork: one is to open a through hole at the outer end of the second anchoring body 13, and the other is to set the outer end of the second anchoring body 13 on the connecting rod 6 The second rectangular connecting bolt 15, the second rectangular connecting bolt 15 is convenient for fixing the steel rope. At this moment, the inner end cross-sectional area of the second anchoring body 13 is the largest, and the inner end here refers to the second anchoring body 13 and the annular stopper. The connection part of the plate 9, the shape of the second anchor 13 and the structural shape of the second rectangular connecting bolt 15 are shown in FIG. 4 .

In the construction method of the present invention, the thickness of the outer wall body 1 is smaller than the thickness of the inner wall body 3, and the overall thickness of the sandwich composite wall body remains unchanged. Leave enough space for the construction of various decorative materials on the outer surface of the outer wall, and at the same time, reduce the impact of thermal expansion and contraction on the shape of the connecting rod, further enhance the supporting strength of the connecting rod, and further ensure the quality of the outer wall , no cracks will occur within a hundred years.

In order to further ensure the sealing effect of the ring-shaped sealing platform 11, a small ring-shaped tooth 17 is arranged at the joint between the first anchor 12 on the connecting rod 6 and the ring-shaped sealing table 11, and the surface of the small ring-shaped tooth 17 is in contact with the surface of the connecting rod 6. _The included angle α between the centerlines is an acute angle, the diameter of the right end of the small annular tooth 17 is the maximum diameter, and the diameter of the left end of the small annular tooth 17 is smaller than the diameter of the right end. Both the left end and the right end described in the present invention take the position shown in the figure as a reference position.

In the construction method of the present invention, several connecting rods 6 are pre-embedded in the sandwich composite wall, and the distance between every two connecting rods 6 is suitable for 300-600 mm; the preferred scheme is: the distance between the two connecting rods It is 500 millimeters, and it saves quantity than the connectors in the prior art. The setting of this distance is calculated according to various factors such as the structure of the connecting rod 6, load-bearing, support, etc., and is to save materials under the premise of reaching the purpose of the present invention. Preferred option. Among the figure, 8 is a rod body, 14 is a through hole, 18 is the first rectangular connecting bolt 15, 22 is a connecting screw, 23 is a nut, 24 is an outer wall mold base plate, and 25 is an outer wall mold side plate. In the figure, _α3 is the angle between the surface of the ring tooth at the left end of the sealing platform and the center line.

Claims (10)

1. a construction method for jointless architecture interlayer combined wall, is characterized in that: step is as follows:

1. on industrial production line, make concrete exterior wall body (1), at the upper composite heat-insulating layer (2) of exterior wall (1), a peek nonmetal pitman (6) penetrates insulation layer (2), the first anchoring body (12) on pitman (6) is made to insert in exterior wall (1), ring-shaped baffle (9) on pitman (6) is positioned at the right-hand member outer edge place of insulation layer (2), annular seal platform (11) on pitman (6) is positioned at insulation layer (2), near the left end of insulation layer (2), the second anchoring body (13) on pitman (6) is positioned at outside the right-hand member of insulation layer (2), after maintenance exterior wall (1), form two-layer combined wall,

2. pattern plate bolster (26) is set in the periphery of insulation layer (2), form inner wall cavity (27), the length being shorter in length than insulation layer (2) of pattern plate bolster (26), in inner wall cavity (27), concreting forms inner wall (3), the pre-buried interior silk braid (21) when concreting, the length being shorter in length than insulation layer (2) of inner wall (3), one end lateral surface of inner wall (3) and one end lateral surface of insulation layer (2) is made to be scalariform, the position that insulation layer (2) is longer than inner wall (3) is at least provided with a pitman (6), maintenance inner wall (3) is stripping frame (26) afterwards, form three layers of combined wall that one end is scalariform,

3. the scalariform end of two pieces of three layers of combined walls correspondence is placed, in the arranged outside template (5) of inner wall (3), template (5) by connector and inner wall fastening, with steel cable (7) or the body of rod, the fixture of pitman (6) one end with template (5) outside is connected, form body of wall contact cavity (4), two pieces of three layers of combined wall correspondences form gap (19) after placing, with concreting body of wall contact cavity (4) and gap (19), stripping (5), connector and fixture after maintenance, form jointless architecture interlayer combined wall.

2. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: step 1. described in pitman (6) middle part ring tooth (10) is set, ring tooth (10) is positioned at insulation layer (2).

3. the construction method of a kind of jointless architecture interlayer combined wall according to claim 2, it is characterized in that: the angle α of the surface of ring tooth (10) and the centreline space of pitman (6) is acute angle, ring tooth (10) right-hand member diameter is maximum gauge, and the left end diameter of ring tooth (10) is less than right-hand member diameter.

4. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: the first anchoring body (12) on step pitman 1. (6) and the second anchoring body (13) vertical sectional shape are triangle.

5. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, it is characterized in that: upper first anchoring body (12) of setting of pitman (6) that step is 1. described and the shape of the second anchoring body (13) are flat-shaped, and its outboard end cross-sectional area is greater than medial extremity cross-sectional area.

6. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: the external end head of upper the second anchoring body (13) arranged of pitman (6) that step is 1. described arranges the second rectangle coupling bar (15).

7. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: the thickness of the exterior wall (1) in the architecture interlayer combined wall that 4. step obtains is less than the thickness of inner wall (3).

8. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, it is characterized in that: step 1. in the first anchoring body (12) on pitman (6) with annular seal platform (11) junction, little ring tooth (17) is set, the angle α of the surface of little ring tooth (17) and the centreline space of pitman (6) ₂for acute angle, the right-hand member diameter of little ring tooth (17) is maximum gauge, and the left end diameter of little ring tooth (17) is less than right-hand member diameter.

9. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: step 1. in the shape of ring-shaped baffle (9) on pitman (6) be circular or polygon.

10. the construction method of a kind of jointless architecture interlayer combined wall according to claim 1, is characterized in that: step 1. described in pitman (6) for several, the distance between every two pitmans (6) is 300-600 millimeter.