WO2018163143A2 - Modular mobile table for prestressing - Google Patents

Modular mobile table for prestressing Download PDF

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Publication number
WO2018163143A2
WO2018163143A2 PCT/IB2018/054110 IB2018054110W WO2018163143A2 WO 2018163143 A2 WO2018163143 A2 WO 2018163143A2 IB 2018054110 W IB2018054110 W IB 2018054110W WO 2018163143 A2 WO2018163143 A2 WO 2018163143A2
Authority
WO
WIPO (PCT)
Prior art keywords
prestressing
support
building structure
tension
tension cable
Prior art date
Application number
PCT/IB2018/054110
Other languages
French (fr)
Other versions
WO2018163143A3 (en
Inventor
José Manuel GALLARDO MÉNDEZ
Victoria Melisa SERRANO RODRÍGUEZ
Karen Elena CABALLERO MORRISON
Iveth del Rosario MORENO GONZÁLEZ
Original Assignee
Universidad Tecnológica De Panamá
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidad Tecnológica De Panamá filed Critical Universidad Tecnológica De Panamá
Publication of WO2018163143A2 publication Critical patent/WO2018163143A2/en
Publication of WO2018163143A3 publication Critical patent/WO2018163143A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/121—Construction of stressing jacks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/12—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by stretching with or without twisting

Definitions

  • the present invention can be included in the technical field of construction, specifically in the field of producing prestressed structures.
  • the object of the invention relates to a portable modular device for prestressing building structures by means of the use of manual hydraulic jacks.
  • the prestressing process consists of intentionally creating building structures with permanent stresses, with the goal of improving the performance thereof in different conditions.
  • the prestressed structures are created using high-resistance steel tendons embedded in the structural element, stressed before concreting.
  • the construction of these structures requires permanent facilities and plants for precasting and it entails high costs.
  • the invention relates to a portable modular device for prestressing building structures by means of the use of manual hydraulic jacks, which facilitates the production method of these structures and reduces the cost thereof.
  • one aspect of the present invention relates to a portable modular device for prestressing building structures which comprises:
  • the stressing head of the support for prestressing is movable along the building structure.
  • the tension cable is made of high-resistance steel.
  • the half circle rotation of the tension cable in the stressing head is 180 degrees.
  • the device further comprises a guide piece on the stressing head of the tension cable for the half circle rotation thereof, when the separation between the tension cables is less than two times the minimum turn radius, preventing the rupture of the tension cable.
  • FIG 1 shows a side view of the prestressing device.
  • FIG 2 shows a top view of the prestressing device.
  • FIG 3 - Shows a front view of the prestressing device
  • FIG 4 shows a top view of the guide piece for rotating the tension cable of the prestressing device.
  • FIG 5 shows a side view of the guide piece for rotating the tension cable of the prestressing device.
  • FIG 1 shows a side view of the modular support for prestressing (1 ) which has the building structure (2), the tension cable (9) that runs inside the building structure, the manual hydraulic jacks (4a and 4b) and the stressing head (7a and 7b) of the building structure on each end of the support for prestressing, the support plates (3a and 3b), the transverse fastening elements (8a and 8b) and the mechanisms for transmitting hydraulic tension (5a and 5b) with the alignment clamps (6a and 6b).
  • FIG 2 shows a top view of the inside of the support for prestressing with the tension cables (9) and the stressing heads (7a and 7b), wherein the half circle rotation (10a and 10b) of the tension cable on the ends of the support is shown.
  • FIG 3 shows a front view of the hollow cylinders (1 1 ) of the inside of the building structure through which the tension cable passes in the stressing head (7).
  • FIG 4 shows a top view of the guide piece (12) with a slot (13) for the rotation of the tension cables (9) when the separation thereof is less than two times the minimum turn radius, thereby preventing the rupture of the tension cable.
  • FIG 5 shows a side view of the guide piece (12) with a slot (13) for the rotation of the tension cables (9) when the separation thereof is less than two times the minimum turn radius, thereby preventing the rupture of the tension cable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The invention relates to a portable modular device for prestressing building structures by means of the use of manual hydraulic jacks, which facilitates the production method of these structures and reduces the costs thereof. The device comprises a modular support for prestressing which has the building structure, at least one tension cable that runs inside the building structure and is tightened by means of a manual hydraulic jack, at least one stressing head for each end of the support for prestressing, support plates and transverse fastening elements of the building structure along with mechanisms for transmitting hydraulic tension with the alignment clamps thereof.

Description

MODULAR MOBILE TABLE FOR PRESTRESSING
OBJECT OF THE INVENTION
The present invention can be included in the technical field of construction, specifically in the field of producing prestressed structures.
More specifically, the object of the invention relates to a portable modular device for prestressing building structures by means of the use of manual hydraulic jacks. BACKGROUND OF THE INVENTION
The prestressing process consists of intentionally creating building structures with permanent stresses, with the goal of improving the performance thereof in different conditions. The prestressed structures are created using high-resistance steel tendons embedded in the structural element, stressed before concreting. The construction of these structures requires permanent facilities and plants for precasting and it entails high costs.
Document US3577613 discloses a portable prestressing system that uses specialized stressing jacks and anchoring members on all of the ends of the cables, which thus makes the system require the availability of specialists, as well as the availability of spare anchoring members in large quantities and proportional to the amount of cables required by the structure.
Therefore, in light of the aforementioned points, it is necessary to find alternatives that are focused on portable facilities or devices for prestressing building structures that are easy to use and with reduced production costs for the same. DESCRIPTION OF THE INVENTION
The invention relates to a portable modular device for prestressing building structures by means of the use of manual hydraulic jacks, which facilitates the production method of these structures and reduces the cost thereof.
Therefore, one aspect of the present invention relates to a portable modular device for prestressing building structures which comprises:
- at least one modular support for prestressing which has the building structure,
- at least one tension cable that runs inside the building structure,
- at least one hollow cylinder inside the building structure through which the tension cable passes,
- at least one manual and adjustable hydraulic jack on each end of the support for prestressing that allows for the stressing of the tension cables,
- at least one stressing head of the tension cable on each end of the support for prestressing,
- at least one support plate of the building structure on the support for prestressing,
- at least one transverse fastening element of the building structure on the support for prestressing,
- at least one mechanism for transmitting hydraulic stress from the manual hydraulic jack to the stressing head in the support for prestressing,
- at least one alignment clamp of the manual hydraulic jack and the stressing head in the mechanism for transmitting hydraulic tension, and
- at least one protective screen on the support for prestressing,
where by means of the manual hydraulic jack the tension cable is stressed, rotating the tension cable around a half circle on the stressing head, allowing for the building structure to be prestressed.
In one preferred embodiment, the stressing head of the support for prestressing is movable along the building structure.
In another preferred embodiment, the tension cable is made of high-resistance steel.
In another preferred embodiment, the half circle rotation of the tension cable in the stressing head is 180 degrees.
In another preferred embodiment, the device further comprises a guide piece on the stressing head of the tension cable for the half circle rotation thereof, when the separation between the tension cables is less than two times the minimum turn radius, preventing the rupture of the tension cable.
DESCRIPTION OF THE DRAWINGS FIG 1 shows a side view of the prestressing device.
FIG 2 shows a top view of the prestressing device.
FIG 3 - Shows a front view of the prestressing device
FIG 4 shows a top view of the guide piece for rotating the tension cable of the prestressing device.
FIG 5 shows a side view of the guide piece for rotating the tension cable of the prestressing device. PREFERRED EMBODIMENT OF THE INVENTION
A preferred embodiment of the invention is described below based on figures shown.
FIG 1 shows a side view of the modular support for prestressing (1 ) which has the building structure (2), the tension cable (9) that runs inside the building structure, the manual hydraulic jacks (4a and 4b) and the stressing head (7a and 7b) of the building structure on each end of the support for prestressing, the support plates (3a and 3b), the transverse fastening elements (8a and 8b) and the mechanisms for transmitting hydraulic tension (5a and 5b) with the alignment clamps (6a and 6b).
FIG 2 shows a top view of the inside of the support for prestressing with the tension cables (9) and the stressing heads (7a and 7b), wherein the half circle rotation (10a and 10b) of the tension cable on the ends of the support is shown.
FIG 3 shows a front view of the hollow cylinders (1 1 ) of the inside of the building structure through which the tension cable passes in the stressing head (7).
FIG 4 shows a top view of the guide piece (12) with a slot (13) for the rotation of the tension cables (9) when the separation thereof is less than two times the minimum turn radius, thereby preventing the rupture of the tension cable.
FIG 5 shows a side view of the guide piece (12) with a slot (13) for the rotation of the tension cables (9) when the separation thereof is less than two times the minimum turn radius, thereby preventing the rupture of the tension cable.

Claims

1 . A portable modular device for prestressing building structures which comprises:
- at least one modular support for prestressing which has the building structure,
- at least one tension cable that runs inside the building structure,
- at least one hollow cylinder inside the building structure through which the tension cable passes,
- at least one manual and adjustable hydraulic jack on each end of the support for prestressing that allows for the stressing of the tension cables,
- at least one stressing head of the cable on each end of the support for prestressing,
- at least one support plate for the building structure on the support for prestressing,
- at least one transverse fastening element of the building structure on the support for prestressing,
- at least one mechanism for transmitting hydraulic tension from the manual hydraulic jack to the stressing head in the support for prestressing,
- at least one alignment clamp of the manual hydraulic jack and the stressing head in the mechanism for transmitting hydraulic tension, and
- at least one protective screen on the support for prestressing,
where by means of the manual hydraulic jack the tension cable is stressed, rotating the tension cable around a half circle on the stressing head, allowing for the building structure to be prestressed.
2. The device according to claim 1 , wherein the stressing head of the support for prestressing is movable along the building structure.
3. The device according to claim 1 , wherein the tension cable is made of high- resistance steel.
4. The device according to claim 1 , wherein the semicircular rotation of the tension cable is 180 degrees.
5. The device according to claim 4, which further comprises a guide piece on the stressing head of the tension cable for the half circle rotation thereof, when the separation between the tension cables is less than two times the minimum turn radius, preventing the rupture of the tension cable.
PCT/IB2018/054110 2018-05-22 2018-06-07 Modular mobile table for prestressing WO2018163143A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PA92206 2018-05-22
PA9220601 2018-05-22

Publications (2)

Publication Number Publication Date
WO2018163143A2 true WO2018163143A2 (en) 2018-09-13
WO2018163143A3 WO2018163143A3 (en) 2018-11-29

Family

ID=63448500

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/054110 WO2018163143A2 (en) 2018-05-22 2018-06-07 Modular mobile table for prestressing

Country Status (1)

Country Link
WO (1) WO2018163143A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235938A (en) * 2021-04-29 2021-08-10 张丙岩 Reinforcing bar strapper for building site

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230712A (en) * 1963-03-21 1966-01-25 Emil J Paidar Company Manual hydraulic jack
US3456918A (en) * 1967-07-13 1969-07-22 Prescon Corp The Apparatus for stressing tension members
US5233789A (en) * 1992-11-16 1993-08-10 General Motors Corporation Adjustable cable guide assembly for powered sliding vehicle door closer
JP4191331B2 (en) * 1999-01-08 2008-12-03 三菱電機株式会社 Elevator equipment
US6287228B1 (en) * 1999-11-12 2001-09-11 Shimano, Inc. Rear derailleur with cable guide roller
DE102008032881B3 (en) * 2008-07-14 2009-11-12 Dywidag-Systems International Gmbh Apparatus and method for controlling a tensioning press when tensioning a tendon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235938A (en) * 2021-04-29 2021-08-10 张丙岩 Reinforcing bar strapper for building site

Also Published As

Publication number Publication date
WO2018163143A3 (en) 2018-11-29

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