In:
Bautechnik, Wiley, Vol. 98, No. S1 ( 2021-04), p. 40-50
Abstract:
Densified veneer wood connectors – tests with first prototypes for loads up to 500 kN System connectors for timber‐to‐timber secondary beam to main beam connections are two‐part connectors made of metal, the advantages of which are, among other things, distinguished by the high degree of prefabrication. For the development of new beam‐to‐beam connectors, various surface treatments were examined and the respective coefficients of friction were determined. Based on these results, connections with inclined screws were examined in preliminary tests. The arrangement as well as the number and length of screws were systematically varied. Possible block shear failure of entire screw groups, as well as the effective number of fasteners were checked. The test program included tests in the main load directions for various prototypes. First, connectors for a load carrying capacity of 180 kN were tested in the insertion direction, then heavy‐duty connectors for loads up to 500 kN. New insights for the dimensioning of such connections resulted from the experiments. The originally proposed calculation model was successively adapted and the Moment‐Normal force‐interaction in the screws was taken into account. With an average ratio of the ultimate test load to the expected capacity of 1.05, the adapted model predicts the load carrying capacity very well. In a direct comparison of the characteristic load carrying capacities of the prototypes with commercially available connectors, the prototypes perform very well and in some cases outperform conventional connectors made of aluminium.
Type of Medium:
Online Resource
ISSN:
0932-8351
,
1437-0999
DOI:
10.1002/bate.202000103
Language:
German
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2151238-3
detail.hit.zdb_id:
240073-X
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