TWI632274B - Suspension reinforcement working stand and construction method utilized thereof - Google Patents

Abstract

The suspended steel work frame of the present invention comprises a screw, a hanger and a section steel. The screw system is arranged to extend away from the surface of the floor. The screw has a first end and a second end on the opposite side of the first end. The hanging piece is arranged on the floor and connected to the first end. The profile steel is disposed perpendicular to the direction in which the screw extends and is fixed to the second end.

Description

Suspended steel work frame and construction method using same

The present invention relates to a steel bar work frame; in particular, the present invention relates to a suspended steel bar work frame and a construction method using the suspended steel bar work frame.

In building construction, the quality of steel bar binding is closely related to structural stability. Some structures are formed by the aid of a support. For example, when constructing a raft foundation in the reverse construction method, an angle iron or a steel work frame is used to perform the ground beam reinforcement tying operation, and the steel work frame is erected on the outsole and the upper reinforcement is supported by the steel work frame. After the completion of the steel bar tying, the group mold and the pouring operation are performed, and the steel bar work frame is sealed in the structure body. In other words, existing construction methods cannot recover these supports (and the components they are mated with), which will increase the cost of material use. In view of this, the existing construction method of steel bar lashing still needs to be improved.

It is an object of the present invention to provide a suspended steel work frame that can be recycled for use in material cost savings.

Another object of the present invention is to provide a construction of a suspended steel work frame The method is combined with the reverse working method to improve the construction efficiency.

Suspended steel work frames contain screws, hangers and sections. The screw system is arranged to extend away from the surface of the floor. The screw has a first end and a second end on the opposite side of the first end. The hanging piece is arranged on the floor and connected to the first end. The profile steel is disposed perpendicular to the direction in which the screw extends and is fixed to the second end. In one embodiment, the suspended steel work frame further includes a retractor, and the screw includes a separated first sub-bar body and a second sub-rod body. The retractor connects the first sub-bar body and the second sub-bar body, and the relative distance between the two sub-bar bodies can be adjusted by the retractor to change the length of the screw.

The underground layer construction method comprises: hanging a suspended steel work frame on the floor; tying the steel bar in a pre-formed range between the steel section and the excavation face; pouring concrete between the preformed ranges to form a structure; After that, remove the suspended steel work frame.

10‧‧‧suspension steel work frame

20‧‧‧ Floor

30‧‧‧Excavation surface

40‧‧‧Cantilever beam

42‧‧‧Reserved holes

50‧‧‧Support wall

60‧‧‧ Basic Edition

62‧‧‧Ground beams

64‧‧‧Top version

70‧‧‧ template

72‧‧‧ Anglewood

80‧‧ ‧ steel pipe

110‧‧‧ screw

111‧‧‧ first end

112‧‧‧ second end

121‧‧‧First sub-rod

122‧‧‧Second sub-bar

123‧‧‧First adjustment end

124‧‧‧second adjustment end

130‧‧‧ hanging pieces

132‧‧‧ hollow area

150‧‧‧ steel

152‧‧‧Installation surface

154‧‧‧Keyhole

156‧‧‧Adjustment hole

160‧‧‧ nuts

170‧‧‧Steel

601‧‧‧Upper ribs

603‧‧‧ stirrups

605‧‧‧lower ribs

607‧‧‧ ribs

609‧‧ ‧ steel bars

A‧‧‧ extending direction

b‧‧‧Extension direction

C‧‧‧direction

1 is a schematic view of an embodiment of a suspension type steel work frame according to the present invention; FIG. 2 is a schematic view showing an embodiment of the assembly of the hanging piece and the screw; FIG. 3 is a schematic view of an embodiment of the assembly of the steel and the screw; FIG. 5 is a schematic view of another embodiment of a steel frame according to another embodiment of the present invention; FIG. 6 is a schematic view of another embodiment of a suspended steel work frame according to the present invention; FIG. Schematic diagram of an embodiment of a hanging steel work frame disposed on a floor; FIG. 8 is a flow chart of an embodiment of a method for constructing a underground layer of the present invention; and FIG. 9 is a detailed flow chart of a method for hanging a suspended steel work frame in a method of underground layer construction Figure 10 is a flow chart showing another embodiment of the underground layer construction method including the suspension steel frame hanging step; 11 is a detailed flow chart of a method for forming a subterranean formation comprising a structure; FIG. 12 to FIG. 20 are schematic views showing a construction of a structure for forming a subterranean formation according to the present invention; and FIG. 21 is a schematic diagram of a method for forming a subterranean formation including a step of forming a structure. A flow chart of an embodiment; FIG. 22 to FIG. 25 are schematic views showing the construction of a structure formed by a subterranean layer construction method of the present invention.

The invention provides a suspended steel work frame, which can provide temporary support during the construction process of the reverse construction method (for example, steel bar binding operation), and can be recycled after the structure is completed. 1 is a schematic view of an embodiment of a suspended steel work frame 10 of the present invention. As shown in FIG. 1, the suspended steel work frame 10 includes a screw 110, a hanger 130, and a profile 150. In the embodiment of Fig. 1, the screw 110 is an elongated rod body that is disposed erected in space along its axial direction. The screw 110 has a first end 111 and a second end 112 on the opposite side of the first end 111. The hanger 130 is coupled to the first end 111 of the screw 110. Please refer to FIG. 2, which is a schematic diagram of an embodiment of assembling the hanger 130 and the screw 110. As shown in Fig. 2, the hanger 130 is generally cylindrical and has a hollow region 132 therein, for example, an internal tooth can be formed for engagement. The first end 111 of the screw 110 extends into the hollow region 132, whereby the fixing of the screw 110 and the hanger 130 is achieved.

On the other hand, the profiled steel 150 is fixed to the second end 112 of the screw 110. Please refer to Figure 1 and Figure 3. In Fig. 1, the profiled steel 150 on the front side is shown. As shown in Fig. 1, the profiled steel 150 is disposed in a horizontal manner in space. With respect to the screw 110, the profile 150 is disposed perpendicular to the extending direction of the screw 110 (the axial direction of the screw). In Fig. 3, the profile steel 150 on the back side is shown. As an example of assembling the profiled steel 150 and the screw 110 as shown in FIG. 3, the profiled steel 150 has a mounting surface 152 and a keyhole 154 formed in the mounting surface 152. In one embodiment, the suspended steel work frame can include a nut 160. As shown in FIG. 3, the second end 112 of the screw 110 extends through the mounting surface 152 from the locking aperture 154, and the nut 160 is attached to the second end 112 from the opposite side of the mounting surface 152. Thereby achieving the screw 110 and Fixing of profile steel 150.

In other embodiments, the screw and the section steel may be otherwise fixed, for example, the screw near the second end forms an enlarged portion that is slightly larger in diameter than the keyhole, and is detachably designed in the enlarged portion from the other portions of the screw. When the screw is installed on the steel profile, the screw is inserted into the lock hole, and the enlarged portion is assembled from the other side of the mounting surface to achieve the fixing of the screw and the steel. It should be added that the section steel is angle steel or channel steel, and its sectional shape is not limited to the state shown in FIG.

4 is a schematic view showing an embodiment in which the suspended steel work frame 10 of FIG. 1 is disposed on the floor 20. As shown in FIG. 4, the suspended steel work frame 10 is suspended from the floor 20 and is located between the floor 20 and the excavation face 30. The aforementioned hanger (not shown) is provided on the floor panel 20. For example, the hanger is pre-buried inside the floor 20 before the floor 20 is formed. The screw 110 is disposed to extend away from the surface of the floor 20. The two ends of the screw 110 are respectively connected with a hanging piece and a steel 150 to form a suspended steel work frame 10. As shown in FIG. 4, a plurality of suspended steel work frames 10 may be employed, each of which is disposed perpendicular to the extending direction of the screw 110, and each of the steel bars 150 are juxtaposed to each other. For example, the screw 110 has an extending direction a, the steel 150 is disposed along the extending direction b, and the direction c in which the steel 150 is aligned is juxtaposed along the extending direction b of the transverse steel 150.

In one embodiment, the screw systems are disposed in pairs on a profiled steel, such as a screw on each of the left and right sides of the profiled steel. In other embodiments, the arrangement of the screw can also be adjusted according to requirements, for example, the screw is fixed in the middle of the steel, and the steel is connected to the screw by the steel wire on both sides.

The suspended steel work frame can adjust the flatness of the steel. For example, at the second end 112 of the screw, by the aforementioned nut 160 (refer to FIG. 3), the depth of the screw 110 extending into the lock hole 154 is adjusted. In addition, the profile steel can also be adjusted for flatness through the first end of the screw. For example, changing the depth at which the first end of the screw extends into the hanger. In other embodiments, the adjustment of the flatness can be performed in combination with the above two methods.

In addition, the position of the screw on the profile is adjustable. Please refer to Figure 5. FIG. 5 is a schematic view of another embodiment of a profiled steel 150. As shown in FIG. 5, the profiled steel 150 has an adjustment hole 156 formed in the mounting surface 152. The adjustment holes 156 are distributed on one side of the lock hole 154 along the extending direction b of the steel 150. In the embodiment of FIG. 5, one side of the profiled steel 150 defines two adjustment holes 156 on the mounting surface 152, which are located on the left and right sides of the lock hole 154. The pitch of the keyhole 154 to the two side adjustment holes 156 is equal. Similarly, the other side of the profiled steel 150 (not shown) may also be of the same configuration. It should be understood that the number and spacing of the adjustment holes 156 are not limited thereto. With this design, the position of the screw can be changed depending on the situation at the construction site. Taking the screw 110 in pairs in the form of the profiled steel 150 as described above (refer to FIG. 4), the screw 110 on both sides of the profiled steel 150 can adjust the width between the screws on both sides by the adjustment hole 156 to increase the elasticity of use.

FIG. 6 is a schematic view of another embodiment of the suspended steel work frame 10 of the present invention. As shown in FIG. 6, the difference from the foregoing embodiment is that the suspended rebar workbench 10 includes the retractor 170 to connect the separated screws 110. Specifically, the screw 110 is a separate elongated rod assembly including a first sub-rod 121 and a second sub-rod 122. The first sub-rods 121 are disposed in a manner that they are erected in space along the axial direction thereof, and the second sub-rods 122 are arranged in parallel with the extending direction of the first sub-rods. As shown in FIG. 6 , the first sub-rod 121 has a first adjustment end 123 , and the second sub-rod 122 has a second adjustment end 124 disposed opposite to the first adjustment end 123 .

As shown in FIG. 6, the retractor 170 connects the first sub-rod 121 and the second sub-bar 122, that is, the two sub-bars are connected to the first adjustment end 123 and the second adjustment end 124. The distance between the first adjustment end 123 and the second adjustment end 124 changes as the first sub-rod 121 and the second sub-bar 122 move in the extending direction of the screw 110. For example, the suspended steel work frame 10 can move a portion of the first sub-rod 121 out of the retractor 170 from the retractor 170. At this time, the first adjustment end 123 is away from the second adjustment end 124, and the first sub-rod 121 is extended. As the length of the retractor 170 increases, the distance from the hanger 130 to the profile 150 increases. With this design, the overall length of the suspension rebar work frame 10 can be adjusted by the retractor 170.

In addition, in the embodiment of FIG. 6, the first sub-rod 121 is connected to the hanger 130 at one end opposite to the first adjustment end 123, and the second sub-bar 122 is fixed to the profile steel at one end opposite to the second adjustment end 124. . In other embodiments, the suspended steel work frame can be designed such that the hanger and the steel have the same fixing manner, so that the first and second sub-rods can be replaced with different positions.

Overall, the flatness of the section steel can be adjusted by using a bellows, in addition to being adjustable on one side of the hanger or one side of the profile as previously described. For example, a retractor is used as a coarse adjustment, and one side of the hanger or one side of the profile is used for fine adjustment. Thereby, the suspended steel work frame can be adjusted to different degrees according to the construction requirements to improve the accuracy of the adjustment.

FIG. 7 is a schematic view showing an embodiment in which the suspended steel work frame 10 of FIG. 6 is disposed on the floor 20. As shown in FIG. 7, the suspended steel work frame 10 is suspended from the floor 20. Similarly, the hanger system is placed on the floor panel 20. The first sub-rod 121 and the second sub-rod 122 are disposed to extend away from the surface of the floor 20, and the first sub-rod 121 is connected to the hanger. The second sub-rods 122 are arranged in parallel with the extending direction a of the first sub-rods 121, and the first sub-rods 121 and the second sub-rods 122 are connected by the expander 170. The second sub-rod 122 is fixed to the profiled steel 150 opposite to the end of the first sub-rod 121 to constitute the suspended rebar work frame 10. As shown in Fig. 6, a plurality of suspended rebar work frames 10 may be employed, each of which is disposed perpendicular to the direction a of extension of the screw 110, and each of the steel bars 150 is juxtaposed to each other.

8 is a flow chart of an embodiment of a method for constructing a subterranean formation according to the present invention. As shown in FIG. 8, the underground layer construction method includes the step S10: hanging the suspended steel work frame on the floor. At step S12, it is confirmed whether the setting of the suspended rebar work frame reaches a predetermined demand. The predetermined demand refers to whether the length of the screw is sufficient, and whether the number of the suspended steel work stands is sufficient, and the number thereof varies depending on the size of the structure to be constructed. For example, as shown in FIG. 4, a plurality of suspended steel work frames are disposed along the direction c. If the required demand is not met, continue to set up the suspended steel work frame. on the contrary, If the predetermined demand has been reached, step S20 is performed.

In step S20: the reinforcing bars are tied in the preformed range. The pre-formed range refers to the location of the structure to be constructed. Specifically, after confirming the structure to be constructed, the suspended steel work frame is hung, and then the steel bars are tied in a pre-formed range between the steel and the excavation surface. Next, in step S30, concrete is poured. Concrete is placed between the preformed ranges to form a structure. Next at step S40: the suspended steel work frame is removed. In this way, the suspended steel work frame can be removed and recycled to other locations for assembly, which can save material costs.

Figure 9 is a detailed flow chart of the underground layer construction method including the hanging steel frame lifting step. As shown in Fig. 9, in the suspension type steel frame installation stage, steps S101, S103, S105, and S107 are included. In step S101, a hanging member is set on the floor. For example, the slings are pre-buried inside the slab before the slab is formed. In step S103, the setting screw is extended away from the surface of the floor. The screw is arranged in such a manner that its screw is erected in space in its axial direction. Next, the two ends of the screw are combined, and in step S105, the hanger and the first end are connected. In step S107, a profile steel is set and the steel section is fixed to the second end. After the suspension type steel work frame is set, the structural body is constructed by the above steps S12, S20, S30, and S40, and then the suspended steel work frame is removed and recovered.

In one embodiment, the screw systems are disposed in pairs in a profiled steel. In the section of fixing the steel and the screw, the screw may further comprise: the screws are arranged in pairs on the steel. In addition, a plurality of suspended steel work frames can be used, that is, the above steps S101, S103, S105, and S107 are repeated to form a plurality of suspended steel work frames. The step of setting each steel section may further include: arranging the steel profiles in parallel with each other.

In one embodiment, the profile is attached to the second end of the screw. In the steel and screw fixing stage, the method further comprises: forming a locking hole on the mounting surface; inserting the second end of the screw from the locking hole through the mounting surface; and locking the second end from the opposite side of the mounting surface with the nut. In other embodiments, other holes may be formed on one side of the above-mentioned keyhole. In the steel and screw fixing stage, the method further includes: forming at least one adjusting hole on the mounting surface, and adjusting the hole system on one side of the locking hole. For example, along the direction of extension of the section steel Distributed on the left and right sides of the keyhole. With this design, the position of the screw fixed on the profile steel can be changed depending on the situation at the construction site.

Figure 10 is a flow chart showing another embodiment of the underground layer construction method including the suspension steel frame hanging step. The screw is a separate elongated rod assembly and is connected by a retractor. As shown in FIG. 10, in step S101, a hanger is provided on the floor. In the suspension steel frame setting stage, the method further includes a step S1031: setting the first sub-bar body and the second sub-bar body to extend away from the floor surface. The first sub-bar body and the second sub-bar body. The first sub-rods are disposed in a manner that they are erected in space along the axial direction thereof, and the second sub-rods are arranged in parallel with the extending direction of the first sub-bars. The first sub-rod has a first adjustment end, and the second sub-rod has a second adjustment end disposed opposite to the first adjustment end.

In step S1033, the first sub-bar body and the second sub-bar body are connected by a retractor. In one embodiment, one end of the first sub-rod opposite to the first adjustment end is connected to the hanger, and one end of the second sub-rod opposite to the second adjustment end is fixed to the steel. The first adjustment end and the second adjustment end are connected by a retractor. The overall length of the suspended rebar work frame may vary as the first sub-bar body and the second sub-rod body move in the direction in which the screw extends. For example, when the retractor adjusts the first sub-bar body and the second sub-bar body to be close to each other, the length of the suspended rebar work surface from the floor panel toward the lower excavation surface is shortened, and the level of the profile steel is increased.

As shown in FIG. 10, the above steps S105, S107, and step S12 are performed. When the setting of the suspended steel work frame has reached the predetermined demand, step S14 is performed. At step S14, it is confirmed whether the steel is flat. For example, it is confirmed by a laser device whether the horizontal heights of the respective steel profiles are uniform. If the section steel is not flat, proceed to step S109 to adjust the first sub-bar body and the second sub-bar body. For example, the amount of protrusion of the screw is adjusted by a retractor to set the profile steel flat. If the profiled steel is flat, then steps S20, S30, and S40 are performed to construct the structure, and then the suspended steel bar work frame is removed and recovered.

Figure 11 is a detailed flow diagram of a method for forming a subterranean formation including a structure forming step Figure. Figure 11 is a flow chart showing the construction of a suspended steel work frame combined with an infrastructure. The underground layer construction method is a construction method between the upper floor slab and the excavation surface below the floor after the underground layer is excavated. In other words, the suspended steel work frame can be used in conjunction with the reverse work method. When constructing the floor in the basement, the hangers are placed on the floor (for example, pre-buried in the floor), and the suspended steel frame is placed after the excavation below the floor. Hanging work.

As shown in Fig. 11, after the suspension type steel work frame is installed (steps S10 to S12), the work of the building structure is performed. In step S201, a plurality of upper ribs are disposed on the steel section. In step S203, a plurality of stirrups are disposed between the upper layer rib and the excavation surface. In step S205: a plurality of lower layers are set. In step S207: a plurality of ribs are set.

Please refer to the construction diagram of Figure 12~15. As shown in Fig. 12, the floor 20 is completed and excavated to the excavation surface 30 in the space below. The PC is placed on the excavation face 30 for finishing. A suspended steel work frame 10 is suspended below the floor 20, and includes the aforementioned screw 110, a retractor 170, a steel 150, and the like. In Fig. 12, a suspended steel work frame 10 having a retractor 170 is employed, but is not limited thereto. After the suspension steel frame 10 is set, a plurality of upper ribs 601 are disposed on the steel 150. For example, the upper layer rib 601 is disposed along the direction c in which the steel bars 150 are arranged.

As shown in FIG. 13, a plurality of stirrups 603 are disposed between the upper layer rib 601 and the excavation surface 30. As shown in FIG. 14, a plurality of lower ribs 605 are disposed on one side of the stirrup 603 near the excavation face 30, and as shown in FIG. 15, a plurality of ribs 607 are disposed on one side of the stirrup 603 near the lower rib 605. Thereby, the work in the pre-formation range of the structure can be supported by the upper floor slab together with the suspended steel work frame of the present invention.

Returning to Figure 11, the operation of the building structure then proceeds to the process of pouring the concrete and subsequently recovering the suspended steel work frame. In step S301, concrete is poured to form a base plate. In step S303, concrete is poured to form a ground beam. At step S40: the suspended steel work frame is removed. At step S50: the concrete is poured to form a top plate.

Please refer to the construction diagram of Figure 16~20. As shown in Fig. 16, a concrete plate 60 is formed by pouring concrete between the plate rib 607 (refer to Fig. 15) and the excavation face 30. Next, as shown in FIG. 17, concrete is poured on the base plate 60 to form the ground beam 62. Specifically, the ground beam 62 is formed by pouring concrete between the preset height below the upper rib 601 to the base plate 60. In other words, the preset height is prevented to prevent the pouring operation from splashing the suspended steel work frame 10 and the space for removing the suspended steel work frame 10 is reserved. As shown in Fig. 18, the suspended steel work frame 10 is removed and recovered. It should be added that the suspended steel work frame 10 can also be removed after the completion of the basic plate 60 (Fig. 16), and is not limited to the order described above. 19 to 20 illustrate a structure applying process of the upper layer rib 601. As shown in FIG. 19, a plurality of reinforcing bars 609 are disposed near the plane of the upper layer rib 601. As shown in Fig. 20, concrete is poured to form a top plate 64.

Figure 21 is a flow chart showing another embodiment of the method for forming a subterranean formation comprising a structure forming step. Figure 21 shows the flow of the barrier in the setting range of the suspended steel work frame and the construction of the suspended steel work frame for other structural construction. As shown in FIG. 21, after the installation of the hanger is completed (step S101), in step S1032, a reserved hole is provided in the cantilever beam module, and the screw is disposed to extend away from the surface of the floor. At step S1034, the screw is passed through the reserved hole. In step S105, the hanger is connected to the first end. In step S1072, the profile steel is placed on the side of the cantilever beam module opposite to the floor, and the steel and the second end are fixed. In step S1074, the screw and the profile steel jointly support the cantilever beam module, and in step S12, it is judged whether the setting of the suspended steel bar work frame reaches a predetermined demand.

Please refer to the construction diagrams of Figures 22~23. As shown in Fig. 22, the floor 20 is completed and excavated to the excavation face 30 in the space below. There is a barrier (cantilever beam) on the route between the floor 20 and the excavation face 30 where the suspended steel work frame 10 is to be placed, that is, a dotted line. The range R indicated by the dashed line indicates that the cantilever beam has not been formed. For example, the cantilever beam is in the module stage, the formwork is erected and the reinforcement and the concrete are not yet tied. At this time, the suspension type steel work frame 10 and the cantilever beam module are projected to overlap on the excavation surface. For example, the extension of the screw 110 on one side of the suspended steel work frame 10 Interference with the cantilever beam in the extension direction. Before the screw 110 is disposed, the reserved hole 42 may be disposed in the position of the screw corresponding to the projection overlap in the cantilever beam module, and the screw 110 with the projection overlap is passed through the reserved hole 42. The section 150 is then placed on the side of the cantilever beam module opposite the floor panel 20. As shown in FIG. 22, the cantilever beam module is supported by the screw 110 and the profiled steel 150. In an embodiment, additional support may be provided between the profiled steel and the excavation face to provide additional support. For example, a steel pipe is provided under the profile steel to provide support, and a steel pipe is provided under the angle plate formed outside the preformed range of the cantilever beam to provide support. As shown in Fig. 23, a cantilever beam 40 is formed after being placed. The suspended steel work frame 10 provides support for the cantilever beam 40, and after the cantilever beam is placed, the excavation work can be continued toward the space below the original excavation face.

Returning to Fig. 21, after the suspension type steel work frame is set, the suspended structure work frame can be further used for the work of the building structure. In step S211, the reinforcing bars are tied in the preforming range of the supporting wall. In step S311, concrete is poured to form a support wall. After the lower support wall is completed, in step S40: the suspended steel work frame is removed.

Please refer to the construction diagram of Figure 24-25. Similarly, work in the pre-formed range of the structure can be supported by the upper slab in conjunction with the suspended rebar work frame of the present invention. For example, the reinforcing bars are tied between the side of the profiled steel and the undercut surface (not shown). As shown in Fig. 24, concrete is poured between the cantilever beam 40 and the excavation surface to form the support wall 50. After the wall 50 to be supported is formed, the suspended steel work frame 10 is removed and recovered. As shown in FIG. 25, after the support wall 50 below the cantilever beam 40 is completed, the building support wall 50 continues to be built over the cantilever beam 40.

In summary, the suspension type steel work frame of the present invention has a plurality of designs with adjustable length and position, and provides flexibility in use. The suspended steel work frame of the present invention can also be used as a temporary support platform before the structural body is formed in the reverse working method, and the suspended steel work frame can be recovered to save costs with the completion of the structure. In addition, the suspended steel work frame of the present invention can also be incorporated into a reverse working method, such as providing support for the barrier prior to molding.

The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

Claims (13)

A suspended steel work frame suspended from a first floor panel, the suspended steel work frame comprising: at least one screw disposed to extend away from a surface of the floor, the screw having a first end and an opposite side of the first end a second end; at least one hanging member disposed on the floor, and the hanging member is connected to the first end; a profile steel disposed perpendicular to the extending direction of the screw and fixed to the second end; and a retractor The screw includes a first sub-bar body and a second sub-bar body, the first sub-rod body has a first adjustment end and the second sub-rod body has a second adjustment end and the first adjustment The ends are oppositely disposed, the retractor is connected to the first sub-bar body and the second sub-bar body, and the distance between the first adjustment end and the second adjustment end is along with the first sub-bar body and the second sub-bar The body changes along the direction in which the screws extend. A suspended steel work frame according to claim 1, wherein the screw is disposed in pairs in the steel. The suspension type steel work frame of claim 1, further comprising a nut having a mounting surface and a locking hole formed on the mounting surface, the second end of the screw penetrating from the locking hole a mounting surface, and the nut locks the second end from an opposite side of the mounting surface. The suspended steel work frame of claim 3, wherein the steel has a horizontal extending direction and at least one adjusting hole is formed on the mounting surface, and the adjusting hole is distributed in the horizontal direction of the locking hole. side. The suspended steel work frame of claim 1, wherein the steel is angle steel or channel steel. A method for constructing a subterranean formation, which is a construction method between one of the upper floors and an excavation surface below the floor after excavation in the underground layer, and using at least one of claims 1 to 5 A suspended steel work frame, wherein the screw comprises a first first sub-bar body and a second sub-rod body, the first sub-rod body has a first adjustment end and the second sub-rod body has a second The adjustment end is disposed opposite to the first adjustment end, and the underground layer construction method comprises the following steps: Suspending the suspended steel work frame on the floor; connecting the first sub-bar body and the second sub-rod body with a retractor; moving the first sub-bar body and the second sub-subject along the extending direction of the screw a rod body for adjusting a distance between the first adjustment end and the second adjustment end; tying the steel bar to a pre-formed range between the steel profiles and the excavation surface; pouring concrete between the preformed ranges to form a structure; and removing the suspended steel work frame. The method for constructing a subterranean floor according to claim 6, wherein the hanging steel frame hanging step further comprises: providing the hanging member on the floor; the screw is disposed to extend away from the surface of the floor, the screw has a first end and a second end on the opposite side of the first end; connecting the hanger to the first end; and providing the profile perpendicular to the direction of extension of the screw and securing the profiled steel and the second end. The method for constructing a subterranean floor according to claim 7, wherein the floor slab is suspended with a plurality of suspended steel work frames, and the step of fixing the steel and the screw further comprises: arranging the screws in pairs for each steel; and The steel profiles are arranged side by side. The method of claim 7, wherein the slab has a cantilever beam between the slab and the excavation surface, and the cantilever beam and the screw overlap on the excavation surface, the suspended steel frame hoist The step of hanging further comprises: providing a reserved hole at a position of the screw corresponding to the projected overlap of the cantilever beam; passing the screw that projects the overlap through the reserved hole; and setting the profiled steel on the cantilever beam opposite to the floor plate Side; The cantilever beam is supported by the screw and the steel. The method for forming a subterranean formation according to claim 9, wherein the step of forming the structure further comprises: pouring concrete between the cantilever beam and the excavation face to form a support wall. The method for constructing a subterranean floor according to claim 7, wherein the steel has a mounting surface, and the step of fixing the steel and the screw further comprises: forming a locking hole on the mounting surface; the second end of the screw is penetrated from the locking hole The mounting surface; the second end is locked by a nut from an opposite side of the mounting surface. The method for constructing a subterranean layer according to claim 11, wherein the steel has a horizontal extending direction, and the step of fixing the steel and the screw further comprises: forming at least one adjusting hole on the mounting surface, the adjusting hole being distributed along the horizontal extending direction One side of the keyhole. The method for forming a subterranean layer according to claim 6, wherein the step of forming the structure further comprises: providing a plurality of upper ribs on the steel; and providing a plurality of stirrups between the upper ribs and the excavation surface; a plurality of lower ribs are disposed on a side of the rib near the excavation surface; a plurality of ribs are disposed on a side of the ribs adjacent to the lower ribs; and a concrete is poured between the ribs and the excavation surface to form a foundation And forming a ground beam by pouring concrete between a predetermined height below the upper rib to the base plate.