TW201814116A - Special-shaped steel bar, reinforced truss and floor board mold suspension constructing method system unit using the reinforced truss capable of simplifying and standardizing the assembling process of the steel bar structure - Google Patents

Abstract

The purpose of the present invention is to provide a special-shaped steel bar, which serves as a steel bar for reinforced concrete and, more particularly, as a construction material for the upper and lower spring steel bars of a reinforced truss. The constructing method makes use of hot rolling and flattening technology with a cross-section reduction rate to finally form a special-shaped steel bar with a recessed strip groove or groove slot having a suitable width, depth and cross-sectional shape along the length direction on the circumference of the long round rod of the steel bar. The special-shaped steel bar is provided with helical protrusions or recessed lines at regular intervals along the length direction on the outer circumferential surface of the round rod of the steel bar and the surface of the recessed strip groove or groove slot. The special-shaped steel bar of the present invention is characterized in that a reinforced truss is assembled and formed by using web steel bars for serving as the basic unit of the steel bar structure of the reinforced concrete member, so that the assembling process of the steel bar structure can be simplified and standardized, and thus the house construction industry can be industrialized to achieve superior construction capability and efficiency thereby greatly shortening the construction period, reducing the construction costs and improving the consistency of construction quality.

Description

Special-shaped steel bars, steel trusses, and floor slab hanging formwork method system units using the same

The invention relates to a kind of reinforcing steel used for construction engineering, such as civil engineering, building construction, and the like, especially as a structural material for reinforcing steel truss upper and lower chord steel bars.

Ordinary special-shaped steel bars for traditional reinforced concrete, such as the hot-rolled ordinary special-shaped steel bars (40) shown in FIG. 15, are formed by spiral rolling on the outer peripheral surface (21) of the round rods at a certain interval by hot rolling. Joint (41) to enhance the binding force between it and concrete; coupled with the gap between the upper and lower rolling rollers for the hot rolling delay, two rib arches (42) will be generated in the rolling direction.

In the traditional reinforced concrete house building, the reinforced structure of the column and beam is made of ordinary special-shaped steel bars. Its components are mainly three kinds of main bars, stirrups and tie bars. Among them, the stirrups and tie bars are structured according to the structure. The design and construction drawings say that reinforcement bars are preformed to form stirrups and tie bars, and then a plurality of column main bars or beam main bars pass through the side of the dense inner ring of the stirrups, and tie bars are added and bound to form a reinforced structure.

Reinforced structures of traditional plate-shaped reinforced concrete members, such as wall panels and floor slabs, are arranged with a plurality of ordinary special-shaped steel bars that are criss-crossed at a certain interval and are fully bound to form a single-row or double-row mesh-shaped reinforced structure.

The conventional assembly methods of the above-mentioned various conventional steel structures are a combination of two ordinary shaped steel bars that intersect longitudinal bars and horizontal bars that cross each other to form a steel bar structure. The steel bar workers manually use thin iron wires to cross each cross. The comprehensive implementation of the steel bar binding work; its shortcomings are as follows: the construction process is complicated, and in the case of a large number of main bars and dense spacing of hoop bars, the implementation is not easy, resulting in a large amount of labor costs, long construction period, strong labor force, work Thanks to the hard work and the uneven quality of the rebar workshops, it is not easy to control the consistency of the construction quality on site.

To sum up, the conventional reinforced structures assembled with ordinary special-shaped steel bars and their assembly methods have complex structures; a reinforced structure with a simple structure and good drop strength is currently urgently needed.

Nowadays, there are those who use conventional special-shaped steel bars to form a traditional steel truss and install it in a reinforced concrete structure. The manufacturing method is to weld multiple web members to the upper and lower chord bars by welding.

The above conventional steel truss, the upper and lower chord steel bars and web steel bars are made of ordinary special-shaped steel bars (40), and the cross sections are all round steel bars, which are overlapped with each other on the side as shown in Figures 13B and 13C As shown, they are fixedly connected to each other by welding, so that the following are missing:

1. Requires a higher level of welding process.

2. It is necessary to comprehensively perform welding operations at each overlap, and the number of overlaps is huge, which consumes a lot of technical and labor costs and has a long construction period.

3. It is not easy to maintain the consistency of welding quality in mass production. In the process of concrete pouring, there are often welding points (48) that cause de-soldering and damage the bearing strength of reinforced concrete members. In short, the traditional reinforced truss made of ordinary shaped steel bars has low efficiency, poor quality, cannot be quantified in production, and is inconsistent with economic benefits.

Conventionally, there are those who use ordinary special-shaped steel bars (40) to form a triangle-shaped steel bar truss in side view, as shown in FIG. 14. In the figure, it includes two webs (93), two lower chords (94), one upper chord (95), and other reinforcing bars, and two supporting vertical bars (96) and two supporting horizontal bars (97). ); According to the design and construction drawings of a total of nine steel bars described above, they are overlapped with each other on the side, and are fixedly connected and assembled using a resistance welding method to form a triangle-shaped steel truss, which has the following defects:

1. The structure is more complicated.

2. Large current power is required and energy is wasted.

3. Desoldering often occurs at welding points during concrete pouring construction.

4. The diameter of the chord rebar should not be too large (usually below 10 to 12mm), and the difference between the diameter of the chord and the web rebar should not be too large, otherwise the resistance welding will have difficulties and the efficiency and yield will be low Factors limit the scope of its application.

5. Generally only set to apply to the reinforced structure of the house floor slab.

6. As mentioned above, a total of nine steel bars are overlapped with each other on the side, and are fixedly assembled using the resistance welding method to form a reinforced truss. The strength of the welding point is often uneven, which causes its reduced strength and bearing capacity to be welded by each weld. The quality of the point is limited, and the bearing capacity that should be given in the mechanical design of the steel truss cannot be fully utilized; the resistance welding method is not easy to maintain the consistency of the quality in the process of joining two round rods; therefore, it is practically applied Rebar trusses are often densely arranged, causing waste.

In view of the above-mentioned shortcomings in the prior art, the object of the present invention is to provide an innovative special-shaped steel bar as a structural member of a steel truss upper and lower chord steel bar, which is assembled with a web bar steel bar to form a steel truss, and is arranged on a reinforced concrete member In the reinforced structure.

The reinforced truss of the present invention comprises: one of the upper chord, the lower chord, and the web. One of the webs is made of ordinary special-shaped steel, and the steel is made by a professional automated steel processing machine according to the structural design and construction drawings. The bending is performed to form a wavy web member, which is characterized in that the outer ends (wave crests) of the left and right bending areas are roughly on the two straight lines parallel to each other on the left and right sides of the longitudinal direction. The two straight lines that are parallel to the right are on the same plane; the web steel bars are wavy, and the distance (wavelength) between each wave is approximately equal; Every other "space" on the line, the size of this "space" is equal to the wavelength size of the web reinforcement that is matched with it; the "outer diameter (or diameter) of the web reinforcement that matches with it is described in the description of the following instructions ", Or radius size" "means the maximum outer diameter (or diameter, or radius) of the web reinforcement, that is, the outer diameter of the spiral protrusion on the outer peripheral surface of the round rod containing the web reinforcement ( Diameter or radius).

Based on the above purpose, the present invention provides a special-shaped steel bar as a structural material of the upper and lower chord bars of a steel truss, which is characterized in that it is formed on the circumference of a long steel bar by a hot rolling and calendering technology along the length direction. A special-shaped steel bar with a concave groove, the structure, width and depth of the concave groove are matched with the outer diameter of the web steel bar matched with it and the welding method of assembling the steel truss; Spiral protrusions are arranged on the outer circumferential surface of the round bar of the steel bar at regular intervals in the longitudinal direction, and concave grooves are formed on the surface of the concave groove at regular intervals in the longitudinal direction; A rounded chamfer with a height between the two edges of the groove width direction recessed on the circumference of the round bar and the outer peripheral surface of the reinforced round bar, and the opposite side of the round bar along the length direction Two rib arches.

In another embodiment, concave grooves may be formed on the outer peripheral surface of the round bar of the special-shaped steel bar at regular intervals in the length direction.

In another embodiment, spiral grooves may be formed on the surface of the grooves recessed on the circumference of the round bar of the special-shaped reinforcing steel bar at regular intervals in the length direction.

In another embodiment, continuous or plural discontinuous at least one protruding strip may be formed along the length direction at the bottom of the groove recessed on the circumference of the round bar of the special-shaped steel bar. The direction of extension is parallel to the length of the bar or inclined at an angle.

For the above purpose, the present invention further provides a special-shaped steel bar as a structural material of the upper and lower chord bars of the steel truss, which is characterized in that it is formed by a hot rolling and calendering technology along the circumference of a long round steel bar. Special-shaped steel bars with a concave groove at regular intervals on the straight line of the direction; the longitudinal length of the concave grooves is greater than the maximum longitudinal length of the overlap of the bending area of the reinforcing bar of the web with which it is matched; The structure, width, and depth of the recessed groove are matched with the outer diameter of the reinforcing bar truss and the welding method of assembling the reinforcing bar truss; There is a helical protrusion at a certain distance; the profiled steel bar has a convex-shaped arc chamfer between the edge of the groove recessed on the circumference of the round bar and the outer surface of the round bar, and the round bar There are two rib arches located on opposite sides along the length direction on the circumference.

In another embodiment, the cross-sectional area of the cross-section of the deformed steel bar at any position along the length direction may be substantially unchanged.

In another embodiment, spiral protrusions may be formed on the surface of the groove recessed on the circumference of the round bar of the special-shaped reinforcing steel bar at regular intervals in the length direction.

In another embodiment, continuous or plural discontinuous at least one protruding sheet strip may be formed along the length direction of the groove bottom recessed on the circumference of the round bar of the special-shaped steel bar. The direction of extension is parallel to the length of the bar or inclined at an angle.

In another embodiment, concave grooves may be formed on the outer peripheral surface of the round bar of the special-shaped steel bar at regular intervals in the longitudinal direction.

In another embodiment, a plurality of recessed grooves arranged in a line may be formed on the circumference of the round bar of the deformed steel bar at a position 180 degrees apart from the plurality of recessed grooves arranged in a line. The concave grooves have the same structure; the plurality of concave grooves on the opposite sides of the round bar on the round bar (that is, two sides separated by 180 degrees) are each concave grooves along the length direction. The location is staggered.

The present invention also provides a reinforced truss, comprising: a web reinforcement and a lower chord reinforcement and an upper chord reinforcement fixedly connected to the web reinforcement; the lower chord reinforcement and the upper chord reinforcement are characterized in that: The special-shaped steel bars of the structures of the foregoing embodiments are used as a structural material; the web bar steel bars are continuously formed into a wave shape by a round bar of steel bars, and the outer ends (wave peaks) of the bending areas on the two sides in the longitudinal direction are roughly The upper sides are on two parallel lines that are parallel to each other. The manufacturing method is characterized in that the bending areas on the longitudinal sides of the wavy web reinforcement are placed into the recesses of the lower chord reinforcement and the upper chord reinforcement. Within the trench or groove, and reinforced by a welding method to form a reinforced truss.

The present invention also provides a floor slab hanging formwork method system unit (Note: hereinafter referred to as a system unit), which includes: a plurality of horizontally fixed steel bars, a plurality of tied iron wires, a bottom formwork and a vertical formwork disposed above the bottom formwork. A plurality of groups of longitudinally parallel reinforced trusses are arranged. The reinforced trusses are selectively reinforced trusses composed of the special-shaped reinforcing bars of the foregoing various embodiments. Each of the plurality of sets of reinforced trusses and the bottom formwork are provided with a plurality of Spaced spacers arranged alternately along the longitudinal direction, and a set of longitudinally parallel longitudinally arranged reinforcing members is arranged below the bottom formwork at the position corresponding to each group of reinforcing steel trusses; the assembly method is characterized in that: The longitudinal length of the system unit is respectively provided with a binding iron wire and a fixed connection between the upper part of the chord steel bar on each reinforcing steel truss and the lower part of the corresponding strip-shaped reinforcing member at regular intervals, and then in the system Horizontally fixed steel bars are inserted horizontally under the upper chord bars at the two ends of the unit in the longitudinal direction and at the middle position, and these are welded or bound. The chords with such reinforcement steel is fixedly connected to a fixed level, which are assembled to form the floor plate mold lifting system unit construction method.

1a‧‧‧ The special-shaped steel bar of the second embodiment

1b‧‧‧ Special-shaped steel bar of the first embodiment

2a‧‧‧ The special-shaped steel bar of the fourth embodiment

2b‧‧‧ The special-shaped steel bar of the third embodiment

3a‧‧‧The special-shaped steel bar of the sixth embodiment

3b‧‧‧Fifth embodiment of special-shaped steel bars

4a‧‧‧ Eighth embodiment of special-shaped steel bars

4b ‧‧‧ Special-shaped steel bar of the seventh embodiment

5a‧‧‧ Tenth embodiment of special-shaped steel bars

5b‧ Shaped steel bar of the ninth embodiment

6‧‧‧ Web bar

11a‧‧‧Recessed groove (Note: Arc shape)

11b‧‧‧Recessed groove (Note: arc shape)

12a‧‧‧Recessed groove (Note: U shape)

12b‧‧‧Recessed groove (Note: U shape)

13‧‧‧ recessed groove or groove bottom

14‧‧‧ horizontal diameter plane

15‧‧‧Component holding frame

15b‧‧‧Workbench

16, 17‧‧‧ one-way linear slide (Note: left and right)

18‧‧‧ Intermediate clamping and fixing table

19‧‧‧ Welded reinforcement mesh

20‧‧‧ the largest periphery of the steel bar

21‧‧‧ Outer peripheral surface of steel rod

22‧‧‧ recessed groove or groove surface

23‧‧‧The edge of a recessed groove or groove

28‧‧‧ raised strip

30‧‧‧ round rod circumference

31, 32‧‧‧Bend area (Note: left vertical, right vertical)

33, 34‧‧‧lap (Note: vertical left, vertical right)

35, 36‧‧‧ Outer endpoint (Note: vertical left, vertical right)

37, 38‧‧‧Straight (Note: vertical left, vertical right)

40‧‧‧ Ordinary special-shaped steel bar

41‧‧‧ Spiral knob

42‧‧‧ rib arch

43‧‧‧Recessed texture

45‧‧‧ Horizontal fixed steel bar

48‧‧‧welding points

50‧‧‧ Reinforced Round Rod

60‧‧‧ Reinforced Truss

61‧‧‧ Upper bar rebar

62‧‧‧ Lower bar rebar

70, 71‧‧‧side steel mold (Note: right, left)

72, 73‧‧‧side steel molds (Note: right and left)

74‧‧‧ trapezoidal template

75, 76, 77, 78‧‧‧ plates

79‧‧‧Tiles

80‧‧‧Wall panel semi-finished product

81‧‧‧ spacer

82‧‧‧ bottom template

83‧‧‧ long reinforcement

84‧‧‧ Tie iron wire

90‧‧‧ rib

93‧‧‧ abdominal

94‧‧‧ Lower chord

95‧‧‧ Winding rod

96‧‧‧Support vertical steel bar

97‧‧‧ horizontal reinforcement

R‧‧‧ arc radius

d1‧‧‧ depth

r2‧‧‧Circular chamfer

h1‧‧‧ height

w‧‧‧Width (Note: U-shaped recessed groove or groove)

L1‧‧‧Maximum longitudinal length (Note: the overlap of the web bending area of the reinforcing bar)

L2‧‧‧Longitudinal length (Note: recessed groove)

FIG. 1A is a plan sectional view in the direction of 1A-1A of FIG. 6A, which shows the shape and structure of a radial section of a special-shaped steel bar according to the second embodiment of the present invention; FIG. 1B is a plan sectional view in the direction of 1B-1B of FIG. The shape and structure of the radial section of the shaped bar in the first embodiment of the invention; FIG. 2A is a plan sectional view showing the shape and structure of the radial section of the shaped bar in the fourth embodiment of the invention; and FIG. 2B is a view showing the third embodiment of the invention Plane cross-sectional view of the radial section shape and structure of a special-shaped steel bar; FIG. 3A is a plan cross-sectional view showing the shape and structure of a radial section of a special-shaped steel bar according to a sixth embodiment of the present invention; FIG. Plane cross-sectional view of the shape and structure of the radial section of the steel bar; FIG. 4A is a plan cross-sectional view showing the shape and structure of the radial section of the eighth embodiment of the present invention; FIG. 4B shows the diameter of the special-shaped bar of the seventh embodiment of the present invention 5A is a plan cross-sectional view showing the shape and structure of a radial section of a special-shaped steel bar according to a tenth embodiment of the present invention; and FIG. 5B is a ninth embodiment showing the present invention. Plane cross-sectional view of the radial section shape and structure of the special-shaped steel bar; FIG. 6A is a schematic plan view showing an embodiment in which multiple concave grooves are formed on the straight line along the length direction on the circumference of the round bar of the special-shaped steel bar; FIG. 6B is FIG. 7A and FIG. 7B are respectively schematic diagrams showing different forms of web member steel bars constituting the steel truss of the present invention; FIG. 8 shows a plan view and a front view of a combination of two special-shaped steel bars and a web bar in an embodiment of the present invention; FIG. 9 shows a plan view of a combination of two special-shaped bars and a web bar in another embodiment of the present invention; And front view schematic diagrams; FIG. 10A shows a plan view and a front view of the present invention combining a web bar reinforcement bar with two shaped bars with concave grooves to form a reinforced truss according to the present invention; FIG. 10B shows a web bar reinforcement bar combination according to the present invention Top and front schematic diagrams of two reinforced trusses formed by two special-shaped steel bars in the trench; Figures 11A to 11D show the use of the steel truss manufacturing method of the present invention The process schematic diagram of the embodiment of the hollow reinforced concrete wall panel; FIG. 12 is a schematic diagram showing an embodiment of a reinforced structure for forming a floor panel hanging formwork system unit using the reinforced truss of the present invention; FIG. 13A shows the reinforced truss of the present invention. Front view and side view schematic diagram of the rod reinforcement connected to the concave groove or groove of the special-shaped steel bar; Figure 13B shows the schematic view of the front and side views of the conventional steel truss to connect the web bar and special-shaped steel bar to overlap the structure; Figure 13C shows The conventional steel truss is a front view and a side view of the structure of the web bar and the special-shaped steel bar on the surface. Figure 14 shows the schematic side view of the conventional triangular-shaped steel truss structure. Figure 15 shows the three-dimensional schematic view of the conventional ordinary shaped steel structure. ;

Today, in order to help your examiners understand the technical means, creative features, and effects achieved by the industry in accordance with the present invention, I would like to express and explain them in detail with examples and schematic diagrams. The main purpose of the drawings is to illustrate and subsidize the description, not the actual proportions, the number and configuration of the reinforcing bars after the actual implementation of the present invention, which will be described here first.

For ease of understanding, the same-type elements in the description of the following embodiments are described with the same symbols.

Please refer to FIG. 6B and FIG. 6A, which are schematic diagrams of an embodiment of a special-shaped steel bar of the present invention. Among them, as shown in FIG. 6B, a hot-rolled calendering technique is used to form a groove (11b, 12b) with a suitable width and depth recessed on the circumference (30) of the long-shaped steel bar (50) along the length direction. An embodiment of a special-shaped steel bar; In addition, as shown in FIG. 6A, a long-rolled steel bar (50) formed on the circumference (30) of the round bar (50) along the lengthwise line is formed at a certain interval by a hot rolling and calendering technique. Another embodiment of the special-shaped steel bars with recessed grooves (11a, 12a) of length, width, and depth; the above-mentioned "a proper width and depth" is the outer diameter of the reinforcing bar and the truss assembly welding The construction method is matched; the special-shaped steel bar has spiral protrusions (41) or concave bars on the outer circumferential surface (21) of the round bar and the surface of the concave groove or groove along the longitudinal direction at certain intervals. Lines, in addition, grooves or grooves recessed on the circumference of the round bar, and a rounded chamfer (r2) with a height between the edges of both sides in the groove width direction and the outer peripheral surface (21) of the round bar of the steel bar, and On its round rod circumference (30), there are two rib arches (42) located on opposite sides along the length direction.

1A to FIG. 5B are plan cross-sectional views showing embodiments of different shaped steel bars with different radial cross-sectional shapes and structures formed based on the structure of the shaped steel bars of FIG. 6A or FIG. 6B. among them:

"Special-shaped steel bar of the first embodiment"

Referring to FIG. 1B, it is a schematic diagram of a special-shaped reinforcing bar (1b) according to a first embodiment of the present invention. As shown in the figure, with the hot rolling and calendering technology, a special-shaped steel bar with a concave groove along the length direction is formed on the circumference (30) of a long steel bar round rod (50), and the concave groove (11b) The cross-sectional shape of) is arc-shaped. Refer to the symbol in FIG. 1B for a description of the circle of the arc-shaped concave groove (11b) on the circumference (30) of the round bar (30) of the deformed steel bar (1b) of the first embodiment. The arc radius (R) is equal to or slightly larger than the radius of the web reinforcing bar with which it is matched, and the recessed depth (d1) is equal to or smaller than the radius of the web reinforcing bar with which it is matched; and on the outer peripheral surface (21) of its round rod There are spiral knuckles (41) or recessed lines at regular intervals in the length direction, and the arcuate concave groove surface (22) has recesses at regular intervals in the length direction. Lines (43); in addition, a circular arc with a height between the edges (23) on both sides of the groove width direction of the arc-shaped recess on the circumference of the round bar and the outer peripheral surface (21) of the round bar An angle (r2); and two rib arches (42) on opposite sides of the round rod circumference (30) along the length direction.

"Special-shaped steel bar of the second embodiment"

Referring to FIG. 1A, it is a schematic diagram of a special-shaped reinforcing bar (1a) according to a second embodiment of the present invention. As shown in the figure, the hot-rolled calendering technology is used to form a special-shaped steel bar with concave grooves at regular intervals on a straight line along the length direction on the circumference (30) of a long round bar (50); The cross-sectional shape of the concave grooves (11a) is arc-shaped; referring to the description of the symbols in FIG. 1A, the arc-shaped concave grooves on the circumference of the round bar of the deformed steel bar (1a) of the second embodiment are described. The arc radius (R) of the groove (11a) is equal to or slightly larger than the radius of the web reinforcing bar with which it is matched, and the recessed depth (d1) is equal to or smaller than the radius of the web reinforcing bar with which it is matched; On the outer peripheral surface (21), there are spiral knuckles (41) or recessed lines at certain intervals in the length direction; in addition, the edges (23) of the grooves arc-shaped recessed on the circumference of the round rod and A rounded chamfer (r2) with a protrusion and a height between the outer circumferential surface (21) of the reinforced round bar; and two rib arches (42) on the round bar circumference (30) along the length direction on opposite sides 10A, the shaped bar (1a) of the second embodiment is used as the structure of the upper and lower chord bars (61), (62) of the steel truss (60) on the circumference of its round bar The longitudinal length (L2) of a recessed groove (11a) is larger than the maximum longitudinal length (L1) of the overlap (33, 34) of the bending area of the reinforcing bar of the web bar with which it is matched; (1a) The cross-sectional area of a cross section at any position along the length direction is substantially constant.

"Special-shaped steel bar of the third embodiment"

The deformed steel bar (2b) of the third embodiment shown in FIG. 2B is a change based on the deformed steel bar of the first embodiment shown in FIG. 1B. Therefore, the deformed steel bar shown in FIG. 2B has an approximate shape. The structure of the special-shaped steel bar shown in FIG. 1B; however, FIG. 2B further has arc-shaped concave grooves (11b) on the surface (22) of the round rod circumference (30) at regular intervals in the longitudinal direction. Spiral knob (41).

"Special-shaped steel bar of the fourth embodiment"

The deformed steel bar (2a) of the fourth embodiment shown in FIG. 2A is a modification based on the deformed steel bar of the second embodiment shown in FIG. 1A. Therefore, the deformed steel bar shown in FIG. 2A has an approximate shape. The structure of the special-shaped steel bar shown in FIG. 1A; however, FIG. 2A further has arc-shaped recessed grooves (11a) on the surface (22) of the round rod circumference (30) at regular intervals in the longitudinal direction. Spiral knob (41).

"Fifth Embodiment of Rebars"

The deformed steel bar (3b) of the fifth embodiment shown in FIG. 3B is a change based on the deformed steel bar of the third embodiment shown in FIG. 2B. Therefore, the deformed steel bar shown in FIG. 3B has an approximate shape. The structure of the special-shaped steel bar shown in FIG. 2B; however, FIG. 3B further has at least one convexity of continuous or plural discontinuities along the length direction of the bottom (13) of the groove recessed in an arc shape on the circumference (30) of the round rod. The raised strip (28), the extending direction of the raised strip (28) is parallel to the length of the reinforcing bar or inclined at an angle; the raised height (h1) of the raised strip (28) is equal to or lower than The maximum outer circumference (20) of the steel bar has a maximum thickness of less than 5 mm.

"Special-shaped steel bar of the sixth embodiment"

The deformed steel bar (3a) of the sixth embodiment shown in FIG. 3A is a change based on the deformed steel bar of the fourth embodiment shown in FIG. 2A. Therefore, the deformed steel bar shown in FIG. 3A has an approximate shape. The structure of the special-shaped steel bar shown in FIG. 2A; however, FIG. 3A further has an arc-shaped concave groove bottom (13) on the round bar circumference (30) having at least one convexity that is continuous or plural discontinuous along the length direction. The raised strip (28), the extending direction of the raised strip (28) is parallel to the length of the reinforcing bar or inclined at an angle; the raised height (h1) of the raised strip (28) is equal to or lower than The maximum outer circumference (20) of the steel bar has a maximum thickness of less than 5 mm.

"Special-shaped steel bar of the seventh embodiment"

Referring to FIG. 4B, it is a schematic diagram of a special-shaped reinforcing bar (4b) according to a seventh embodiment of the present invention. As shown in the figure, the hot-rolled rolling technology is used to form a special-shaped steel bar with a concave groove along the length direction on the circumference (30) of a long-shaped steel bar (50), and the concave groove (12b) ) Is U-shaped in cross section; the width (w) of the U-shaped recessed groove (12b) on the circumference of the round bar of the special-shaped steel bar (4b) of the seventh embodiment is between the web steel bars that match it Between the diameter and the radius, and the recessed depth (d1) is equal to or smaller than the radius of the web reinforcement that is matched with it; and on the outer peripheral surface (21) of its round rod and the U-shaped recessed groove surface (22) Spiral bulges (41) or recessed lines are provided at certain intervals along the longitudinal direction; in addition, U-shaped recessed grooves (12b) on both sides in the width direction of the round rod circumference (23) a convex arc chamfer (r2) with a height between the outer peripheral surface (21) of the reinforced round rod; and two ribs on opposite sides of the round rod circumference (30) along the length direction Arch (42); the shaped steel bar (4b) of the seventh embodiment may have continuous or plural discontinuities along the length direction at the bottom of the groove that is U-shaped recessed on the circumference of the round bar At least one raised strip whose extending direction is parallel or inclined at an angle to the length of the reinforcing bar, the protruding height of the protruding strip is equal to or lower than the maximum outer circumference of the reinforcing bar, and its maximum thickness is less than 5mm.

"Special-shaped steel bar of the eighth embodiment"

Refer to FIG. 4A, which is a schematic diagram of a special-shaped reinforcing bar (4a) according to an eighth embodiment of the present invention. As shown in the figure, the hot-rolled calendering technology is used to form a special-shaped steel bar with concave grooves at regular intervals on a straight line along the longitudinal direction on the circumference (30) of a long round bar (50); The cross-sectional shape of the recessed groove (12a) is U-shaped. The width (w) of the U-shaped recessed groove (12a) on the circumference of the round bar of the deformed steel bar (4a) of the eighth embodiment. Between the diameter and the radius of the web rod reinforcing bar with which it is matched, and the recessed depth (d1) is equal to or smaller than the radius of the web rod reinforcing bar with which it is matched; and on the outer peripheral surface (21) of its reinforcing bar and U The surface of the concave groove (22) has helical protrusions (41) or concave grooves at regular intervals in the longitudinal direction; in addition, the edges of the U-shaped concave groove on the circumference of the round rod (23) a convex arc chamfer (r2) with a height between the outer peripheral surface (21) of the reinforced round rod; and two ribs on opposite sides of the round rod circumference (30) along the length direction The arch (42); the shaped steel bar (4a) of the eighth embodiment may have a continuous or complex bottom along the length of the U-shaped recessed groove bottom on the circumference of the round bar Discontinuous at least one raised strip whose extending direction is parallel or inclined at an angle to the length of the reinforcing bar. The raised height of the protruding strip is equal to or lower than the maximum outer circumference of the reinforcing bar. The maximum thickness is less than 5mm.

"The Special-shaped Bar of the Ninth Embodiment"

The shaped steel bar (5b) of the ninth embodiment shown in FIG. 5B is a modification of the sixth embodiment shown in FIG. 3A; more specifically, the shaped steel bar (5b) shown in FIG. 5B is attached to a round bar of steel Grooves (11a) and other structures shown in FIG. 3A are formed on opposite sides of the circumference (that is, two sides separated by 180 degrees); referring to FIG. 6C, the round bar circumference of the shaped steel bar (5b) shown in the figure The positions of the plurality of recessed grooves (11a) on opposite sides of (30) in the longitudinal direction are staggered.

"Tenth embodiment of special-shaped steel bars"

The deformed steel bar (5a) of the tenth embodiment shown in FIG. 5A is a modification of the eighth embodiment shown in FIG. 4A; more specifically, the deformed steel bar (5a) shown in FIG. 5A is attached to a round bar of steel The grooves (12a) and other structures shown in FIG. 4A are formed on opposite sides of the circumference (that is, two sides separated by 180 degrees); refer to FIG. 6C, and the round bar circumference of the shaped steel bar (5a) shown in the figure (30) The positions of the plurality of recessed grooves (12a) on opposite sides of the upper side are staggered.

"Examples of steel trusses"

The steel truss of the present invention is formed by using one of the special-shaped steel bars in the embodiment of FIG. 1A to FIG. 5B with a web bar steel bar. See FIGS. 10A (60) and 10B (60). Among them, the web bar reinforced part uses ordinary special-shaped steel bar (40). According to the structural design and construction drawings, the steel bar is pre-formed by a professional automated steel bar bending machine to form a wave-shaped web bar rebar, as shown in Figure 7 (6). It is characterized in that the ends (35, 36) outside the overlap (33, 34) of the bending areas (31, 32) on the left and right sides in the longitudinal direction are roughly two straight lines (parallel with each other on the left and right sides in the longitudinal direction) 37, 38), and the two straight lines (37, 38) parallel to the left and right are on the same plane.

The web beams are wave-shaped, and the distance (wavelength) between each wave is substantially equal.

The special-shaped steel bars of the first or second embodiment of the present invention are used as the structural members of the upper and lower chord bars (61), (62) of the steel truss (60). The program is used to assemble, and a special-shaped steel bar (1b) of the first embodiment is placed on the clamping and fixing frame (15) of the special component for reinforcing steel truss assembly as the upper chord bar (61) (Note: only the special shape of the first embodiment is used) Rebar (1b) is a representative statement), then place another web bar (6) and place all the bending areas (31) on the left side in the longitudinal direction (31) the overlap (33) into the concave bar (1b) of the first embodiment. Into the groove (11b), one additional shaped steel bar (1b) of the first embodiment is placed as the lower chord bar (62), and all the bending areas (32) on the right side of the web bar (6) are overlapped. The joint (34) is inserted into the recessed groove (11b) of the special-shaped reinforcing bar (1b) of the first embodiment. After the components of the reinforced truss are configured, each component is clamped and fixed, and then sequentially placed on the two sides of the reinforced truss. The end position and the middle position, and other appropriate positions are selectively bent by the welding method at the bottom of the groove (13) and the reinforcing bar of the concave bar (1b) of the first embodiment. Areas (31, 32) are overlapped by welding (33, 34). As shown in FIG. 13A, the special-shaped steel bar (1b) and the web steel bar (6) of the first embodiment are fixedly connected, and the steel truss is finally completed. (60) Assembly work: According to the above procedures, according to the structural design and construction drawings, it is possible to produce reinforced trusses that form reinforced concrete structures such as hollow concrete wall panels, floor slabs and beams.

The deformed steel bars (1a or 1b) of the first or second embodiment of the present invention are used to form a reinforced truss, and the design feature is that the bending area of the reinforcing bar of the web member is overlapped and disposed into the deformed steel bars (1a of the first or second embodiment). Or 1b) The groove or groove (11a or 11b) that is concave in an arc shape has the following advantages:

1. The welding process becomes simpler and easier.

2. It is only necessary to selectively overlap the reinforcing bar (1a or 1b) recessed groove or groove (11b or 11a) at the bottom (13) with the web bar bending area. Welding in-place, reducing construction costs and time.

3. Desoldering is unlikely to occur during the construction of the poured concrete, so that the bearing strength of the reinforced concrete members is guaranteed.

4. In short, the special-shaped steel bars (1a or 1b) of the first or second embodiment of the present invention can be mass-produced as the structural members of the upper and lower chord steel bars (61) and (62) of the steel truss (60). High-strength and consistent quality reinforced trusses are economical and can be used by the construction industry.

The special-shaped steel bars of the third to tenth embodiments of the present invention (Note: In the description of the following description, only the special-shaped steel bar (4a) of the eighth embodiment and the width (w) of the U-shaped recessed groove (12a) are used) (The diameter smaller than the diameter of the web reinforcement that is matched with it is a representative statement) As the structural member of the upper and lower chord reinforcement (61) and (62) of the reinforced truss (60), the assembly method and steps of the reinforced truss are shown in Figure 9 To assemble the special resistance welding machine workbench (15b) on the steel truss (Note: This workbench includes left and right one-way linear slide tables (16, 17) and intermediate clamping and fixing tables (18). Its design features It is to make the horizontal diameters of the upper and lower chord bars and web bars are on the same plane (14). One web bar (6) is placed on the middle clamping and fixing table (18), and then left and right. On the linear sliding table (16, 17), each one of the special-shaped steel bars (4a) of the eighth embodiment is placed on the web bar (6) longitudinally left and right, and the angle and orientation of the special-shaped steel bars (4a) of the eighth embodiment are adjusted. So that the orientation of the recessed groove (12a) is facing the web reinforcement (6), and the power switch is activated after being clamped and fixed, so that the left and right sides of the longitudinal direction The deformed steel bar (4a) of the eighth embodiment is sequentially moved to the web steel bar (6), and the processes of contacting, high temperature melting at the contact part, and pressure welding are performed to bend the web steel bar (6). The overlap (33, 34) of the area (31, 32) is placed in the recessed groove (12a) of the shaped bar (4a) of the eighth embodiment, and is fixedly connected to the two shaped bars (4a) of the eighth embodiment. ), Turn off the power switch and take out the reinforced truss (60) after completing all the processes.

The assembly work of the above-mentioned steel truss (60) is because the contact area between the special-shaped steel bar (4a) of the eighth embodiment and the web bar steel (6) is small, and the current and heat conduction of the special-shaped steel bar (4a) of the eighth embodiment are interrupted. The area becomes smaller, the melting and welding parts are strip-like, and the volume is reduced, which makes it possible to easily complete high-quality resistance welding assembly work with less current power, saving energy; and the web reinforcement (6 ) The bending areas (31), (32), laps (33), (34) are inserted into the recessed grooves (12a) of the special-shaped steel bars (4a) of the eighth embodiment, and are fixedly connected to form stable steel bars. Truss; the above-mentioned characteristics make the reinforced truss (60) formed by the special-shaped steel bar of the present invention have better quality and efficacy, which can give full play to the buckling strength and bearing capacity of the reinforced truss mechanics, and save materials; Limited by the quality of each welding point, it is very helpful for the improvement of mass production efficiency and yield.

As described above, the special-shaped steel bar (4a) of the eighth embodiment is used as the structural member of the upper and lower chord steel bars (61) and (62) of the steel truss (60). When the diameter of the lower chord bar and the web bar is different due to the design requirements, they can also be easily assembled to form a reinforced truss by the resistance welding method. This feature makes the reinforced truss formed by assembling the special-shaped steel bars of the present invention in its application range. There are few restrictions; the above-mentioned resistance welding method is used to form a reinforced truss. The upper and lower chord steel bars are melted and welded at a high temperature. The high temperature is limited to the strip-shaped part, and the temperature of most other parts of the upper and lower chord steel bars (50). The critical temperature of metallographic change has not been reached, so the variation of its metal structure and mechanical strength is small.

The reinforced trusses (60) formed by the special-shaped steel bars of the first to tenth embodiments of the present invention as the structural members of the upper and lower chord steel bars (61), (62) have a simple structure, and have better yield strength and Bearing capacity, and simple process, easy to make. As the basic unit of the reinforced concrete structure of the building construction, it is set in the reinforcement ribs (90) of the hollow concrete reinforced concrete wall panel (Figure 11D) and the floor panel hanging formwork. The reinforced structure of the construction method system unit (Figure 12) has the following benefits:

1. The reinforced structure of various reinforced concrete members has a simple structure and easy assembly work.

2. The concave shaped grooves or grooved surfaces (22) of the special-shaped steel bars of the third to tenth embodiments of the present invention have spiral protrusions (41) at regular intervals to enhance the grip between the steel bars and the concrete Force, which helps to support the load and increase the seismic strength.

3. The labor force and construction period of construction workers have been greatly reduced.

4. It can greatly reduce wage costs such as rebar work, formwork work, external wall tile work, wall and floor slab plastering and leveling work, etc., which is in line with economic benefits.

5. Small workload on site, reducing on-site construction troubles.

6. It has good falling strength and is suitable for the construction of large-span buildings.

7. The consistency of the construction quality of the reinforced structure is guaranteed.

8. Production of hollow concrete wall panels, floor panels, etc., which have both good strength and weight reduction characteristics, and improve the seismic strength of the house.

9. The floor slab has good crack resistance, which is basically equivalent to the traditional cast-in-situ floor slab.

10. Provide a method for industrialization and automation of construction industry.

"Exemplary Embodiment of Manufacturing Reinforced Truss of the Present Invention to Form Hollow Concrete Reinforced Concrete Wall Panels"

As shown in FIG. 11A, it is a schematic diagram of a reinforced structure of an embodiment of a hollow concrete reinforced concrete wall panel manufactured by the steel truss of the present invention. The figure includes a composite wall panel steel truss (60) and two welded steel meshes. (19) Two types of components are arranged according to the design and construction drawings of the hollow concrete wall panel reinforced structure; referring to FIG. 11B, the reinforced truss (60) is first set in the overlap seam on the inner edges of the upper and lower steel molds, and then A trapezoidal formwork (74) and plates (75), (76) are arranged below the adjacent steel trusses, and a welded steel mesh (19) is laid above and selectively focused and fixed. The left and right steel molds (71) are set on the periphery. (70), refill the concrete, and then perform a leveling process on the upper surface. After solidifying and forming, remove the upper and lower steel molds, left and right steel molds (71), (70), and remove the plate Pieces (75), (76) and trapezoidal formwork (74) to obtain a wall panel semi-finished product (80); referring to FIG. 11C, the wall panel semi-finished product (80) is placed upside down and inverted, and a plate is arranged in the groove Pieces (77), (78), and a welded steel mesh (19) is laid on top of it and selectively focused and fixed, and the periphery is set on The lower steel mold and the left and right steel molds (73) and (72) are refilled with concrete and leveled. After the concrete is solidified and formed, the upper and lower steel molds are removed, and the left and right steel molds (73), (72), take out the plates (77), (78), apply tile (79) sticking work on top of them, hollowly dispose of sound insulation, heat insulation and flame retardant materials to form a double-sided thin plate and a plurality of longitudinal reinforcements Rib (90), in which a reinforced truss (60) is provided, a hollow lightweight concrete reinforced concrete wall panel with sound insulation, heat insulation and environmental protection functions, see FIG. 11D.

"Examples of System Units for Floor Slab Hanging Method"

Referring to FIG. 12, it is a schematic diagram of a reinforcing steel structure of an embodiment of a floor panel hanging formwork method system unit (note: hereinafter referred to as: system unit) according to the present invention. In the figure, it includes: a plurality of arrays of floor slab reinforced trusses (60) arranged vertically and parallel in parallel (note: the reinforced trusses described in the above-mentioned "Examples of reinforced trusses" of the present invention), a plurality of rows of spacers (81 ) (Note: It can be cement spacers, each row of spacers contains several spacers arranged in the longitudinal direction), a bottom template (82) (Note: this bottom template can be three 15 ± 5mm thick) The plywood is pre-drilled with two rows of holes with a diameter slightly larger than the diameter of the fixed iron wire described below at a certain distance in the longitudinal direction at a position corresponding to the reinforced truss (60). Long strip reinforcement (83) (Note: This long strip reinforcement can be thick-wall reinforced steel pipe or T-shaped steel reinforcement rod, etc., which is located at the corresponding position of each reinforced truss (60) below the bottom formwork); There are three horizontally fixed steel bars (45) and other components, which are configured according to the design and construction drawings of the reinforced structure of the system unit of the floor slab formwork method, and are arranged at certain intervals along the longitudinal direction of the system unit (that is, the holes of the aforementioned bottom formwork). Chord steel on each reinforced truss (60) A fixed iron wire (84) of an appropriate diameter is passed between the upper part of the (61) and the lower part of the corresponding strip-shaped reinforcing member (83) and tied and fixed, and then in the longitudinal direction of the unit group Horizontal fixed steel bars (45) are horizontally penetrated under the upper chord steel bars (61) at both ends and middle positions, and the upper chord steel bars (61) and the horizontal fixed steel bars (45) are welded or tied together. It is fixedly connected, and assembled to form a floor panel hanging mold system unit as shown in FIG. 12; the system unit can be assembled at the building site with a special clamp as a supplementary device, saving transportation costs.

The above system unit is hoisted to the construction site. The steel bars protruding from the bottom formwork at both ends in the longitudinal direction are set on the beam structure of the beam. After the required system units are set up according to the floor slab construction design diagram, the lower chord bars are reinforced (62) A transversely-stressed steel bar (40) is penetrated at a certain interval above to connect multiple pieces of system units, and then various line pipes are installed, and a low-density sound insulation and heat resistance of appropriate thickness is placed between two adjacent steel trusses ( For top floor slabs), fire-resistant materials, then a welded steel mesh is laid over the upper chord steel bar (61) and selectively focused and fixed, and then filled with concrete to form a whole, sound insulation and heat insulation (top floor) ) Floor board with water-proof function.

Due to the specific structure of the composite steel reinforced truss (60), the above-mentioned lifting formwork system has a high drop strength and a good bearing capacity, which is sufficient to bear the load of concrete added during the construction of the poured concrete.

The above-mentioned lifting mold construction system does not require on-site nailing of formwork and erection support systems, and the on-site workload of laying and binding steel bars on site is reduced by more than 70%. The floor slab roof is leveled without the need for plastering and leveling procedures. The amount of work on site is small and construction Easy and short cycle with less trouble; the bottom template (82) can be recycled and reused after being removed, saving average cost.

The special-shaped steel bars of the first to tenth embodiments of the present invention are used as the structural members of the upper and lower chord steel bars to assemble the reinforced truss. The hollow siding wall boards, floor boards, etc. are formed by referring to the procedures described in the above embodiments, and have both Good strength and weight reduction characteristics, can reduce the degree of shaking and the generation of shear forces during earthquakes, and ensure the safety of buildings has significant benefits, is in line with economic interests, and can be used by the construction industry.

The above-mentioned lifting formwork unit group technology can also be applied to the construction of a building beam body, and its process method is similar to the above-mentioned floor slab hanging formwork system unit.

In summary, the above embodiments are only the preferred embodiments of the present invention to illustrate the benefits that the technical content of this creation can be achieved and the industrial utilization, and the scope of implementation of the present invention should not be defined in this way; Any implementation of simple equivalent changes and modifications that do not exceed the broad concept of the invention and the scope of the following patent applications is still within the scope of the invention patent.

Claims (12)

    A special-shaped steel bar is used as the structural material of the upper and lower chord bars of a steel truss. It is characterized in that a hot-rolled calendering technique is used to form a long groove with a concave groove on the circumference of the round bar. Special-shaped steel bars, the structure, width and depth of the recessed groove are matched with the outer diameter of the web steel bars and the welding method of the steel truss assembly; the special-shaped steel bars are arranged along the outer peripheral surface of the round bar. There are helical protrusions at certain intervals in the length direction, and there are concave grooves on the surface of the grooves that are recessed along the length direction; the shaped steel bars are recessed on the circumference of the round bar. A circular arc chamfer having a height between the two sides of the groove in the width direction and the outer peripheral surface of the round steel bar is raised.         The special-shaped steel bar according to item 1 of the scope of the patent application, wherein the round bars on the outer peripheral surface of the steel bar have concave grooves at regular intervals in the longitudinal direction.         The special-shaped reinforcing bar according to item 1 or 2 of the scope of the patent application, wherein the surface of the groove recessed on the circumference of the round rod of the reinforcing bar has spiral protrusions at regular intervals in the longitudinal direction.         The special-shaped steel bar according to item 3 of the scope of the patent application, wherein the bottom of the groove recessed on the circumference of the round bar of the steel bar has at least one convex strip continuous or plural discontinuous along the length direction, etc. The extending direction of the raised strip is parallel to the length of the reinforcing bar or inclined at an angle.         A special-shaped steel bar is used as the structural material of the upper and lower chord bars of a steel truss. It is characterized in that by using hot rolling and calendering technology, it is formed at a certain interval on a straight line along the length direction on the circumference of a long round steel bar. Special-shaped steel bars with a recessed groove. The longitudinal length of the recessed grooves is greater than the maximum longitudinal length of the overlapping area of the bending area of the reinforcing bar with which it is matched. The structure and width of the recessed grooves It is matched with the depth and the outer diameter of the reinforcing bar truss and the welding method of assembling the steel truss; the special-shaped steel bar has spiral protrusions on the outer peripheral surface of the round bar of the steel bar at certain intervals along the length direction, The special-shaped steel bar has a convex-shaped arc chamfer between the edge of the groove recessed on the circumference of the round bar and the outer peripheral surface of the round bar.         The special-shaped reinforcing bar according to item 5 of the scope of the patent application, wherein the cross-sectional area of the cross section of the reinforcing bar at any position along the length direction is substantially constant.         The special-shaped reinforcing bar according to item 5 or 6 of the scope of application for a patent, wherein spiral grooves are provided on the surface of the groove recessed on the circumference of the round bar of the reinforcing bar at certain intervals along the length direction.         The special-shaped steel bar according to item 7 of the scope of the patent application, wherein the bottom of the groove recessed on the circumference of the round bar of the steel bar has at least one convex strip continuous or plural discontinuous along the length direction, etc. The extending direction of the raised strip is parallel to the length of the reinforcing bar or inclined at an angle.         The special-shaped steel bar according to item 8 of the scope of the patent application, wherein the round bars on the outer peripheral surface of the steel bar have recessed lines at regular intervals in the longitudinal direction.         The special-shaped steel bar according to item 8 or 9 of the scope of the patent application, wherein the round bar has a plurality of lines that are arranged in a line at a position 180 degrees apart from a plurality of concave grooves arranged in a line on the circumference of the bar. The recessed grooves have the same structure; the positions of the plurality of recessed grooves on the opposite sides of the round bar of the special-shaped steel bar along the length direction are: Staggered.         A reinforced truss, comprising: a web reinforcement and a lower chord reinforcement and an upper chord reinforcement fixedly connected to the web reinforcement; characterized in that the use of the lower chord reinforcement and the upper chord reinforcement is subject to application The special-shaped steel bar of the structure described in any one of the scope of patents 1 to 10 is used as a structural material; the web bar steel bar is continuously bent into a wavy shape by a steel round rod, and the longitudinal bending areas on both sides thereof The outer ends (wave crests) of the two are substantially on two parallel lines that are parallel to each other; the manufacturing method is characterized in that the bending areas of the wavy web member steel bar on both sides in the longitudinal direction are placed in the lower chord bar steel bar Reinforced trusses are formed in the recessed grooves or grooves of the upper chord bar and fixedly connected by welding.         A floor slab hanging formwork system unit (Note: hereinafter referred to as a system unit), comprising: a plurality of horizontally fixed steel bars, a plurality of bound iron wires, a bottom formwork and a plurality of groups of longitudinal parallelisms vertically arranged above the bottom formwork. Reinforced trusses arranged alternately, the reinforced trusses use the reinforced trusses described in item 11 of the scope of application for patents, and a plurality of spacers arranged along the longitudinal phase are arranged between each set of reinforced trusses and the bottom formwork, Below the bottom formwork, a pair of longitudinally-shaped reinforcing members arranged longitudinally and alternately are arranged at the positions corresponding to each group of reinforcing steel trusses. The assembly method is characterized in that the system is arranged at a certain interval along the longitudinal direction of the system unit. A reinforcing steel truss is respectively provided with a binding iron wire between the upper part of the chord bar reinforcement and the lower part of the corresponding strip-shaped reinforcing member, and is fixedly connected, and then at the longitudinal end positions and the middle position of the system unit Horizontal fixed steel bars are horizontally penetrated under each of the upper chord steel bars, and the upper chord steel bars and the horizontal fixed steel bars are welded or tied together. It is fixedly connected and assembled to form a floor slab formwork system.