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- Subject: Fwd: Re: Local Bending in Tubes/Pipes
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 30 Jul 1997 14:15:40 GMT
Mike wrote: "How would you check the local bending in a tube (or pipe) column when the >connection is a shear plate. There is the eccentricity of the bolt holes >to the column which puts a small local moment into the column....." Butting a vertical shear plate beam connector against the face of a pipe or rectangular tube column will certainly not be very rigid. Have you considered slotting the tube, passing the plate through, and welding it to both the near and far walls? That's a strong, stiff, and cheap beam connection. It's also common to use a tee rather than a plate as a beam connector, when the column is a rectangular tube. The tee flanges are usually thicker than the tube wall - especially if it's cut from an "I" section. The welds between the tee flanges and the tube are then close to the perpendicular walls and thus more rigid. By choosing the right tee, you can control the degree of rigidity or flexibility, so there can be a bit of compliance in the connection. There are some good books and some industry pamphlets on tube connections. It's worth exploring, especially when you get into tube to tube connections, where the stress and strain behaviour, and strength, are not obvious at first glance. Jim Warne, Vancouver --- Internet Message Header Follows --- Received: from server1.seaoc.org (bqe.com [188.8.131.52]) by host1.texramp.net (8.8.5/8.8.5) with SMTP id LAA00924 for <rlewis(--nospam--at)techteam.org>; Fri, 7 Feb 1997 11:20:59 -0600 (CST) Received: from orb.direct.ca by server1.seaoc.org (NTList 3.02.10) id ya003248; Fri, 7 Feb 1997 09:16:45 -0800 Received: from van-as-01a07.direct.ca (van-as-01a07.direct.ca [184.108.40.206]) by orb.direct.ca (8.8.3/8.8.0) with SMTP id JAA05282 for <seaoc(--nospam--at)seaoc.org>; Fri, 7 Feb 1997 09:13:51 -0800 (PST) Date: Fri, 7 Feb 1997 09:13:51 -0800 (PST) Message-Id: <199702071713.JAA05282(--nospam--at)orb.direct.ca> X-Sender: seaoc-ad(--nospam--at)seaoc.org X-Mailer: Windows Eudora Light Version 1.5.2 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: seaoc(--nospam--at)seaoc.org From: Jim Warne <jwarne(--nospam--at)direct.ca> Subject: Re: Local Bending in Tubes/Pipes Reply-To: seaoc(--nospam--at)seaoc.org Error-To: seaoc-ad(--nospam--at)seaoc.org X-Loop: seaoc(--nospam--at)seaoc.org X-Info: [SEAOC] Owner: seaoc-ad(--nospam--at)seaoc.org X-POP3-Rcpt: seaoc-ad(--nospam--at)seaoc.org Precedence: list X-ListMember: rlewis(--nospam--at)techteam.org [seaoc(--nospam--at)seaoc.org] __________________________________________________ Richard Lewis, P.E. Missionary TECH Team rlewis(--nospam--at)techteam.org The service mission like-minded Christian organizations may turn to for technical assistance and know-how.
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