Stress application system for large-tonnage static load tests

A static load test, large tonnage technology, applied in the test of basic structure, construction, basic structure engineering, etc., can solve the problems of low bearing capacity, poor stability, unsafe operation, etc. Shear stress capability, effect of increasing maximum normal stress

Active Publication Date: 2013-04-24
CHINA MCC5 GROUP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the technical defects of low bearing capacity, poor stability, unsafe operation and high test cost in the traditional reaction force device system, the present invention provides a large tonnage static load test force system

Method used

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  • Stress application system for large-tonnage static load tests
  • Stress application system for large-tonnage static load tests
  • Stress application system for large-tonnage static load tests

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Embodiment Construction

[0029] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] A large-tonnage static load test force system, comprising a box girder 4 and a counterweight box 1, characterized in that a reinforcing plate 15 is fixed in the middle of the lower plane of the box girder 4.

[0031] In the static load test, as attached figure 1 As shown, the supporting column 3 supporting the shaped steel beam is installed around the tested pile, the counterweight box 1 is placed on the shaped steel beam 2, and the box girder 4 is placed under the shaped steel beam, relying on 5 pairs of jacks placed on the pile head of the test pile Add force to the middle of the box girder, gradually jacking up the box girder, shaped steel girder and counterweight box, thereby applying force to the pile head of the tested pile 6.

[0032] The function of the combined box girder is to transfer the heap load of the counter...

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Abstract

Disclosed is a stress application system for large-tonnage static load tests. The stress application system comprises a box girder and counterweight boxes and is characterized in that a reinforcing plate is fixed on the middle portion of a lower platform of the box girder. Preferentially, transverse stiffening ribs at intervals of D and vertical to the length extending direction of the box girder are further arranged in the box girder. A stiffening rib reinforcing area is arranged on the inside on the middle portion of the box girder, the installation density of the transverse stiffening ribs in the stiffening rib reinforcing area is larger than that in other areas in the box girder, and the length of the stiffening rib reinforcing area is larger than the length of the reinforcing plate. By means of the stress application system for large-tonnage static load tests, the reinforcing plate is added on the support face between the box girder and a jack, the maximum durable normal stress in the middle of the box girder is increased, the stress application system is rapid and efficient, and the counter-force can reach 6000kN and 12000kN. The transverse stiffening ribs are added in the box girder, so that the capacity to resist the pressure stress in the middle and the shearing strengths at two ends is enhanced, and the loading capacity of the counterweight box is enhanced due to the improvement of the counterweight box, and the counterweight box is convenient to hoist.

Description

technical field [0001] The invention belongs to the field of construction engineering and relates to a large-tonnage static load test boosting system. Background technique [0002] At present, in various static load tests, the reaction system mainly has the following forms: anchor pile beam reaction device, artificial sand bag stacking platform reaction device, combined counterweight box stacking and combined box beam platform Reaction device. [0003] 1. Heap load reaction beam device system [0004] like Figure 4 As shown, the reaction force device system is mainly composed of piled loads and a platform, and its structural characteristics and working principles are as follows: The piled load reaction beam device is set on the pile head of the test pile 6 with the pile head as the center using a steel beam 2. On a load-bearing platform, heavy objects are piled up, and the platform is gradually jacked up by the jack 5 placed on the pile head, so that power is applied to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
Inventor 陈艳杨汉林王欢
Owner CHINA MCC5 GROUP CORP
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