Construction method for applying pre-internal force to bolt-sphere net rack rod piece

Abstract

The construction method for applying the pre-internal force to the bolt-sphere net rack rod piece is characterized in that application of pre-tension or pre-pressure of the bolt-sphere net rack rod piece is achieved through a round pipe, a front connecting rod, a rear connecting rod, a pre-pressure reaction frame, a fixing frame, a jack, a steel pipe, a pre-tension reaction frame, a center hole jack, a screw rod and a nut. The front connecting rod is in threaded connection with the bolt ball, and the front connecting rod is not connected with the circular pipe and is suspended in the empty bin; and the rear connecting rod is in threaded connection with the circular tube and the bolt ball. A jack, a reaction frame and other pre-internal force loading devices are installed on the front connecting rod and the rear connecting rod, and pre-pressure or pre-tension force is applied to the bolt-sphere net rack; fixing the front connecting rod and the rear connecting rod, and rotating the round pipe to connect the round pipe and the front connecting rod through threads; and removing the pre-internal force loading device to complete the application of the pre-internal force.

Description

Technical Field

[0001] The invention relates to the technical field of bolt ball grid frames for house steel structures, and in particular to a method for applying pre-internal force to rods of the bolt ball grid frame. Background Art

[0002] Bolt ball grid is widely used in the field of steel structure construction due to its simple structure, convenient installation, no additional node eccentricity and other advantages. During the use of the grid structure, some of the rods need to be replaced due to disease or insufficient bearing capacity. When it is required to apply a set internal force to the replaced bolt ball grid rods, a method of applying a pre-internal force to the replaced bolt ball grid rods is needed. Summary of the invention

[0003] The purpose of the present invention is to design a method for applying pre-internal force to the bolt ball grid rods, so as to apply pre-tension or pre-pressure to the bolt ball grid rods when reinforcing and transforming the bolt ball grid.

[0004] The invention discloses a method for applying pre-internal force to a bolt ball grid rod, characterized in that the pre-tension or pre-pressure is applied when the bolt ball grid rod is installed through a round tube, a front connecting rod, a rear connecting rod, a pre-pressure reaction frame, a fixed frame, a jack, a steel tube, a pre-tension reaction frame, a through jack, a screw and a nut. The round tube and the front connecting rod are connected by threads, and the round tube and the rear connecting rod are connected by threads, and the length of the rod can be adjusted by rotating the front connecting rod and the rear connecting rod.

[0005] The front connecting rod can be connected to the bolt ball by threads first, and the front connecting rod is not connected to the round tube and is suspended in the empty warehouse; the rear connecting rod is connected to the round tube by threads, and the rear connecting rod is connected to the bolt ball by threads. Pre-internal force loading devices such as jacks and reaction frames are installed on the front connecting rod and the rear connecting rod to apply pre-pressure or pre-tension to the bolt ball grid; at this time, the rod can freely expand and contract with the relative deformation of the two ends of the bolt ball. When the pre-internal force loading device is applied in place, fix the front connecting rod and the rear connecting rod, rotate the round tube so that the round tube and the front connecting rod are threadedly connected to become a fixed-length rod; remove the pre-internal force loading device to complete the application of pre-internal force to the replaced rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the bolt ball grid disclosed by the present invention.

[0007] Figure 2 It is a schematic diagram of the bolt ball grid rod disclosed in the present invention.

[0008] Figure 3 The invention discloses a schematic diagram of three components of a bolt ball grid rod, namely a front connecting rod, a rear connecting rod and a round tube.

[0009] Figure 4The invention discloses a front connecting rod and a rear connecting rod with bolts and a hexagonal sleeve.

[0010] Figure 5 The invention discloses a schematic diagram of a pre-stress reaction frame, a fixing frame and a pre-tension reaction frame.

[0011] Figure 6 It is a schematic diagram of step 1 of applying pre-pressure disclosed in the present invention.

[0012] Figure 7 It is a schematic diagram of the second step of applying pre-pressure disclosed in the present invention.

[0013] Figure 8 It is a schematic diagram of step three of applying pre-pressure disclosed in the present invention.

[0014] Fig. 9 It is a schematic diagram of the first step of applying pre-tensioning force disclosed in the present invention.

[0015] Fig.10 It is a schematic diagram of the second step of applying pre-tensioning force disclosed in the present invention.

[0016] Fig.11 It is a schematic diagram of the third step of applying pre-tensioning force disclosed in the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described here are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention will be further described below in conjunction with the accompanying drawings. Figure 2 As shown, the present invention discloses a method for applying pre-internal force to bolt ball grid rods, which is characterized in that the pre-tension or pre-pressure of the bolt ball grid rods is applied through a round tube 2, a front connecting rod 3, a rear connecting rod 4, a pre-pressure reaction frame 5, a fixed frame 6, a jack 7, a steel pipe 8, a pre-tension reaction frame 9, a through-hole jack 10, a screw 11 and a nut 12.

[0019] like Figure 3 As shown, the round tube 2 includes a hollow chamber 23 , a front threaded section 21 and a rear threaded section 22 .

[0020] like Figure 3As shown, the front connecting rod 3 includes a bolt 31, a threaded section 32, a hexagonal sleeve 33, a pin 34 and a hexagonal pipe section 35. The bolt 31 can rotate freely in the hexagonal pipe section 35, the pin 34 passes through the long hole on the hexagonal sleeve 33 and the round hole on the bolt 31, and the hexagonal sleeve 33 can slide along the long hole on the bolt 31. The connecting rod 3 can be rotated by clamping the hexagonal pipe section 35 with a wrench, and the bolt 31 can be rotated by clamping the hexagonal sleeve 33 with a wrench. The bolt 31 and the hexagonal sleeve 33 are as shown in FIG. Figure 4 shown.

[0021] like Figure 3 As shown, the rear connecting rod 4 includes a bolt 41, a threaded section 42, a hexagonal sleeve 43, a pin 44 and a hexagonal pipe section 45. The bolt 41 can rotate freely in the hexagonal pipe section 45, the pin 44 passes through the long hole on the hexagonal sleeve 43 and the round hole on the bolt 41, and the hexagonal sleeve 43 can slide along the long hole on the bolt 41. The connecting rod 3 can be rotated by clamping the hexagonal pipe section 35 with a wrench, and the bolt 31 can be rotated by clamping the hexagonal sleeve 33 with a wrench. The bolt 41 and the hexagonal sleeve 43 are as shown in FIG. Figure 4 shown.

[0022] like Figure 2 As shown, the front threaded section 21 of the round tube 2 and the threaded section 32 of the front connecting rod 3 are connected by threads, and the rear threaded section 22 of the round tube 2 and the threaded section 42 of the rear connecting rod 4 are connected by threads. The length of the rod can be adjusted by rotating the front connecting rod 3 or the rear connecting rod 4.

[0023] like Figure 5 As shown, the pre-stress reaction frame 5 includes a left reaction frame 51, a right reaction frame 52, a screw 53, a circular hole 54, a nut 55 and a circular groove 56. When assembling the pre-stress reaction frame 5, the left reaction frame 51 and the right reaction frame 52 are connected and fixed by the screw 53 and the nut 55. The size of the circular hole 54 is larger than the hexagonal sleeve 33 of the front connecting rod 3 and the hexagonal sleeve 43 of the rear connecting rod 4, and the size and shape of the circular groove 56 are consistent with the bolt ball 1.

[0024] like Figure 5 As shown, the fixing frame 6 includes a left fixing frame 61, a right fixing frame 62, a screw 63, a round tube hole 64, a steel tube hole 65 and a nut 66. When the fixing frame 6 is assembled, the left fixing frame 61 and the right fixing frame 62 are connected and fixed by the screw 63 and the nut 66. The diameter of the round tube hole 64 is larger than that of the round tube 2, and the diameter of the steel tube hole 65 is consistent with that of the steel tube 8. When the pre-pressure is applied, the steel tube hole 65 fits with the steel tube 8, and the fixing frame 6 can prevent the steel tube 8 from being lateral instability when it is compressed.

[0025] like Figure 5As shown, the pretension reaction frame 9 includes a left reaction frame 91, a right reaction frame 92, a screw 93, a round hole 94, a nut 95, a hexagonal slot 96 and a screw hole 97. When the pretension reaction frame 9 is assembled, the left reaction frame 91 and the right reaction frame 92 are connected and fixed by the screw 93 and the nut 95. The size of the round hole 94 is larger than the hexagonal sleeve 33 of the front connecting rod 3 and the hexagonal sleeve 43 of the rear connecting rod 4, the size and shape of the hexagonal slot 96 are consistent with the front connecting rod 3 and the rear connecting rod 4, and the diameter of the screw hole 97 is larger than the screw 11.

[0026] A method for applying a pre-stress to a bolt ball grid rod, when applying the pre-stress, comprises the following steps:

[0027] Step 1: Figure 6 As shown, the bolt 31 of the front connecting rod 3 is connected to the bolt ball 1 by threading, and the threaded section 32 of the front connecting rod 3 is not connected to the round tube 2 but suspended in the empty chamber 23; the threaded section 42 of the rear connecting rod 4 is connected to the rear threaded section 22 of the round tube 2 by threading, and the bolt 41 of the rear connecting rod 4 is connected to the bolt ball 1 by threading. One pre-stress reaction frame 5 is installed on the outside of the hexagonal sleeve 33 on the front connecting rod 3 through the round hole 54, and the other pre-stress reaction frame 5 is installed on the outside of the hexagonal sleeve 43 on the rear connecting rod 4 through the round hole 54, and the circular groove 56 fits the bolt ball 1. A jack 7 and a steel pipe 8 are installed between the two pre-stress reaction frames 5, and a fixing frame 6 is installed on the round tube 2 and the steel pipe 8.

[0028] Step 2: Figure 7 As shown, the jack 7 is used for loading, and the piston rod 71 of the jack 7 is extended to apply pre-pressure to the bolt ball grid, and the pre-pressure is controlled by the hydraulic gauge of the jack 7. The pre-pressure is transmitted through two paths: jack 7-pre-pressure reaction frame 5-circular groove 56-bolt ball 1 and jack 7-steel pipe 8-pre-pressure reaction frame 5-circular groove 56-bolt ball 1.

[0029] Step 3: Figure 8 As shown, fix the front connecting rod 3 and the rear connecting rod 4, rotate the round tube 2 so that the front threaded section 21 of the round tube 2 and the rear threaded section 32 of the front connecting rod 3 are threadedly connected; retract the piston rod 71 of the jack 7, and the pre-pressure transmission path becomes bolt ball 1-front connecting rod 3-round tube 2-rear connecting rod 4-bolt ball 1.

[0030] Step 4: Remove the nut 66 and the screw 63, and remove the fixing frame 6; remove the jack 7 and the steel pipe 8; remove the nut 55 and the screw 53, and remove the pre-pressure reaction frame 5.

[0031] A method for applying a pre-tensioning force to a bolt ball grid rod, comprising the following steps:

[0032] Step 1: Fig. 9As shown, the bolt 31 of the front connecting rod 3 is connected to the bolt ball 1 by threading, and the threaded section 32 of the front connecting rod 3 is not connected to the round tube 2 but suspended in the empty chamber 23; the threaded section 42 of the rear connecting rod 4 is connected to the rear threaded section 22 of the round tube 2 by threading, and the bolt 41 of the rear connecting rod 4 is connected to the bolt ball 1 by threading. One pre-tensioning reaction frame 9 is installed on the inner side of the hexagonal sleeve 33 on the front connecting rod 3 through the round hole 94, and the other pre-tensioning reaction frame 9 is installed on the inner side of the hexagonal sleeve 43 on the rear connecting rod 4 through the round hole 94, and the hexagonal groove 96 is fitted to the front connecting rod 3 and the rear connecting rod 4. The through-hole jack 10, the screw rod 11 and the nut 12 are installed on the two pre-tensioning reaction frames 9.

[0033] Step 2: Fig.10 As shown, a through-hole jack 10 is used for loading, and the piston rod 101 of the through-hole jack 10 is extended to apply pretension to the bolt ball grid, and the pretension is controlled by a hydraulic gauge of the through-hole jack 10. The pretension is transmitted through two paths: through-hole jack 10-pretension reaction frame 9-hexagonal slot 96-front connecting rod 3-bolt ball 1 and through-hole jack 10-nut 12-screw 11-nut 12-pretension reaction frame 9-hexagonal slot 96-rear connecting rod 4-bolt ball 1.

[0034] Step 3: Fig.11 As shown, the front connecting rod 3 and the rear connecting rod 4 are fixed, and the round tube 2 is rotated so that the front threaded section 21 of the round tube 2 and the threaded section 32 of the front connecting rod 3 are threadedly connected; the piston rod 101 of the through-hole jack 10 is retracted, and the pre-tension transmission path becomes bolt ball 1-front connecting rod 3-round tube 2-rear connecting rod 4-bolt ball 1.

[0035] Step 4: Remove the through-hole jack 10, the screw 11 and the nut 12; remove the nut 95 and the screw 93, and remove the pre-tension reaction frame 9.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The present invention discloses a method for applying pre-internal force to bolt ball grid rods, characterized in that: The application of pretension or prepressure to the bolt ball grid rod is achieved through the round tube 2, the front connecting rod 3, the rear connecting rod 4, the prepressure reaction frame 5, the fixing frame 6, the jack 7, the steel pipe 8, the pretension reaction frame 9, the through-hole jack 10, the screw rod 11 and the nut 12.

2. The prestress reaction frame 5 as described in claim 1 comprises a left reaction frame 51, a right reaction frame 52, a screw 53, a circular hole 54, a nut 55 and a circular groove 56; when assembling the prestress reaction frame 5, the left reaction frame 51 and the right reaction frame 52 are connected and fixed by the screw 53 and the nut 55; the size of the circular hole 54 is larger than the hexagonal sleeve 33 of the front connecting rod 3 and the hexagonal sleeve 43 of the rear connecting rod 4, and the size and shape of the circular groove 56 are consistent with the bolt ball 1.

3. The fixing frame 6 as described in claim 1 comprises a left fixing frame 61, a right fixing frame 62, a screw 63, a round tube hole 64, a steel tube hole 65 and a nut 66; when assembling the fixing frame 6, the left fixing frame 61 and the right fixing frame 62 are connected and fixed by the screw 63 and the nut 66; the diameter of the round tube hole 64 is larger than the round tube 2, and the diameter of the steel tube hole 65 is consistent with the steel tube 8; when the pre-pressure is applied, the steel tube hole 65 fits with the steel tube 8, and the fixing frame 6 can prevent the steel tube 8 from lateral instability when it is under pressure.

4. The pre-tension reaction frame 9 as described in claim 1 comprises a left reaction frame 91, a right reaction frame 92, a screw 93, a round hole 94, a nut 95, a hexagonal groove 96 and a screw hole 97; when assembling the pre-tension reaction frame 9, the left reaction frame 91 and the right reaction frame 92 are connected and fixed by the screw 93 and the nut 95; the size of the round hole 94 is larger than the hexagonal sleeve 33 of the front connecting rod 3 and the hexagonal sleeve 43 of the rear connecting rod 4, the size and shape of the hexagonal groove 96 are consistent with the front connecting rod 3 and the rear connecting rod 4, and the diameter of the screw hole 97 is larger than the screw 11.

5. The method for applying pre-stress to the bolt ball grid rods according to claim 1, wherein the pre-stressing force is applied, comprising the following steps: Step 1, connect the bolt 31 of the front connecting rod 3 with the bolt ball 1 through threads, and the threaded section 32 of the front connecting rod 3 is not connected to the round tube 2 but suspended in the empty chamber 23; connect the threaded section 42 of the rear connecting rod 4 with the rear threaded section 22 of the round tube 2 through threads, and connect the bolt 41 of the rear connecting rod 4 with the bolt ball 1 through threads; install a pre-stress reaction frame 5 on the outside of the hexagonal sleeve 33 on the front connecting rod 3 through the round hole 54, and install another pre-stress reaction frame 5 on the outside of the hexagonal sleeve 43 on the rear connecting rod 4 through the round hole 54, and make the circular groove 56 fit the bolt ball 1; install the jack 7 and the steel pipe 8 between the two pre-stress reaction frames 5, and install the fixing frame 6 on the round tube 2 and the steel pipe 8; Step 2: Use the jack 7 to load, the piston rod 71 of the jack 7 extends, and the pre-pressure is applied to the bolt ball grid. The hydraulic pressure gauge of the jack 7 is used to control the pre-pressure; the pre-pressure is transmitted through two paths: jack 7-pre-pressure reaction frame 5-circular groove 56-bolt ball 1 and jack 7-steel pipe 8-pre-pressure reaction frame 5-circular groove 56-bolt ball 1; Step 3, fix the front connecting rod 3 and the rear connecting rod 4, rotate the round tube 2 so that the front threaded section 21 of the round tube 2 and the rear threaded section 32 of the front connecting rod 3 are connected by threads; retract the piston rod 71 of the jack 7, and the pre-pressure transmission path becomes bolt ball 1-front connecting rod 3-round tube 2-rear connecting rod 4-bolt ball 1; Step 4: Remove the nut 66 and the screw 63, and remove the fixing frame 6; remove the jack 7 and the steel pipe 8; remove the nut 55 and the screw 53, and remove the pre-pressure reaction frame 5.

6. The method for applying a pre-tension force to a bolt ball grid rod according to claim 1, wherein the pre-tension force is applied, comprising the following steps: Step 1, connect the bolt 31 of the front connecting rod 3 with the bolt ball 1 through threads, and the threaded section 32 of the front connecting rod 3 is not connected to the round tube 2 but suspended in the empty chamber 23; connect the threaded section 42 of the rear connecting rod 4 with the rear threaded section 22 of the round tube 2 through threads, and connect the bolt 41 of the rear connecting rod 4 with the bolt ball 1 through threads; install one pre-tensioning reaction frame 9 on the inner side of the hexagonal sleeve 33 on the front connecting rod 3 through the round hole 94, and install another pre-tensioning reaction frame 9 on the inner side of the hexagonal sleeve 43 on the rear connecting rod 4 through the round hole 94, and make the hexagonal groove 96 fit the front connecting rod 3 and the rear connecting rod 4; install the through-hole jack 10, screw 11 and nut 12 on the two pre-tensioning reaction frames 9; Step 2: Loading is performed using a through-hole jack 10. The piston rod 101 of the through-hole jack 10 extends to apply pre-tension to the bolt ball grid. The pre-tension is controlled by a hydraulic pressure gauge of the through-hole jack 10. The pre-tension is transmitted through two paths: through-hole jack 10-pre-tension reaction frame 9-hexagonal slot 96-front connecting rod 3-bolt ball 1 and through-hole jack 10-nut 12-screw 11-nut 12-pre-tension reaction frame 9-hexagonal slot 96-rear connecting rod 4-bolt ball 1. Step 3, fix the front connecting rod 3 and the rear connecting rod 4, rotate the round tube 2 so that the front threaded section 21 of the round tube 2 and the threaded section 32 of the front connecting rod 3 are connected by threads; retract the piston rod 101 of the through-hole jack 10, and the pre-tension transmission path becomes bolt ball 1-front connecting rod 3-round tube 2-rear connecting rod 4-bolt ball 1; Step 4: Remove the through-hole jack 10, the screw 11 and the nut 12; remove the nut 95 and the screw 93, and remove the pre-tension reaction frame 9.

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