| 摘要 |
A construction beam (100, 100a-c, 200, 300) includes a pair of lateral members (102, 102a-c, 202, 302, 104, 104a-c, 204, 304) and a resilient web (106, 106', 106'', 106''', 206, 306a-b) extending therebetween, so as to present a cross-sectional profile corresponding to commonly used construction beam members (for example, 2" x 4" or 2" x 6"). The resilience of the web (106, 106', 106'', 106''', 206, 306a-b) helps to attenuate sound transmission through the beam (100, 100a-c, 200, 300) from one lateral member (102, 102a-c, 202, 302, 104, 104a-c, 204, 304) to the other. In particular, in a wall frame, the lateral members (102, 102a-c, 202, 302, 104, 104a-c, 204, 304) are mounted at opposite ends thereof to end plates consisting of other construction beams (100, 100a-c, 200, 300) according to the present invention (that is, a pair of lateral members (102, 102a-c, 202, 302, 104, 104a-c, 204, 304) with a resilient web (106, 106', 106'', 106''', 206, 306a-b) extending therebetween). When the wall frame is used in a building structure, the lateral members (102, 102a-c, 202, 302, 104, 104a-c, 204, 304) of the end plates on the same side are attached to the surrounding structure, leaving the other side of the frame resiliently free floating. A wall is mounted on the free floating side of the wall frame so as to provide a resiliently free floating wall that acts as a sound attenuating "diaphragmatic" absorber.
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